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chinese Science Bulletin 2004年第24期49卷 2613-2619页

作者： SHANG Qinghua Nanjing institute of geology and Paleontology,{2. {3. of sciences,Nanjing 2.0008,China institute of Vertebrate Paleontology and Paleoanthropology,{2. {3. of sciences,beijing 100044,China Nanjing institute of geology and Paleontology Chinese Academy of Sciences Nanjing 210008 China

The Zhesi (Jisu) Formation of the Middle Per- mian in Nei Mongol (Inner Mongolia) was commonly con- sidered to be a shallow marine sequence. Here I report the radiolarians found in the argillite bed of that formation in Zhesi and Xilinhot areas. This fact indicates a deep marine sedimentary facies persisted during the Middle Permian, and suggests that the ocean between the North China Block and Siberian Craton was not closed until the Late Guadalupian. The suture of this two blocks is probably extends along the Linxi ophiolite belt, south of the Hegenshan ophiolite belt.

关键词：造山带地质意义内蒙古放射虫二叠纪

Geochemistry of high-Mg andesites from the early Cretaceous Yixian Formation, western Liaoning: Implications for lower crustal delamination and Sr/Y variations

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Science China Earth sciences 2006年第9期49卷 904-914页

作者： WANG Xiaorui1, GAO Shan1,2. LIU Xiaoming1, YUAN Honglin1, HU Zhaochu1, ZHANG Hong1,3.& WANG Xuance4 1. State Key Laboratory of Continental Dynamics, Department of geology, Northwest University, Xi`an 710069, China 2. State Key Laboratory of {3. Processes and Mineral {2., China University of Geosciences, Wuhan 43.074, China 3. Shenyang institute of geology and Mineral {2., Shenyang 11003.0} China 4. Guangzhou institute of Geochemistry, chinese academy of sciences, Guangzhou 510640, China 1. State Key Laboratory of Continental Dynamics Department of Geology Northwest University Xi’an 710069 China 2. State Key Laboratory of geological Processes and Mineral resources China University of Geosciences Wuhan 430074 China 3. Shenyang institute of geology and Mineral {2. Shenyang 110032 China 4. Guangzhou institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China

85 volcanic rocks of the Yixian Formation from the Sihetun type section werecollected and analyzed for geochemical and isotopic compositions. Major element compositionsindicate that the Sihetun volcanic rocks are high magnesium andesites with some basalts occurring atthe bottom of section. The Sihetun high magnesium andesites (SiO_2.= 52.82.59.3. wt%, Al_2._3.14.15-16.3.wt%) show many characteristics of adakites such as depletion in heavy rare-earth elements(HREE; Yb = 1.03.1.88 μg/g) and Y(12.2. μg/g) and high Sr (62.-13.2} μg/g) and Sr/Y(3.2}88), withhigh La_N/Yb_N ratio (10-2.). They share similar major and trace element characteristics to volcanicrocks from the Xinglonggou Formation except their lower Nd isotope ratios (^(143.Nd/^(144)Nd(13.Ma) = 0.5118-0.5119, ε_(Nd) (13.Ma) = -11.6-13.8, ^(87)Sr/^(86)Sr (13. Ma) = *** were interpreted in a way that eclogite that formed at the base of thickened Archean lowercrust of the North China craton foundered into the convecting mantle and subsequently melted andinteracted with peridotite. However, compared to the Xinglonggou volcanic rocks, the source of theSihetun magma contained more ancient continental crustal material in order to explain its evolved Ndisotopes. The age of the Sihetun Formation was 12. to 13. Ma, and this indicates that delaminationlasted to the early Cretaceous period. The Sr contents and Sr/Y ratios of the Sihetun high-Mgandesites show significant negative correlations with SiO_2.for samples with SiO_2.> 56%. Thesesuggest that the Sr and Sr/Y values were reduced due to fractional crystallization of ***, the effect of crystallization on volcanic Sr and Sr/Y ratio has to be taken intoaccount.

关键词： high-Mg andesite, Adakite, Yixian Formation, North China Craton, delamination.

REE Geochemistry and Mineralization Characteristics of the Zudong and Gnanxi Granites, Jiangxi Province

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Acta Geologica sinica(English Edition) 1989年第2期63卷 139-157页

作者： Huang Dianhao, Wu Chengyu institute of Mineral Deposits, chinese academy of geological sciences, {2. and Han Jiuzhu Southern Jiangxi {3. Survey Party, Jiangxi Bureau of geology and Mineral resources, Ganzhou Zhang Zhong min institute of Mineral Deposits Chinese Academy of Geological Sciences Beijing China

The Zudong and Guanxi granites are original rocks of the ion adsorption-type HREE and LREE deposits in weathering crust of granites. The ΣREE value and LREE/HREE ratio of the Zudong granite are 2.4 ppm and 0.81-0.2. respectively, and the average Y/ΣREE ratio is 3..8-54.5%. This is mainly due to magmatic crystallization and evolution and deuteric metasomatism (albitization, muscovitization and fluorite-doveritization). These alterations resulted in endogenic mineralizations of yttrium-group REE fluorine carbonates, silicates and arsenates. The Guanxi granite is characterized by LREE enrichment (the average LREE/HREE ratio is 2.43..

关键词： REE Geochemistry and Mineralization Characteristics of the Zudong and Gnanxi Granites Jiangxi Province

Spatial-temporal Frame,Evolution and Mineralization of the Northern Qilian Metallogenic Province

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Acta Geologica sinica(English Edition) 1997年第2期71卷 204-216页

作者： Sun Haitian Wu Jieren and Li Jinping institute of Mineral Deposits, chinese academy of geological sciences, {2. Xi’an institute of geology and Mineral resources, chinese academy of geological sciences, Xi’an, Shaanxi institute of Mineral Deposits, chinese academy of geological sciences, {2. institute of Mineral Deposits Chinese Academy of Geological Sciences Beijing Xi'an institute of geology and Mineral {2. Chinese Academy of Geological Sciences Xi'an Shaanxi institute of Mineral Deposits Chinese Academy of Geological Sciences Beijing [?]Sun Haitian Born in 1955 got a doctorate degree in 1988 conducted postdoctoral research from 1989 to 1991 in the Department of geology and Mineral Resource Engineering Norwegian University of Science and Technology. He is now Research Professor at the Institute of Mineral Deposits Chinese Academy of Geological Sciences and has long been engaged in geology metallogenesis and regional metallogeny of metallic ore deposits with emphases on cooper deposits and volcanic and sedex metallic deposits.

Four metallogenic epochs occurred in different tectonic environments during theevolution of the Northern Qilian metallogenic province through the geological time. The Mid-dle Proterozoic metallogenic epoch witnessed the tectonic environment of crustal breakupcaused by mantle diapirism, in which ultramafic-mafic rocks were intruded along beep faultbelts and the superlarge Jinchuan magmatic Cu-Ni sulphide deposit was formed. In theMiddle-Late Proterozoic metallogenic epoch the crust was further broken to form anintracontinental rift, in which the Chenjiamiao style massive Cu-Fe sulphide deposits hosted bybasic volcanic tuff were formed in the lower volcano-sedimentary sequence, while the largesedex type Jingtieshan style Fe-Cu deposits were formed within the upper abyssal carbon-richargillaceous sedimentary sequence. The Early Palaeozoic saw the aulacogen environment, with-in which the Baiyinchang style superlarge massive base and precious metal sulphide depositshosted by quartz keratophyric tuff were formed in the Middle-Late Cambrian rifted island arcand the massive Cu-Zn sulphide deposits and magmatic chromite deposits associated with theophiolite suite were formed in the Early-Middle Ordovician, and the Honggou style massiveCu-Fe sulphide deposits hosted by spilite were formed in the Late Ordovician back-arc basinenvironment. In the Late Palaeozoic-Meso-Cenozoic, the metallogenic province went into anintracontinental orogenic stage characterized by compressive tectonic environment, in whichthere occurred carbonate-quartz vein type and tectono-alteration gold deposits associated withductile-shear structures.

关键词： northern Qilian metallogenic province evolution and mineralization

Lithosphere types in North China:Evidence from geology and geophysics

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Science China Earth sciences 2005年第11期48卷 1809-1827页

作者： QIU Ruizhao1,2. DENG Jinfu3. ZHOU Su3. LI Jinfa4, XIAO Qinghui1,5, WU Zongxu6 & LIU Cui3.1. institute of geology,{2., beijing 10003., China 2. Development and Research Center, China geological Survey, beijing 10003., China 3. China University of Geosciences, beijing 100083. China 4. China University of Geosciences, Wuhan 43.074, China 5. Information Center of Ministry of Land and resources, beijing 100812. China 6. institute of geology, State Seismological Bureau, beijing 10002., China 1. institute of geology Chinese Academy of Geological Sciences 100037 Beijing China 2. Development and Research Center China Geological Survey 100037 Beijing China 3. China University of Geosciences 100083 Beijing China 4. China University of Geosciences 430074 Wuhan China 5. Information Center of Ministry of Land and resources 100812 Beijing China 6. institute of geology State Seismological Bureau 100029 Beijing China

On the basis of the characteristics of geology and geophysics in North China, three types of lithosphere, namely, the cratonic, the orogenic and the rift lithospheres can be classified. In terms of petrological method (based on the information from Precambrian rock assemblages, igneous activities, deep-seated enclaves, etc.) and the relationship between seismic velocity and rock compositions, the crust-mantle petrological and chemical structure models can be set up. Researching results indicate that the geology and geophysics of North China platform bears the similar characteristics in comparison with those of the global typical cratons. The Eerduosi(Ordos) block located in the west of the North China Platform is a remnant of cratonic lithosphere after the North China platform had undergone “activation” in Mesozoic and “reconstruction” in Cenozoic times. The continental crust consists mainly of TTG rock assemblage while the subcontinental lithosphere mantle mainly consists of strongly depleted harzburgite. The craton was finally formed in late Archaean and early Proterozoic, and has been kept in stability up to present; its crustal-mantle petrological structures of lithosphere can be set up as a reference for the study of North China craton and even Sino-Korean craton. In the Mesozoic period, the middle and east areas of North China platform were activated in the Yanshanian orogenic process, the continental crust was reformed by material and heat-transfer of convective mantle and the original crustal TTG component was reconstructed to be granitic crust, and the subcontinental lithosphere man- tle was replaced by the Yanshanian harzburgite-lherzolite. The Yanshan-Taihang Mountains were the remnants of orogenic lithosphere after the rifting in eastern North China in Cenozoic. The present thickness of continental crust and lithosphere in the Yanshan-Taihang Mountains is not equal to their thickness during the Yanshanian orogenic movement because they had undergone the

关键词： lithospheric types,evidence of geology and geophysics,crust-mantle petrological structure,deep process

Discussion on measurement and calculation principle of petrogenetic depth

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chinese Science Bulletin 1999年第24期44卷 2293-2295页

作者： LU Guxian and LIU Ruixun institute of Geomechanics , chinese academy of geological sciences , {2. 100081 , China Department of {3., Peking University, {2. 100871, China institute of Geomechanics Chinese Academy of Geological Sciences Beiing China Department of geology Peking University Beijing China

Geologic and geophysical data certificate that lithosphere and its down rock behave as solid, therefore,it is better to measure petrogenetic and metallogenetic depth according to internal stress of solid states. Lithomechanic experiment found that the bigger the confining pressure, the bigger the tensile and shear strength of rocks,so rock can bear very high differential stress but it is not broken. Sibson put forward that the property of rocks under 10-15km of the surface changes from brittle to ductile (rather than from elastic to plastic). Rock with ductile de-

关键词： petrogenetic depth solid stress state tectono-original additional hydrostatic pressure rock strength.

Outcrop Sequence Stratigraphy of Neoproterozoic in Hunjiang Area, Jilin Province

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Journal of Earth Science 1996年第1期15卷 20-28页

作者： Qiao Xiufu Gao Linzhi (institute of geology,{2., {3. 10003.)

Three depositional sequences have been recognized in the Neoproterozoic of southern Jilin. In this paper, we focus discussion on the parasequences and their stacking patterns in Wanlong, Badaojiang and Qinggouzi formations and on their diachronism by the theory of sequence stratigraphy, event stratigraphy and chronostratigraphy. The authors advance a new comparison of the Neoproterozoic between Jilin and Liaoning provinces.

关键词： Neoproterozoic sequence stratigraphy parasequence onlap Jilin Province.

Gymnosperms on the eve of the terminal Permian mass extinction in North China and their survival strategies

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chinese Science Bulletin 1998年第11期43卷 889-897页

作者： WANG Ziqiang+1 and ZHANG Zhiping+2. 1. Tianjin institute of geology and Mineral {2., chinese academy of geological sciences, Tianjin 3.0170, China 2. Tianjin Centre of Physical and Chemical Techniques, Tianjin 3.0050, China Tianjin institute of geology and Mineral {2. Chinese Academy of Geological Sciences Tianjin China Tianjin Centre of Phyhical and Chemical Techniques Tianjin China

Main characteristics of the Permian redbed gymnosperms in North China have been summarized: dominant peltasperms and conifers, numerous enigmatics such as Gigantonoclea and Psygmophyllum, and abundant precursors of Mesozoic gymnosperms. Furthermore, stresses affecting these plants survival are suggested to be paleoatmospheric CO-2.concentration, water stress, wind and fire activities, and fungal infection. Consequently, a preliminary analysis accounts for the ecological strategies of these gymnosperms to the P-Tr event.

关键词： North China Permian gymnosperms mass extinction.

New Data of Daomanite and Hongshiite

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Acta Geologica sinica(English Edition) 2001年第4期75卷 458-465页

作者： YU Zuxiang institute of geology,{2., {3. 10003. Fei Zhenbi institute of geology Chinese Academy of Geological Sciences Beijing 100037 [?]2.u Zuxiang Born in 193. graduated from beijing College of geology in 1953 now research professor at the institute of geology CAGS. He has long engaged in the study of platinum minerals and mineral deposits. Tel.: (010)68328449.

In 1974 the author preliminarily reported two new platinum group minerals—daomanite and hongshiite. The two minerals were accepted by the Commission on New Minerals and Minerals Names of the International Mineralogical Association in 1976 and 1982.respectively. Because of the conditions at that time, the work was preliminary, for example, there were only reflectance values of four wave bands. Recently the author again made measurements of reflectances, corrected cell parameters by the four-circle diffractometer and electron diffraction and supplemented their new occurrences and nomenclature.

关键词： daomanite hongshiite new data

Sr and Nd Isotopic Characteristics and Magma Genesis of Mesozoic Volcanic Rocks Along the Coastal Region of Southeastern China

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Acta Geologica sinica(English Edition) 1996年第3期70卷 260-273页

作者： Xue Huaimin, Tao Kuiyuan and Shen JialinNanjing institute of geology and Mineral {2.,{3., Nanjing, Jiangsu Jiang Minxi Nanjing institute of geology and Mineral {2. Chinese Academy of Geological Sciences Nanjing Jiangsu

The Mesozoic volcanic rocks in the coastal region of southeastern China were superimposed on some different basement tectonic elements. The volcanic rocks developed in these different basement tectonic elements have great differences in Sr and Nd isotopic compositions. The rocks in western Zhejiang and northeastern Jiangxi Provinces which belong to the Lower Yangtze subplate have lower initial 87Sr/ 86Sr ratios, but are higher in initial Nd isotopic ratios. The initial 143.d / 144Nd values of the volcanic rocks developed in the Cathaysian subplate increase clearly from early to late in time, and from the core of the Wuyishan uplift coastwards constantly, but the initial 87Sr/86Sr values tend to decrease. The isotopic characteristics and their spatial variations in Mesozoic volcanic rocks in the study region are, to a great extent, manifestations of the isotopic characteristics in basement metamorphic complexes, and the generation of the Mesozoic acid magma in this region is attributed to the recycling of pre-existing crustal materials.

关键词： Nd Sr and Nd Isotopic Characteristics and Magma Genesis of Mesozoic Volcanic Rocks Along the Coastal Region of Southeastern China