Database (dataset) composition The Database consists of libraries of 1∶50 000-scale mineral and geologic maps and their map decorations, geophysical databases, remote sensing databases, sample databases, comprehensive result databases, and prospecting engineering databases. The 1∶50 000-scale mineral...
Database (dataset) composition This database consists of a 1∶50 000 geological map library and map decorations. The geological map library includes nine basic element datasets (geological polygon, geological boundary, attitude, photograph, sketch, fossil, isotope age, drillhole, river-lake-sea-rese...
F. (1989). Chemical and isotopic systematics of oceanic basalts: Implications for mantle composition and processes. In A. D. Saunders, & M. J. Norry (Eds.), Magmatism in the ocean basins (pp. 313–345). Geological Society, Special Publication (Vol. 42). https://doi. org/10.1144/GSL...
1.Introduction One of the major challenges in Geoscience is to understand how the formation and evolution of the Earth System are governed by timescales-that is,how the various geological processes that continue to contribute to its present-day structure and composition operated in the deep past....
composition of rocks and their age by hatching. All standard designations with their explanations are put in the map’s table of standard designations (its legend). The insert referred to above provides an example of the general color legend and the indexing of geological formations as ...
dominantly adamellitic composition. Mylonites and pseudotachylites are also common. Some of the large khondalitic restites occur in the form of domal structures and folds with variable axial trends. Sign in to download full-size image Figure 3.34.Geological map of Jeypore-Berhampur corridor.SSZ, ...
Diatom assemblages may change for reasons other than subsidence. For example, breaching and closing barriers can cause changes in salinity that may affect the composition of diatom assemblages. However, the stable dominance of planktonic diatoms (Thalassiosira lacustrisandCyclotella atomusvar.gracilis) (...
Due to increasing offshore pollution, the stable succession and development trend of marine ecosystems has been broken. It is thus important to identify and regulate the quantity, composition and transportation of pollutants in offshore regions and their behavior in marine ecosystems. In particular, ...
Atmospheric dust is an important feedback in the climate system, potentially affecting the radiative balance and chemical composition of the atmosphere and providing nutrients to terrestrial and marine ecosystems. Yet the potential impact of dust on the climate system, both in the anthropogenically distu...
Temperatures and oxygen-isotope composition of Phanerozoic oceans. Earth-Sci. Rev. 146, 92-104 [83] Veizer, J., et al., 1999. 87Sr/86Sr, δ13C, and δ18O evolution of Phanerozoic seawater. Chem. Geol. 161, 59-88 [84] Wu, Y., Chu, D., Tong, J., Song, H., Dal Corso...