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Magmatic Sulfide Ni-Cu Deposits in China

Journal of Earth Science 1999年第1期18卷 12-16页

作者： tang zhongli gansu bureau of geology and mineral resources, lanzhou 730000

Deep seated magmatic liquation injection deposits form a major type of magmatic sulfide deposit in China. The reserves of nickel and copper in this type of deposit may attain several hundred thousand tons (*** 7 and Karatunggu) to nearly ten million tons (***). Those deposits can be classified as large or superlarge deposits. The ore grade is relatively high, commonly with w (Ni)>1 %. The mineralized intrusions are small in size, generally only 0.0 n km 2 to 0. n km 2, with the largest one not exceeding a few km 2. Before intruding, the primary magmas have undergone liquation and partial crystallization at depth; as a result, the magmas have partitioned into barren magma, ore bearing magma, ore rich magma and ore magma, which then ascended and injected into the present locations once or multiple times, to form ore deposits. The above mentioned mineralizing process is known as deep seated magmatic liquation injection mineralization. The volume of the barren magma is generally much larger than those of the ore bearing magma, ore rich magma and ore magma. In the ascending process, most of the barren magma intruded into different locations or outpoured onto the ground surface, forming intrusions or lava flows. The rest barren magma, ore bearing magma, ore rich magma and ore magma may either multiple times inject into the same place in which rocks and ores are formed or separately inject into different spaces to form rocks and ores. Such deep seated magmatic liquation injection deposits have a much smaller volume, greater ore potential and higher ore grade than those of in situ magmatic liquation deposits. Consequently, this mineralizing process leads to the formation of large deposits in small intrusions.

关键词： deep seated liquation injection spatio temporal distribution magmatic sulfide deposit.

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Types and Metallogenic Models of Nickel Sulfide Deposits of China

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Acta Geologica Sinica(English Edition) 1988年第2期1卷 193-206页

作者： tang zhongli Ren Duanjin bureau of geology and mineral resources of gansu Province, lanzhou, gansu bureau of geology and mineral resources of gansu Province Lanzhou Gansu

Most of the sulfide nickel deposits in China occur on the margins of platforms and their outer mobilebelts. The ore-bearing basic-ultrabasic rock bodies were formed in the Proterozoic and Variscan. The types ofmetallogenic rock bodies include ultrahasic-basic complexes related to volcanism in eugeosynclines andultrabasic rock bodies, ultrabasic-basic complexes and basic rock bodies related to deep fractures. On the basisof ore-forming processes and modes, nickel sulfide deposits of China may be divided into two major types:in-situ magmatic liquid unmixing deposits and deep-seated magmatic liquid unmixing injection deposits. Thelatter may by subdivided into four types: single injection deposits, multiple injection deposits, and pulsatory in-jection depositis, and late injection deposits which may inject into either comagmatic rocks or other kinds ofcountry rocks. Two metallogenic models for nickel sulfide deposits are proposed in this paper.

关键词： Types and Metallogenic Models of Nickel Sulfide Deposits of China

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Main mineralization Mechanism of Magmatic Sulphide Deposits in China

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Acta Geologica Sinica(English Edition) 1997年第1期71卷 49-57页

作者： tang zhongli gansu bureau of geology and mineral Resource, lanzhou, gansu Fei Zhenbi gansu bureau of geology and mineral Resource Lanzhou Gansu [?]tang zhongli Born in Anqing City Anhui Province in 1934 graduated from Beijing College of geology in 1956. Former Chief Engineer of the gansu bureau of geology and Minerai resources Ministry of Geology and Mineral Resources of P.R. China he is now a member of the Academy of Engineering. He is China's famous expert in nickel deposits and has long engaged in the geological surveys and exploration of deposits of copper nickel and other minerals and the study of the petrology of igneous rocks and the geology of mineral deposits.

Before intruding, primary magmas have undergone liquation and partial crystallization atdepth; as a result the magmas are partitioned into barren magma, ore-bearing magma, ore-richmagma and ore magma, which then ascend and are injected into the present locations once ormultiple times, thus forming ore deposits. The above-mentioned mineralizing process is knownas deep-seated magmatic liquation-injection mineralization. The volume of the barren magma isgenerally much larger than those of the ore-bearing magma, ore-rich magma and ore magma. Inthe ascending process, most of the barren magma intrudes into different locations or outpoursonto the ground surface, forming intrusions or lava flows. The rest barren magma, ore-bearingmagma, ore-rich magma and ore magma may either multiple times inject into the same space inwhich rocks and ores are formed or separately inject into different spaces in which rocks and oresare formed. The intrusions containing such deep-seated magmatic liquation-injection depositshave a much smaller volume, greater ore potential and higher ore grade than that of in-situmagmatic liquation deposits. Consequently this mineralizing process results in the formation oflarge deposits in small intrusions.

关键词： deep-seated liquation injection small rock body large mineral deposit

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Pollen records of Holocene vegetation and climate changes in the Longzhong Basin of the Chinese Loess Plateau

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Progress in Natural Science:Materials International 2007年第12期17卷 1445-1456页

作者： tang Lingyu1 and An Chengbang2(1. Nanjing Institute of geology and Paleontology, Chinese Academy of Sciences, Nanjing 210008, China 2. Key Laboratory of Western China’s Environment Systems, MOE, lanzhou University, lanzhou 730000, China) Nanjing Institute of geology and Paleontology Chinese Academy of Sciences Nanjing 210008 China Key Laboratory of Western China's Environment Systems Lanzhou University Lanzhou 730000 China

Pollen records with an average time resolution of 20-200 years from Holocene loess sections at Dingxi, Qin'an, and other localities of gansu Province reveal a detailed history of vegetation and climate changes in the western Loess Plateau. For most time of the Holocene, the landscape was dominated by grasslands or forest steppes. However, during the middle Holocene (7.5-5.8 ka BP), relatively dense forests developed, and the endemic vegetation flourished, suggesting a much warmer and more humid climate condition than the present. Superimposed upon this general pattern are several dry intervals marked by the episodic expansion of grasslands or forest steppe. Xeric vegetation expanded after 3.8 ka BP, indicating a trend towards dry conditions.

关键词： pollen records glasslands coniferous forests Holocene Loess Plateau.

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A high-resolution late Pleistocene record of pollen vegetation and climate change from Jingning, NW China

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Science China Earth Sciences 2006年第2期49卷 154-162页

作者： LI Chunhai12, tang Lingyu1, FENG Zhaodong3,4, ZHANG Hucai2, WANG Weiguo3 & AN Chenbang3 1. Nanjing Institute of geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China 2. Nanjng Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China 3. Environment and resources College, lanzhou University, lanzhou 730000, China 4. Beijing Normal University, Beijing 100875, China Nanjing Institute of geology and Palaeontology Chinese Academy of Sciences Nanjing China Nanjng Institute of Geography and Limnology Chinese Academy of Sciences Nanjing China Environment and resources College Lanzhou University Lanzhou China Beijing Normal University Beijing China

With the support of 18 AMS-14C data, a high-resolution pollen record from the Suancigou section at Jingning, gansu Province was established. Our results showed that the vegetation ex-perienced a series of changes characterized by the alternative growth and decline of forest and steppe components during the period from 44.2 to 11 ka B.P. in the Jingning area. Over the period of 44―29 ka B.P. (MIS3), coniferous forests were flourishing, indicating a humid climate with the tem-perature being lower than that of the present. Since 23 ka B.P., the vegetation was dominated by steppe-desert steppe under a cold and dry condition, and entered the Last Glacial Maximum domi-nated by desert steppe. Several periods of the marked decrease in the arborous pollen content in Suancigou well corresponded to the North Atlantic Heinrich events, especially to Heinrich event 3, further supporting that the Heinrich events were well reflected by the pollen record in the Loess Pla-teau as well.

关键词： Western Loess Plateau, pollen record, climatic change, late Pleistocene.

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Classification of Magmatic Sulphide Deposits in China and mineralization of Small Intrusions

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Acta Geologica Sinica(English Edition) 2006年第3期80卷 412-419页

作者： tang zhongli YAN Haiqing JIAO Jiangang LI Xiaohu Chang＇an University Xi＇an Shaanxi 710054 lanzhou University Lanzhou Gansu 730000

Many important metal resources, such as Ni （Cu, Co）, PGE, exist in magmatic sulfide deposits, are a hot spot in geological research. We divide the magmatic sulphide deposits in China into four types according to their tectonic setting, intruding mode, ore deposit mode, main metallogenic elements. The four types are as follows：（1） Small-intrusion deposits in paleo-continent; （2） Smallintrusion deposits in continental flood basalt; （3） Small-intrusion deposits in orogenic belt; and （4） The deposits associated with ophiolites. On the basis of the classification, we put forward that the main magmatic metallogenic type in China is small-intrusion metallogeny, and describe its characteristics from small intrusions related concept, three geologic settings, three volcanic-intrusive assemblages and metallogenic key factors. According to the experiences of prospecting at home and abroad, we point out that there is big potential in prospecting small-intrusion deposits, which need further study. At last, we indicate that small-intrusion metallogeny not only widely distributes in mafic-ultramafic intrusions, but also has an important economic value and scientific significance in intermediate-acid intrusions.

关键词： magmatic sulfide deposits classification small intrusions metallogenesis

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我国钴资源产业发展现状、问题与对策

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中国工程科学 2024年第3期26卷 98-107页

作者：段俊徐刚汤中立闫海卿刘君泰陈阳阳刘奇长安大学地球科学与资源学院西安710054 甘肃省地质矿产勘查开发局第二地质矿产勘查院兰州730020

钴金属是新能源行业发展所必需的材料。根据钴资源产业最新数据,本文通过分析全球及我国钴资源禀赋、钴精矿与精炼钴供需情况和钴资源产业政策,得出我国钴资源产业发展存在的问题为:我国钴矿资源极其稀缺,但却是全球第一大精炼钴生产国... 详细信息

钴金属是新能源行业发展所必需的材料。根据钴资源产业最新数据,本文通过分析全球及我国钴资源禀赋、钴精矿与精炼钴供需情况和钴资源产业政策,得出我国钴资源产业发展存在的问题为:我国钴矿资源极其稀缺,但却是全球第一大精炼钴生产国和消费国;超高的对外依存度叠加不可替代的单一进口来源,使得我国钴资源保障面临重大隐患。针对上述问题,提出下列钴资源保障对策:加强我国钴矿资源有效增储举措;拓展多元化钴资源进口渠道,确保稳定获取境外钴矿资源;实施扶持性政策,帮扶海外中资企业钴资源平稳产出;建立钴资源储备体系,提高钴资源保障能力;提升钴资源综合利用技术水平,增加可利用钴资源量;重视海底铁锰结核(结壳)等潜在钴资源开采方案研究。

关键词：钴资源钴精矿精炼钴对外依存度钴产业链

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《声声慢》词调与声情

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乐山师范学院学报 2024年第6期39卷 44-49,102页

作者：王忠丽兰州大学文学院甘肃兰州730000

《声声慢》在宋代存84调,以平韵居多。晁补之的《胜胜慢》延续了章楶双调六十六字《声声令》的主题和声情特点,是《声声令》至《声声慢》词调发展过程中的关键。张阁是第一位使用《声声慢》词调名称的词人,《胜胜慢》和《声声慢》属于... 详细信息

《声声慢》在宋代存84调,以平韵居多。晁补之的《胜胜慢》延续了章楶双调六十六字《声声令》的主题和声情特点,是《声声令》至《声声慢》词调发展过程中的关键。张阁是第一位使用《声声慢》词调名称的词人,《胜胜慢》和《声声慢》属于同调异名。《声声慢》词调沿着晚唐五代花间词的相思离情主题,其声情在词的韵律、题材和词人风格的影响下由早期的缠绵宛转发展出悲咽、欢乐、风流蕴藉、悲壮与清空等丰富的特征。

关键词：《声声慢》词调声情流变

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镍资源找矿突破与综合开发利用

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中国工程科学 2024年第3期26卷 86-97页

作者：徐刚段俊汤中立杨怀玉孙涛闫海卿吴建涛长安大学地球科学与资源学院西安710054 甘肃省地质矿产勘查开发局第二地质矿产勘查院兰州730020 云南大学地球科学学院昆明650500

镍资源是国民经济发展的重要战略资源,也是重要的关键矿产;我国是全球最大的镍金属消费国,也是镍金属原料稀缺国,镍矿产原料对外依存度居高不下,亟需实现镍资源找矿突破、推动镍资源综合开发利用、拓宽镍资源进口渠道,保障镍资源安全稳... 详细信息

镍资源是国民经济发展的重要战略资源,也是重要的关键矿产;我国是全球最大的镍金属消费国,也是镍金属原料稀缺国,镍矿产原料对外依存度居高不下,亟需实现镍资源找矿突破、推动镍资源综合开发利用、拓宽镍资源进口渠道,保障镍资源安全稳定供给。本文在综合分析镍产业最新数据的基础上,梳理了全球和我国镍资源禀赋、供需现状,总结了国内外镍矿床成因类型、时空分布规律和找矿前景,分析了我国镍资源产业发展和供应保障面临的问题,提出了镍矿勘查开发的关键技术及综合利用途径。为保障稳定供应和安全发展,从国际和国内两方面提出了我国镍资源保障路径及对策。在国际方面,稳定以印度尼西亚、菲律宾为代表的重要镍资源进口市场,加大投资镍资源海外矿业项目,增强中资企业的国际竞争能力;加强国际合作,实现镍资源进口渠道的多元化。在国内方面,加大镍资源勘查力度;加强镍资源综合利用,提高再生镍资源利用率;优化传统技术工艺,调整产业结构;强化镍资源储备基地建设,保障有效增储;重视海底铁锰结核等潜在镍矿资源的开采技术研究。

关键词：战略性关键矿产镍资源找矿突破综合开发利用

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全球变暖对水循环的影响:回顾与展望

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第四纪研究 2024年第5期44卷 1079-1092页

作者：杨石岭陈祚伶黄晓芳唐自华张师豪姜文英丁仲礼中国科学院地质与地球物理研究所岩石圈演化与环境演变全国重点实验室北京100029 中国科学院大学地球与行星科学学院北京100049

20世纪70年代以来,全球气候变化引发了学术界的广泛关注。本文简要回顾了最近几十年来不同时间尺度气候变化预测的观点,总结了全球变暖可能引发的环境效应。在此基础上,梳理了新生代地质温暖期的东亚环境状况。从哲学和地质历史的角度... 详细信息

20世纪70年代以来,全球气候变化引发了学术界的广泛关注。本文简要回顾了最近几十年来不同时间尺度气候变化预测的观点,总结了全球变暖可能引发的环境效应。在此基础上,梳理了新生代地质温暖期的东亚环境状况。从哲学和地质历史的角度看气候维持不变是不可能的,未来要么在北半球太阳辐射的驱动下变冷,要么在温室气体的作用下变暖。地质记录和气候模拟结果大多显示,地质温暖期东亚夏季风雨带北进、降水增加;古增温导致水汽含量增加、热带辐合带北移和西太平洋副热带高压扩张是东亚季风降水增加的根本原因;从冰期-间冰期尺度看,全球变暖不仅对东亚地区是利大于弊,对全球大部分地区也是利大于弊;就提升未来气候变化预测和预估准确性而言,加强气候系统内部自然变率研究是当务之急。

关键词：古增温地质记录东亚夏季风大气CO_(2)浓度

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