Two positive δ13C excursions are presented in records from the Frasnian-Famennian (F-F) marine carbonate sediments in Europe, America, Africa, and Australia, h
Abundance of C3 and C4 photosynthesis plants can be inferred relatively from stable carbon isotopic composition of organic matter in soils. The samples from fiv
The sulphur cycle responds to changes in seawater chemistry, biological evolution and tectonic activity. We follow an isotopic approach in order to constrain th
A number of Fe-Ti oxide and Fe-Cu sulfide exsolution phases are found in amphibole cumulate xenoliths from Mesozoic granodioritic plutons at Jiguanshi and Jin-
The Xiangyang reticulate red clay section was newly sampled in high-resolution. The viewpoints different from the previous studies[1-7] are put forward after st
A 5-Ma record from ODP Site 1143 has revealed the long-term cycles of 400-500 ka in the carbon isotope variations. The periodicity is correlatable all over the