Details

Autor(en) / Beteiligte

• Martinez-Frias, J
• Lazaro, E
• Esteve-Nunez, A

Titel

Geomarkers versus Biomarkers: Paleoenvironmental and Astrobiological Significance

Ist Teil von

• Ambio, 2007-07, Vol.36 (5), p.425-426

Ort / Verlag

Sweden: Royal Swedish Academy of Sciences

Erscheinungsjahr

2007

Quelle

MEDLINE

Beschreibungen/Notizen

• The specific works in which the term geomarker are particularly quoted deal with: i the use of benzohopanes as geomarkers of sediments and petroleums (14); ii the characterization of oil shales, using the alkane geomarkers as indicators of the immature character of sediments and the nature and environmental features of the source (15); iii the utilization of spectroscopic techniques (Raman spectroscopy) for planetary exploration in the near future to search for extinct or extant life signals (16); iv the use of some minerals (graphite) to carry out paleogeographic reconstractions (17, 18); and v the use of mineralogical textures, crystal-chemical features and isotopic values as geomarkers in methanogenic and hydro thermal chimneys (19, 20).