Results 51 to 60 of about 264,999 (349)
, 2020 Crude oil obtained from the Southwest Depression of the Tarim Basin contains high concentrations of rearranged hopanes. However, the geochemical factors controlling this phenomenon, and the correlation between the rearranged hopanes and other biomarkers ...
Luo, Tao +5 more
core +1 more source
Deep Underground Science and Engineering, EarlyView.This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu +8 more
wiley +1 more source
Journal of Economic Geology, 2017 Introduction The Varandan Ba-Pb-Cu deposits are located15 km southwest of the town of Qamsar and approximately 7 km south west of the Qazaan village, in the Urumieh- Dokhtar magmatic arc.
Fayeq Hashemi +2 more
doaj +1 more source
Geochemical and geochronological investigations of the vumba granite-greenstone terrain of NE Botswana [PDF]
, 2000 U-Pb SHRIMP ages were determined for five samples representative of various granitoid groups from the Vumba granite-greenstone terrain, south western margin of the Zimbabwe craton in NE Botswana. These age data range from 2733 ± 5 Ma or 2696 ± 3.5 Ma (if
Bagai, Zibisani
core
Deep Underground Science and Engineering, EarlyView.This study investigates the hydro‐mechanical response and fracture evolution in depleted sandstone reservoirs during CO2 injection, considering both direct wellbore injection and hydraulic‐fracture‐assisted injection. The graphical abstract illustrates how CO2 injection induces dynamic stress redistribution, leading to natural fracture activation ...
Haiyang Wang +6 more
wiley +1 more source
Environmental Progress &Sustainable Energy, EarlyView.Abstract The behavior of aluminum‐bearing phases in tank wastes from the southwest quadrant of the Hanford Site's 200 West Area primarily determines solids accumulation, retrieval performance, and downstream processability. This review synthesizes historical tank characterization data, laboratory dissolution studies, and process‐relevant observations ...
Brett C. Simpson +2 more
wiley +1 more source
Petrogenesis of lavas from Detroit Seamount: Geochemical differences between Emperor Chain and Hawaiian volcanoes [PDF]
, 2005 The Hawaiian Ridge and Emperor Seamount Chain define a hot spot track that provides an 80 Myr record of Hawaiian magmatism. Detroit Seamount (∼76 to 81 Ma) is one of the oldest Emperor Seamounts.
S. Huang +8 more
core +1 more source
Notable Impact of Paleotectonic Stress on Gold Mineralisation in the West Qinling Orogen
Geological Journal, EarlyView.By applying fuzzy clustering and multiple inverse methods, we systematically processed the data of vein and fault slip in this ore deposit to reveal the transition of orogenic geological environment and paleotectonic stress field. Our research results show two different stress states: the northwest–southeast extensional stress field and the northeast ...
Hongyan Wang +3 more
wiley +1 more source
The Future of GEOROC: Database Curation for the Geochemical Community
The GEOROC database (Geochemistry of Rocks of the Oceans and Continents) was born in 1999 at the Max Planck Institute in Mainz (Germany) under the leadership of A. W. Hofmann and B. Sarbas. For 25 years, GEOROC has served the geochemical community. Since
Traun, Marie Katrine +1 more
core +1 more source
Geological Journal, EarlyView.This study reports the exceptional preservation of the Eocene freshwater bivalve Batissa sitakaraensis from Hokkaido, Japan. Multimodal analyses reveal that both the aragonitic shell mineralogy and the delicate organic periostracum retain their original structural and chemical characteristics after millions of years.
Taro Yoshimura +4 more
wiley +1 more source