Geofluids

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Mineralized Granitic Porphyry of the Yangla Copper Deposit, Western Yunnan, China: Geochemistry of Fluid Inclusions and H-O, S, and Pb Isotopes
Geofluids - Tập 2020 - Trang 1-32 - 2020
Xinfu Wang, Bo Li, Shenjin Guan, Olivier Nadeau, Tang Guo
The Yangla copper deposit (YCD) is located in the central part of the Jinshajiang tectonic belt (Jinshajiang metallogenic belt) and is one of the most important copper deposits which has the large-scale copper reserves of the northwestern Yunnan, China. The ore bodies are strictly controlled by the stratum, pluton, and structure, which are layered, lens, and vein-like within the contact or...... hiện toàn bộ
Study on Wellbore Stability and Failure Regions of Shale considering the Anisotropy of Wellbore Seepage
Geofluids - Tập 2021 - Trang 1-13 - 2021
Zhang Fan, Houbin Liu, Yingfeng Meng, Shuai Cui, Hefu Ye
The hard and brittle shale formation is prone to collapse and instability, and the penetration of drilling fluid along the bedding reduces the mechanical properties of rock near the borehole wall, resulting in serious downhole accidents. Therefore, in this paper, the geomechanical parameters of the reservoir in the Longmaxi formation of Jiaoshiba were determined by field hydraulic fracturi...... hiện toàn bộ
Geofluid Systems of Koryaksky-Avachinsky Volcanoes (Kamchatka, Russia)
Geofluids - Tập 2017 - Trang 1-21 - 2017
A. V. Kiryukhin, V. Yu. Lavrushin, P.A. Kiryukhin, P.О. Voronin
The Koryaksky-Avachinsky volcanogenic basin, which has an area of 2530 km2, is located 25 km from Petropavlovsk-Kamchatsky City and includes five Quaternary volcanoes (two of which, Avachinsky (2750 masl) and Koryaksky (3456 masl), are active), and is located within a depression that has formed atop Cretaceous basement rocks. Magma injection zones (dikes and chamber-li...... hiện toàn bộ
Gas breakthrough experiments on pelitic rocks: comparative study with N2, CO2 and CH4
Geofluids - Tập 4 Số 1 - Trang 61-80 - 2004
Alexandra Amann‐Hildenbrand, Stefan Schlömer, Bernhard M. Krooß, Ralf Littke
AbstractThe capillary‐sealing efficiency of intermediate‐ to low‐permeable sedimentary rocks has been investigated by N2, CO2 and CH4 breakthrough experiments on initially fully water‐saturated rocks of different lithological compositions. Differential gas pressures up to 20 MPa were imposed across samp...... hiện toàn bộ
The experimental investigation of soil gas radon migration mechanisms and its implication in earthquake forecast
Geofluids - Tập 10 Số 4 - Trang 556-563 - 2010
L. L. Chyi, T. Quick, Tsanyao Frank Yang, C. H. Chen
AbstractLaboratory experiments were performed to help understand the fluctuations and the spike‐like anomalies of Rn in a time series that was recorded continuously at monitoring stations. One of the experiments indicated that Rn is adsorbed on the surface of sand particles and can be liberated with minor changes in the physical conditions of the containing medium....... hiện toàn bộ
Long‐term chemical evolution and modification of continental basement brines – a field study from the Schwarzwald, SW Germany
Geofluids - Tập 16 Số 3 - Trang 604-623 - 2016
Benjamin Walter, Mathias Burisch, Gregor Markl
AbstractHighly saline, deep‐seated basement brines are of major importance for ore‐forming processes, but their genesis is controversial. Based on studies of fluid inclusions from hydrothermal veins of various ages, we reconstruct the temporal evolution of continental basement fluids from the Variscan Schwarzwald (Germany). During the Carboniferous (vein type i), q...... hiện toàn bộ
Fluid flows and metal deposition near basement /cover unconformity: lessons and analogies from Pb–Zn–F–Ba systems for the understanding of Proterozoic U deposits
Geofluids - Tập 10 Số 1-2 - Trang 270-292 - 2010
Marie‐Christine Boiron, ‪Michel Cathelineau, Antonin Richard
Geofluids (2010) 10, 270–292AbstractFluid circulation at basement/cover unconformities is of first importance for metal transfer and especially the formation of Pb–Zn, F, Ba and U‐deposits. This is typically the case for world‐class Proterozoic U deposit...... hiện toàn bộ
A Statistical Constitutive Model considering Deterioration for Brittle Rocks under a Coupled Thermal-Mechanical Condition
Geofluids - Tập 2018 - Trang 1-10 - 2018
Meiben Gao, Tianbin Li, Tao Wei, Lubo Meng
Due to active actions of groundwater and geothermal, the stability of underground engineering is important during geological structure active area. The damage mechanical theory and statistical mesoscopic strength theory based on Weibull distribution are widely used to discuss constitutive behaviors of rocks. In these theories, a statistical method is used to capture mesoscopic properties o...... hiện toàn bộ
Evaluation of Floods and Landslides Triggered by a Meteorological Catastrophe (Ordu, Turkey, August 2018) Using Optical and Radar Data
Geofluids - Tập 2020 - Trang 1-18 - 2020
Sultan Kocaman, Beste Tavus, Hakan A. Nefeslioğlu, Gizem Karakaş, Candan Gökçeoğlu
This study explores the potential of photogrammetric datasets and remote sensing methods for the assessment of a meteorological catastrophe that occurred in Ordu, Turkey in August 2018. During the event, flash floods and several landslides caused losses of lives, evacuation of people from their homes, collapses of infrastructure and large constructions, destruction of agricultural fields, ...... hiện toàn bộ
Carbon and Hydrogen Isotopic Reversals in Highly Mature Coal-Derived Gases: A Case Study of Paleozoic Gases in the Southern Ordos Basin, China
Geofluids - Tập 2019 - Trang 1-23 - 2019
Dan Liu
The compositional carbon isotopic seriesδ13C-CH4<δ13C-C2H6<δ13C-C3H8<δ13C-C4...... hiện toàn bộ
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