Objective Typical Early Cretaceous non-marine bivalve fossils from Eastern Asia are represented by the Arguniella-Sphaerium assemblage,and they were important members of the Jehol Biota.Historically,the genus Arguniel...Objective Typical Early Cretaceous non-marine bivalve fossils from Eastern Asia are represented by the Arguniella-Sphaerium assemblage,and they were important members of the Jehol Biota.Historically,the genus Arguniella in western Liaoning had been mistakenly identified as the Jurassic Ferganoconcha,re-identified as Arguniella with。展开更多
The survey of fluorite ore resources in Shangkuli area is based on years of data collection and research in the survey area and mineral inspection to select some favorable ore-forming sections. It summarizes the metal...The survey of fluorite ore resources in Shangkuli area is based on years of data collection and research in the survey area and mineral inspection to select some favorable ore-forming sections. It summarizes the metallogenic geological background, strata, magmatic rocks, structures and other metallogenic geological conditions in the survey area. It synthesizes the geological, geophysical, geochemical and remote sensing anomalies and the temporal and spatial distribution laws of minerals in the survey area, systematically summarizes the mineralization laws of the ore-controlling factors of fluorite ore in the survey area, conducts the prediction research on typical deposits and regional minerals, divides the prospecting areas and selects 2 prospecting target areas. Through anomaly verification and ore spot inspection, one new mineral spot, six ore spots and eight mineralized spots have been discovered, and a number of geochemical anomalies of 1: 50,000 have been circled, and the resources have been predicted and estimated respectively.展开更多
Oil-gas reservoir space types involving spherulite in pyromeride rocks are common in the Lower Cretaceous Shangkuli Formation, the Hailar Basin, China. The main types include interspherulite fissures, interlayer fissu...Oil-gas reservoir space types involving spherulite in pyromeride rocks are common in the Lower Cretaceous Shangkuli Formation, the Hailar Basin, China. The main types include interspherulite fissures, interlayer fissures, intraspherulite concentric rings and net microcracks, cavity pores, dissolution pores, and devitrification pores. The first two were found to restrict the effective plane porosity of interspherulite. Devitrification microporosities, microcracks, cavity pores, and spherulite diameter influence the effective plane porosity of intraspherulite. The degree of dissolution is determined by the degree of development and the type of intraspherulite microcracks. Another important role of ring and net microcracks is to connect devitrification pores to form a pore and fissure network. Finally, chilling contraction plays an important role in the form and development of interspherulite fissures, microcracks, and cavity pores. The diameter of spherulite restricts chilling contraction, especially when the diameter is between the common spherulites and lithophysae, thus benefiting microcrack and cavity pore formation. To summarize, devitrification microporosities represent excellent oil reservoir space, while offering micro-channels for the movement of formation water and organic fluids. However, the inclusion of microcracks improves this capacity.展开更多
基金funded by the National Science Foundation of China(41688103)Chinese National Mineral Rock and Fossil Specimens Resource Center(2020)ProgramSelf-determined Foundation of Key Laboratory of Mineral Resources Evaluation in Northeast Asia,Ministry of Natural Resources of China(Grant No:DBY-ZZ-19-18)。
文摘Objective Typical Early Cretaceous non-marine bivalve fossils from Eastern Asia are represented by the Arguniella-Sphaerium assemblage,and they were important members of the Jehol Biota.Historically,the genus Arguniella in western Liaoning had been mistakenly identified as the Jurassic Ferganoconcha,re-identified as Arguniella with。
文摘The survey of fluorite ore resources in Shangkuli area is based on years of data collection and research in the survey area and mineral inspection to select some favorable ore-forming sections. It summarizes the metallogenic geological background, strata, magmatic rocks, structures and other metallogenic geological conditions in the survey area. It synthesizes the geological, geophysical, geochemical and remote sensing anomalies and the temporal and spatial distribution laws of minerals in the survey area, systematically summarizes the mineralization laws of the ore-controlling factors of fluorite ore in the survey area, conducts the prediction research on typical deposits and regional minerals, divides the prospecting areas and selects 2 prospecting target areas. Through anomaly verification and ore spot inspection, one new mineral spot, six ore spots and eight mineralized spots have been discovered, and a number of geochemical anomalies of 1: 50,000 have been circled, and the resources have been predicted and estimated respectively.
基金supported by National Basic Research Program of China (Grant No. 2009CB219305)
文摘Oil-gas reservoir space types involving spherulite in pyromeride rocks are common in the Lower Cretaceous Shangkuli Formation, the Hailar Basin, China. The main types include interspherulite fissures, interlayer fissures, intraspherulite concentric rings and net microcracks, cavity pores, dissolution pores, and devitrification pores. The first two were found to restrict the effective plane porosity of interspherulite. Devitrification microporosities, microcracks, cavity pores, and spherulite diameter influence the effective plane porosity of intraspherulite. The degree of dissolution is determined by the degree of development and the type of intraspherulite microcracks. Another important role of ring and net microcracks is to connect devitrification pores to form a pore and fissure network. Finally, chilling contraction plays an important role in the form and development of interspherulite fissures, microcracks, and cavity pores. The diameter of spherulite restricts chilling contraction, especially when the diameter is between the common spherulites and lithophysae, thus benefiting microcrack and cavity pore formation. To summarize, devitrification microporosities represent excellent oil reservoir space, while offering micro-channels for the movement of formation water and organic fluids. However, the inclusion of microcracks improves this capacity.
