Concept information
Terme préférentiel
geochemical proxy
Définition
- The utility of geochemical proxies requires chemical analysis of geological samples. Since there is no means of directly measuring past climates and environments, proxy indicators are employed as indirect measures of the main processes. Information for environmental reconstruction comes from both organic and inorganic sources, even though organic matter (OM) typically constitutes a minor fraction of sediments. These proxies may reveal details about paleotemperature, phytoplankton community structure, vegetation history, dust provenance, nutrient cycles and availability, ocean circulation and paleoredox conditions. (Adapted from: https://link.springer.com/referenceworkentry/10.1007/978-1-4020-4411-3_89)
Concept générique
Traductions
-
français
URI
http://data.loterre.fr/ark:/67375/QX8-0LM19VGQ-4
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