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32841
Preliminary modeling investigation on changes in Karst fractures and seepage field in rockmass between streams with equal water levels
Published 2024-01-01“…Further, the change in fractures aperture due to dissolution of Karst rocks was simulated with predictions on the state of fractures and quasi-steady state seepage in a 10 ka period. …”
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32842
Extraction of metal values from iron-rich mine tailings via chloridized roasting and water leaching
Published 2024-06-01“…The surge in mining and mineral processing to meet metal demand has led to accumulation of mining by-products like tailings, waste rocks, and acid mine drainage, containing high iron, copper, nickel, and zinc concentrations. …”
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32843
Segment‐Scale Seismicity of the Ultraslow Spreading Knipovich Ridge
Published 2021-02-01“…Aseismic deformation in these regions may indicate weakening of mantle rocks by alteration. We do not find obvious indications for major detachment faulting that characterizes magma‐poor spreading at some ultraslow spreading segments. …”
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32844
Whole petroleum system and hydrocarbon accumulation model in shallow and medium strata in northern Songliao Basin, NE China
Published 2023-08-01“…The shallow–medium strata in northern Songliao Basin have the conditions for the formation of whole petroleum system, with sufficient oil and gas sources, diverse reservoir types and well-developed transport system, forming a whole petroleum system centered on the source rocks of the Cretaceous Qingshankou Formation. Different types of oil and gas resources in the whole petroleum system are correlated with each other in terms of depositional system, lithologic association and physical property changes, and they, to a certain extent, have created the spatial framework with orderly symbiosis of shallow–medium conventional oil reservoirs, tight oil reservoirs and shale oil reservoirs in northern Songliao Basin. …”
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32845
Study on the Mineralogical and Optical Characteristics of Blue Opal from Lishui Investigated by XRF-SEM-XRD-FTIR
Published 2014-11-01“…As a consequence, these blue ores are preliminary classified as quasi-opals and named as a variant of volcanic-type opals since the geological structure of Jinyun area has the characteristics of Mesozoic volcanic rocks. Based on FE-SEM investigation, the iridescent effect is attributed to imbricate structure on ore surface. …”
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32846
The rise of feathered dinosaurs: Kulindadromeus zabaikalicus, the oldest dinosaur with ‘feather-like’ structures
Published 2019-02-01“…Here we present the first dating of the Kulinda locality, combining U-Pb analyses (LA-ICP-MS) on detrital zircons and monazites from sedimentary rocks of volcaniclastic origin and palynological observations. …”
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32847
Geological Constraints on the Genesis of Jagpura Au-Cu Deposit NW India: Implications from Magnetite-Apatite Mineral Chemistry, Fluid Inclusion and Sulfur Isotope Study
Published 2022-10-01“…It is inferred that the variation in the sulfur isotopic compositions of sulfides is due to the cooling and dilution of the metalliferous fluid of mixed origin, derived from the basement meta-sedimentary rocks and the high saline basinal fluid. The iron oxide-copper-gold-apatite associations, structural control of mineralization, pervasive hydrothermal alteration, fluid salinity and sulfur isotope compositions indicate that the Jagpura Au-Cu deposit is similar to the iron oxide-copper-gold (IOCG)-iron oxide-apatite (IOA)types of deposits. …”
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32848
Shore platform and cliff notch transitions along the La Paz Peninsula, southern Baja, Mexico
Published 2015-06-01“…The shore platforms were fairlynarrow (a few tens of metres) and steeper (1º) than most platforms in similar microtidal environments, reflectinga weak wave environment and resistant rocks. Mean TMEM downwearing (vertical erosion) rates for each of thethree platforms ranged from 0.14mm yr-1 to 0.42mm yr-1. …”
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32849
Crustal Mercury Addition Into the Giant Jinchuan Ni‐Cu Sulfide Deposit, China, and Its Geological Implications
Published 2022-05-01“…However, δ34S provides poor constraints on the sulfur source, and the early reported anomalous Δ33S values (+0.12 to +2.67‰) in the Jinchuan deposit support the involvement of external sulfur from Archean and Proterozoic sedimentary rocks during the formation of this deposit, similar to the case of Hg. …”
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32850
Electric property evidences of carbonification of organic matters in marine shales and its geologic significance: A case study of the Lower Cambrian Qiongzhusi shale in the souther...
Published 2014-12-01“…The low resistivity of dry samples from this highly mature organic-rich shale and ultra-low resistivity on downhole logs can be used to directly judge the degree of organic matter carbonification and the quality of source rocks; (2) in the Changning area, the Qiongzhusi shale shows low resistivity of dry samples and low to ultra-low resistivity on logs, indicating that organic matters are seriously carbonized, while in the Weiyuan area, the Qiongzhusi shale shows a basically normal resistivity on log curves, indicating its degree of graphitization between the Longmaxi Fm. and Qiongzhusi Fm. in the Changning area; (3) shale with medium-to-high resistivity is remarkably better than that with ultra-low resistivity in terms of gas generation potential, matrix porosity and gas adsorption capacity; (4) industrial gas flow has been tested in the organic shales with medium-to-high resistivity in the Jianwei–Weiyuan–Tongnan area in the north, where the Qiongzhusi shale is a favorable shale gas exploration target.…”
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32851
Genetic differentiation, demographic history and distribution models of high alpine endemic vicariants outline the response of species to predicted climate changes in a Central Asi...
Published 2022-11-01“…Although the occurrence of both species is closely associated with calcareous rocks, the differences in the ranges of the species distributions depend mostly on climatic factors, especially temperature and precipitation. …”
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32852
Automatic measurement of three-phase contact angles in pore throats based on digital images
Published 2023-04-01“…The results show that, for water-wetting rocks, the mean value of the contact angles is acute angle during the early stage of the water flooding process, and it increases with the displacement time and becomes obtuse angle in the middle-late stage of displacement as the dominant force of oil phase gradually changes from viscous force to capillary force. …”
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32853
The improvement of sparsity gravity inversion using an adaptive lanczos bidiagonalization method
Published 2023-01-01“…The detection of sharp boundaries between anomalous bodies and host rocks is an interesting point in the geological frameworks. …”
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32854
Application of Geo-informatics for Survey the Ephiphytic Plants in Tad Sung Waterfall Forest Park, Kalasin Province
Published 2021-03-01“…Because due to born on low places such as on the trees and rocks. The surrounding area is deciduous and mixed-deciduous forests. …”
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32855
Chemical Modification of Lherzolite Xenoliths Due to Interaction with Host Basanite Melt: Evidence from Tumusun Volcano, Baikal Rift Zone
Published 2023-03-01“…To investigate the process and chemistry of mineral reaction zone formation, we conducted detailed petrographic observations and chemical analysis of rocks and minerals of spinel lherzolite xenoliths from basanites of Tumusun volcano (Baikal Rift Zone). …”
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32856
Microbially induced calcium carbonate precipitation in fossil consolidation treatments: Preliminary results inducing exogenous Myxococcus xanthus bacteria in a miocene Cheirogaster...
Published 2023-07-01“…Due to its efficiency in bioconsolidation of carbonate ornamental rocks, Myxococcus xanthus inoculation on carbonate fossils was studied in this research.Treatment was tested on nine fossil samples from decontextualized fragments of Cheirogaster richardi specimens (Can Mata site, Hostalets de Pierola, Catalonia, Spain). …”
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32857
Evaluation of Karst Spring Discharge Response Using Time-Scale-Based Methods for a Mediterranean Basin of Northern Algeria
Published 2021-10-01“…On the other hand, the impacts of human activities on streamflow due to the looting of rocks and sands in the Sebaou River valleys have reached alarmingly high levels that require urgent intervention for the protection of water and ecological resources and their better rational use.…”
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32858
Diversity and Carbon Sequestration of Seaweed in the Ma’an Archipelago, China
Published 2022-12-01“…Gouqi Island had the longest shoreline, and there, the distribution depth of the seaweed reached 15 m and the area of the seaweed community was the largest. The slope of the rocks in the Sanheng survey area was large and the width of the seaweed community was small. …”
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32859
Multiscale modeling of reservoir systems using geostatistical methods
Published 2023-05-01“…Identifying factors and quantifying the processes, influencing the extent of reservoir rocks and the distribution of their heterogeneities are fundamental prerequisites to improve the characterization of reservoir connectivity and its dynamic functioning. …”
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32860
The Panasqueira Rare Metal Granite Suites and Their Involvement in the Genesis of the World-Class Panasqueira W–Sn–Cu Vein Deposit: A Petrographic, Mineralogical, and Geochemical S...
Published 2020-06-01“…Late muscovitisation (Fe–Li–Ms1) was pervasive in all facies, more intense in the G4 cupola, where quartz replacement yielded quartz-muscovite (pseudo-greisen) and muscovite only (episyenite) rocks. These alterations were prone to yield rare metals to the coeval quartz-wolframite veins.…”
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