Paleogeographic Evolution and Non-Glacial Eustacy: Northern South America
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Paleogeographic Evolution and Non-Glacial Eustacy: Northern South America
James L. Pindell, Charles Drake
Published eustatic cycle charts commonly call for eustatic fluctuations of more the 40 m every few million years or less. These cycles are interpreted as eustatic, but, so far, waxing and waning of continental glaciations in the only known mechanism which clearly has the ability to drive such large, short-term eustatic fluctuations.
PDF ebook file size: 107 mb
ISBN 978-1-56576-041-7
eISBN 978-1-56576-181-0
Title information
Published eustatic cycle charts commonly call for eustatic fluctuations of more the 40 m every few million years or less. These cycles are interpreted as eustatic, but, so far, waxing and waning of continental glaciations is the only known mechanism which clearly has the ability to drive such large, short-term eustatic fluctuations. High-magnitude, high-frequency "glacio-eustatic cyclicity" may be a valid concept for times of continental glaciations, but what about times when such glaciations was absent from Earth? Why do cycle charts have a similar form and style for time periods with and without glaciation? Is it that we have missed the identification of a fundamental driving cause which is as important as glaciation and which might have operated during non-glacial times? Or, is it that we are confusing local and eustatic drivers of relative sea-level change? These persistent questions, and others, continue to cast doubt on the entire subject of sequence correlatability. The papers in this book collectively address these questions.
PDF ebook file size: 107 mb