The Gas Hure Salt Lake(GHSL) in the northwestern Qaidam Basin, western China, is rich in boron(B) resources, but its B-resource origin is hardly known. Hydrochemical compositions and B isotope characteristics of diffe...The Gas Hure Salt Lake(GHSL) in the northwestern Qaidam Basin, western China, is rich in boron(B) resources, but its B-resource origin is hardly known. Hydrochemical compositions and B isotope characteristics of different waters were collected around the GHSL, including the river water, stream water, spring water, salt-lake brine, intercrystalline brine, well water, drilling brine, and solar pond brine. The hydrochemical signatures suggest that silicates, carbonates and evaporates are the main B-bearing rocks during the water dynamic. The reservoir estimation of B resources shows that the Kulamulekesay River(KLMR) and the Atekan River(ATKR) contribute annually 18.3 tons and 22.84 tons of B, respectively, with a total amount of 11.72 × 10^(4) tons of B during the past 5.7 ka. In comparison with the known B reservoir(32.96 × 10^(4) tons) in the GHSL, a significant amount of B in the GHSL was probably recharged from deep fluids and sediments around the GHSL. The B concentration and B-enrichment degree are shaped by the evaporation process, which are highly elevated at the carnallite and bischofite stages.展开更多
According to the study on the peripheral orogenic belts of the Junggar basin and combined with the interpretation of geophysical data, this paper points out that there is an Early Paleozoic basement of immature contin...According to the study on the peripheral orogenic belts of the Junggar basin and combined with the interpretation of geophysical data, this paper points out that there is an Early Paleozoic basement of immature continental crust in the Junggar area, which is mainly composed of Neoproterozoic-Ordovician oceanic crust and weakly metamorphosed covering sedimentary rocks. The Late Paleozoic tectonism and mineralization were developed on the basement of the Early Paleozoic immature continental crust. The Junggar metallogenic province is dominated by Cr, Cu, Ni and Au mineralization. Those large and medium-scale deposits are mainly distributed along the deep faults and particularly near the ophiolitic melange zones, and formed in the Late Paleozoic with the peak of mineralization occurring in the Carboniferous-Permian post-collisional stage. The intrusions related to Cu, Ni and Au mineralization generally have low Is, and positive εNd(t) values. The δ34S values of the ore deposits are mostly near zero, and the lead isotopes are mostly of normal lead. All these indicate that the ore-forming material comes either directly from the mantle-derived magma (for chromite and Cu-Ni deposits) or from recirculation of the basement material of the Early Paleozoic immature crust (for most Cu and Au deposits).展开更多
Xinjiang Institute of Ecology and Geography（XJEG）,Chinese Academy of Science（CAS）,established three new research departments in 2011.They are Department of Geology Mineralization and Mineral Resources,Department o...Xinjiang Institute of Ecology and Geography（XJEG）,Chinese Academy of Science（CAS）,established three new research departments in 2011.They are Department of Geology Mineralization and Mineral Resources,Department of Environmental Pollution and Process Control, and Department of Central Asian Cooperation and Coordinated Development, respectively. Now, there are a total of eight research departments in XJEG, CAS.展开更多
Due to the increased demand for soft knitting yarn, Rieter customer Xinjiang Kangruixin Textile Co. Ltd. wants to increase production. At the same time, the Aksu-based company from the Xinjiang province, China, also f...Due to the increased demand for soft knitting yarn, Rieter customer Xinjiang Kangruixin Textile Co. Ltd. wants to increase production. At the same time, the Aksu-based company from the Xinjiang province, China, also faced pressures to save energy and personnel costs.展开更多
Zircon dating,geochemical and Nd-Sr isotopic analyses have been determined for samples from two granitic intrusions in the Talate mining district,Chinese Altay.Our data suggest that these intrusions were emplaced from...Zircon dating,geochemical and Nd-Sr isotopic analyses have been determined for samples from two granitic intrusions in the Talate mining district,Chinese Altay.Our data suggest that these intrusions were emplaced from 462.5 Ma to 457.8 Ma.These rocks have strong affinity to peralumious S-type granite and are characterized by prominent negative Eu anomalies(δEu=0.20–0.35),strong depletion in Ba,Sr,P,Ti,Nb,Ta and positive anomalies in Rb,Th,U,K,La,Nd,Zr,Hf.Nd-Sr isotopic compositions of the whole rock show negativeεNd(t)values(-1.21 to-0.08)and Mesoproterozoic Nd model ages(T2 DM=1.20–1.30 Ga).Their precursor magmas were likely derived from the partial dehydration melting of Mesoproterozoic mica-rich pelitic sources and mixed with minor mantle-derived components,under relatively low P(≤1 kbar)and high T(746–796℃)conditions.A ridge subduction model may account for the early Paleozoic geodynamic process with mantle-derived magmas caused by Ordovician ridge subduction and the opening of a slab window underplated and/or intraplated in the middle–upper crust,which triggered extensive partial melting of the shallow crust to generate diverse igneous rocks,and provided the heat for the crustal melting and juvenile materials for crustal growth.展开更多
May 19 is China Tourism Day 2022,Networks of International Cultural Entities co-sponsored China Tourism Day 2022:Highlights of Chinese Culture and Tourism with the Department of Culture and Tourism of Shandong Provinc...May 19 is China Tourism Day 2022,Networks of International Cultural Entities co-sponsored China Tourism Day 2022:Highlights of Chinese Culture and Tourism with the Department of Culture and Tourism of Shandong Province,Sichuan Province and Xinjiang Uygur Autonomous Region as well as the People's Government of Longquan City,Zhejiang Province.展开更多
1. On Chinese-foreign joint (co-operative) ventures(1) The conclusion of the letter ofintent on joint investment (co-operation) bythe Chinese and foreign parties.(2) New construction projects shall besubmitted to the ...1. On Chinese-foreign joint (co-operative) ventures(1) The conclusion of the letter ofintent on joint investment (co-operation) bythe Chinese and foreign parties.(2) New construction projects shall besubmitted to the provincial PlanningCommission for ratification; technicalinnovation projects shall be submitted to theProvincial Economic Commission forratification.(3) The contracting parties shall register thename of the joint venture with the provincialAdministration for Industry and Commerce.展开更多
基金Financial support for this research was provided by the “Western Light” Fund of the Chinese Academy of Science Foundation (Y910061016)The National Natural Science Foundation of China (No. 42007169)+3 种基金The Key deployment projects of the Chinese academy of sciences (ZDRW-ZS-2020-3)Funds for the Natural Science Foundation of Qinghai Province (No. 2020-ZJ-932Q2020-ZJ-7322019-ZJ-7028)。
文摘The Gas Hure Salt Lake(GHSL) in the northwestern Qaidam Basin, western China, is rich in boron(B) resources, but its B-resource origin is hardly known. Hydrochemical compositions and B isotope characteristics of different waters were collected around the GHSL, including the river water, stream water, spring water, salt-lake brine, intercrystalline brine, well water, drilling brine, and solar pond brine. The hydrochemical signatures suggest that silicates, carbonates and evaporates are the main B-bearing rocks during the water dynamic. The reservoir estimation of B resources shows that the Kulamulekesay River(KLMR) and the Atekan River(ATKR) contribute annually 18.3 tons and 22.84 tons of B, respectively, with a total amount of 11.72 × 10^(4) tons of B during the past 5.7 ka. In comparison with the known B reservoir(32.96 × 10^(4) tons) in the GHSL, a significant amount of B in the GHSL was probably recharged from deep fluids and sediments around the GHSL. The B concentration and B-enrichment degree are shaped by the evaporation process, which are highly elevated at the carnallite and bischofite stages.
基金the Major State Basic Research Programs of the People’s Republic of China(No.2001CB409806).
文摘According to the study on the peripheral orogenic belts of the Junggar basin and combined with the interpretation of geophysical data, this paper points out that there is an Early Paleozoic basement of immature continental crust in the Junggar area, which is mainly composed of Neoproterozoic-Ordovician oceanic crust and weakly metamorphosed covering sedimentary rocks. The Late Paleozoic tectonism and mineralization were developed on the basement of the Early Paleozoic immature continental crust. The Junggar metallogenic province is dominated by Cr, Cu, Ni and Au mineralization. Those large and medium-scale deposits are mainly distributed along the deep faults and particularly near the ophiolitic melange zones, and formed in the Late Paleozoic with the peak of mineralization occurring in the Carboniferous-Permian post-collisional stage. The intrusions related to Cu, Ni and Au mineralization generally have low Is, and positive εNd(t) values. The δ34S values of the ore deposits are mostly near zero, and the lead isotopes are mostly of normal lead. All these indicate that the ore-forming material comes either directly from the mantle-derived magma (for chromite and Cu-Ni deposits) or from recirculation of the basement material of the Early Paleozoic immature crust (for most Cu and Au deposits).
文摘Xinjiang Institute of Ecology and Geography（XJEG）,Chinese Academy of Science（CAS）,established three new research departments in 2011.They are Department of Geology Mineralization and Mineral Resources,Department of Environmental Pollution and Process Control, and Department of Central Asian Cooperation and Coordinated Development, respectively. Now, there are a total of eight research departments in XJEG, CAS.
文摘Due to the increased demand for soft knitting yarn, Rieter customer Xinjiang Kangruixin Textile Co. Ltd. wants to increase production. At the same time, the Aksu-based company from the Xinjiang province, China, also faced pressures to save energy and personnel costs.
基金financially supported the National Key S&T Support Program of China (2006BAB07B02-01, 02)the Fundamental Research Funds for Scientific Institution (JYYWF20180104)Geological investigation (DD20190398)
文摘Zircon dating,geochemical and Nd-Sr isotopic analyses have been determined for samples from two granitic intrusions in the Talate mining district,Chinese Altay.Our data suggest that these intrusions were emplaced from 462.5 Ma to 457.8 Ma.These rocks have strong affinity to peralumious S-type granite and are characterized by prominent negative Eu anomalies(δEu=0.20–0.35),strong depletion in Ba,Sr,P,Ti,Nb,Ta and positive anomalies in Rb,Th,U,K,La,Nd,Zr,Hf.Nd-Sr isotopic compositions of the whole rock show negativeεNd(t)values(-1.21 to-0.08)and Mesoproterozoic Nd model ages(T2 DM=1.20–1.30 Ga).Their precursor magmas were likely derived from the partial dehydration melting of Mesoproterozoic mica-rich pelitic sources and mixed with minor mantle-derived components,under relatively low P(≤1 kbar)and high T(746–796℃)conditions.A ridge subduction model may account for the early Paleozoic geodynamic process with mantle-derived magmas caused by Ordovician ridge subduction and the opening of a slab window underplated and/or intraplated in the middle–upper crust,which triggered extensive partial melting of the shallow crust to generate diverse igneous rocks,and provided the heat for the crustal melting and juvenile materials for crustal growth.
文摘May 19 is China Tourism Day 2022,Networks of International Cultural Entities co-sponsored China Tourism Day 2022:Highlights of Chinese Culture and Tourism with the Department of Culture and Tourism of Shandong Province,Sichuan Province and Xinjiang Uygur Autonomous Region as well as the People's Government of Longquan City,Zhejiang Province.
文摘1. On Chinese-foreign joint (co-operative) ventures(1) The conclusion of the letter ofintent on joint investment (co-operation) bythe Chinese and foreign parties.(2) New construction projects shall besubmitted to the provincial PlanningCommission for ratification; technicalinnovation projects shall be submitted to theProvincial Economic Commission forratification.(3) The contracting parties shall register thename of the joint venture with the provincialAdministration for Industry and Commerce.
