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OverviewStudies of Sr isotopic composition of thousands of samples of marine sediments and fossils have yielded a curve of 87Sr/86Sr versus age for seawater Sr that extends back to 1 billion years. The ratio has fluctuated with large amplitude during this time period, and because the ratio is always uniform in the oceans globally at any one time, it is useful as a stratigraphic correlation and age-dating tool. The ratio also appears to reflect major tectonic and climatic events in Earth history and hence provides clues as to the causes, timing, and consequences of those events. The seawater 87Sr/86Sr ratio is generally high during periods marked by continent-continent collisions, and lower when continental topography is subdued, and seafloor generation rates are high. There is evidence that major shifts in the seawater ratio can be ascribed to specific orogenic events and correlate with large shifts in global climate. Full Product DetailsAuthor: B. Lynn Ingram (University of California, Berkeley) , Donald J. DePaolo (University of California, Berkeley)Publisher: Cambridge University Press Imprint: Cambridge University Press Edition: New edition Dimensions: Width: 15.30cm , Height: 0.30cm , Length: 22.80cm Weight: 0.069kg ISBN: 9781108994293ISBN 10: 1108994296 Pages: 75 Publication Date: 31 March 2022 Audience: General/trade , General Format: Paperback Publisher's Status: Active Availability: Manufactured on demand  We will order this item for you from a manufactured on demand supplier. Table of ContentsReviewsAuthor InformationTab Content 6Author Website:Countries AvailableAll regions |
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