-
33821
-
33822
GEOQUÍMICA DE YACIMIENTOS DE LA FORMACIÓN CABALLOS EN EL CAMPO ORITO. PUTUMAYO-COLOMBIA
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. …”
Get full text
Article -
33823
3D mineral exploration Cu-Zn targeting with multi-source geoscience datasets in the Weilasituo-bairendaba district, Inner Mongolia, China
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. …”
Get full text
Article -
33824
Thermal State, Thickness, and Composition of the Lithospheric Mantle beneath the Upper Muna Kimberlite Field (Siberian Craton) Constrained by Clinopyroxene Xenocrysts and Compariso...
Published 2020-06-01“…Clinopyroxene-poor or -free peridotitic rocks such as harzburgites and dunites may be evident at depths of 140–180 km in the Upper Muna mantle. …”
Get full text
Article -
33825
Content Characteristics and Influencing Factors of Soil Selenium in Western Muchuan County, Sichuan Province
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. …”
Get full text
Article -
33826
Basis of petroleum geological theory and exploration direction for ultra-deep exploration of 10 000-meter depth
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.…”
Get full text
Article -
33827
Experimental Characteristics of Hydrocarbon Generation from Scandinavian Alum Shale Carbonate Nodules: Implications for Hydrocarbon Generation from Majiagou Formation Marine Carbon...
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. …”
Get full text
Article -
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...
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. …”
Get full text
Article -
33829
Proposed Model for Shale Compaction Kinetics
Published 2021-03-01“…Shales are the most abundant class of sedimentary rocks, distinguished by being very fine-grained, clayey, and compressible. …”
Get full text
Article -
33830
Chinese Historical Perceptions of the Xisha Islands and Study of Changes under the Action of Wind, Tides, and Waves
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. …”
Get full text
Article -
33831
The Ilha Anchieta Quartz Monzonite: the southernmost expression of ca. 500 Ma post-collisional magmatism in the Ribeira Belt
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. …”
Get full text
Article -
33832
PATTERNS OF THE REGIONAL URANIUM STATUS FORMATION ON THE EXAMPLE OF THE REPUBLIC OF BASHKORTOSTAN
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). …”
Get full text
Article -
33833
Study on REE Distribution and Mineralogical Characteristics of Different Garnets by Electron Probe and Inductively Coupled Plasma-Mass Spectrometry
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. …”
Get full text
Article -
33834
The evolution of refertilized lithospheric mantle beneath the northeastern Siberian craton: Links between mantle metasomatism, thermal state and diamond potential
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. …”
Get full text
Article -
33835
Geoinformatics Perspective of Landslide and Catastrophic Flash Floods in Dhauliganga, Uttarakhand, India
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. …”
Get full text
Article -
33836
Sulfur and oxygen isotope compositions of Upper Triassic sulfates from Northerm Apennines (Italy): palaeogeographic and hidrogeochemical implications
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. …”
Get full text
Article -
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...
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. …”
Get full text
Article -
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...
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. …”
Get full text
Article -
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
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. …”
Get full text
Article -
33840
Determination of Rare Earth Elements in Soil and Stream Sediment by Inductively Coupled Plasma-Mass Spectrometry with Automatic Graphite Digestion
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. …”
Get full text
Article