Evolution
Encyclopedia Vol. 3
Chapter 26
PALEOMAGNETlSM --Supplementary Material
1 -
CONTINENTAL DRIFT
AND PLATE TECTONICS
Tectonics theory requires that continents travel around from place to place,
changing direction from time to time as they go. This is called
"continental drift." It, in turn, is based on another theory that
there are massive moving plates on the surface of the earth and, where they
meet, one gently "plunges beneath" another. Concerned scientists have
something to say about these strange theories:
*Maxwell lists five fatal flaws to the plate tectonics theory:
"In 1973 an interesting book was published, edited by the Indiana
State University geologist, Bruce Moulton. It contained a paper entitled ‘Continental
Drift and a Dynamic Earth' by John C. Maxwell, who urged caution by all
regarding the theory of drift. Maxwell pointed out some virtually fatal
objections to the theory, including:
"1. Underthrusting of the required magnitude should initiate
compressive buckling of the crust, but, instead of the associated oceanic
downwarping, reflects passive sinking and stretching.
" 2. The figure of the Earth departs sufficiently from the ideal
ellipsoid of [convective current] revolution to [instead] imply considerable
strength and therefore a high viscosity incompatible with a converting
mantle.
" 3. The linkage of crust to mantle, extending to depths of several
hundred kilometers, is difficult to reconcile with [theoretical] active upper
mantle convection.
"Maxwell writes, 'to the above fundamental objections may be
added several others' (italic's Maxwells). [4] The worst of these is the
'impossibility of forcing thousands of cubic kilometers of light crustal rock
downwards into heavier rock.' [5] He goes on to say that pileups of enormous
amounts of oceanic sediments and basaltic rocks against the margins of
continents with bordering young mountain systems should be found but they are
not found, certainly not in the volumes required. This fact has puzzled a
number of geologists and I predict their puzzlement will continue while they
hold to the theory." —A. W. Mehlert, Book Review, Creation Research
Society Quarterly, June 1987, p. 31. (Mehlert's source: *John C. Maxwell, in
*B. Moulton, Readings in Earth Science [1973], pp. 154-162.)
Maxwell's list of five objections, as quoted by Mehlert, above, is one of the
best succinct analyses you will find. Here is a brief rewording of those five
points so that you can grasp them all more clearly:
(1) The two plates should collide and produce massive broken-ground
mountains, instead of sliding underneath one another.
(2) Viewed from the side, boiling fluid in a pan flows
up, around and
down in a flattened circular manner. But the earth's surface is a very thick and
solid substance, incompatible with the Newtonian convection currents in a pan of
boiling water.
(3) How can the earth's crust, which is hundreds of miles thick, behave like
hot, flowing water?
(4) According to the theory, where the "plates meet," the upper,
lighter-weight crust on each plate is supposed to "plunge downward"
through over a hundred miles of heavier, solid rock!
(5) Hundreds of vertical miles of solid rock on each side is said to meet
each other, then both are theorized as sliding quite gently down into a 90°
angle about 500 miles (804.6 km) without any crunching, bunching action.
There is no way to push large masses of solid rock down into and through large
masses of solid rock. A new physical law will have to be invented to explain it:
"Two solid objects can occupy the space already totally filled by one.
This is done simply by inserting the second into the first" Modern global
plate tectonics is based on this new imaginary law.
"Subduction" is the name given to the supposed plunging
of one plate beneath another. Peterson speaks strongly in opposition to it:
"[According to the theory of plate tectonics], The crust of the earth
is not divided up in even squares, but in plates of irregular size and shape.
The Theory of Plate Tectonics calls for certain edges of certain ocean basin
plates to be continually rolled under, with the leading edge constantly being
melted in the mantle, the supposed process being called subduction.
This appears to me to be an impossibility. The plates are not made of
rubber, to so be bent, but of solid, rigid rock up to 40 miles [64.372 km]
thick, that certainly will crack and break off rather than bend. Therein lies
another objection. There is no natural force from above which could push on
the edge of the plates and bend it. Neither is there a force below that could
pull or suck the edge down. Then how could it happen? Menard believes he has a
solution and writes authoritatively:
" 'Trench is created where the leading edge of a plate that emerges
from a fast spreading center collides with another plate. Because the combined
speed of the two is more than six centimeters per year, neither can absorb the
impact by buckling. Instead one crustal plate plunges under the other to be
destroyed in the asthenosphere.' [*H.W. Menard, "The Deep-ocean
Floor," in Readings from Scientific American (1969), p. 163.]
"The logic of all this escapes me. A speed of six centimeters a year
does not seem to be enough to cause any damage in a collision. The opposing
plates should just stop, and if the driving force continued, the plates should
just be in a shoving match. Also, the words 'collision' and 'plunge', can
hardly be associated with a speed of six centimeters per year.
"Another objection is that there never could be a collision. That
would implies an aginal separation of two objects which then come together
with face. Two plates of the earth's crust, however, never can have an empty
gap between them. (If they did so on land, vast quantities of lava would
continually pour out of them.] Calder explains:
"'No gap can exist between the plates—there are no forty-mile deep
chasms in the earth's surface.' [*Nigel Calder, The Restless Earth
(1972), p. 48.]
"No gap, no collision; no collision, no plunge; no plunge, no
subduction; no subduction, no continental drift. That is the way I see
it." —Everett H. Peterson, "How the Flood Altered the
Earth," in Creation Research Society Quarterly, September 1981, p. 124.
Unfred takes them, plate by plate, and points out a number of difficulties in
the theory:
"Plate tectonic models have attained widespread popularity and,
therefore, are taught with varying degrees of certainty as scientific fact.
However, there are major problems between what is predicted by theory and the
geologic evidence. A sampling of these problem areas is highlighted below.
"A. Africa. The African plate includes the continent and a surrounding
'ocean floor spreading' zone. Assuming that Africa has separated from the
other continental land masses, plate tectonic theory requires an area of crust
larger than the African continent to have been subducted. But between the
Atlantic and Indian Oceans spreading ridges, there is no trench system
available to swallow 'older' crust. In fact Africa is surrounded by a
spreading ridge-rift system.
"Plate tectonic theorists have suggested that the African plate has
remained stationary while new ocean floor growth has been accommodated by the
Pacific trench system and towards Antarctica. As Carey observes:
"'The Peru-Chile Trench then has to swallow more than 1600 km [2574.88
mi] of Africa's share, plus more than 1400 km [2252 mil of South America's
share, plus 3700 km [5954.4 mi] from the South Pacific, making a total of 7000
km [11,265 mi] of lithosphere underthrust below the Andes." [*S. Carey,
"The Necessity for Earth Expansion," in *S. Carey (ed.), Emending
Earth Symposium (1983), pp. 375-393.]
"Towards Antarctica, the Kermadec Trench between Australia and Africa
would have had to subduct 1300 km [2092 mi] of oceanic crust. Is there any
evidence that this massive magnitude of subduction has occurred? The answer is
'No.'
"B. Peru-Chile Trench. In order for the Earth's radius to remain
constant, the trenches around the globe must swallow oceanic crust at the same
rate that the ridge-rift systems are producing new ocean floor. However, the
sediments deposited on the ocean floor would not all be subducted. Sediments
are lighter than the basaltic crust and would `float' on the denser mantle
rocks. Scrapings of the lighter sediments should pile up in the trenches and
at continental margins. Massive volumes of ocean floor sediments should be
found within the trenches and at continental margins. Geological surveys of
the Peru-Chile Trench have revealed a different picture. Some sections contain
undisturbed tertiary sediments. Geologic evidence for massive oceanic
crust subduction does not exist in the Peru-Chile Trench.
"C. Antarctica. Plate tectonic theory causes even more severe problems
for Antarctica than Africa. The Antarctic plate is bounded on all sides by
[supposed) 'spreading' zones. Again, according to the theory, an amount of
oceanic dust no less than the size of the continent would have been subducted.
No sign of such a massive subduction exists. The only small trench (South
Sandwich) in the region is at right angles to the hypothetical spreading zone.
"Theoretical diagrams of ocean floor spreading and subduction may
appear convincing. On the otter hand, when plate tectonic principles are
applied on a global scale, the geologic evidence is lacking." —David
W. Unhed, "Flood and PostFlood Geodynamics," in Creation Research
Society Quarterly, March 1986, pp. 173-174.
Burdick adds still more hurdles to the theory. (His first point disproves an
"evidence" suggested by those creationists anxious to be in agreement
with this latest scientific theory.)
"1. The notion is essentially an evolutionary one, involving long ages.
h could not apply to the reference in Genesis 10:25, which says briefly that in
Peleg's days the earth was divided. If India, for instance, had traveled all the
way from Antarctica to its present location [and done it all] in 'Peleg's days',
the result would have been a catastrophe . .
" 2. If Africa had really traveled westward, as had been suggested on
the grounds of the nature of the eastern shore, is it supposed to have traveled
eastward at the same time, to leave a gap and form the Atlantic Ocean?
" 3. It is claimed that continents fit together like fingers in a glove
to form Pangea [an imaginary earlier combined continent]. However, it should be
noted that in order to get this perfect fit, some small pieces of the continents
have to be left out.
"4. The Appalachian and Rocky Mountains are not parallel, as they should
be according to the Pangea notion.
"5. Whence came all the power to move the continents? From radioactive
disintegration? But there should have been more radioactive material, and hence
more disintegration, in earlier times, back to Precambrian. Why, then, was there
no motion until (as is stated) Cretaceous times?
"6. If the present Atlantic Ocean did not exist until Cretaceous and
later geological times, why are Cambrian fossils found in the north Atlantic?
"7. The Stromabolite fossils, to mention just one kind, indicate stable
continents in the past,. as Meyerhoff has shown.
"8. The evidence shows that in the Permian age the North Pole was in
essentially the same location as it now is.
"9. The only driving mechanism proposed for continental drift seems to
be 'convection currents' in the mantle and crust of the earth. But Jeffreys,
Knopoff, and Tozer, citing the Lomnitz Law, question whether such currents are
possible.
"10. The convection notion would require that the continents be stacked
at the equator or at the poles.
"11. There is at present no evidence for the subjection crustal
movements. Yet they would be an essential part of the crustal shortening, and so
would seem necessarily to go along with the drift." —Clifford L
Burdick, "A Critical Look at Plate Tectonics and Continental Drift, "
in Creation Research Society Quarterly, September 1980, pp. 113-114.
The necessary gaps simply are not there, nor is the lava that should have
exuded upward through them.
"For the two plates to move as indicated, they will have to cam
themselves apart leaving a gap between them, which would then fill up with
lava. In the supposed millions of years of movement, similar situations must
have arisen many times. The fault line, therefore should be a wide band of
hardened lava—but it is not." —Everett H. Peterson, "How the
Flood Altered the Earth," in Creation Research Society Quarterly,
September 1981, p. 125.
"Convection currents" are said to be the driving force pushing up
plates and them taking them down. Unfred describes the theory and the unproven
basis it rests upon.
"Plate tectonics proposes that horizontal plate movements are the
cause of all major geotactonic effects. Theoretically, when an oceanic plate
collides with a continental plate, the heavier oceanic crust descends beneath
the continental plate. To move these plates along, convection currents within
the mantle have been assumed.
"A pan of heated water shows thermal convection. The hotter, less
dense water rises from the bottom of the pan and at the surface it loses heat
to the atmosphere. The cooler, denser surface water descends inward the bottom
of the pan. When applied to the Earth's mantle, the idea is [that,] 'given
enough time,' the Earth will behave as an ideal Newtonian [ellipsoid—
(flattened circular—) moving] fluid. If so, mantle rock should show a
convection similar to the thermal convection described above. However,
experiments with rock deformation under strain indicate the Earth's mantle may
have properties which make it act differently from a normal Newtonian fluid.
"The obstacle to knowing is that geophysicists cannot adequately test
their hypotheses about the Earth's interior. Fluid properties of the mantle,
beyond those required for isostasy phenomena of the crust, are unknown. In
fact, geophysicists still are unable to determine mantle composition
precisely." —David W. Untied, "Flood and Past-Flood
Geodynamics, " in Creation Research Society Quarterly, March 1988, p.174.
*Meyerhoff summarizes some of the difficulties facing anyone who would accept
the tectonics theory:
"All proposed models for 'New Global Tectonics' are seriously in
error. Paleoclimatic data distributions on continents and shelves of ancient
evaporites, carbonate rocks, coals, tillites, can be explained only if present
positions of rotational axis, continents and ocean bins have been constant for
at least 1,000 million years.
"Also distribution of fossil invertebrates and tetrapod faunas and
floras likewise indicate constancy of position of the rotational axis,
continents and ocean bins for at least 570 million years, or since Proterozoic
time. Space requirements for the continents do not permit east-west movements
since Archean time of more than 100-200 Km [160.9-321.8 mi] in the northern
hemisphere. The north-south movements of continents are limited to a few
hundred kilometers on the basis of paleo-climatic and paleontological data.
"Ocean bin studies show island arc trench fills where subduction
supposedly takes place [are] undeformed. Probably there is no such thing as
subduction. Sediment fills in fracture rifts crossing mid-ocean ridges are
also undeformed. Joides drilling results [oceanic core samples] have been
hailed as a remarkable confirmation of plate tectonics predictions. [But] The
first dating of the 'basement' basalts of Joides coreholes indicates that the
'basement' beneath Mesozoic rocks is late Tertiary or younger . .
..No Physical Theory Known can Explain Plate Tectonics."
—*A.A.
and *Howard Meyerhoff, "Continental Drift IV," in Journal of Geology
80(1):34-60 (1972). (Italics ours: see all five A.A. Meyerhoff articles (with
or without co-authors): in Journal of Geology, 78:1, 78:4, 79:3, 80:1, and
80:8.)
Frankly, the whole theory is all just a lot of clever speculation:
"The results of our respective investigations and deliberations
represent no more than clever speculations or, at best, more or less
reasonable working hypotheses. We have not really advanced our theoretical
thinking and knowledge much beyond that of our teachers twenty or even fifty
years ago. We may postulate, or even believe it fervently, that convection is
the ultimate and ubiquitous motor in plate tectonics. Yet we cannot prove that
friction between mantle and crust—how else can thermal convection be
converted into direction and motion?—is sufficient to drive crustal plates,
large and small." —*R. Brunnschweiler, "Evolution of
Geotectonic Concepts in the Past Century," in S. Carey (ed.), Expanding
Earth Symposium (1983), pp. 9-15.
The whole theory was just as ridiculous when it was first suggested.
"During the period of nearly universal rejection, direct evidence for
continental drift—that is, the data gathered from rocks exposed on our
continents—was every bit as good as it is today. It was dismissed because no
one had devised a physical mechanism [conventional currents] that would permit
continents to plow through an apparently solid oceanic floor. In the absence
of a plausible mechanism, the idea of continental drift was rejected as
absurd. The data that seemed to support it could always be explained away. .
In short, we now accept continental drift because it is the expectation of a
new orthodoxy." —*George Gaylord Simpson, The Meaning of Evolution
(1950), Note 233, p. 278.
According to one of the most recent books on the subject, the plates have to
be rigid or they could not push apart entire continents; (but yet must be soft,
so they can gently move downward at subduction zones, those places where the
plates meet).
"Because the plates are rigid and the convective patterns are orderly,
plate movement is not haphazard. For example, in places known as subduction
zones, the edge of one plate will slip under another and be dragged down into
the interior, pulling the rest of the plate with it in a steady
direction."— 'Roberta Conlan, Frontiers of Time (1991), p. 11.
"Rigid plates," yet one is "slipping" downward as it
nears a second. Let us imagine the scene for a moment: Take two dinner plates
and set them on the table. Each one is solid and horizontal. Now take one of the
plates (call it the "Pacific Plate") and begin sliding it beneath the
other (the "North American Plate"). Proportionally, in accordance with
the side-view drawings of plate tectonics, within an inch after beginning to
slide under the second dinner plate, the first plate will be moving downward
vertically. Obviously, that downward-moving plate ought to be tilted at least a
few degrees on its surface. Yet that would cause the other end of that
"rigid plate" to stick out of the Pacific Ocean thousands of feet into
the air! Yet nowhere does such diagonal movement of the plates occur. In
addition. such massive quantities of water would pour down the cracks, where one
plate is sliding beneath another, that water/magma explosions to put Krakatoa to
shame would continuously occur, devastating the planet. Only 22 percent of
geologists accepted plate tectonics in 1961, but by 1978, a full 87 percent had
gotten on the bandwagon and aligned with the new concept.
"Nitecki et. al. [1978] did a study involving a survey of 215
professional American geologists concerning their position towards the 'new
global tectonics.' 87 percent accepted it (about half considering it
'essentially established' and slightly less than half considering it 'fairly
well established'), and the remaining 12 percent rejected it as being
'inadequately proven'. 22 percent accepted in 1961." —John
Woodmorappe, "Anthology of Matters Significant to Creationism and
Diluviology: Report 2, " in Creation Research Society Quarterly,
March 1982, p. 219 preference: M.H. Nitecki, et. al., "Acceptance of
Plate Tectonic Theory by Geologists," in Geology 6:661-4 (1978)j.
The Nitecki opinion poll of geologists included this note:
"Those who have recently accepted the theory did so in an atmosphere
of general acceptance that does not seem to require that they weighed all the
evidence themselves."— *M.H. Nitecki, et al., "Acceptance of
Plate Tectonic Theory by Geologists," in Geology 6:661-4 (1978).
Unfortunately many "creationists" quickly accepted the new view
also, just as they have done with many other evolutionary concepts. Yet the
evidence for tectonics is simply not adequate.
"Most of the presumed evidences for the 'new global tectonics' are
squarely evolutionary-uniformitarian and so have no meaning in the
Creationist-Diluvialist paradigm. The argument from paleobiogeography, for
example, has meaning only if one accepts geologic periods and evolution:
acceptance of paleoclimatological arguments also requires acceptance of
geologic periods. The vital ocean-floor arguments (magnetic 'stripes',
ocean-bottom biostratigraphy, K-Ar results from submarine lavas) all require
acceptance of geologic periods, geomagnetic reversals, and radiometric
dating." —John Woodmorappe, "Anthology of Matters Significant
to Creationism and Diluviology: Report 2, " in Creation Research Society
Quarterly, March 1982, p. 219.
The fact that plate tectonics is little more than a sand castle theory
continually reveals itself in statements by its advocates. Consider the
following quotations:
"This theoretical insight, which goes by the term 'plate
tectonics'." —*Tom Alexander, "A Revolution Called Plate
Tectonics has Given us a Whole New Earth, " in Smithsonian, 5(10):3040
(1975).
"Much fossil evidence has been adduced for and against Continental
Drift, but the evidence is far from conclusive." —*Encyclopedia
Britannica (1971 ed.), p. 139.
"While few earth scientists agree on details, the broad outlines of
plate tectonics are established beyond dispute." —*J.R. Heirtzler,
"Project Famous, " in National Geographic, 147(5):588 (1975).
"This uplifting, from processes unknown, may be the primary agent
building the Mid-Atlantic Ridge." —*Op. cit., p. 603.
"Driven by implacable and still not-altogether-comprehensible forces,
these plates move off around the world." —*Tom Alexander, "A
Revolution Called Plate Tectonics has Given us a Whole New Earth," in
Smithsonian, 5(10):39 (1975).
"The motion of the ocean floor is driven by thermal convection in the
mantle. This motion provides the visible half of a convection loop . . The
details of the return flow are poorly understood and are therefore the subject
of continuing investigation." —*J.G. Sclater and *C. Tapscott,
"the History of the Atlantic," in Scientific American,
240(6):159-160 (1979).
"Although no one knows exactly how the plates of the earth's shell are
driven around, that does not deny their movements." —*Nigel Calder,
The Restless Earth (1972), p. 108.
"The plates and their interactions constitute a fine piece of
machinery that explains the outward appearance of the planet. It is
exasperating not to be sure how the machinery works." —*Nigel
Calder, The Restless Earth (1971), p. 106.
Burdick says it succinctly:
"The head structural geologist at a university, with whom I discussed
this [theory of plate tectonics and continental drift], was not ready to adopt
the theory. 'Be not the first by whom the new is tried, nor yet the last to
lay the old aside.' He cited Wesson, who enumerated some 75 objections to the
hypothesis, which as yet have not been answered." —Clifford L
Burdick, "A Critical Look at Plate Tectonics and Continental Drift,
" in Creation Research Society Quarterly, September 1980, p. 111.
(Referring to *Paul S. Wesson, "Objections to Continental Drift and Plate
Tectonics, " in Journal of Geology 80 (2):185-197 (1972).)
With excellent insight, Peterson compares plate tectonics with the general
theory of evolution:
"The two theories of Evolution and Plate Tectonics have two big points
in common. They both need millions and billions of years to accomplish their
objectives, and neither one can find a satisfactory mechanism to make their
systems work." —Everett H. Peterson, "How the Flood Altered the
Earth," in Creation Research Society Quarterly, September 1981, p. 125.
We might add a third quality of both theories: Both predict certain
activities—past, present, and future—which have never been observed to take
place. How can a theory be considered "scientific," much less correct,
when (1) it never describes a process which occurs and (2) there is no known
physical or biological means by which it could possibly occur.
*Corey summarizes several reasons why the idea of continents drifting around
is a foolish one.
". . [There are several] topological impossibilities and topographical
embarrassments created by the hypothesis of continental drift. Some of the
"embarrassments" are: (1) Regions that have obviously been expanding
when they should have been under compression; (2) The existence of too much
area on the present-sized globe for the required fauna) and paleogeographical
proximities; and (3) The absence of subduction zones where, according to the
theory, continent-sized sections of crust should have been swallowed up . .
"India has close fauna and paleogeographical ties with Australia,
Antarctica, Madagascar, Afghanistan, Kazakhstan, Tibet, East Africa, Iran, and
Arabia. The theory of continental drift has trouble in explaining all of these
connections. . The India paradox resolves into one of total surface area. It
is impossible to satisfy the valid proximity demands of one insistent neighbor
without leaving wide blank spaces between India and others whose proximity
demands are equally compelling . .
"Like all continents, Africa is surrounded by its
ocean-floor-spreading rift cone, shaped like an inflated caricature of Africa,
more than twice its own area. New oust, youngest at the rift ages from
quaternary through Tertiary and Cretaceous. Somewhere within Africa, plate
theory demands a sink which has swallowed an area of crust lithosphere greater
than the whole of Africa. Where is it? Such just does not exist!" —*S.
Warren Corey, "The Necessity for Earth Expansion," The Expanding
Earth: A Symposium, 1981, p. 377.
*Hallam comes to the subject with a background of expertise in this
area—and provides a number of reasons why continental drift would have been
impossible.
"According to Wegener, DuToit, and their followers, the vast
continental mass—Gondwanaland—consisting of the five continents or
continental areas combined into one, broke into separate continental masses as
a result of fragmentation and drifted apart, eventually reaching their present
positions. The separation of the individual continents began to take place,
presumably, in late Mesozoic time and culminated in Early Cretaceous time . .
Some of the geodetic and geophysical conditions or postulates which radically
affect the concept of continental drift are examined here briefly.
"The latest and most effective tool in measuring the shape and gravity
of the Earth has been provided by the artificial satellites. Combining ground
and satellite geodesy, which complement each other, new important information
has been obtained. Specifically, the Earth is not uniformly spherical. This
information leads to the description of the Earth geoid as a flattened
ellipsoid of revolution with four isolated protuberances and corresponding
depressions. These were located (Newton, 1964) in (1) the western
Mediterranean, (2) near New Guinea, (3) west of South America, and (4) between
South Africa and Antarctica. Their counterparts, the depressions, are found
(1) near the tip of India, (2) near Bermuda, (3) between Hawaii and Japan, and
(4) near the Ross Sea, off Antarctica.
"Thus, the irregular ellipticity of the Earth, as shown by gravity
measurements from satellites, indicates that it is not in a state of
hydrostatic equilibrium which was formerly assumed from ground-level
measurements. This evidence that the Earth departs from hydrostatic balance,
by a value that could exceed the strength of its materials, raises the
questions whether convection currents or other random motions within the
Earth, capable of exerting excessive outward stresses, are at all possible.
The alternative condition could be immobility a symmetrical motion around the
Earth's axis, none of which would satisfy the concept of convection currents
and its essential application to the hypothesis of continental drift . .
"Although there exists a broad similarity or 'fit' in the outlines of
the Atlantic coasts of South America and Africa— a similarity does not take
into account the effect of intense marine erosion of the coasts of these
continents since Early Cretaceous time when the breaking up of the continents
is supposed to have taken place. DuToit (192 considered the vast Triassic
basalt lava flows of southern Brazil as proof of the catastrophic separation
of the two continents and which was preceded by the great outpourings of lava.
The writer measured the lava traps of southern Brazil, and observed that they
are the largest recorded on the earths (Oppenheim, 1934), covering an area of
more than 1,200,000 sq km. However, the basalt lava beds are separated from
the Atlantic coast by an extensive range of Archean granite and metamorphic
rocks— Serra do Mar —which shows no evidence of regional rifting or
thrusting.
"The Atlantic Coast of South America—the key continent for the
concept of continental drift—in no perceptible measure reflects any evidence
of such drift. Its structural pattern is everywhere characterized; by normal
block faulting observable in rocks of all geologic ages from Precambrain to
Tertiary. The structure of the vast Parana basin in southern Brazil is
unequivocally characterized by block faulting (Oppenheim, 1934;Sanford and
Lange, 1960). The bathymetric and seismic observations of the Argentine basin,
recently surveyed by the research vessel Verna and the Argentine Navy (Ewing
et al., 1964), covering an area of 3,400,000 sq km between 30 degrees and 50
degrees south latitude and the Mid-Atlantic Ridge on the east, reveal the
presence of approximately 2, 500-3.400 m of horizontally layered sediments
with no indication of tectonic disturbance or other structural anomaly.
"The Falkland islands form an inseparable part of the South American
continent, and the long eastward-trending Falkland Ridge connects the
Argentine cast with the Mid-Atlantic Ridge, forming the southern limit of the
Argentine basin. Within this seismically surveyed area of thousands of square
kilometers, there are no indications of structural disruptions of the ocean
floor such as might have been expected . .
"Where the older shield rocks are faulted, the contacts with younger
sedimentary formations appear to be undisturbed by thrusting. The prevailing
structural pattern of the South American shields alms is block faulting with
no indication of thrusting or drag faulting. These surface and subsurface
observations of the structure of South America have this far shown no tangible
evidence of a westward drift of the continent. Some observable of physically
recordable indication of drift in rocks from Precambrian to Pleistocene ages
would have been expected, considering that a distance of more than 4,000 mil
separates South America from South Africa . .
"It can be concluded that the structure of East Antarctica forms part
of the framework of borderlands circling the Pacific basin with its young
orogenic belts and Tertiary to Recent volcanic activity. The geological and
geophysical information gathered to date indicates that the Antarctic
continent evolved and grew by accretions to the vary Precambrian shield of
successively younger geosynclines. Thus, the structural pattern of Antarctica
confirms what has long been know, that the circum-Pacific orogen has been part
of the Pacific basin since before Mesozoic time. There is no evidence of the
effect of a hypothetical continental drift anywhere in this part of the
Pacific basin . .
"Ocean-basin studies show that island-arc trench fills, where 'subduction'
supposedly takes place, are undeformed. . "Sediment fills in fracture
zones crossing midocean ridges also are undeformed—a remarkable fact if
sea-floor spreading is taking place. Many of these fractures continue onshore
into the continents, where the proved senses of movement are the opposite of
those predicted by 'transform-fault' solutions.
"JOIDES drilling results have been hailed as a 'remarkable
confirmation of plate tectonics' predictions. The first dating of the
'basement' basalts of JOIDES corehdes indicates that the 'basement' beneath
Mesoglobal tectonics' begins to crumble. .
"This paper collates some problem of the continental drift hypothesis
as formulated in its present aspect of plate tectonics. Many of the objections
are long standing but apparently unknown to many geophysicists, while some are
peculiar to the new global tectonics. The conclusions drawn, in order of
probability, are (1) the continents have almost certainly not moved with
respect to each other; (2) convection is not active throughout the whole
mantle; (3) even if convection is active in the upper mantle it cannot account
for drift; (4) pole positions derived from paleomagnetism, and results of this
method of investigation in its global form generally, are afflicted with an
unknown cause of error and are in any case too inexact for drift
reconstructions . .
"The postulated geometric schemes for mobile plates, moving
continents, midocean ridges, and convection cells in general are mutually
exclusive. Regardless of which scheme of drift, seafloor spreading, or plate
tectonics is adopted, absurd contradictions result. Areas where plate
tectonics should be clearly demonstrable—such as Iceland and India— are
the very areas where the non-existence of plate tectonics can be shown clearly
and unambiguously. l conclude therefore that the premises of drift are false;
that convection does not take place; and that, with so many contradictions and
without a mechanism, drift sea-floor spreading, and plate tectonics are
fruitless exercises in nothingness . .
"The celebrated Bullard fit of the Atlantic continents, and its
successors such as the Smith and Hallam fit of the Gondwana continents, pose
awkward problems of continental overlap and misfit which have not been
adequately explained away. For example, many geologists have been worried by
the loss of much of Central America in the Bullard fit, despite the fact that
extensive areas of old continental rocks occurs there, and attempts to get
round this problem by seemingly arbitrary ad hoc tectonic displacements and
rotations, have lacked plausibility.
"Likewise, if one adopts the Smith-Hallam fit, West Antarctica does
not run naturally into its obvious geological continuation in Patagonia. More
disturbing perhaps, a large gap is left west of Australia, which had led to
the suggestion that the Wharton Basin in that region was ancient ocean, now
disproved by the Deep Sea Drilling Project which had demonstrated that the
basin is underlain by oceanic oust as young as elsewhere. On the other hand,
fitting India against Australia, as others have done, leaves a corresponding
gap in the western Indian Ocean . .
"In looking for missing pieces to the puzzle, some geophysicists have
hypothesized the existence of large pieces of thinned and foundered
continental oust; viz., the Voring Plateau off Norway, a wide area off Nova
Scotia, a region off Angola, and (shades of Atlantis) a sector between Africa
and America . .
"An important implication is that a sector of subsided and attenuated
continent well over 1,000 km wide in places must exist between Africa and
America." —*A. Hallam, Nature, 282:9495 (1978).
2 -
MAGNETIC REVERSALS
There is evidence of magnetic reversals. Are they always localized, or do
some originate from reversals within the earth's core? Do such reversals prove
long ages for earth's history? Both questions will be dealt with in this
section; the second will be considered in this and the next two sections.
Brown provides us with an introduction to the problem:
"Everyone is familiar with a compass needles small magnetized object,
freely pivoted so that it lines up in a magnetic North-South direction. The
behavior of a compass needle is the composite behavior of the
molecular-domain-sized components in its structure. If the needle were ground
into powder and the powder allowed to fall freely, the individual powder would
maintain a magnetic North-South orientation as they fell. In a similar manner
a sediment can [theoretically, but not actually, because of the variety of
problems discussed in chapter appendix, "4 - Ocean Core Dating" preserve
a record of Earth's magnetic field direction at the time the sediment
accumulated. Volcanic ash or lava may contain magnetic particles that preserve
a record of Earth's magnetic field at the time the ash falls or the lava
hardens. The investigation of such records comes under the classification of
paleomagnetism . .
"About half the rods samples representing earlier stages in the
history of Earth's oust are reversely magnetized, i.e., the molecular
domain—sized 'compass needles' in them point southward, rather than
northward as they would if unrestrained at the present time. The surprising
implication is that the geomagnetic field has reversed at some time, or times,
in the past. A sequence of 26 reversals has been recognized for rocks
extending from the Upper Miocene to the present." —A.H. Brown,
"Reversal of Earth's Magnetic Field," in Origins, Vol. 18, no. 2
(1989), p. 81.
Even sandstone can have its iron magnetically reversed when struck by
lightning.
"Anomalous remanent magnetization of sandstone attributed to lightning
strikes is documented in detail for the first time in this paper. The effects
of lightning strikes on the remanent magnetization of volcanic rocks have been
documented previously an a basaltic lava flow by Cox (1961) and in a dike by
Graham (1961)." —*Michael Purucker, EOS, 55:1112 (1974).
One expert in the field, *Tarling, declares that there are simply too many
problems standing in the way of proving long ages from magnetic reversals.
"It is now generally accepted that most of Europe and North American
were contiguous from Devonian to Cretaceous-Tertiary times. On this basis, the
paleomagnetic data of the two continents should also be consistent when the
continents have been placed in their previous relationship. In fact there are
serious, consistent differences between the paleomagnetic data on most
acceptable reconstructions while reconstructions based on the paleomagnetic data
alone do not result in viable continental reconstructions. Such observations
suggest either that the paleomagnetic data still contain consistent errors, the
geomagnetic model is wrong, or that the actual continental relationships were
radically different to all extant models." —*D.H. Tarling, "The
Reliability of Phanerozoic Paleomagnetic Data from Europe, " in
Transactions of the American Geophysical Union 80(32)589 (1979).
*Corliss adds this:
"The modem edifice of Global Plate Tectonics has been built largely upon
the foundation of paleomagnetic data. This foundation, however may be seriously
flawed due to (1) self-reversal of rock magnetism; (2) self magnetism; (3)
distortion of the magnetized sediments; and (4) external physical and chemical
processes that may modify magnetic properties. Caution must be advised in
accepting generalizations based on paleomagnetism." —*W. Corliss,
Unknown Earth: A Handbook of Geologic Enigmas (1980), p. 746.
The cautions suggested by *Corliss are important. Rocks found with
reversed magnetism are not necessarily evidence of an earlier reversal in
earth's core; localized factors in and near the rock may have been responsible.
Yet when a lava flow reveals a change in polarity, we are dealing with something
quite different.
Some creation scientists do not believe that magnetic reversals of earth's
core could possibly occur. In this chapter we assume that they have occurred,
and were caused by the violent eruptions of water and fire that spewed forth
from beneath the surface during and after the Flood.
A key to a proper understanding of magnetic reversals is the fact that they
can occur rapidly. It is not necessary to postulate long ages of time for them
to occur. Both localized and earth-core reversals can occur very quickly.
Humphreys cites newly-discovered evidence from a North American lava flow which
indicates that magnetic reversals of earth's core can occur—and very rapidly.
"A recent paper in Earth and Planetary Science Letters offers
startling new evidence for a creationist view of reversals of the earth's
magnetic geld. The conventional evolutionary view is that a transition from
one magnetic polarity to the other generally took millions of years, certainly
no faster than thousands of years.
"Even small changes in the earth's field today are thought to be
slowed down to a time scale of several years by the field's passage from the
earth's core up through the earth's semiconductive rock mantle. However, at
the 1986 International Conference on Creationism, I proposed that geomagnetic
reversal took place very rapidly, with periods of days to weeks, during the
year of the Genesis Flood. In the conclusions of that paper I suggested that a
good test of my hypothesis would be 'to look for strata which clearly formed
within a few weeks and yet contain a full reversal,' in particular, 'distinct
lava flows thin enough that they would have to cool below the Curie
temperature [50010 700°C (932-1292°F)] within a few weeks.'
"To my delight, two geoscientists have examined such a basalt flow and
found just such a polarity transition recorded in it.
"[Humphreys refers to *R.S. Coe and M. Prevot, "Evidence
Suggesting Extremely Rapid Field Variation During a Geomagnetic Reversal,"
in Earth and Planetary Science Letters 92:290-298 (less)].
"Robert Coe, from the University of California at Santa Cruz, and
Michel Prevot, from the Universite ties Sciences et Techniques at Montpelier
[France], are respected paleomagnetists, well-known for their detailed
investigations of magnetic polarity transitions in the huge Miocene lava flows
at Stems Mountain, Oregon (*Prevot, et. al., 1985).
"Coe and Prevot went back to Stems Mountain and carefully sampled a
relatively thin lava flow, number B51, at a point where their previous
investigations suggested a rapid transition was likely to be recorded.
"The seven flows stratigraphically above B51 are of normal polarity
and the ten flows below it are of reversed polarity. Numerous samples taken
through the several-meter thickness of flow B51 show a bumpy but continuous
transition from the reversed polarity below to the normal polarity above,
using a simple model of heat condution, Coe and Prevot calculated that flow
B51 'would cool to 500°C [932°F] or below in about 15 days.'
"Since magnetic grains in the basalt would 'freeze' their
magnetizations at about that temperature, this means that the transition
had to be made in less than a fortnight. [I] Coe and Prevot comment: '
. . even this conservative figure of 15 days corresponds to an astonishingly
rapid rate of variation of the geomagnetic field of 3° per day.' The
authors acknowledge that such a rate is hard to believe:
" 'The rapidity and large amplitude of goomagnetic variation that we
infer from the remanence directions in flow B51, even when regarded as an
impulse during a polarity transition, truly strains the
imagination.'
"As a result, they carefully consider a number of alternate
explanations, but decide that the most straight-forward interpretation
explains the data best:
" 'We think that the most probable explanation of the anomalous
remanence directions of flow B51 is the occurrence of a large and extremely
rapid change in the geomagnetic field during cooling of the flow, and that
this change most likely originated in the [earth's] core.'
"Are Coe and Prevot correct? As far as I can tell from their paper,
their work is very meticulous and quite thorough . . If Coe and Prevot are
correct, we can infer two important facts about the earth at the time when
this Miocene lava was flowing, a time which most creationists would place
during the latter part of the Flood year, or soon thereafter. First, the
earth's mantle had to have been at least 4 to 5 times less electrically
conductive [more resistant to electromagnetic impulses, and therefore causing
them to travel to the surface more slowly] than it is thought to be today, or
such a rapid change could not have been observed. Second, some physical
process was at work in the earth's core which could produce very rapid
reversals of the earth's magnetic field . .
"The most important implication relates to the geomagnetic time scale.
The magnetic field change recorded in flow B51 was about 50,000 times faster
than the 2000 years previously thought to be the theoretical minimum time for
reversals. According to the conventional time scale, it was millions of times
faster than the shortest reversals actually recorded in the geologic strata.
If all recorded reversals occurred as fast as the one in B51, or even
thousands of times slower, than the age of the geologic strata would be much
less than billions of years. Thus this data is important new evidence for a
young earth." —D. Russell Humphreys, "New Evidence for Rapid
Reversals of the Earth's Magnetic Field," in Creation Research Society
Quarterly, March 1990, pp. 132-133 [italics Humphrey’s].
"Coe and Prevot have analyzed paleomagnetism in a Miocene basalt flow
at Steens Mountain in southeastern Oregon, U.S.A. using cooling models, they
obtained good estimates of the time lapse between when various levels of the
basalt flow cooled to a sufficiently low temperature for the magnetic
characteristics to remain fixed (be recorded). From an analysis of the
paleomagnetism at various levels in the flow, together with the associated
time differences, they were able to establish geomagnetic field change rates
of at least 3 degrees direction and 300 gammas intensity per day. At 3 degrees
change per day a reversal (180 degrees change) could be completed in two
months. Three hundred gammas is in the vicinity of 1/150 of the present
geomagnetic intensity. The available evidence indicates that although the
geomagnetic field intensity deceased during reversals, it did not drop to
zero." —Robert H. Brown, "Reverse! of Earth's Magnetic Field,
" in Origins, Vol. 16, No. 2 (1989), p. 83.
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