Journal of Earth Science
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Zircon U-Pb geochronological evidence for the evolution of the Nan-Uttaradit suture in northern Thailand
Journal of Earth Science - Tập 27 - Trang 378-390 - 2016
The Nan-Uttaradit suture is marked by a narrow N-S trending and discontinuous ophiolite belt in northern Thailand. This suture zone is a mélange composed of gabbro, tholeiitic metabasalt, andesite and radiolarian chert. Samples of gabbro and meta-basalt in the Nan-Uttaradit suture yield zircon U-Pb ages of 311±10 and 316±3 Ma, respectively, interpreted as the crystallization ages of the rocks, sug...... hiện toàn bộ
Identification of the Ore-Forming Anomaly Component by MSVD Combined with PCA from Element Concentrations in Fracture Zones of the Laochang Ore Field, Gejiu, SW China
Journal of Earth Science - Tập 32 Số 2 - Trang 427-438 - 2021
Investigation of Stable C and Cl isotope effects of trichloroethene and tetrachloroethylene during evaporation at different temperatures
Journal of Earth Science - Tập 25 - Trang 735-740 - 2014
There are variations of reported isotope enrichment factors of chlorinated organic contaminants in evaporation processes. Trichloroethene (TCE) and tetrachloroethylene (PCE) were chosen to study carbon and chlorine isotope effects during evaporation at different temperatures. Equilibrium vapor-liquid carbon and chlorine isotope effects experiments were also conducted. In the equilibrium liquid-vap...... hiện toàn bộ
Hydrogeochemical Modeling of the Shallow Thermal Water Evolution in Yangbajing Geothermal Field, Tibet
Journal of Earth Science - Tập 30 - Trang 870-878 - 2018
The exploitation of thermal water and the mix of cold water changed the properties of geofluid in shallow reservoir, which altered the concentration of the chemical constitutes and continuously built new water-rock reaction. This paper deduced reservoir pressure and temperature variation tendency from 2004 to 2013, analyzed the change of some components in the shallow reservoir water, and finally ...... hiện toàn bộ
River-delta systems: a significant deposition location of global coal-measure source rocks
Journal of Earth Science - Tập 27 - Trang 631-641 - 2016
Natural gas is providing a larger proportion of primary energy, and will soon surpass oil to become the most important fossil fuel. There are various genetic types of natural gas of which the type that pyrolysed or cracked from humic kerogen accounts for 70% of presently discovered global natural gas reserves. The parent material of humic kerogen is higher multi-cellular plants. Investigations of ...... hiện toàn bộ
What Caused the Inconsistency between Rb−Sr and 40Ar−39Ar Ages of Authigenic Illites?
Journal of Earth Science - Tập 33 - Trang 1145-1151 - 2022
Radiogenic isotope dating of illitic clays has been widely used to reconstruct thermal and fluid flow events in siliciclastic sedimentary basins, the information of which is critical to investigate mechanisms of hydrocarbon maturation. This study carried out Rb−Sr and 40Ar−39Ar dating of authigenic illitic clay samples separated from the Palaeogene sandstone in the northern South China Sea. Our Rb...... hiện toàn bộ
Reservoir Regulation for Control of an Ancient Landslide Reactivated by Water Level Fluctuations in Heishui River, China
Journal of Earth Science - Tập 31 - Trang 1058-1067 - 2020
Due to the complex geological processes of Qinghai-Tibet Plateau, numerous deposits, especially the large-scale ancient landslide deposits, are characteristic features of the valleys incised in southwestern China. Intense water level fluctuations since 2011 in Maoergai Reservoir, China, registered the reactivation of Xierguazi ancient landslide, and presented a significant risk to neighboring faci...... hiện toàn bộ
Quantification of the Mixture of Hydrothermal and Fresh Water in Tectonic Valleys
Journal of Earth Science - Tập 31 - Trang 1007-1015 - 2020
This study was conducted to identify the origin, hydrogeochemical processes and evolution of groundwater in a tectonic valley. This study was carried out with the aim of quantifying the proportions of groundwater flows contributing to the water chemistry abstracted in a zone of convergence favored by the presence of active faults. The study area is located in the Trans-Mexican Volcanic Belt. End m...... hiện toàn bộ
Understanding Miocene climate evolution in Northeastern Tibet: Stable carbon and oxygen isotope records from the Western Tianshui Basin, China
Journal of Earth Science - Tập 25 - Trang 357-365 - 2014
To investigate climate evolution during the Miocene, especially during the Middle Miocene climate transition on the northeastern Tibetan Plateau, stable oxygen and carbon isotopes of carbonates from a 288-m-thick lacustrine-fluvial sediment sequence covering the period from 17.1 to 6.1 Ma from Tianshui Basin, China, were analyzed. The relatively low stable oxygen isotope values indicate the preval...... hiện toàn bộ
Applicability of Two Newmark Models in the Assessment of Coseismic Landslide Hazard and Estimation of Slope-Failure Probability: An Example of the 2008 Wenchuan Mw 7.9 Earthquake Affected Area
Journal of Earth Science - - 2019
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