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  1. 33821
  2. 33822

    GEOQUÍMICA DE YACIMIENTOS DE LA FORMACIÓN CABALLOS EN EL CAMPO ORITO. PUTUMAYO-COLOMBIA by C. R POSADA, A RANGEL, P RODRÍGUEZ, L. E PÉREZ, R GAVIRIA

    Published 2001-01-01
    “…It was found that the compositional differences of the produced hydrocarbons from the Pepino and Caballos Formations are produced by the fact that the crude were originated by different source rocks each one with different grades of thermal maturity. …”
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  3. 33823

    3D mineral exploration Cu-Zn targeting with multi-source geoscience datasets in the Weilasituo-bairendaba district, Inner Mongolia, China by Meng Gao, Gongwen Wang, Gongwen Wang, Gongwen Wang, Yunchou Xu, Nini Mou, Leilei Huang, Ling Zuo, Rong Wu

    Published 2023-04-01
    “…The district’s structure framework consists of the NE-trending regional faults, while the secondary faults provide channels and space for mineralization. The ore-bearing rocks are either Baoyintu Group gneisses or quartz diorites. …”
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  4. 33824
  5. 33825

    Content Characteristics and Influencing Factors of Soil Selenium in Western Muchuan County, Sichuan Province by CHENG Xiao-meng, SUN Bin-bin, HE Ling, WU Chao, ZHAO Chen, ZENG Dao-ming

    Published 2021-11-01
    “…Soil Cd content was the main factor causing the great difference between selenium-enrich soil and nuisanceless selenium-rich soil. (2) The geological background was closely related to the soil selenium content, which was mainly controlled by carbonate rocks, sandstone and siltstone intercalated with carbonaceous strata. …”
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  6. 33826

    Basis of petroleum geological theory and exploration direction for ultra-deep exploration of 10 000-meter depth by Xiaohui JIN, Qingqiang MENG, Dongsheng SUN, Jinqiang TIAN, Shiyou LIANG, Qiang LI

    Published 2023-09-01
    “…Additionally, the field of clastic rocks such as the deep strata in the central deep depression zone in Junggar Basin and the Kuqa Depression in Tarim Basin are also important areas of exploration of 10 000-meter depth.…”
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  7. 33827

    Experimental Characteristics of Hydrocarbon Generation from Scandinavian Alum Shale Carbonate Nodules: Implications for Hydrocarbon Generation from Majiagou Formation Marine Carbon... by Yiqing Wang, Yaohui Xu, Junping Huang, Jianglong Shi, Heng Zhao, Qingtao Wang, Qiang Meng

    Published 2023-08-01
    “…The hydrocarbon source rocks of the marine carbonates of the Ordovician Majiagou Formation in the Ordos Basin are generally in the high-overmature stage and are, therefore, not suitable for hydrocarbon thermal simulation experiments. …”
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  8. 33828

    Origin of Zn-Pb Mineralization of the Vein Bt23C, Bytíz Deposit, Příbram Uranium and Base-Metal Ore District, Czech Republic: Constraints from Occurrence of Immiscible Aqueous–Carb... by Jana Ulmanová, Zdeněk Dolníček, Pavel Škácha, Jiří Sejkora

    Published 2024-01-01
    “…The source of volatiles can be (i) in deep crust, (ii) from interactions of fluids with sedimentary wall rocks and/or (iii) in overlying Permian piedmont basins containing, in places, coal seams. …”
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  9. 33829

    Proposed Model for Shale Compaction Kinetics by James Edward Smith, Edward Millard Smith-Rowland

    Published 2021-03-01
    “…Shales are the most abundant class of sedimentary rocks, distinguished by being very fine-grained, clayey, and compressible. …”
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  10. 33830

    Chinese Historical Perceptions of the Xisha Islands and Study of Changes under the Action of Wind, Tides, and Waves by Yan Genqi, Wu Hao

    Published 2024-02-01
    “…The geological studies revealed that islands are usually formed over a long period of time (approximately 4,000 years or more) and above the water surface, with beach rocks formed around them and a large amount of coral detritus accumulating on the embankment, which in turn forms a sand dike encompassing the dyke and the coastline. …”
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  11. 33831

    The Ilha Anchieta Quartz Monzonite: the southernmost expression of ca. 500 Ma post-collisional magmatism in the Ribeira Belt by José M. Azevedo Sobrinho, Valdecir A. Janas, Antonio Simonetti, Larry M. Heaman, Jair santoro, Hélio N. Diniz

    Published 2011-09-01
    “…The Ilha Anchieta Quartz Monzonite (IAQM) occupies most of the homonymous island in the coast of the state of São Paulo, and is intrusive into foliated rocks of the ~565 Ma Ubatuba Charnockite. The main petrographic variety is a porphyritic biotite-hornblende quartz monzonite with 2-4 cm tabular microcline megacrysts set in a medium-grained groundmass and magmatic foliation. …”
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  12. 33832

    PATTERNS OF THE REGIONAL URANIUM STATUS FORMATION ON THE EXAMPLE OF THE REPUBLIC OF BASHKORTOSTAN by Anastasia N. Zlobina, Leila M. Farkhutdinova, Iskhak M. Farkhutdinov, Alexandra I. Belyanovskaya, Natalia V. Baranovskaya, Elena I. Chesalova, Anvar M. Farkhutdinov, Larisa A. Khayrulina, Elizaveta V. Krestyannikova

    Published 2023-10-01
    “…Uneven uranium distribution is explained by both natural (a wide variety of rocks, hydrogeological and tectonic factors) and technogenic factors (development of oil and ore deposits). …”
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  13. 33833

    Study on REE Distribution and Mineralogical Characteristics of Different Garnets by Electron Probe and Inductively Coupled Plasma-Mass Spectrometry by JIA Yu-heng, QIAN Jian-ping

    Published 2020-11-01
    “…BACKGROUND Garnet is a common silicate mineral in metamorphic and magmatic rocks, and its isomorphism is very common. The existing data show that the color of garnet with different composition is quite different, but the relationship between the composition and color of garnet has not been systematically studied. …”
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  14. 33834

    The evolution of refertilized lithospheric mantle beneath the northeastern Siberian craton: Links between mantle metasomatism, thermal state and diamond potential by Sergei Skuzovatov, Vladislav S. Shatsky, Alexey L. Ragozin, Alexander P. Smelov

    Published 2022-11-01
    “…Here, we use the results of comprehensive major and trace-element studies of detrital garnets from diamond-rich Late Triassic (Carnian) sedimentary rocks in the northeastern Siberia to constrain the thermal and chemical state of the pre-Triassic mantle and its ability to sustain the diamond storage. …”
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  15. 33835

    Geoinformatics Perspective of Landslide and Catastrophic Flash Floods in Dhauliganga, Uttarakhand, India by Deepti Kumari Dwivedi, Arun Kumar Saraf, Josodhir Das

    Published 2023-05-01
    “…The north-facing triangular shape had a base of about 660 m and 1100 m height and the estimated total volume calculated was 20 million cubic meters, including rocks, snow, and ice. The debris flow runout simulation of the event was performed using the RAMMS debris flow model to calculate flow depth, flow velocity and maximum pressure. …”
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  16. 33836

    Sulfur and oxygen isotope compositions of Upper Triassic sulfates from Northerm Apennines (Italy): palaeogeographic and hidrogeochemical implications by T. BOSCHETTI, G. CORTECCHI, L. TOSCANI, P. IACUMIN

    Published 2011-07-01
    “…It was concluded that sulfate in springs derives from Upper Triassic evaporite existing locally at depth (Burano Formation), whereas sulfate in streams is manifestly a mixture of Burano Formation sulfate with supergene sulfate from oxidation of sulfide in the rocks. In sulfurous springs, both sulfur and oxygen isotope fractionations with respect to the source sulfate signatures may be ascribed to bacterial effects. …”
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  17. 33837

    Hydrogeochemical Characteristics and Human Health Risk Assessment of Fluoride Enrichment in Water in Faulted Basins of Qinghai-Tibet Plateau—A Case Study of Sanhe Plain in Guide Ba... by Ruiping Liu, Fei Liu, Youning Xu, Hua Zhu, Jiangang Jiao, Refaey M. El-Wardany

    Published 2023-05-01
    “…There are two main hydrogeological characteristics: the properties of the water-bearing rocks and groundwater conditions controlled the groundwater in guide basin. …”
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  18. 33838

    Significance of Calcite Trace Elements Contents and C-O Isotopic Compositions for Ore-Forming Fluids and Gold Prospecting in the Zhesang Carlin-Like Gold Deposit of Southeastern Yu... by Jiasheng Wang, Jinyang Chang, Chao Li, Zhenchun Han, Tao Wang, Huanhuan Han

    Published 2020-04-01
    “…According to the REE, C-O isotopic characteristics of the calcites and the previous findings, it is inferred that the ore-forming fluids of the Zhesang gold deposit were a mixture of crustal fluid by meteoric water leaching wall rocks and a small amount of basic magmatic fluid. …”
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  19. 33839

    Driving Forces of Natural Gas Flow and Gas–Water Distribution Patterns in Tight Gas Reservoirs: A Case Study of NX Gas Field in the Offshore Xihu Depression, East China by Xianke He, Jun Li, Dongping Duan, Binbin Liu, Xiaoqing Shang, Wenjun Li, Zeyang Xu, Zhiwei Du, Chenhang Xu

    Published 2023-08-01
    “…In contrast, in H3a, H4b and H5a gas layers, buoyancy is not sufficient to overcome the capillary force to make the gas migrate during and after accumulation, and the driving force of gas flow is the overpressure formed by fluid volume expansion during hydrocarbon generation of Pinghu Formation source rocks. Because buoyancy is not the driving force of natural gas flow, H3a, H4b and H5a layers have gas and water in the same layer and produced together, and no boundary and bottom water, where the anticlinal trap does not control the distribution of gas and water, and gas source faults control the boundary of the gas reservoir. …”
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  20. 33840

    Determination of Rare Earth Elements in Soil and Stream Sediment by Inductively Coupled Plasma-Mass Spectrometry with Automatic Graphite Digestion by ZENG Meiyun, HE Qisheng, SHAO Xin, YANG Xiaoli

    Published 2023-05-01
    “…BACKGROUND Rare earth elements were used as geochemical tracers usually to provide important information for revealing the genesis of rocks and minerals, geochemical conditions of diagenesis and mineralization, material sources and magmatic differentiation and evolution, due to their stable chemical properties and high degree of uniformity. …”
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