scholarly journals Evolution of a hydrothermal fluid-rock interaction system as recorded by Sr isotopes: A case study from the Schwarzwald, SW Germany

2008 ◽  
Vol 95 (3-4) ◽  
pp. 163-178 ◽  
Author(s):  
Johannes Glodny ◽  
Borwin Grauert*
Keyword(s):  
Hydrothermal Fluid ◽  
Sr Isotopes ◽  
Rock Interaction ◽  
Interaction System

scholarly journals Diverse Range of Mineralization Induced by Phase Separation of Hydrothermal Fluid: Case Study of the Yonaguni Knoll IV Hydrothermal Field in the Okinawa Trough Back-Arc Basin

2008 ◽  
Vol 58 (3) ◽  
pp. 267-288 ◽  
Author(s):  
Ryohei Suzuki ◽  
Jun-Ichiro Ishibashi ◽  
Miwako Nakaseama ◽  
Uta Konno ◽  
Urumu Tsunogai ◽  
...  
Keyword(s):  
Phase Separation ◽  
Hydrothermal Fluid ◽  
Okinawa Trough ◽  
Hydrothermal Field ◽  
Diverse Range ◽  
The Okinawa Trough ◽  
Back Arc

scholarly journals Micro-geochemistry and Micro-geomechanics towards understanding proppant shale rock interaction: A Caney shale case study, USA

2021 ◽  
Author(s):  
Allan Katende ◽  
Jonny Rutqvist ◽  
Margaret Benge ◽  
Abbas Seyedolali ◽  
Andrew Bunger ◽  
...  
Keyword(s):  
Rock Interaction ◽  
Shale Rock

scholarly journals On the use of Li isotopes as a proxy for water–rock interaction in fractured crystalline rocks: A case study from the Gotthard rail base tunnel

2017 ◽  
Vol 198 ◽  
pp. 396-418 ◽  
Author(s):  
Christoph Wanner ◽  
Kurt Bucher ◽  
Philip A.E. Pogge von Strandmann ◽  
H. Niklaus Waber ◽  
Thomas Pettke
Keyword(s):  
Crystalline Rocks ◽  
Rock Interaction ◽  
Fractured Crystalline Rocks ◽  
Water Rock Interaction

scholarly journals Silicon in ultrafresh groundwater: a case study of the Imandra Lake catchment, The Kola Peninsula

2019 ◽  
Vol 98 ◽  
pp. 01018
Author(s):  
Natalia V. Guseva ◽  
Yuliya G. Kopylova ◽  
Daria A Vorobeva ◽  
Albina A. Khvashchevskaya ◽  
Zinaida A. Evtyugina
Keyword(s):  
Kola Peninsula ◽  
Catchment Area ◽  
Water Exchange ◽  
Rock Interaction ◽  
Silicon Oxides ◽  
Short Period ◽  
Lake Catchment ◽  
Imandra Lake ◽  
Water Rock Interaction

The ultrafresh groundwater (with TDS values less than 200 mg/L) of the Imandra Lake catchment, Kola Peninsula, is from an intensive water exchange zone, where the water has a short period of contact with the rock. Therefore, the considered water is at the initial stages of the water–rock interaction. The water is saturated with respect to oxides and hydroxides of aluminium and iron. In the groundwater of the Imandra Lake catchment area, the silicon concentrations significantly exceed the concentrations of magnesium and especially potassium. Nevertheless, water is undersaturated with respect to with respect to silicon oxides. The shown enrichment of water with cations is explained by time of water-rock interaction.

scholarly journals Hydrothermal mineral assemblages of calcite and dolomite–analcime–pyrite in Permian lacustrine Lucaogou mudstones, eastern Junggar Basin, Northwest China

2020 ◽  
Author(s):  
Hong Li ◽  
Yiqun Liu ◽  
Kang Yang ◽  
Yongjie Liu ◽  
Yuanzhe Niu
Keyword(s):  
Lake Water ◽  
Hydrothermal Fluid ◽  
Junggar Basin ◽  
Northwest China ◽  
Fault System ◽  
Rock Interaction ◽  
Continental Extension ◽  
Fine Grained ◽  
Mineral Assemblages ◽  
Hydrothermal Mineral

AbstractThe eastern Junggar Basin, controlled by continental extension (rift), was deposited by lacustrine dominated sediments during middle Permian Lucaogou period. An unusual porphyritic-like texture was observed in Lucaogou/Pingdiquan dark fine-grained organic-rich sediments in two sub-tectonic units in the basin. The “phenocrysts” are composed of two types of mineral assemblages. The first is a coarse euhedral calcite assemblage in the Jimusar Sag, and the second consists of dolomite, analcime, and pyrite in the Shishugou Sag. The lithological and mineralogical features indicate a hydrothermal origin for these phenocryst-like minerals. The chondrite-normalized rare earth element patterns show flat or positive Ce anomalies and negative Eu anomalies, which reflect a suboxic to anoxic, off-axis site from the center of the fault system, where the temperature of the hydrothermal fluid might be less than 250 °C. The high ratios of BaN/LaN at 1.6–65.5, strongly positive Sr anomalies at Sr/Sr* = 5.54–39.9, and relatively low 87Sr/86Sr isotopes at 0.705002–0.705776 in the coarse calcite suggest an origin of mixed sources of lake water, underlying biogenetic sediments, and deep magmatic water. However, the low 87Sr/ 86Sr ratios of 0.705321–0.705968 in the dolomite and δ34SV-CDT of 10.8‰–12.3‰ in the pyrite indicate that water–underlying-rock interaction and the abiotic thermochemical sulfate reduction of lake water or organic matter might have participated together resulting in the precipitation of the dolomite–analcime–pyrite assemblages in the Shishugou Sag.

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