Preliminary modeling investigation on changes in Karst fractures and seepage field in rockmass between streams with equal water levels by Youjun JIAO, Qibo HUANG, Xusheng WANG, Qingchun YU

“…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. …”
Get full text

Extraction of metal values from iron-rich mine tailings via chloridized roasting and water leaching by Swati Pramanik, Aarti Kumari, S.K. Sahu, Basudeb Munshi

“…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. …”
Get full text

Segment‐Scale Seismicity of the Ultraslow Spreading Knipovich Ridge by Michaela Meier, Vera Schlindwein, John‐Robert Scholz, Jonah Geils, Mechita C. Schmidt‐Aursch, Frank Krüger, Wojciech Czuba, Tomasz Janik

“…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. …”
Get full text

Whole petroleum system and hydrocarbon accumulation model in shallow and medium strata in northern Songliao Basin, NE China by He ZHANG, Xiaojun WANG, Chengzao JIA, Junhui LI, Qi’an MENG, Lin JIANG, Yongzhuo WANG, Xuefeng BAI, Qiang ZHENG

“…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. …”
Get full text

Study on the Mineralogical and Optical Characteristics of Blue Opal from Lishui Investigated by XRF-SEM-XRD-FTIR by YAN Jun, HU Xian-chao, FANG Biao, TAO Jin-bo, PENG Qiu-jin, ZHANG Jian

“…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. …”
Get full text

The rise of feathered dinosaurs: Kulindadromeus zabaikalicus, the oldest dinosaur with ‘feather-like’ structures by Aude Cincotta, Ekaterina B. Pestchevitskaya, Sofia M. Sinitsa, Valentina S. Markevich, Vinciane Debaille, Svetlana A. Reshetova, Irina M. Mashchuk, Andrei O. Frolov, Axel Gerdes, Johan Yans, Pascal Godefroit

“…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. …”
Get full text

Geological Constraints on the Genesis of Jagpura Au-Cu Deposit NW India: Implications from Magnetite-Apatite Mineral Chemistry, Fluid Inclusion and Sulfur Isotope Study by Abhishek Anand, Sahendra Singh, Arindam Gantait, Amit Srivastava, Girish Kumar Mayachar, Manoj Kumar

“…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. …”
Get full text

Shore platform and cliff notch transitions along the La Paz Peninsula, southern Baja, Mexico by A.S. TRENHAILE, N.I. PORTER, K. PRESTANSKI

“…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. …”
Get full text

Crustal Mercury Addition Into the Giant Jinchuan Ni‐Cu Sulfide Deposit, China, and Its Geological Implications by Lingjian Gao, Ting‐Mao Long, Deyou Sun, Changzhou Deng, Zhendong Tian, Xie‐Yan Song, Runsheng Yin

“…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. …”
Get full text

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... by Yuman Wang, Dazhong Dong, Xiangzhi Cheng, Jinliang Huang, Shufang Wang, Shiqian Wang

“…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.…”
Get full text

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... by Lizaveta Vintsek, Ewelina Klichowska, Arkadiusz Nowak, Marcin Nobis

“…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. …”
Get full text

Automatic measurement of three-phase contact angles in pore throats based on digital images by Chuanzhen ZANG, Lida WANG, Kaihu ZHOU, Fuwei YU, Hanqiao JIANG, Junjian LI

“…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. …”
Get full text

The improvement of sparsity gravity inversion using an adaptive lanczos bidiagonalization method by Meng Zhaohai, Meng Zhaohai, Meng Zhaohai, Wang Yanfei, Wang Yanfei, Li Jinhui, Li Fengting, Zhang Zishan

“…The detection of sharp boundaries between anomalous bodies and host rocks is an interesting point in the geological frameworks. …”
Get full text

Application of Geo-informatics for Survey the Ephiphytic Plants in Tad Sung Waterfall Forest Park, Kalasin Province by Narueset Prasertsri, Satith Sangpradid, Nutchanat Buasri, Theeraya Utta, Damrongsak Chusrithong, Thinnakon Angkahad

“…Because due to born on low places such as on the trees and rocks. The surrounding area is deciduous and mixed-deciduous forests. …”
Get full text

Chemical Modification of Lherzolite Xenoliths Due to Interaction with Host Basanite Melt: Evidence from Tumusun Volcano, Baikal Rift Zone by Marina A. Gornova, Vasiliy A. Belyaev, Anas A. Karimov, Alexander B. Perepelov, Sergei I. Dril

“…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). …”
Get full text

Microbially induced calcium carbonate precipitation in fossil consolidation treatments: Preliminary results inducing exogenous Myxococcus xanthus bacteria in a miocene Cheirogaster... by Silvia Marín-Ortega, M. Àngels Calvo i Torras, Manuel Ángel Iglesias-Campos

“…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). …”
Get full text

Evaluation of Karst Spring Discharge Response Using Time-Scale-Based Methods for a Mediterranean Basin of Northern Algeria by Bilel Zerouali, Mohamed Chettih, Mamdooh Alwetaishi, Zaki Abda, Ahmed Elbeltagi, Celso Augusto Guimarães Santos, Enas E. Hussein

“…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.…”
Get full text

Diversity and Carbon Sequestration of Seaweed in the Ma’an Archipelago, China by Xunmeng Li, Xu Zhao, Huarong Yuan, Yu Guo, Jun Li, Shouyu Zhang, Jianqu Chen, Zhenhua Wang, Kai Wang

“…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. …”
Get full text

Multiscale modeling of reservoir systems using geostatistical methods by Chihi, Hayet, Hammami, Mohamed Amin, Mezni, Imen, Belayouni, Habib, Ben Mammou, Abdallah

“…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. …”
Get full text

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... by Christian Marignac, Michel Cuney, Michel Cathelineau, Andreï Lecomte, Eleonora Carocci, Filipe Pinto

“…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.…”
Get full text