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中国新疆
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     The Northwest·the Xinjiang Uygur Autonomous Region: Half Project of Chinese International Road Transport
     大西北·新疆:中国国际道运半壁江山
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     Xinjiang is located in northwestern China, where mineral resources are rich.
     新疆地处中国西北部 ,矿产丰富。
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     PALEOEARTHQUAKEACTIVITYINTADZHIKISTAN ANDXINJIANG, CHINA
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     Floristic novelties in the Umbelliferae of Xinjiang, China
     中国新疆伞形科植物区系新资料(英文)
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It is difficult to determine the initial Sr isotopic composition exactly by the whole rock Rb-Sr isochron method, especially for altered and weathered basic rocks and pegmatites, baeause basic rocks are Rb-poor and Sr-rich, and pegmatites, especially granite-pegmatite, are highly rich in Rb and poor in St, and with coarse and large mineral crystals.The authors have systematically studied the mineralogy and Sr isotopic geochemistry for over two hundred apatites in granites of differeut genetic types over extensive...

It is difficult to determine the initial Sr isotopic composition exactly by the whole rock Rb-Sr isochron method, especially for altered and weathered basic rocks and pegmatites, baeause basic rocks are Rb-poor and Sr-rich, and pegmatites, especially granite-pegmatite, are highly rich in Rb and poor in St, and with coarse and large mineral crystals.The authors have systematically studied the mineralogy and Sr isotopic geochemistry for over two hundred apatites in granites of differeut genetic types over extensive regions in China, which saggests that the Sr isotopic composition of the primary apatites formed in the early stage of crystallization may well show the initial ~(87)Sr/(86)Sr ratio (~(87)Sr/~(86)Sr); values at the time of solidification of relevant granites. Apatite, having very stable crystal chemical structure, is very good for the retention of Rb and Sr and is strong to resist weathering. The apatite content is high in some basic rocks and pegmatites, for example, ia apatite-bearing gabbro and arfvedsonite-diopside-apatite pegmatite it is up to 5%. Therefore, it is an economic, qaick and effective method to study the sr iuotopic composition of apatite from the above-mentioned rocks in order to probe into their petro-genesis, material source and geochemical process.

利用磷灰石,测定了中国新疆、内蒙、福建、云南西部的伟晶岩,以及四川、云南、江苏、河北等地基性侵入岩的Srl_((?)p);并根据锶同位素组成特征,结合地质条件提供的限制,划分出:幔源型伟晶岩(SrI_(ap)为0.7026—0.7033);壳源型伟晶岩(SrI_(2p)为0.7110—0.7145),它们各具不同的特征矿化。以及SrI_(ap)〈0.705与SrI_(ap)为0.7080—0.7107两组不同的幔源型墓性岩体。并讨论了磷灰石锶同位素测定方法,在理论和实践运用上的意义.

The gold deposit dealt with in this paper has been proved to be a new type ofgold deposit. It formed within a hot spring system of the ancient oceanic crustwhich was then emplaced onto the continent along with the marine-crustal struc-ture. This deposit consists of the Sartohay and Anqi metallogenic balts, equivalent tothe south subbelt and north subbelt of ophiolite, respectively. In the Sartohay belt,the gold bodies are found in basalts, ultramafic rocks and their altered rocks, andin the Anqi belt, in basalts...

The gold deposit dealt with in this paper has been proved to be a new type ofgold deposit. It formed within a hot spring system of the ancient oceanic crustwhich was then emplaced onto the continent along with the marine-crustal struc-ture. This deposit consists of the Sartohay and Anqi metallogenic balts, equivalent tothe south subbelt and north subbelt of ophiolite, respectively. In the Sartohay belt,the gold bodies are found in basalts, ultramafic rocks and their altered rocks, andin the Anqi belt, in basalts and pyroclastic-sedimentary rocks. The two belts aredifferent in mineral composition. Pyrite in the Sartohay bult is rich in Co and Nibut poor in As, while the reverse is the case with that in the Anqi belt. The min-eral characteristics and inclusion thermometry seggest that both ore-forming tem-perature and pressure in the Sartohay metallogenetic belt are higher than those inthe Anqi Inetallogenic belt. The sulfur isotopic composition in the deposit indicates that the sulfur camefrom the upper mantle. The hydrogen and oxygen isotopic compositions suggest thatthe ore-forming hydrothermal fluid was a metamorphic hydrothermal mixture ofmagmatic water and sea water, equivalent to that of ophiolite. The Pb isotopic ageof the ores was dated at 290-320Ma, implying that the deposit was formed almostsimultaneously witb the ophiolite. The evidence shows that the formation of the Toligold deposit was related to the convection of submarine hydrothermal solution andas well a product of the submarine hot spring activities.

中国新疆西准噶尔托里县境内的安齐-萨尔托海一带的金矿床,产在达拉布特蛇绿岩带的蛇绿岩套中。根据金矿床的地质背景、地球化学特点和成矿温度等,作者将其成因与古洋壳的热泉活动联系起来,认为产于蛇绿岩?不同部位的金矿床和矿化系同一成因,并建议命名为蛇绿岩型金矿,

The Kelamaili Region is located in the southern part of the Kelamaili deep fracture of the eastern Junggar region in Xinjiang, analogous to the western part of the Tuvaella biographical province. Based on lithologics and biotic association character, the Silurian strata in the region can be divided into Middle and Upper Series as follows: the Middle Silurian -Baishanbao Formation, the lower part of the Upper Silurian-Hongliugou Fm., the upper part of the Upper Silurian-kushuiquan Fm.

根据岩性和生物组合特征,该区的志留纪地层划分为:中志留统白山包组,上志留统下部红柳沟组,上部苦水泉组.白山包组为粉砂岩和细砂岩,夹钙质砂岩和少量砾岩,钙质砂岩中含腕足类化石:Tuvaella rackovskii,T.gigangea, Stegerhynchus angaciensis,Tannusp-irifer,Spiriferina,Zygospiraella,Resserella obicularia,Leptostrophia elegestica等,以及三叶虫:Encrinurus.红柳沟组为钙质细砂岩、泥质灰岩、生物碎屑灰岩,灰岩中化石十分丰富,含床板珊瑚:Favosites cf.[zhifangensis,Mesofavosites shang-siensis,Hil aepora,Pseudoplasmopora;四射珊瑚:Amsdenoides,Laccophyllumetc.:三叶虫:Encrinurus,Phacops:头足类:Geisonoceras,Michelinoceras等.与白山包组整合接触.苦水泉组整合在红柳沟组之上,为中厚层状凝灰质粉砂岩、细砂岩、沉凝灰岩,夹少量钙...

根据岩性和生物组合特征,该区的志留纪地层划分为:中志留统白山包组,上志留统下部红柳沟组,上部苦水泉组.白山包组为粉砂岩和细砂岩,夹钙质砂岩和少量砾岩,钙质砂岩中含腕足类化石:Tuvaella rackovskii,T.gigangea, Stegerhynchus angaciensis,Tannusp-irifer,Spiriferina,Zygospiraella,Resserella obicularia,Leptostrophia elegestica等,以及三叶虫:Encrinurus.红柳沟组为钙质细砂岩、泥质灰岩、生物碎屑灰岩,灰岩中化石十分丰富,含床板珊瑚:Favosites cf.[zhifangensis,Mesofavosites shang-siensis,Hil aepora,Pseudoplasmopora;四射珊瑚:Amsdenoides,Laccophyllumetc.:三叶虫:Encrinurus,Phacops:头足类:Geisonoceras,Michelinoceras等.与白山包组整合接触.苦水泉组整合在红柳沟组之上,为中厚层状凝灰质粉砂岩、细砂岩、沉凝灰岩,夹少量钙质砂岩和砾岩,在下部发现床板珊瑚(Favosites)、四射珊瑚(Petraia,Hapsiphyllum,Syringa-xon)、三叶虫(Encrinurus)、腹足类及放射虫化石.该区中及上志留统可与中国新疆北部、东北、内蒙、蒙古及苏联等地同期地层进行对比.

 
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