Contradictions of slate formation resolved?

Ben A. van der Pluijm, Nei-Che Ho, Donald R. Peacor and Richard J. Merriman ()
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Ben A. van der Pluijm: University of Michigan
Nei-Che Ho: University of Michigan
Donald R. Peacor: University of Michigan
Richard J. Merriman: British Geological Survey

Nature, 1998, vol. 392, issue 6674, 348-348

Abstract: Abstract Slate is formed from clay-rich mud in response to tectonic stress. It has been studied for more than 150 years and was among the first geological features to be analysed on the microscopic scale1. Early observations2 recognized the importance of micaceous minerals to the splitting of slate into thin sheets, whereas current hypotheses for slate formation emphasize either mechanical processes (grain rotation and grain kinking) or chemical processes (grain dissolution and new growth). Despite a vast body of work, no single scenario incorporates these seemingly contradictory mechanisms3,4. Here we offer a unifying model that views the mechanisms as a function of the combined thermal and strain energy of the system.

Date: 1998
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DOI: 10.1038/32810

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