Guohan Yan

Peking University

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Baolei Mu

Peking University

Guanyu Wang

Peking University Third Hospital

LI Feng-tang

Chinese Academy of Geological Sciences

Zhang Renhu

Lanzhou University of Technology

XU Baoliang

Peking University

Kangxu Ren

Research Institute of Petroleum Exploration and Development

Jianhui CAI

Jiangxi Provincial People's Hospital

Qiao Guangsheng

Chinese Academy of Sciences

Cai Jian-hui

Sun Yat-sen University

Tianren Zou

Chinese Academy of Geological Sciences

Cooperative Institutions

Peking University

Chinese Academy of Sciences

Chinese Academy of Geological Sciences

Institute of Geology and Geophysics

Lanzhou University of Technology

Central South University

Ministry of Natural Resources

China National Petroleum Corporation (China)

China University of Geosciences (Beijing)

Kunming University of Science and Technology

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A skarn-type lead-zinc deposit related to low18O magma

Chinese Science Bulletin (1997)

Baolei Mu Ji’an Shao Guanyu Wang Guohan Yan Yongfu Ai

10.1007/bf02882575

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Citations (3)

Alkaline Intrusives at the East Foot of the Taihang‐Da Hinggan Mountains: Chronology, Sr, Nd and Pb Isotopic Characteristics and Their Implications

Acta Geologica Sinica - English Edition (2000)

Guohan Yan XU Baoliang Baolei Mu Guanyu Wang Zhaoshan Chang

Abstract Based on the Rb‐Sr isochron dating results, this paper suggests that the alkaline intrusive belt at the east foot of the Taihang‐Da Hinggan Mountains were formed between 135 and 122 Ma. And the alkaline intrusives in the north and south sections of this belt have entirely different Sr, Nd and Pb isotopic characteristics, i.e., all the rocks in the south section have positive ɛ Sr ( t ) and negative ɛ Nd ( t ) values and all those in the north have the opposite values. On the ɛ Sr ( t ) versus ɛ Nd ( t ) correlation diagram, the samples from the south are concentrated along the enriched mantle evolution trend lines and nearby, while those from the north fall along the depleted mantle trend lines and nearby. On the Pb isotope composition diagram, most of the samples from the south section fall on the mantle Pb evolution line and nearby, while those from the north lie between the Pb evolution lines of the mantle and the orogenic belt. The above‐stated isotopic characteristics not only indicate that the source rocks of the alkaline intrusives in the south section have a close connection to materials from the enriched mantle reservoir, while those in the north are related to materials from the depleted one, but also reveal that the upper mantle below the North China platform is enriched and that below the Inner Mongolia geosyncline is depleted.

Geosyncline

Chronology

Isochron dating

10.1111/j.1755-6724.2000.tb00493.x

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Citations (17)

Triassic alkaline intrusives in the Yanliao-Yinshan area: their chronology, Sr, Nd and Pb isotopic characteristics and their implication

Science in China Series D Earth Sciences (1999)

Guohan Yan Baolei Mu XU Baoliang Guoqi He Linkun Tan

Chronology

10.1007/bf02877785

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Citations (59)

Lithogeochemistry of the Taershan‐Erfengshan Alkaline Complex and its Metallogenic Significance

Acta Geologica Sinica - English Edition (2014)

Yaying Wang Jianhui CAI Guohan Yan Zhijiao Yan

Metallogeny

Christian ministry

Mineral resource classification

10.1111/1755-6724.12367_24

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The Chemical Composition and Texture of the Multicomponents Feldspar in the Fanshan Complex,and Their Implications

Bulletin of Mineralogy Petrology and Geochemistry (2013)

Guohan Yan

The early mesozoic Fanshan potassic alkaline ultramafic-syenite complex in north China consists of three lithofacies.On the basis of the systematic mineralogy researches,this study focuses on compositions and textures of K-feldspars formed in different stages.The results show that the complex is generally rich in K and that the feldspars in different lithofacies have different compositions,reflecting variation of the magmatic composition in different stages.Trace elements of the feldspars are further studied with hyalophane and strontium hyalophane identified for the first time in this area.The comparing study of the feldspars bearing Sr and Ba of different stages reveals multiphase mesomatism of K-rich fluids.This work is important to better understand lithogeny and magmatic evolutions of this area.The significant increasing of Sr and Ba contents in the later-period magma implies that the lithospheric mantle,which is the magma source,tended to enrich in the study area in the early Mesozoic.

Texture (cosmology)

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Geochemical and Sr-Nd isotopic study of alkaline syenites in Liangtun-Kuangdonggou, Liaoning Province, China: Evidence for enriched mantle before 1.86 Ga and implications

Geochemistry (2005)

Kangxu Ren Guohan Yan Cai Jian-hui Baolei Mu LI Feng-tang

Lile

Incompatible element

Rare-earth element

Nepheline syenite

Trace element

10.1007/bf02871316

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Citations (2)

SHRIMP U-Pb Zircon Age and Its Implications of Quartz Syenite in Hadamengou, Inner Mongolia *

Kangxu Ren Guohan Yan Jianhui CAI Tianren Zou Baolei Mu

Based on dating zircon TIMS and SHRIMP U-Pb ages for the ore-controlling quartz syenite of Hadamengou large gold deposit, Inner Mongolia, the authors confirmed that the quartz syenite intruded upon during the early of Pa- leoproterozoic. Its zircon SHRIMP U-Pb concordant point age was (2483 ± 10) Ma(1σ) and the upper intersection age gived (2508 ± 41) Ma(1σ) on the disaccording line respectively. The quartz syenite in Hadamengou was proved the oldest Paleoproterozoic alkali-rich intrusive rock in China till now. Its old age and its distribution of the alkali-rich in- trusive rock had important tectonic significance. It revealed that after the amalgamation at the end period of Archean, the crust of North China Craton had reached some thickness and had transformed into a kind of extensional tectonic settings since the intrusion of the alkali-rich intrusive rock in Hadamengou.

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Citations (1)

Geological Features of Triassic Alkaline and Subalkaline Igneous Complexes in the Yan‐Liao Area

Acta Geologica Sinica - English Edition (1992)

Mou Baolei Guohan Yan

Abstract A number of Triassic (245–195 Ma) alkaline or subalkaline igneous complexes were discovered in the Yan‐liao area in the northern part of the North China platform. These complexes are all poor in SiO 2 ; most of them are rich in Fe, Mg, K and P and such incompatible elements as Rb, Ba, U and Sr and REE; the initial 87 Sr/ 86 Sr ratios range from 0.7055 to 0.7057. They might have originated in the altered upper mantle. On that basis coupled with the distribution of the Triassic System and the tectonic deformation, it is suggested that there should have existed a tectono‐magmatic belt in the area in Triassic time, which is an important manifestation of the Indosinian movement in the area.

10.1111/j.1755-6724.1992.mp5004002.x

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Citations (8)