Xiaomei Wang

TL;DR: It is inferred that dissolved oxygen led to the transformation of hopane precursors into rearranged hopanes during the early stages of diagenesis, and the hydrocarbon signatures point towards oxic bottom waters during the deposition of Unit 3 of the Xiamaling Formation, which is consistent with the earlier oxygen-minimum zone environmental interpretation of this Unit.

TL;DR: It is suggested that there was sufficient atmospheric oxygen for animals long before the evolution of animals themselves, and that rising levels of Neoproterozoic oxygen did not contribute to the relatively late appearance of animal life on Earth.

TL;DR: It is shown with shale-hosted chromium isotopes that sufficient atmospheric oxygen for crown-group animals likely predated their evolution by over 400 million years and thus the possibility that a permissive environment existed long before the expansion of various eukaryotic clades.

TL;DR: Geochemical and sedimentological evidence for repeated, short-term climate fluctuations from the exceptionally well-preserved ∼1.4-billion-year-old Xiamaling Formation of the North China Craton is reported.

TL;DR: In this article, the authors analyzed three major hydrocarbon bearing intervals in the Lunnan lower bulge for their stable carbon isotopes and molecular biomarkers and concluded that the recently discovered deep (6500m) eastern Lungu giant Ordovician gas condensate pool with an estimated reserve of 723 million bbl oil equivalent is a secondary hydrocarbon accumulation derived from the mixing of an early formed oil and a late formed gas.