Shields , Graham A., and Veizer, Ján (2004) Isotopic signatures. In: The Great Ordovician: biodiversification event. Critical Moments and Perspectives in Earth History and Paleobiology . Columbia University Press, New York, USA, pp. 68-71.
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Here we review current understanding of the isotope chemistry of Ordovician seawater as determined from published analyses of the isotopic compositions (strontium, neodymium, sulfur, carbon, and oxygen) of marine authigenic precipitates. Isotopic data have implications for our understanding of global dynamics and paleoenvironmental evolution; however, many published interpretations are still controversial. In general, the past 20 years have witnessed a laudable departure from using bulk samples to carefully selected calcite components, such as microstructurally pristine brachiopods and early marine cements, as subjects of geochemical study.
|Item Type:||Book Chapter (Research - B1)|
|FoR Codes:||04 EARTH SCIENCES > 0402 Geochemistry > 040299 Geochemistry not elsewhere classified @ 100%|
|SEO Codes:||97 EXPANDING KNOWLEDGE > 970104 Expanding Knowledge in the Earth Sciences @ 100%|
|Deposited On:||23 Dec 2009 09:44|
|Last Modified:||13 Feb 2011 01:43|
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