Glycerol dialkyl glycerol tetraether lipids are a class of membrane lipids synthesized by archaea and some bacteria, making them useful biomarkers for these organisms in the geological record. Their p
Chemical structures of representative isoprenoid GDGTs
Molecular structures and HPLC detection of GDGTs. Retrieved from Tierney and Tingley (2015).
Proxy (climate)
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In the study of past climates, climate proxies are preserved physical, chemical, and even biological characteristics of the past that stand in for direct meteorological, climatological, and environmen
Glycerol dialkyl glycerol tetraether
…resulting in increased thermal stability and allowing for survival at higher temperatures, GDGT distribution and abundance can be employed as paleoclimate proxies. TEX86 is one such paleothermometer which relates distribution and relative abundance of GDGT-1, GDGT-2, GDGT-3, and crenarchaeol isomer to past sea…
δ18Oair and δDice for Vostok, Antarctica ice core.
Tree rings seen in a cross section of a trunk of a tree.