The distribution of 'molecular fossils' (bio-markers) of steroid compounds in extracts from some spe-cific geologic age in the Tarim Basin have been analyzed andare used as the fingerprints for the oil-source rock c...
the National Science-Technology Project of the Nineth Five-Year Plan of China: "95-111-01" ; the Stanford-China industrial affiliates ; the Stanford molecular organic geochemistry industrial affiliates programs.
The coccoid fossils covered with thick gelatinous envelop containing several gametes are discovered in gyps and salt deposits of Cambrian, H4 well and chert bed of the base of Yuertus Formation (∈11) of Xiaoerbulake ...
Steroid hydrocarbons, mainly derived from sterol precursors in the cell membrane of eucaryote such as algae and high plants, are widespread in. various fossil fuels and sediments. Among steroids, dinosteranes, i.e. 4,...