Computer Science
Scientific paper
Nov 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004eostr..85..450c&link_type=abstract
EOS Transactions, AGU, Volume 85, Issue 44, p. 450-452
Computer Science
Geochemistry: Geochemical Cycles (0330), Geochemistry: Low-Temperature Geochemistry, Meetings
Scientific paper
Earth's evolution, its climate history, and the history of life are archived in the chemical and isotopic compositions of marine and terrestrial sediments and fossils found within them. This information provides evidence for crus-mantle recycling, bolide impacts, mass extinction events, gas hydrate expulsion, climate cycles, and much more. Much of this geochemical evidence, such as the discoveries of oxygen isotope cycles in Quaternary sediments, enhanced iridium at the Cretaceous/Paleocene boundary, and relationships between near-trench sediments and associated arc volcanics, have overturned paradigms, opened new avenues of inquiry, and helped launch international research programs (e.g., Deep Sea Drilling Project [DSDP]). In addition to revealing much about important Earth events and processes, geochemical records preserved in marine and terrestrial sediments are increasingly important for correlation of global records; indeed, for Precambrian and anoxic sediments, chemical and isotopic methods are indispensable and provide the main basis for correlation.
Cervato Cinzia
Goldstein Steven L.
Grossman Ethan L.
Lehnert Kerstin
McArthur John M.
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