Based on the quantitative study of calcarous (foraminifera and ostracoda) and siliceous (diatom, radiolarian and sponge spicule) microorganisms in 41 surface sediment samples from the Chukchi and Bering Seas, we find that planktonic foraminifera are absent in the surface sediments, which could be attributed to the low surface productivity and strong carbonate dissolution in the study area.

An elementary description of carbonate mineral grownextensively in gold deposit;

The cathodoluminescence and trace elements in carbonate minerals;

Controlling factors of cathodeluminescence of carbonate minerals

X-ray diffraction and petrography analysis showed that the burial depth from 2500 meters to 3000 meters was favorable to diagenetic evolution of clay and carbonate minerals in source rock.

Mineralogical examination and stable isotope analyses for the Lake Qinghai sediments indicate that authigenic carbonate minerals are present either in the form of one type or several types in the sediments, and that large differences in δ18O of up to 6.

Silicate minerals and carbonate are the main rock-forming minerals of the earth s crust.

The relationship between the formation of some typical mineral (the authigenic pyrite and the ferruginous carbonate) and hydrocarbon is discussed in this paper, based on the correlation of stratigraphic features and diagenetic mineral in different structural belt in the Member 3 of Shahejie Formation from Dongying Depression.