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Polyphase Deformation of the Weihai-Rongcheng UHP Unit Rocks,NE Sulu:Insights into the Tectonic Evolution of the Dabie-Sulu UHP and HP Belts,China

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Acta Geologica Sinica(English Edition) 2007年第1期81卷 42-54页

作者： SUO Shutian ZHONG Zengqiu zhou hanwen YOU Zhendong Faculty of Earth Sciences China University ofGeosciences Wuhan Hubei 430074 State Key Laboratory of Geo-Processes and Mineral Resources China University of Geosciences Wuhan Hubei 430074 School of Earth Science and Mineral Resources China University of Geosciences Beijing 100083

Different scales of structural data reveal a complex deformation history of ultrahigh- pressure （UHP） rocks exposed in the Weihai-Rongcbeng area, NE Sulu （northern Jiangsu-eastern Shandong）, eastern China. Excluding pre-UHP deformations, at least five major sequential deformational stages （D1-Ds） are recognized. The first deformation （DO produced a weak foliation and lineation in massive eclogites. The foliated eclogite with a dominant foliation containing a stretching and mineral lineation was developed during the I）2 deformation. Both the D1 and D2 deformations occurred under UHP metamorphic conditions, and are well preserved in the eclogite bodies. D3 structures which developed shortly after the formation of granulite/amphibolite facies symplectites are characterized by imbricated associations marked by a regional, steeply dipping foliation, compositional layering, eclogite boudinage, isoclinal folds and reverse ductile shear zones. The D3 deformation was accompanied by decompressional partial melting. A regional, gently dipping amphibolite facies foliation and stretching lineation, low-angle detachments, and dome- and arc-shaped structures formed during the D4 deformation stage dominate to some degree the map pattern of the Weihai-Rongcbeng UHP domain. The last stage of deformation （Ds） gave rise to the final exhumation of the UHP rocks. Ds is characterized by development of brittle-dominated high-angle faulting associated with emplacement of large volmnes of undeformed granite plutons and dykes dated at 134-100 Ma. The deformational and metamorphic sequence followed by the UHP rocks in the Weihai-Rongcheng area is similar to that studied in the entire Dabie-Sulu UHP and HP metamorphic belts from microscopic to mapping scale. Based on structural data, combined with available petrographic, metamorphic and geochronological data, a speculative tectonic evolutionary model for the Dabie-Sulu UHP and IIP belts is proposed, involving continental subduction/collision be

关键词： Weihai-Rongcheng area ultrahigh-pressure (UHP) metamorphism tectonic evolution,polyphase deformation deformation partitioning

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Metamorphic P-T-t Path of UHT Granulites from the North Tongbai Orogen, Central China

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Journal of Earth Science 2018年第5期29卷 1116-1131页

作者： Hua Xiang Zeming Zhang Liming Zhao Zengqiu Zhong hanwen zhou Key Laboratory of Deep-Earth Dynamics Institute of Geology Chinese Academy of Geological Sciences School of Earth Sciences and Resources China University of Geosciences School of Earth Sciences China University of Geosciences

Although zircon U-Pb geochronometer has been widely used for dating metamorphism in moderate- to high-grade metamorphic rocks, it is still difficult to link the zircon U-Pb age to pressure and temperature （P-T） conditions. In this study, zircon trace elements and Hf isotopes and REE partitioning between zircon and garnet are adopted to track the formation condition of zircon in the granu- lites from North Tongbai Orogen, Central China. Combined with previous metamorphic P-T path results, a quantitative integrated anticlockwise P-T-t path was established for Tongbai granulites. These grauulites recorded an early low-P heating followed by a dramatic pressure increase. Evidence for the prograde history （M1） is provided by cordierite, orthopyroxene and biotite inclusions in garnet. The prograde metamorphism occurred at around 443±3 Ma, with P-T conditions of ca. 730-820 ℃ and 〈6 kbar. The peak metamorphic （M2） condition is 〉920 ℃ and 8.5-10 kbar and the peak metamorphism age is ca. 432±4 Ma. At around 419 Ma, the granulites suffered an amphibolite-facies retrograde metamorphism （M3）, represented by the replacement of garnet by biotite and plagioclase, and clinopyroxene by amphibole, with metamorphic condition of ca. 700℃ and ca. 7 kbar. The last retrograde metamorphism （M4） is a greenschist-facies overprint with an age of ca. 404 Ma. It is concluded that the meta- morphism of Tongbai granulite lasted for more than 40 Ma, including a stage of more than 20 Ma granulitc-facies metamorphism. The prolonged granulite-facies metamorphism resulted from the continuous northward subduction of the Shangdan oceanic crust beneath the North Qinling terrane.

关键词： granulites zircon U-Pb dating P-T-t path trace element Ln-Hf isotope Tongbai Orogen.

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U-Pb zircon geochronology and Hf isotope study of metamorphosed basic-ultrabasic rocks from metamorphic basement in southwestern Zhejiang:The response of the Cathaysia Block to Indosinian orogenic event

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Science China Earth Sciences 2008年第6期51卷 788-800页

作者： XIANG Hua ZHANG Li zhou hanwen ZHONG ZengQiu ZENG Wen LIU Rui JIN Song State Key Laboratory of Geological Processes and Mineral Resources Faculty of Earth SciencesChina University of GeosciencesWuhan 430074China State Key Laboratory of Continental Dynamics Northwest UniversityXi’an 710069China

A combined study using LA-ICP-MS U-Pb dating, Hf isotopes, trace elements and the Ti-in-zircon geothermometer was carried out on zircons from the metamorphosed basic-ultrabasic rocks in the metamorphic basement of the Cathaysia Block, southwestern Zhejiang Province. The formation and metamorphic ages of the rocks from the metamorphic basement of the Cathaysia Block were determined based on zircon U-Pb geochronology. The age for the magmatic crystalline zircons from the protolith is about 1.85 Ga. The ε Hf (t) values of the older zircons were from ?7 to ?3, with two-stage model Hf ages (T DM2 LC ) of about 2.9 to 3.4 Ga, indicating that the source material was derived from anatexis and recycling of the Archean crust. The newly formed metamorphic zircons yielded U-Pb ages of 260–230 Ma. The metamorphic temperature calculated using the Ti-in-zircon geothermometer ranged from 610 to 720°C, consistent with the results from petrographic observations, indicating that the Cathaysia Block experienced an amphibolite facies metamorphism during the Indosinian. Results from this study provided an important timeframe for the tectonic evolution in South China and the Southeast Asia during the Late Permian and Early Triassic times.

关键词： U-Pb dating Hf isotopes Ti-in-zircon geothermometer Indosinian orogenics southwestern Zhejiang Province

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Shoshonitic intrusive suite in SE Guangxi: Petrology and geochemistry

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Chinese Science Bulletin 2000年第7期45卷 653-659页

作者： LI Xianhua zhou hanwen LIU Ying LEE Chi-yu SUN Min CHEN Chenhong Guangzhou Institute of Geochemistry Chinese Academy of SciencesGuangzhou 510640China Department of Earth Sciences University of Hong KongPokfulam RoadHong KongChina Department of Geology Taiwan UniversityTaipei 106-17China

A NE-direction Mesozoic shoshonitic intrusive s黫te in SE Guangxi has been identified in terms of geological, petrological and geochemical investigations. The shoshonitic intrusives are characterized by enrichment of LILE, HFSE and LREE and no obvious Nb-Ta depletion, similar to those potassic rocks formed in within-plate and rifting environments. Unlike most shoshonitic rocks forming in arc settings, the SE Guangxi shoshonitic intrusives were likely generated during regional lithosphere extension induced by upwelling of asthenosphere mantle.

关键词： shoshonitic rocks petrology element geochemistry Guangxi.

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Age of granulite from Huangtuling, Dabie Mountain:Pb-Pb dating of garnet by a stepwise dissolution technique

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Chinese Science Bulletin 1999年第10期44卷 941-944页

作者： hanwen zhou Xianhua Li Ying Liu Zhendong You Shutian Suo Zengqiu Zhong Chinese Acad Sci Guangzhou Inst Geochem Canton 510640 Peoples R China China Univ Geosci Dept Geol Wuhan 430074 Peoples R China

A new stepwise dissolution scheme, involving acids with different properties, enables the selective recovery of radiogenic and common Pb from a mineral, and makes single-mineral Pb-Pb dating possible. Garnet from a granulite sample from Huangtuling, northern Dabie Mountain yields a Pb-Pb isochron age of (1098 ± 35) Ma, which is interpreted as the timing of peak metamorphism of granulite facies.

关键词： garnet stepwise dissolution technique Pb-Pb isochron age dating of metamorphic rocks granulite Dabie Mountain.

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IDeAS:an interactive database for dysregulated alternative splicing in cancers across Chinese and western patients

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Journal of Molecular Cell Biology 2023年第11期15卷 58-61页

作者： hanwen zhou Liyun Yuan Yuanhu Ju Yue Hu Siqi Wang Ruifang Cao Zefeng Wang Guoqing Zhang National Genomics Data Center&Bio-Med Big Data Center CAS Key Laboratory of Computational BiologyShanghai Institute of Nutrition and HealthChinese Academy of SciencesShanghai 200031China University of Chinese Academy of Sciences Chinese Academy of SciencesBeĳing 101408China Shanghai Southgene Technology Co. LtdShanghai 201210China Department of Biology Southern University of Science and Technology(SUSTech)Shenzhen 518055China

Splicing of pre-RNA is a key step in regulating eukaryotic gene *** human genes undergo alternative splicing(AS),where the splice sites in a single gene can be selectively paired to produce multiple isoforms,greatly expanding the functional diversity(Pan et al.,2008;Wang et al.,2008).The regulation of AS plays a critical role in many cellular activities,such as cell ***,the dysregulation of AS can lead to a variety of diseases,including cancers(Scotti and Swanson,2016).

关键词： expression cancers

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Caledonian reworking of Paleoproterozoic basement in the Cathaysia Block: Constraints from zircon U-Pb dating, Hf isotopes and trace elements

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Chinese Science Bulletin 2008年第6期53卷 895-904页

作者： ZENG Wen ZHANG Li zhou hanwen ZHONG ZengQiu XIANG Hua LIU Rui JIN Song LU XinQian LI ChunZhong State Key Laboratory of Geological Processes and Mineral Resources Faculty of Earth Sciences China University of Geosciences (Wuhan) Wuhan 430074 China State Key Laboratory of Continental Dynamics Northwest University Xi'an 710069 China The 7th Geological Team of Zhejiang Province Lishui 323000 China

A combined study of zircon U-Pb dating, Hf isotopes and trace elements has been carried out for granodioritic neosomes of migmatites from the Tianjingping area in northwestern Fujian Province. Zircons are characterized by zoning, higher Th/U ratios (mostly ≥0.1), HREE enrichment, and positive Ce and negative Eu anomalies, and show features similar to magmatic or anatectic zircons. Apparent 206Pb/238U ages for the zircons are 447±2 Ma (95% conf., MSWD = 0.88), corresponding to a Caledonian event. εHf(t) values are ?13.3 to ?9.7, indicating a crustal source. Two-stage Hf model ages are 1.7 to 1.9 Ga, suggesting that protolith of the migmates was probably formed in the Paleoproterozoic. The granodioritic neosomes have the characteristics of peraluminous calc-alkaline granite, and their REE patterns and trace elements spidergrams show features of middle to upper crustal rocks. Together with previous studies, we conclude that the protolith of the Cathaysia basement in the Tianjingping area was likely formed in the middle-late Paleoproterozoic and experienced partial melting during the Caledonian period. The recognition of Caledonian reworking of the Paleoproterozoic basement in the Cathaysia Block provides a new insight into the tectonic evolution of the Cathaysia Block in the Caledonian pe- riod and the interaction between the Cathaysia Block and the Yangtze Block.

关键词：锆石测年法铪同位素示踪苏格兰地球化学

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Structural Evidence for the in-situ Origin of the HP and UHP Eclogites in the Dabie-Sulu Orogenic Belt

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Acta Geologica Sinica(English Edition) 2003年第3期77卷 304-310页

作者： ZHONG Zengqiu, YANG Qijun, SUO Shutian, zhou hanwen and YOU Zhendong China University of Geosciences, Wuhan, Hubei 430074 E-mail: zqzhong@*** Hao Ziguo and Liu Xinzhu China Univ Geosci Wuhan 430074 Peoples R China

Whether the HP and UHP metamorphic rocks of the Dabie-Sulu orogenic belt are of an "in-situ" or "foreign" origin is a long-standing dispute among geologists. Eclogites preserved today in the HP and UHP units constitute merely 5-10%, which are not isolated exotic bodies tectonically intruding into amphibolite facies gneiss, but remnants of once pervasive or widespread eclogite-facies terranes or slabs. The present spatial distribution and forms of the eclogites have resulted from polyphase and progressive deformation and strain partitioning of the HP and UHP slabs. From their formation in deep mantle to their exhumation to the surface, the eclogites have experienced long-term deformation with different strain regimes. The dominant regime responsible for the present spatial distribution and forms of the eclogites is the shear process. The deformation patterns of the eclogites and gneiss matrix also clearly show that the eclogites were metamorphosed in situ. The original distribution area of the eclogites

关键词： HP and UHP metamorphic rocks Dabie-Sulu orogenic belt in situ

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High Pressure Metamorphism of Garnet-Amphibole Rocks from Songshugou Area,Eastern Qinling Mountain and Its Tectonic Implication

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Journal of Earth Science 1993年第1期12卷 41-50页

作者： Chen Nengsong Yang Yong zhou hanwen Lu QiChina University of Geosdences, Wuhan 430074

Eclogitic garnet-amphibole rocks are scattered around me Songshugou ultramafic bodies in Qinling Mountains . Three metamorphic stages are recognized in terms of petrography, mineral chemistry and geothermobarometry . The first alhite-amphibole stage was of greenschist facies metamorphism with typical mineral assemblage of actinolite+epidote+chlorite+albite ; the pressure and temperature conditions were equal to or lower than 500MPa and about 400 ℃ .The second prograde eclogitic garnet-amphibole stage was of amphibole-eclogite fades metamorphism with typical mineral assemblage of garnet+hornblende± clinopyroxene+ruffle without ptagioclase ,the pressure condition was at least 1000- 1200MPa and the temperature about 600 ℃ .The third retrograde epidote-amphibole stage was of epidote-amphibolite fecies with assemblage of plagioclase+hornblende+epidote+ilmenite/titanite , the temperature was 500-600 ℃ and the pressure from 800MPa down to 500MPa .All three stages took place in one single tectonothermal event called Jinningian movement at about 1000Ma .The p-T path shows a hairpin shape and thus indicates a metamorphism in the sobduction environment. The metamorphk processes of the garnet- amphibole rocks thus provides a significant evidence for the pbte tectonic movement prevailing in the late Middle Proterozoic period.

关键词： garnet-amphibole rock high pressure aureole p- T path subdution tectonic process Eastem Qinling Mountain.

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Relic UHP Structures in Dabie-Sulu Region, China: Structural Expression and Geodynamic Significance

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Journal of Earth Science 2000年第3期19卷 40-46页

作者： Suo Shutian Zhong Zengqiu You Zhendong zhou hanwen Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China

The present day observed tectonic framework of ultrahigh pressure (UHP) metamorphic belt in the Dabie Sulu region was dominantly formed by an extensional process at 200-170 Ma, under amphibolite facies conditions, following the Triassic collision between the Sino Korean and Yangtze cratons. UHP relic structures, including massive eclogites with a weak foliation, UHP shear zones and A type folds, that are preserved in less retrograde metamorphism and deformation overprinted eclogite lenses can be recognized using the tectonic analysis. Examples are drawn from the Chengmagang area and Hejiawan area, Hubei; Bixiling area, Anhui, and Donghai area, northern Jiangsu. A speculative kinematic model is proposed for the collision between the cratons based on the UHP relic structures studied, in combination with the data of petrography, geochronology and P T path of UHP metamorphic rocks in the studied region which were reported in literature. It is stressed that only the early UHP relic structures, particularly, regionally consistent foliation and stretching lineations, record and reflect the formation of the UHP metamorphic rocks, and the relative dynamic and kinematic process related to the Triassic NNE directed oblique collision between the Sino Korean and Yangtze cratons.

关键词： UHP relic structure extensional process compressional regime stretching lineation Dabie Sulu region.

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