The Downfall of Uniformitarianism

Creation-Evolution Headlines ^ | 11/04/2003 | Creation-Evolution Headlines

[bondserv]

The Downfall of Uniformitarianism   11/04/2003
Can major paradigm shifts occur in science today?  Check this one out.
    You’ve seen it on TV science programs and in textbooks: plumes of hot magma from deep in the Earth’s mantle rise through the crust and erupt on the surface (the IMAX movie Yellowstone has computer graphics of the whole process).  Perhaps you’ve seen animations of the Hawaiian Islands riding over a “hot spot” and building its chain of volcanoes over millions of years on its slow, drifting journey.  Textbook diagrams show cross-sections of Earth’s crust, with lava erupting from channels rooted deep in the mantle, while crustal plates float and drift atop deep convection currents.
    That’s all defunct now, and so is a lot of the uniformitarian dogma associated with it, claims Warren B. Hamilton (Colorado School of Mines), in an extensive article in this month’s GSA Today.¹  Uniformitarianism is out, catastrophism is in.  Now, don’t get the idea Hamilton denies the Earth is billions of years old; he still accepts the 4.567 billion year figure, the condensation of Earth from a solar nebula, and all that.  But he replaces Charles Lyell’s old premise “the present is the key to the past” with a new picture that seems to pay homage to Stephen Jay Gould.  He calls his model “Punctuated Gradualism.”  How serious is the subject?  Enough for him to entitle his paper, “An Alternative Earth,” and for it to get prominent press in a journal of the world’s leading geological society.
    Here’s the overview Hamilton provides of his paradigm, and the timeline of catastrophic events he now envisions (Note: Ga = giga-annum, i.e., a billion years.  Emphasis added in all quotes):

The Earth described here differs profoundly from that accepted as dogma in most textbooks and research papers.  Crust and upper mantle have formed a mostly closed system throughout geologic time, and their dramatic temporal changes are responses to cooling.  The changing processes define a Punctuated Gradualism and not Uniformitarianism.  Major stages in Earth evolution:

1. 4.567–ca. 4.4 Ga.  Hot accretion and major irreversible mantle fractionation.  Giant bolides continue to ca. 3.9 Ga.
2. 4.4–3.5 Ga.  Era of nearly global felsic crust, too hot and mobile to stand as continents.
3. 3.5–2.0 Ga.  Granite-and-greenstone era.  Permanent hydrosphere.  Old crust cooled to density permitting mafic melts to reach surface.  Diapiric batholiths mobilized from underlying old crust.
4. 2.0 Ga–continuing.  Plate tectonic era.  Distinct continents and oceans.  Top-down cooling of oceanic lithosphere enables subduction that drives plates, forces spreading, and mixes continental as well as oceanic crust into upper mantle.

While much of this timeline looks standard, some of the underlying changes to assumptions are striking.  The rhetoric is also notable in that the new view is revolutionary, and overthrows long-held beliefs about uniformitarianism and plate tectonics.  Notice his confidence in the abstract: “Plumes from deep mantle, subduction into deep mantle, and bottom-up convective drive do not exist.”  In his Overview, he outlines how the old ideas have died:

The conventional model (e.g., Turcotte and Schubert, 2002) of Earth’s evolution and dynamics postulates that most of the mantle is little fractionated, major differentiation continues, and continental crust has grown progressively throughout geologic time; through-the-mantle convection operates, lithosphere plates are moved by bottom-driven currents, and plumes rise from basal mantle to surface; and plate tectonics operated in early Precambrian time.  All of these conjectures likely are false.  They descend from speculation by Urey (1951) and other pioneers, reasonable then but not now, that Earth accreted slowly and at low temperature from fertile chondritic and carbonaceous-chondritic materials, heated gradually by radioactive decay and core segregation, and is still fractionating.

Hamilton explains that “The notion of a cold, volatile-rich, young planet has long since been disproved,” but its corollary of an unfractionated [i.e., homogeneous, and therefore fluid] lower mantle no longer can stand up to the facts; “major constraints” now rule this view out in favor of shallow crustal activity from the upper mantle and crust.  This includes radioactive heating, of which he says, “Earth’s heat loss, now largely of radiogenic heat, is much overstated in the standard model.” He suggests a value 70% the earlier one, and states, “thermodynamic and mineral-physics data require that nearly all radioactivity be above 660 km (Hofmeister and Criss, 2003),” i.e., no deeper than 400 miles.  At that depth there is a discontinuity that could not be breached by a magma plume.
    In short, most volcanic activity and crustal movement is shallow, and plate tectonics started much later than assumed.  What are some of the ramifications geologists will have to consider if Hamilton’s “Alternative Earth” becomes the new textbook orthodoxy?  Some are technical, but here are a few for the casual reader:

• The heat of volcanism is shallow, not deep.  The early crust did not form continents till much later than earlier assumed.
• Plate tectonics began later.  “Plate tectonics did not operate within preserved Archean crust,” Hamilton asserts, and began (in his timeline) at 2.0 Ga.
• Plate tectonics operates differently.  “What drives plates?” he rhetorically asks.  ”Most published models and explanations overlook known plate characteristics and behavior and instead elaborate false assumptions.”  He describes subduction and seafloor spreading as shallow processes, not driven by convection from deep within the mantle.  Notice how he derides those who have fudged their data to argue for deep mantle motions:

  Many published models are misleading: colors are saturated for lower-mantle anomalies one-tenth or one-fifth the amplitude of upper-mantle ones, huge unsampled volumes are assigned average values or populated with spherical-harmonic artifacts, illusory continuity is generated by severe smoothing and sharpening, cross sections are placed where subduction interpretations look most plausible.  Models account for only a few tenths of traveltime variance, and have not been tested by attempting to squeeze solutions back into upper mantle.  Nonsubduction alternatives receive little evaluation.

• No more mantle plumes allowed.  Of the prototypical Hawaiian Islands case, he says, “There, in its only rigorously testable locale, the fixed-plume concept is falsified.”  How do supporters typically respond?  He claims, “Plume advocates respond to such refutations by making their conjectures ever more complex, unique to each example, and untestable.”  Yet beyond this, “All other geochemical, kinematic, and tectonic plume rationales derive from the misinterpretation that Hawaii stands atop a plume.”
• Pure magma cannot reach the surface.  “Pro-plume conjectures assume wrongly that magmas are transported from melting sites to surface without modification, thereby preserving elemental and isotopic ratios of sources,” he chides.  He is emphatic that this assumption is no longer supportable: “Thermodynamics and phase petrology, including cotectic compositions of basalts and presence of underlying cumulates, prove that instead melts are profoundly modified before eruption (O'Hara and Herzberg, 2002).”  Hamilton continues to take opponents to task, accusing them of circular reasoning and flawed methodologies.
• Island chains can form at once.  Rather than growing by drift of plates over hotspots, they form over “crackspots” that allow heat to the surface: “Island alignments, in this view, reflect regional stresses, perpetuation of directions once established, and lithosphere properties.”  Otherwise plume advocates have to explain how the Hawaiian chain made a 60-degree turn.
• Recycled plate slabs are complex.  “Temperature, age, and isotopic ratios of sunken slabs vary regionally.”  What applies hither may not apply thither or yon.
• Plate tectonics is top-down, not bottom-up.  Cooling at the top drives subduction, producing shallow cycles in the upper crust, all happening above 660 km.  It also allows for rotation of plates, impossible under the bottom-up view, which assumed there could be no net rotation: “The no-net-rotation framework minimizes motions of ridges and randomizes motions of subduction hinges so that many roll forward–impossible with gravity drive.  The lack of rational kinematics in these popular frameworks fosters acceptance of mysterious bottom drives,” he says.

These are just a few of the ramifications mentioned by Hamilton.  Other consequences of this “Alternative Earth” with its shallow motions and shallow heating may become evident if the view becomes mainstream, which appears inevitable (see Aug. 20 and Apr. 1 headlines).

---

¹Warren B. Hamilton, “An Alternative Earth,” GSA Today, Vol. 13, No. 11, pp. 4–12.; DOI: 10.1130/1052-5173(2003)013<0004:AAE>2.0.CO;2.

What’s most interesting about this story is not the new model, which may become the next discarded paradigm in the future, but the frank and revealing charges made against proponents of the old model: that they cheated, lied, and used irrational arguments to prop up their beliefs.  Is that possible in science?  You read it right here.
    Creationists have similarly argued against the standard model for a long time and maybe now are getting some comeuppance.  Dr. Walter Brown, for instance, has complained that deep mantle magma plumes are impossible, because the kinematics and thermodynamics would force the channels shut (see his paragraph on volcanoes and lava).  Volcanism, therefore, must occur at shallow depths.
    What can we learn from this paradigm shift?  Make no mistake: confident-sounding scientific models, replete with professional jargon, (maybe even this one here - cf. 11/14/2002 headline), are written by fallible human beings.  Like a hollow idol on a pedestal, a popular theory about the unobservable past might gleam in the sun for awhile, till toppled by tremors of fact.  Broken on the ground, it is swept away and forgotten, and then a new hollow idol takes its place.  Why hollow?  Because no observer was there to corroborate the processes or the vast periods of time they are assumed to take.  Remember Grand Canyon!  It was the prototypical case of a phenomenon requiring millions of years, yet now the consensus is growing that it was formed catastrophically and recently (see 07/22/2002 headline).  It should seem foolish to place one’s faith in the conjectures of mortals instead of in the testimony of an authoritative Eyewitness.
    Those not beholden to secular geological conjectures might well consider what this paradigm shift may do to other geological conjectures.  It may well cause a domino effect on current models in subjects as diverse as radiometric dating (which assumes pristine, unprocessed material from the deep mantle), planetary differentiation, seismology, volcanology, magnetic field dynamo theory, and even the origin of life.  This model tinkers with temperatures, chemistry, the nature of the core and mantle, the timing of continents, and a host of geophysical processes affecting land and sea.  Evolutionists had better revisit their assumptions about the early earth and what this does to their beliefs.
    Now that mantle plumes and deep plate tectonics are out, who knows what will happen next?  Perhaps Hamilton’s shallow plate tectonics theory will topple for other reasons.  It seems to hinder large migrations of plates, such as the belief that India migrated from lower Africa, crashed into Asia and built the Himalayas.  His choice of terms, “punctuated gradualism,” recalls Stephen Jay Gould’s punctuated equilibria, the “Alternative Earth” model in biology.  It arose out of frustration with the lack of evidence for Darwinian gradualism, not because of positive evidence for the alternative.  Gould replaced that “standard model” (neo-Darwinism) with – what? – a new model with even less empirical support, claiming, essentially, that evolution happens so fast it leaves no trace in the fossil record!  Is Hamilton’s “Punctuated gradualism” a parallel in geology?  It seems, at least, to nail the coffin shut on Lyell’s principle of uniformitarianism.  Whatever happens next, we have just seen that major paradigm shifts are still possible in science.  Kuhnians rejoice.  Darwinians beware.

[Doctor Stochastic]

Non-responsive.

Where in the bible are Germany and France mentioned? What do Germany and France have to do with specific predictions of the 9-11 attacks?

[bondserv]

So if the Sox's had oil and the Yankees had none, the world would hate the Yankees because they tend to win.

World wide political impact.

[MineralMan]

"They are like drop-clothes laid out, before you paint the walls. "

I never drop my clothes before painting. That paint is hard to get off bare skin.

[MineralMan]

"Because of supernatural forces there will be no peace between Arabs and Jews, despite the fact that Britain gave Israelis only 1/6 of 1% of the land recovered from the Ottoman Empire. 99 and 5/6% of the land was given to the people of Islam.

Jerusalem has no port, no water source, and is no longer a trade pathway. Yet the cup of trembling continues to dominate the politics of the entire world. Highly Irrational.

Islamic countries, joined by Russia, will attempt to destroy Israel from the face of the earth. The pattern has been pre-woven.

"

In what way is that a specific prediction?

[bondserv]

Where in the bible are Germany and France mentioned? What do Germany and France have to do with specific predictions of the 9-11 attacks?

It goes to their anti-God evolutionary predilections. More people go to Mosques than churches in these two countries.

Alignment is critical. We choose to love the Middle-Eastern people and send troops, money and missionaries to help them live in freedom.

Supernatural forces compelled these educated middle-easterners to attack innocent Americans on 9-11. They hate the freedom and personal accountability we exhibit in our culture. A large percentage of Americans are free in Christ. Hence the captured missionaries in Afghanistan before the war, despite them not being welcome there.

Free to help those that hate you.

[bondserv]

I never drop my clothes before painting. That paint is hard to get off bare skin.

HAHAHAAA

[MineralMan]

"It goes to their anti-God evolutionary predilections. More people go to Mosques than churches in these two countries.

"

France and Germany? Have you ever been there? There are churches everywhere all across both nations, and people attend them. Mosques are a bit harder to find, although they do exist in the major cities.

Just because you say something does not make it true. You're going to have to support this statement somehow or withdraw it.

[MineralMan]

"It goes to their anti-God evolutionary predilections. More people go to Mosques than churches in these two countries."

OK, the population of Germany is roughly 82.5 million. The Muslim population is roughly 3.2 million. That makes the Muslim population about 3.9% of the total population. From another site, 14% of the German population attends church regularly. You are wrong on that one.

France, with a population of roughly 61.1 million, has a Muslim population of about 5 million. That's just over 8%. Since an estimated 21% of the population of France attends church regularly (as of a 1991 survey), you're wrong on that one as well.

You see, it was easy to find these numbers. Just search for "church attendance countryname" on Google. Then search for "Population countryname" and "Muslim population countryname." I found all these stats within the first two hits on Google. Where did you get your information?

[VadeRetro]

There is a clear line of islands and seamounts leading from the Big Island thousands of miles to the WNW - with a jog to the NW that reflects a change in the direction of the Pacific Plate (a jog reflected in other island/seamount chains in the Pacific).

Hamilton airily says "Plumes are not allowed." In this article at least, he does a lousy job of explaining why plumes are not allowed or why the Hawaiian islands actually falsify the plume concept or how those islands formed if they aren't sitting over a plume.

You can't just say that the seemingly obvious interpretation is not allowed. You have to have a good reason why your version is better. For your version to be better, you have to present a version!

[VadeRetro]

Supernatural forces compelled these educated middle-easterners to attack innocent Americans on 9-11.

No. Belief in supernatural forces makes these people act crazy. There's a warning in that.

[MineralMan]

"Hamilton airily says "Plumes are not allowed." In this article at least, he does a lousy job of explaining why plumes are not allowed or why the Hawaiian islands actually falsify the plume concept or how those islands formed if they aren't sitting over a plume."

Well, it's really just a speculative essay on Hamilton's part. But, it's typical of the kind of extraneous fact-grabbing the creationists do. They find anything they can that disagrees with their notions of what science says, then use a disagreement as proof that science is wrong.

Never mind that this author said nothing about a young earth or anything of the sort. It doesn't matter to the YECcers. I suspect, based on most of the discussion here by the YECcers, that none of them really even bother to read the actual articles. Instead, they find these essays on one creationist site or another and post them blindly here, paying little attention to the logic presented.

Normally, I don't bother with these threads, but this one was more specious than most.

[Sabertooth]

*Supernatural forces compelled these educated middle-easterners to attack innocent Americans on 9-11.

**No. Belief in supernatural forces makes these people act crazy. There's a warning in that.

Evidence, either way?

[Doctor Stochastic]

Preponderence of evidence. I have never observed a supernatural force nor seen any indirect evidence for one. I have observed many people who claim to believe in such forces.

[Junior]

Placemarker (gee, thanks for pinging me...).

[bondserv]

Their supernatural belief's compelled them to destroy innocent lives. The Father of Lies has his way with those who believe in the supernatural or not.

A woman is raped and chooses to abort the baby for fear it will remind her of her rape.

A woman is beaten by her husband and chooses to kill her 1 year old because the baby reminds her of her husband.

Two gay men can't find release for their lust so they anally rape a young boy and suffocate him to death.

We kill animals and humans are just smart animals...

Any idea that facilitates sin must be handled with fear and trembling.

[Sabertooth]

Preponderence of evidence. I have never observed a supernatural force nor seen any indirect evidence for one.

Absence of evidence doesn't equal evidence of absence.

Science deals with natural phenomena through natural observation, and isn't equipped to confirm the presence or absence of supernatural phenomena.

Conclusions either way are leaps of faith.

[bondserv]

I have never observed a supernatural force nor seen any indirect evidence for one. I have observed many people who claim to believe in such forces.

I have tried to demonstrate some tangible reasons for you to see the truth of this Scriptural passage.

Eph 6:12-13
12 For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.
13 Wherefore take unto you the whole armour of God, that ye may be able to withstand in the evil day, and having done all, to stand.

[Doctor Stochastic]

None of your posts has been responsive to my questions.

[bondserv]

Hitler swayed a nation based on his charisma?

[MineralMan]

"Their supernatural belief's compelled them to destroy innocent lives. The Father of Lies has his way with those who believe in the supernatural or not.

A woman is raped and chooses to abort the baby for fear it will remind her of her rape.

A woman is beaten by her husband and chooses to kill her 1 year old because the baby reminds her of her husband.

Two gay men can't find release for their lust so they anally rape a young boy and suffocate him to death.

We kill animals and humans are just smart animals...

Any idea that facilitates sin must be handled with fear and trembling.'

I'm curious. How on earth did we get from a story about a new theory about the formation of this planet to the rant above? What does this have to do with the topic of this thread?