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In the Chengdu–Jianyang area, the volcanic rocks are mainly of alkaline basic and ultrabasic types. The effusive facies dominated by volcaniclastic rocks does not develop …
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temporal and spatial distribution of Late Mesozoic igneous rocks from the southeastern margin of the Songliao Basin, we propose that Early Cretaceous volcanic rocks formed in an extensional tectonic setting that was closely related to rollback ... Chengdu 611756, China. 688 International Journal of Earth Sciences (2024) 113:687–712 ...
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A suite of sedimentary-volcaniclastic rocks intercalated with the volcanic rocks unconformably overlies the Triassic Xiaochaka Formation in the Woruo Mountain region, Qiangtang Basin, northern Tibet. The vitric tuff from the base of these strata gives a SHRIMP zircon U-Pb age of 216 ± 4.5 Ma, which represents the age of the Late Triassic volcanic-sedimentary events in …
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Widely distributing of volcanic rocks, having complex and diverse types, and FMI and ECS data lacking, make it difficult to identify lithology of volcanic rocks in mesozoic of Bohai Bay.
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Furthermore, the eruption and filling processes of the igneous rocks were restored, and the hydrocarbon geologic significance of the volcanic eruption events was …
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Exploring intrusive processes through the crystal cargo of volcanic rocks: The case of lava flows from Taranaki volcano, New Zealand. Author links open overlay ... Elemental distribution images were obtained with 15 kV of accelerated voltage and 50 nA of beam current with a 2 μm de-focused beam and 20 ms of dwell time. X-ray intensities were ...
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Relationship between Permian volcanic rocks distribution and karst paleogeomorphology of Maokou Formation and its significance for petroleum ... Chengdu 610041, China; 3. …
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Energy Science & Engineering is a sustainable energy journal publishing high-impact fundamental and applied research that will help secure an affordable and low carbon energy supply.
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The ~ 260-Ma Emeishan large igneous province in SW China and northern Vietnam contains low-Ti tholeiitic basalts, high-Ti alkaline basalts and minor peralkaline volcanic rocks.The flood basalts in Longzhoushan, Sichuan Province, SW China, comprise four units, each of which has volcanic breccia at the base. From the base upward, rocks of Units 1 and …
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The volcano-sedimentary sequences from the Weixi belt provide significance for the Sanjiang Paleo-Tethys evolution. This manuscript constrains the ages of volcano-sedimentary sequences by LA-ICPMS U–Pb, including bimodal volcanics (245.0–244.0 Ma) from Pantiange Formation, trachyandesite–basaltic andesite (234 ± 2.0 Ma) from Cuiyibi Formation, …
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In view of the complex reservoir heterogeneities within weathered volcanic rocks, tak-ing the Carboniferous volcanic weathered profile reservoir of the northwest Junggar Basin as an example, this study aims to characterize weathered volcanic rocks by the core, thin slice, log interpretation, and experimental test. The Carboniferous volcanic ...
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Permian volcanic rocks are widely developed in the western Sichuan Basin (southwestern China), with a thickness of more than 200 m. ... which is situated on the border of Chengdu an d Suining ...
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Abstract Based on data from cores, cuttings, thin sections, and logging and seismic activities, the lithofacies, geophysical response, and spatial distribution characteristics of the Permian igneous rocks in the northern part of central Sichuan were analyzed and summarized. Furthermore, the eruption and filling processes of the igneous rocks were restored, and the hydrocarbon …
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Volcaniclastic rocks are important unconventional oil and gas reservoirs from which it is difficult to determine the protolith due to strong metasomatic alteration. Intensive alteration has occurred in much of western China, but few robustly documented examples are known from which to assess the alteration processes. Further recognition from the petrological and mineralogical record is ...
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Temporal and Spatial Distribution of Volcanic Ash . Early and Middle Triassic (245.0 to 235.0 Ma) 46 36 31 ... volcanic rocks, particularly tuffs, are more difficult to
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Many subduction-related land-arc volcanic rocks and gabbroic rocks were formed in the Mianlue Suture Zone and the South Qinling ... Master's Thesis, Chengdu University of Technology, Chengdu, China, 2020. (In Chinese). ... The orange area shows the distribution of Late Permian volcanic ash samples in Shangsi, with data from Huang et ...
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Buy decorative high-quality natural volcanic black lava rocks for aquarium, garden and home decoration. Perfect for landscaping and available in best quality packing. Simply select the rock size you need, then choose the weight required. With this information, you'll receive a price quote tailored to your specifications. Once you're satisfied, you'll have the option to add the lava …
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Chengdu University of Technology. ... and enhances the ability for special geological body study such as igneous rock distribution and lithology identification. ... Carboniferous volcanic rocks of ...
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The ~ 260-Ma Emeishan large igneous province in SW China and northern Vietnam contains low-Ti tholeiitic basalts, high-Ti alkaline basalts and minor peralkaline volcanic rocks.
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Based on outcrop, drilling, logging, geochemical analysis and seismic data, the karst landform and distribution of Permian volcanic rocks at the end of the sedimentary period of the Maokou ...
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The lithogeochemical characteristics show that the Fuyuangou intermediate-basic volcanic rocks, belonging to calc-alkaline series, are enriched in LILEs(Ba, K and Sr) and LREEs, and depleted in HFSEs(Nb, Ta, Ti and P) and HREEs, with the geochemical features of arc magmatic rocks. The determination of the volcanic rocks suggests an intermediate ...
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The paleo-geothermal field of a basin is closely related to the formation and evolution of geothermal, oil, and gas resources. To ascertain the characteristics of the paleo-geothermal field in the Songliao Basin during some critical periods, this study established the thermal conductivity column of rocks in the basin using measurements from 269 samples and compiled previous …
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Distribution of early Late Permian volcanic rocks in Southwest China and stratigraphic column of the western Sichuan Basin (modified from the data of the former Ministry of Geology and Mineral, 2017). ... The volcanic rock across Chengdu–Jianyang area …
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Chengdu umqi Harbin YZ NCC (SK) TA CT YZB NCC(SKC) ... Precambrian volcanic rock and sedimentary rock ... 2.3. Distribution of Orebody. The Cu-Pb-Zn ore deposits
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Southwest Oilfield Company, PetroChina, Chengdu 610051, China Guohui LI Research Institute of Exploration and Development, Southwest Oil and Gas Field Branch Company, PetroChina, Chengdu 610041; Corresponding author Danlin YING Research Institute of Exploration and Development, Southwest Oil and Gas Field Branch Company, PetroChina, Chengdu 610041
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In this paper, the chronology and geochemistry of the volcanic rocks of the Dianzhong Formation in the Konglong Township area of the central Gangdise are studied. The volcanic rocks of the Dianzhong Formation in Konglong Township Xizang are is a set of acidic, peraluminous, high-potassium, calcium-alkaline rocks, which are rich in large ion lithophile …
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Fracture propagation simulation and construction parameter optimization of eruptive phase volcanic rock, Zhou, Lang Zhou, Huali Zhang, Li Li, Rui Wang, Ming Jing, Rong Zeng
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A new paleo-weathering crust occurred at the top of Carboniferous and Permian strata and Xioachaka Formation was discovered in the central uplift of the Qiangtang basin,the north Qiangtang depression and the south Qiangtang depression during field investigation of petroleum geology.It indicates a regional distributionbined with the basal conglomerate observed …
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Distribution of early Late Permian volcanic rocks in Southwest China and stratigraphic column of the western Sichuan Basin (modified from the data of the former Ministry of Geology and Mineral, 2017). ... The volcanic rock across Chengdu–Jianyang area generally involves the eruptive facies and represents good reservoir belts. The volcanic ...
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A diversity of faults offered migration pathways to gather hydrocarbon, and late faulting around basin margin also acted on gas distribution. Because of progressive …
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Xiang Chen's 26 research works with 227 citations and 1,068 reads, including: Preparation and performance of an environmental-friendly degradable semi-interpenetrating network temporary plugging ...
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The Permian volcanic reservoir in Sichuan Basin is mainly composed of three types of volcanic rocks (basalt, tuff and breccia), showing an intertwined distribution of their …
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The Carboniferous volcanic rocks are mainly composed of volcanic lava, volcanic breccia, and tuff, etc, which formed in a volcanic arc environment. As a result of the weathering and denudation, the weathered profile can be divided into four layers: weathered clay layer, intensive weathered zone, weak weathered zone, and unweathered compacted zone.
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Volcanic rocks, born from the depths of the Earth's molten core, have captivated the human imagination for centuries. ... The most common of these rocks is basalt, known for its dark color and widespread distribution. Basalt forms the foundation of many volcanic islands and oceanic crusts, contributing to their unique geological makeup. ...
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In the West Kunlun Mountains, four volcanic fields (Kangxiwa, Dahongliutan, Qitaidaban and Quanshuigou) are distributed along the Dahongliutan fault, which is c. 180 km long. Based on field investigations, chronological measurements and geochemical analysis of some volcanic fields, the results of geological, geochemical and geophysical research in …
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Geological Exploration and Development Research Institute, Chuanqing Drilling Engineering Company Limited, CNPC, Chengdu 610051, China; Online: Published: About author:LIU Jinku, E-mail: 565816635@qq
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Stimulation of oil and gas volcanic reservoirs is quite topical, while particular stimulation mechanisms of various fracturing technologies applied to volcanic rocks need to be clarified.
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This article summarizes the geological setting, spatial-temporal distribution, and major-element, trace-element, and Nd-Sr-Pb isotopic compositional variation of rocks representative of Tibetan postcollisional magmatic activity.
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degree of alkalinity of volcanic rocks, the Rittmann index is generally adopted.2 If the Rittmann index is less than 3.3, it is calc-alkaline rock, 3.3-9 is alkaline rock, and >9 is called …
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