magnetites, the old earth's ally

TC, For the third time in recent days, message 181 in http://www.evcforum.net/cgi-bin/dm.cgi?action=page&f=1&t=29&p=12 has come back to haunt you.....

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Originally posted by Mark:"Prevot & Coes data relates to a period immediately after a polarity reversal, & therapid sawtooth reversals appear to be a result of the near zero field intensity of the time. This effect needs study, but most definitely doesn’t falsify the dynamo theory of the earths magnetic field. So, Prevot & Coes phenomenon occurs at the time of reversal, when field strength is at a minimum, & is not indicative of the overlying change.

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http://www.agu.org/revgeophys/robera01/node4.html

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Hawaiian lava flows which were erupted immediately following a geomagnetic reversal. They note that field intensities were low during the transition and unusually high in the interval immediately following the reversal, similar to the behavior observed in the Steens Mountain (Oregon) volcanic sequence [ Prvot et al., 1985]. A coherent picture therefore seems to be emerging that indicates that field intensities decay during a polarity chron, culminating in low values during the polarity transition, followed by a rebound to high intensities in the interval immediately after the transition. Nevertheless, the details of this asymmetrical saw-tooth paleointensity pattern of Valet and Meynadier [1993] will remain the subject of debate until such behavior is more widely observed.

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I am tempted to leave this here, but feel the need to refute rapid polarity change as the norm, rather than a low field intensity effect. Arguing from within your framework, I would expect this phenomenon to be well documented, since the volcanic/tectonic processes at the time, you claim were much, much higher, as such, so would be the rate of lava extrusion. If the magnetic polarity were frantically reversing, then this effect would be present in most lavas. But it isn’t. Furthermore, sedimentation rates of deep sea cores are measured, & at no point is there any evidence of catastrophism. Indeed, there is no reason to believe that the sedimentation rate at any given location, is particularly different in earlier years, when lower layers of cores were deposited. In other words, surface sedimentation rate is entirely in concordance with the layers beneath it. These layers, show magnetic polarity reversals at large time intervals, currently in the 100,000s of years order, these are corroborated by the sea floor spreading stripes of polarity reversal. Given the calm conditions necessary for deposition of this nature, it is reasonable to assume that it never occurred during such catastrophic conditions as the creationist flood. Yet the paleomagnetic layers are still there, corroborating the seafloor spreading basalt magnetic alignment. All of this means that; Magnetic polarity stripes, velocity of seafloor spreading measurements, & sea floor cores magnetically aligned sedimentary layers, remains as evidence of the relative constancy of sea floor spreading.

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Mark------------------
Occam's razor is not for shaving with.

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[This message has been edited by mark24, 03-14-2002]

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Originally posted by Joe Meert:
TC: How about it? Will you be the first creationist to stop using the Coe and Prevot studies incorrectly?

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Cheers

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Joe Meert

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Joe,TC has the response to mesage 181 ,Is the Global Flood Feasible? Discussion Q&A, (see 250) in hand. Methinks I'll leave the Coe & Prevot response to you Mark------------------
Occam's razor is not for shaving with.