Results 11 to 20 of about 47,954 (161)

Genesis of the Baiyangping Cu–Co and Pb–Zn Mineralizations in Lanping Basin, SW China

open access: yesApplied Sciences, 2022
The Oligocene to Miocene Baiyangping Cu–Co and Pb–Zn mineralization was deposited during the collision of the India and Asia continents. The mineralization is hosted in veins in faulted carbonate and clastic rocks, which act as fluid pathways. A detailed
Jiaxuan Zhu   +8 more
doaj   +1 more source

High Precision Strontium Isotope Measurement of Rock Standard Materials by Multi-dynamic TIMS

open access: yesYankuang ceshi, 2023
BACKGROUNDStrontium isotopes are a powerful geochemical indicator for tracing the sources and ages of ore-forming materials. TIMS is internationally recognized as the “gold standard” for determining Sr isotopic compositions, however, its analysis ...
Yuqiu WEI   +4 more
doaj   +1 more source

Analytical solution for residual stress and strain preserved in anisotropic inclusion entrapped in an isotropic host [PDF]

open access: yesSolid Earth, 2021
Raman elastic thermobarometry has recently been applied in many petrological studies to recover the pressure and temperature (P–T) conditions of mineral inclusion entrapment.
X. Zhong   +4 more
doaj   +1 more source

Geological Mapping via Convolutional Neural Network Based on Remote Sensing and Geochemical Survey Data in Vegetation Coverage Areas

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2023
Geological mapping in vegetation coverage areas is a challenging task. In this article, convolutional neural networks (CNNs) were employed for geological mapping in a vegetation coverage area based on remote sensing images and geochemical survey data ...
Ting Pan, Renguang Zuo, Ziye Wang
doaj   +1 more source

Complex Vulnerabilities of the Water and Aquatic Carbon Cycles to Permafrost Thaw

open access: yesFrontiers in Climate, 2021
The spatial distribution and depth of permafrost are changing in response to warming and landscape disturbance across northern Arctic and boreal regions. This alters the infiltration, flow, surface and subsurface distribution, and hydrologic connectivity
Michelle A. Walvoord, Robert G. Striegl
doaj   +1 more source

Carbonation and serpentinization of diopsidite in the Altun Mountains, NW China

open access: yesScientific Reports, 2022
Mineral carbonation of mafic–ultramafic rocks has been highlighted as a promising way for permanent carbon capture and storage. Carbonatization involves the release of Ca, Mg and Fe from silicate minerals by dissolution and reaction in the aqueous phase ...
Dingkui Zhou   +7 more
doaj   +1 more source

Mercury spikes suggest volcanic driver of the Ordovician-Silurian mass extinction

open access: yesScientific Reports, 2017
The second largest Phanerozoic mass extinction occurred at the Ordovician-Silurian (O-S) boundary. However, unlike the other major mass extinction events, the driver for the O-S extinction remains uncertain.
Qing Gong   +8 more
doaj   +1 more source

A Deep-Penetrating Geochemical Prospecting Experiment of Mahuagou Gold Deposit in the Core of the Huangling Anticline, Western Hubei, China

open access: yesApplied Sciences, 2023
The Mahuagou gold deposit is among the most important gold deposits in the core of the Huangling Anticline. However, the geochemical exploration on the surface of the mining area presents challenges due to the thin overburden.
Weihang Zhou   +9 more
doaj   +1 more source

Nickel isotopic evidence for late-stage accretion of Mercury-like differentiated planetary embryos

open access: yesNature Communications, 2021
Based on Nickel isotope analysis of meteorites and terrestrial rocks, the authors suggest that the Bulk Silicate Earth has a sub-chondritic Nickel isotope composition.
Shui-Jiong Wang   +11 more
doaj   +1 more source

A new clinopyroxene thermobarometer for mafic to intermediate magmatic systems [PDF]

open access: yesEuropean Journal of Mineralogy, 2021
Clinopyroxene-only thermobarometry is one of the most practical tools to reconstruct crystallization pressures and temperatures of clinopyroxenes. Because it does not require any information of coexisting silicate melt or other co-crystallized mineral ...
X. Wang   +8 more
doaj   +1 more source

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