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Petrogenesis of late Mesozoic diabase dikes in Zhejiang-Fujian provinces Constraints from Ar-Ar dating and geochemistry. Acta Petrologica Sinica 26(11) . 10.
Chat Online· P. J. Li H. Y. Li 1034 Figure 1. Age distribution of the Yanshanian (20080 Ma) plutons in SE China (The details are shown in 87 ). complexes and basic dike
Chat OnlineGeology Geochemistry and genesis of the Longhua low-temperature hydrothermal Ni-Co arsenide deposit in sedimentary rocks Guangxi South China. ORE GEOLOGY REVIEWS 2020 120. DOI 10.1016/j.oregeorev.2020.103393
Chat OnlineThe intrusive rocks of the Dahua green nephrite deposit in Guangxi are diabase and gabbro from the Variscan orogeny and the surrounding rocks are mainly fine-grained gray-black dolomitic limestone (Li et al. 2011). In nephrite surrounded by dolomitic limestone
Chat Online· Fangge Chen Qingfei Wang Shujuan Yang Qizuan Zhang Xuefei Liu Jiahao Chen Emmanuel John M. Carranza Space-time distribution of manganese ore deposits along the southern margin of the South China Block in the context of Palaeo-Tethyan evolution International Geology
Chat OnlineGeology Geochemistry and genesis of the Longhua low-temperature hydrothermal Ni-Co arsenide deposit in sedimentary rocks Guangxi South China. ORE GEOLOGY REVIEWS 2020 120. DOI 10.1016/j.oregeorev.2020.103393
Chat Onlineentrance to imported crude oil the distribution of crude oil is very fast and convenient. Location of Japan s Large Oil Seal Caverns Japan has three underground reserve bases 2 respectively Kuzi Kikuma and Kushikino. Kuzi and Kikuma base is located in the foundation rock stratum of granite during the cretaceous period. The
Chat Online· (C) Distribution of diabase dikes in the dam site As counted in Figure 2 the number of diabase dikes with thickness >5 m is 41 and that with thickness larger than 2 m is 77. Geological survey results indicate that diabase dikes with a south-north trending are most developed accounting for
Chat Online· According to the temporal-spatial distribution of Neoproterozoic igneous rocks and relative rocks in South China including ophiolites arc volcanic and intrusive rocks and subsequent bimodal magmatism we identified the presence of a Neoproterozoic intra-oceanic arc
Chat Online· Dagangshan hydropower station is located in the middle of Dadu River Southwest China. Many diabase dikes were exposed in the adamellite granite body during excavation of the underground caverns. The dikes are highly directional have crushed interiors exhibit strong alteration and have poor contact relationships with surrounding rocks all of which is inconsistent with the characteristics
Chat Online· Fangge Chen Qingfei Wang Shujuan Yang Qizuan Zhang Xuefei Liu Jiahao Chen Emmanuel John M. Carranza Space-time distribution of manganese ore deposits along the southern margin of the South China Block in the context of Palaeo-Tethyan evolution International Geology Review 60 1 (May 2017) 72–86.
Chat Online· Geochemical Distribution of Inorganic Carbon in Surface Soil of Hebei Plain China SONG Zefeng CUI Xingtao LUAN Wenlou 104 The Study of Geochemistry and Tectonic Environment of Monzogranite in Huangtuliang Area Northwest Hebei LIU Xiaoyu LI Ziye 109
Chat OnlineComments. Mined out ( ) Wall-rocks are mostly sheared. Average gold content in pyrite 257.6 g/t (Mao 1991). Gold fineness 900‰ (Liu and Geng 1985).
Chat Online· Geological maps are commonly used to investigate the distribution of geological natural resources such as minerals. However the existing 1 200 000 geological map created in the 1990s for Guangxi China cannot support efficient investigation and interpretation of the geological surface changes.
Chat Online· Compositionally and texturally zoned diabase dykes and sills occur in the outer zone of the Emeishan large igneous province (ELIP) in the southern Guizhou Province Southwest China. Based on the detailed petrology whole rock geochemistry zircon U-Pb geochronology and Hf isotopes and clinopyroxene mineral compositions studies we investigate a representative diabase sill in the
Chat Online· The relationship between mafic intrusion and gold deposits has always received substantial attention. Based on the petrography mineralogy and chronology of two mafic intrusion suites exposed in the Funing area we found that the mafic intrusion suites have closely relationship with gold mineralization. The 255±4.9-Ma U-Pb age of the early mafic intrusion suite is much older than the
Chat Online· 1. Introduction. The Youjiang Basin is a late Palaeozoic–Mesozoic composite rift basin on the southwestern margin of the Yangtze Block. Since the late Palaeozoic this block experienced a multiphase geodynamic evolution along with the opening and spreading of the Palaeo-Tethys Ocean (Zhang et al. 2016) particular this region transformed from a rift basin to a passive continental
Chat OnlineCorrelation of Paleozoic and older rock units in the Qinling-Tongbai-Hong an-Dabie orogen distribution of plutons trend of mostly Triassic fold trains and faults and distribution of Precambrian U/Th–Pb ages detailed in Table S1 (with references). Our new data are given with leading sample number data with " " denote major detrital age clusters and "i" indicates that the age is
Chat OnlineA suite of mafic intrusions composed of diabase and micro-gabbro outcrops in the Jingxi area of southern Youjiang Basin SW China. This study conducts geochronological geochemical and Sr ndashNd isotopic analyses on the mafic intrusions in Jingxi with the aim of determining their petrogenesis tectonic setting and metallogenic implications. Zircon U ndashPb dating for the mafic
Chat Online· distribution of economic minerals in this area (Figure 1). The regional economic minerals are mainly gold minerals with more than 10 gold mineral-producing areas mostly distributed in the exposed parts of the gabbro and diabase. The distribution of gold deposits and ore outcrops in the area is
Chat Online· The Longsheng mafic-ultramafic suite consists of more than 100 mafic and ultramafic intrusions and are extensively distributed within the Neoproterozoic Danzhou Group along the Jiangnan Orogenic Belt in northern Guangxi China. The suite has been a hotly debated subject in the context of emplacement age source of magmas and tectonic setting for several decades. In this article we
Chat Online· QY-2 is a diabase sampled from the Qianyang area. Fourteen spot analyses were performed on 14 zircon grains of the sample. The measured U and Th concentrations of these zircon grains range from 623 ppm to 1542 ppm and 2101 ppm to 2941 ppm respectively.
Chat Online· The fact that the late-stage Badu diabase yields a wide range of oxygen fugacity values that are all higher than typical Hawaiian basalts but lower than the early-stage Badu diabase and basalts within the basement suggests that the 250 Ma Badu diabase or basement rocks were assimilated by and thus contributed to the variations in the oxygen
Chat Online· 1. Introduction. The Youjiang Basin is a late Palaeozoic–Mesozoic composite rift basin on the southwestern margin of the Yangtze Block. Since the late Palaeozoic this block experienced a multiphase geodynamic evolution along with the opening and spreading of the Palaeo-Tethys Ocean (Zhang et al. 2016) particular this region transformed from a rift basin to a passive continental
Chat Online· Dagangshan hydropower station is located in the middle of Dadu River Southwest China. Many diabase dikes were exposed in the adamellite granite body during excavation of the underground caverns. The dikes are highly directional have crushed interiors exhibit strong alteration and have poor contact relationships with surrounding rocks all of which is inconsistent with the characteristics
Chat Online· The fact that the late-stage Badu diabase yields a wide range of oxygen fugacity values that are all higher than typical Hawaiian basalts but lower than the early-stage Badu diabase and basalts within the basement suggests that the 250 Ma Badu diabase or basement rocks were assimilated by and thus contributed to the variations in the oxygen
Chat Online· Geological maps are commonly used to investigate the distribution of geological natural resources such as minerals. However the existing 1 200 000 geological map created in the 1990s for Guangxi China cannot support efficient investigation and interpretation of
Chat OnlineComments. Mined out ( ) Wall-rocks are mostly sheared. Average gold content in pyrite 257.6 g/t (Mao 1991). Gold fineness 900‰ (Liu and Geng 1985).
Chat OnlineDagangshan hydropower station is located in the middle of Dadu River Southwest China. Many diabase dikes were exposed in the adamellite granite body during excavation of the underground caverns. The dikes are highly directional have crushed
Chat Online· Fangge Chen Qingfei Wang Shujuan Yang Qizuan Zhang Xuefei Liu Jiahao Chen Emmanuel John M. Carranza Space-time distribution of manganese ore deposits along the southern margin of the South China Block in the context of Palaeo-Tethyan evolution International Geology Review 60 1 (May 2017) 72–86.
Chat Onlineentrance to imported crude oil the distribution of crude oil is very fast and convenient. Location of Japan s Large Oil Seal Caverns Japan has three underground reserve bases 2 respectively Kuzi Kikuma and Kushikino. Kuzi and Kikuma base is located in the foundation rock stratum of granite during the cretaceous period. The
Chat OnlineThe Sanqiliu uranium deposit belongs to a uranium ore system in Motianling district. It is the oldest uranium deposit in South China. Primary uranium mineralization occurred almost simultaneously with the emplacement of the host granites and subsequent dykes and it has a relatively high grade of uranium (0.421 ). We clarify the age of mineralization and investigate the cooling history through
Chat Online· for the earliest time in China is an impo rtant component of the Yunnan-Guizhou-Guangxi gold triangle province. Carlin-type gold deposits in SW Guizhou China are hosted in late Paleozoic and early Mesozoic sedimentary rocks along the southwest margin of the Precambrian Yangtze craton.
Chat Online· for the earliest time in China is an impo rtant component of the Yunnan-Guizhou-Guangxi gold triangle province. Carlin-type gold deposits in SW Guizhou China are hosted in late Paleozoic and early Mesozoic sedimentary rocks along the southwest margin of the Precambrian Yangtze craton.
Chat Online· According to the temporal-spatial distribution of Neoproterozoic igneous rocks and relative rocks in South China including ophiolites arc volcanic and intrusive rocks and subsequent bimodal magmatism we identified the presence of a Neoproterozoic intra-oceanic arc
Chat Online· Compositionally and texturally zoned diabase dykes and sills occur in the outer zone of the Emeishan large igneous province (ELIP) in the southern Guizhou Province Southwest China. Based on the detailed petrology whole rock geochemistry zircon U-Pb geochronology and Hf isotopes and clinopyroxene mineral compositions studies we investigate a representative diabase sill in the
Chat OnlineA suite of mafic intrusions composed of diabase and micro-gabbro outcrops in the Jingxi area of southern Youjiang Basin SW China. This study conducts geochronological geochemical and Sr–Nd
Chat Online· The control of preexisting faults on the distribution morphology and volume of monogenetic volcanism in the Michoacán-Guanajuato Volcanic Field The Cretaceous igneous rocks in southeastern Guangxi and their implication for tectonic environment in southwestern South China Block. Origin of the diabase dykes from the Baolun gold deposit
Chat OnlineGRGST (Guangxi Regional Geological Survey Team) (1981) Mao J. W. and Du A. D. (2001) Re-Os isotopic age of Cu-Ni Regional Geological Survey Report (Sanmen area 1 50000) sulphide ore in Baotan area of northern Guangxi and its (in Chinese).
Chat Online· Zircons from the Mandong diabase yield a weighted mean 206 Pb/ 238 U age of 131 ± 2 Ma (MSWD = 1.5 n = 9) those from the Wende diabase show a weighted mean 206 Pb/ 238 U
Chat Online· Through statistical analysis of the buffer zone mineralization between the gabbro and the fracture at different distances the optimal buffer zone of the diabase is 50 m and the optimal buffer zone of the fracture is 100 m. The spatial distribution is shown in Fig. 4d. (3) There is favorable "storage" information for mineralization.
Chat OnlineHenceforth Bama county became the one with the highest distribution rate of centenarian among the five world longevity towns. Meanwhile the population of centenarian in Bama is more than four times as international standards for the world longevity town. There is a junction between Karst lava and diabase where deep spring water at the
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