|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Discovery of the eclogite and its petrography in the Northern Dabie Mountain显示文摘Eclogite from the Northern Dabie Mountain is a new finding by the authors. These eclogites in foliated perdotite are enveloped by banded gneiss and occur in the mafic-ultramafic rock belt. They are mainly composed of omphacite, garnet, diopside, orthopyroxene, amphibole, plagioclase and magnetite, and a small amount of rutile, spinel, olivin and 鏾rundum. The mineral association of peak metamorphism of the eclogite is omphacite+garnet+rutile. The existence of eclogite in the Northern Dabie Mountain implies that there was an eclogitic metamorphism prior to the granulitic facies one in the mafic-ultramafic rock belt. | XU Shutong LIU Yican SU Wen WANG Rucheng JIANG Laili WU Weiping | 2000 | Chinese Science Bulletin2000，45，3： | 39 |
| 2 | Detachment within subducted continental crust and multi-slice successive exhumation of ultrahigh-pressure metamorphic rocks: Evidence from the Dabie-Sulu orogenic belt显示文摘Although tectonic models were presented for exhumation of ultrahigh-pressure (UHP) metamorphic rocks during the continental collision, there is increasing evidence for the decoupling between crustal slices at various depths within deeply subducted continental crust. This lends support to the multi-slice successive exhumation model of the UHP metamorphic rocks in the Dabie-Sulu orogen. The available evidence is summarized as follows: (1) the low-grade metamorphic slices, which have geotectonic affinity to the South China Block and part of them records the Triassic metamorphism, occur in the northern margin of the Dabie-Sulu UHP metamorphic zone, suggesting decoupling of the upper crust from the underlying basement during the initial stages of continental subduction; (2) the Dabie and Sulu HP to UHP metamorphic zones comprise several HP to UHP slices, which have an increased trend of metamorphic grade from south to north but a decreased trend of peak metamorphic ages correspondingly; and (3) the Chinese Continental Science Drilling (CCSD) project at Donghai in the Sulu orogen reveals that the UHP metamorphic zone is composed of several stacked slices, which display distinctive high and low radiogenic Pb from upper to lower parts in the profile, suggesting that these UHP crustal slices were derived from the subducted upper and middle crusts, respectively. Detachment surfaces within the deeply subducted crust may occur either along an ancient fault as a channel of fluid flow, which resulted in weakening of mechanic strength of the rocks adjacent to the fault due to fluid-rock interaction, or along the low-viscosity zones which resulted from variations of geotherms and lithospheric compositions at different depths. The multi-slice successive exhumation model is different from the traditional exhumation model of the UHP metamorphic rocks in that the latter assumes the detachment of the entire subducted continental crust from the underlying mantle lithosphere and its subsequent exhumation as a whole. This also reveals the difference between the continental subduction and oceanic subduction. In addition, several important proposals concerning the multi-slice successive exhumation model are made for further studies. | LIU YiCan LI ShuGuang | 2008 | Chinese Science Bulletin2008，53，20： | 28 |
| 3 | Neoarchean(2.5-2.8 Ga) crustal growth of the North China Craton revealed by zircon Hf isotope:A synthesis显示文摘The crustal growth of the North China Craton(NCC) during the Neoarchean time(2.5—2.8 Ga) is a hotly controversial topic,with some proposing thai the main crustal growth occurred in the late Neoarchean (2.5—2.6 Ga),in agreement with the time of the magmatism,whereas others suggest that the main crustal accretion took place during early Neoarchean time(2.7—2.8 Ga),consistent with the time of crustalformation of other cratons in the world.Zircon U-Pb ages and Hf isotope compositions can provide rigorous constraints on the time of crustal growth and the evolution and tectonic division of the NCC.In this contribution, we make a comprehensive review of zircon Hf isotope data in combination with zircon U-Pb geochronology and some geochemistry data from various divisions of the NCC with an aim to constrain the Neoarchean crustal growth of the NCC.The results suggest that both 2.7—2.8 Ga and 2.5—2.6 Ga crustal growth are distributed over the NCC and the former is much wider than previously suggested.The Eastern block is characterized by the main 2.7—2.8 Ga crustal growth with local new crustal-formation at 2.5—2.6 Ga,and the Yinshan block is characterized by~2.7 Ga crustal accretion as revealed by Hf-isotope data of detrital zircons from the Zhaertai Group.Detrital zircon data of the Khondalite Belt indicate that the main crustal growth period of the Western block is Paleoproterozoic involving some~2.6 Ga and minor Early- to Middle-Archean crustal components,and the crustal accretion in the Trans-North China Orogen(TNCO) has a wide age range from 2.5 Ga to 2.9 Ga with a notable regional discrepancy.Zircon Hf isotope compositions,coupled with zircon ages and other geochemical data suggest that the southern margin may not be an extension of the TNCO,and the evolution and tectonic division of the NCC is more complex than previously proposed,probably involving multi-stage crustal growth and subduction processes.However, there is no doubt that 2.7—2.8 Ga magmatism and crustal-formation are more widely distributed than previously considered,which is further supported by the data of zircons from Precambrian lower crustal rocks, overlying sedimentary cover,modern river sediments and Late Neoarchean syenogranites. | Andong Wang Yican Liu | 2012 | Geoscience Frontiers2012，3，2： | 25 |
| 4 | Zircon U-Pb geochronology,geochemistry and Sr-Nd-Pb isotopes from the metamorphic basement in the Wuhe Complex:Implications for Neoarchean active continental margin along the southeastern North China Craton and constraints on the petrogenesis of Mesozoic g显示文摘我们在北方中国 Craton (NCC ) 的东南的边缘从 mafic granulites 和 Wuhe 建筑群的石榴石角闪岩报导锆石 U-Pb 地球年代学,地球化学和 Sr-Nd-Pb 同位素数据。在有以前的数据的联合,我们的结果证明这些岩石代表古老的更低的外壳的碎片,并且在 NCC 的北边缘有 granulite 地下室的类似于那些的特征。Pb 同位素数据的详细评估证明 Pb 同位素不能有效地关于岩浆的来源和产生把 Yangtze Craton 地下室的角色与 NCC 地下室的区分开来,至少为东南的 NCC。年龄数据建议在 Wuhe 建筑群的 granulites 或角闪岩的 protoliths 很可能在 Neoarchean 被产生并且这些岩石受到 Paleoproterozoic (1.81.9 Ga ) 高压的 granulite 外形变态。这研究也证明在力量在一个构造背景形成了的 NCC 的东南的边缘的前寒武纪的变形地下室由迟了的 Neoarchean 活跃大陆人边缘描绘了。 | Andong Wang Yican Liu M.Santosh Xiaofeng Gu | 2013 | Geoscience Frontiers2013，4，1： | 20 |
| 5 | Zircon SHRIMP U-Pb dating for olivine gabbro at Wangmuguan in the Beihuaiyang zone and its geological significance显示文摘Zircon SHRIMP U-Pb dating was per- formed for olivine gabbro at Wangmuguan in the Beihuaiyang zone of the Dabie orogen and its coun- try rock (garnet-bearing epidote-mica-quartz schist). The results show that the gabbro was crystallized at 635 ± 5 Ma, in the late Neoproterozoic rather than in the late Paleozoic as previously suggested; its coun- try rocks formed at 464±7 Ma, younger than the en- closed gabbro. The U-Pb age for the gabbro is in good agreement with ages for tuff interbedded with sediments from the Doushantuo Formation in the South China Block and late-Neoproterozoic basic dyke swarms distributed on a large scale over areas of Suizhou to Zaoyang of Hubei Province in the northern margin of the South China Block. This sug- gests a large-scale magmatic activity occurred at the late Neoproterozoic in the South China Block, so that the gabbro at Wangmuguan in the western segment of the Beihuaiyang zone is geotectonic affinity to the northern margin of the South China Block. Since the olivine gabbro occurs within the schist of Ordovician protolith with tectonic contact between them but forming in different tectonic settings, it is concluded that the late-Neoproterozoic gabbro was detached from the Precambrian basement of the South China Block during the Triassic subduction of the South China Block, and tectonically thrusted over the metamorphosed rocks in the southern margin of the North China Block. | LIU Yican LI Shuguang GU Xiaofeng HOU Zhenhui | 2006 | Chinese Science Bulletin2006，51，20： | 16 |
| 6 | Tectonic Framework and Evolution of the Dabie Mountains in Anhui, Eastern China显示文摘The Dabie Mountains are believed to be a collisional orogenic belt between the Yangtze amd Sino-Koreancontinental plates. It is composed of the foreland fold-thrust zone, the subducting cover and basement of theYangtze continental plate, the coesite- and diamond-bearing ultra-high pressure metamorphic zone and themeta-ophiolitic melange zone in the subducting basement, the fore-arc flysch nappe and the back thrust zoneoccurring respectively on the southern and northern margins of the Sino-Korean continental plate and the in-herited basin with molassic deposits on the northern margin. When the palaeo-Dabie oceanic plate subductednorthward in the Early Palaeozoic, volcanic arc and back arc basin probably formed on the southern margin ofthe Sino-Korean continental plate. The Sm / Nd isotopic dating of the strata and eclogite which were drawn in-to the foreland fold-thrust zone indicates that the intense collision of the two continental plates took place inthe Early Mesozoic. | Xu Shutong Jiang Laili Liu Yican Zhang Yong Institute of Geological Sciences of Anhui Province, Hefei, Anhui Sun Sheping | 1992 | Acta Geologica Sinica(English Edition)1992，66，3： | 12 |
| 7 | Occurrence of Neoproterozoic low-grade metagranite in the western Beihuaiyang zone,the Dabie orogen显示文摘Based on detailed field investigations and petrographic observations,we discovered Neoproterozoic-emplaced granite from the metavolcanics of the Dingyuan Formation in the western Beihuaiyang zone,the Dabie orogen. This study reports the results of zircon U-Pb dating and preliminary petrographic observations on two metagranite samples. The studied rocks experienced epidote-amphibolite facies metamorphism and strong structural deformation. Their U-Pb ages are 726 ± 6 and 758 ± 12 Ma,respectively,similar to those for the Luzhenguan complex in the eastern segment of the Beihuaiyang zone. In combination with previously determined 635 ± 5 Ma low-grade metagabbro,this study suggests the occurrence of at least two types of Neoproterozoic intrusive rocks in the Beihuaiyang zone,the northern margin of the South China Block (SCB):726-758 Ma metagranite and 635 Ma metagabbro. These rocks occur within the metamorphosed Ordovician volcanic zone (originally named the Dingyuan Formation) and are in tectonic contact to each other,but they formed in different tectonic settings. The protolith ages for the Neoproterozoic low-grade metaigneous rocks are in good agreement not only with ages for two episodes of mid-and late-Neoproterozoic mafic and felsic magmatism in the Suizhou and Zaoyang area,Hubei Province,but also agree with protolith ages of ultrahigh-pressure metaigneous rocks in the Dabie-Sulu orogenic belt. In view of their tectonic relationships to country rocks,it appears that these Neoproterozoic low-grade rocks are exotic and they may have been detached and scraped from subducting SCB crust in the early Triassic during the initial continental subduction,and thrusted over Paleozoic metamorphosed rocks in the southern margin of the North China Block during continental collision. | LIU YiCan LIU LiXiang GU XiaoFeng LI ShuGuang SONG Biao | 2010 | Chinese Science Bulletin2010，55，30： | 10 |
| 8 | Post-collisional extensional and thrust-nappe structures in northern part of Dabie Mountains显示文摘Thrust-nappe structures and extensional struc-tures simultaneously occur in the northern part of the Dabie Mountains. The systematic structural study reveals that extensional structures along the Mozitan-Xiaotian fault and thrust-nappe structures that take the Jinzhai-Shucheng fault as their frontal thrust share the same shear sense, and display a transitional relationship from the ductile exten- sional structure of deep level in the south to the ductile-brit- tle and brittle thrust-nappe structure of shallow level in the north. The extensional and thrust-nappe structures in the region are explained to result from post-collisional processes by the continuous subduction of the Yangtze continental block and the extension induced by the uplifting of the core part of the Dabie Mountains, which are components of the extensional structures produced in the exhumation process of the ultrahigh pressure metamorphic rocks in the Dabie Mountains. Because of the frontal blocking in the process of the north-westward spreading, the extension and detachment of the low-grade metamorphic rocks along the Mozi-tan-Xiaotian fault was transformed into the northwestward thrusting, resulting in the thrust-nappe structures. They de-veloped in the period of 200 170 Ma, maybe last till the late Jurassic. | JIANG Laili, WU Weiping, CHU Dongru, LIU Yican & ZHANG Yong Geological Survey of Anhui Province , Hefei 230001, China Correspondence should be addressed to Jiang Laili (e-mail: lailij@mail. hf.ah.cn) | 2003 | Chinese Science Bulletin2003，48，21： | 9 |
| 9 | Paleoproterozoic Multistage Metamorphic Ages Registered in the Precambrian Basement Rocks at the Southeastern Margin of the North China Craton and Their Geological Implications显示文摘Objective The Precambrian basement rocks in the Bengbu and neighboring areas,located at the southeastern margin of the North China Craton,occur as granulite terrains and xenoliths in the Mesozoic dioritic porphyry.They provide an excellent natural laboratory to study the formation and evolution of the Precambrian lower crust in the region. | LIU Yican ZHANG Pingang WANG Chengcheng NIE Jiazhen | 2016 | Acta Geologica Sinica(English Edition)2016，90，6： | 6 |
| 10 | New U-Pb Geochronological Constraints on Formation and Evolution of the Susong Complex Zone in the Dabie Orogen显示文摘Objective The Susong complex zone(SCZ)is a relatively lowgrade metamorphic unit mostly with an epidoteamphibolite facies,located in the southernmost part of the Dabie orogen.However,its rock compositions,ages,metamorphic processes and petrogenesis are | LI Yuan LIU Yican YANG Yang DENG Liangpeng | 2017 | Acta Geologica Sinica(English Edition)2017，91，5： | 5 |
| 11 | The white schist assemblage in the kyanite quartzite from the ultrahigh-pressure metamorphic belt, eastern Dabie Mountains显示文摘The kyanite quartzite from the ultrahigh-pressure metamorphic belt in the eastern Dabie Mountains is composed mainly of quartz, kyanite, talc and epidote, which contains a typical mineral assemblage of white schist. It suffered an eclogite facies metamorphism of P =(2 4±0 3) GPa and T =630℃ together with coexisting eclogite. The protolith may be an aplite replaced by high-pressure fluid of eclogite facies. | Laili Jiang Shutong Xu Yican Liu Weiping Wu Wen Su | 1998 | Chinese Science Bulletin1998，43，19： | 2 |
| 12 | Phase Equilibria Modeling and P-T Evolution of the Mafic Lower-Crustal Xenoliths from the Southeastern Margin of the North China Craton显示文摘The Precambrian lower crust rocks at the southeastern margin of the North China Craton(NCC) are mainly exposed as granulite xenoliths hosted by Mesozoic dioritic porphyry and metamorphic terrains in the Xuzhou-Suzhou area. Garnet amphibolites and garnet granulites are two kinds of typical lower-crustal xenoliths and were selected to reconstruct different stages of the metamorphic process. In this study, in view of multistage metamorphic evolution and reworking, phase equilibria modeling was used for the first time to better constrain peak P-T conditions of the xenoliths. Some porphyroblastic garnets have a weak zonal structure in composition with homogeneous cores and were surrounded by thin rims with an increase in XMg and a decrease in XCa(or XMg). Clinopyroxene contain varying amounts of Na_2O and Al_2O_3 as well as amphibole of TiO_2, while plagioclases are different in calcium contents. Peak metamorphic P-T conditions are calculated by the smallest garnet x(g)(Fe^(2+)/(Fe^(2+)+Mg)) contours and the smallest plagioclase ca(pl)(Ca/(Ca+Na)) contours in NCFMASHTO(Na_2O-CaO-FeO-MgO-Al_2O_3-SiO_2-H_2O-TiO_2-Fe_2O_3) system, which are consistent with those estimated by conventional geothermobarometry. The new results show that the peak and decompressional P-T conditions for the rocks are 850-900 ℃/1.4-1.6 GPa and 820-850 ℃/0.9-1.3 GPa, respectively, suggestive of high and middle-low pressure granulite-facies metamorphism. Combined with previous zircon U-Pb dating and conventional geothermobarometry data, it is indicated that the xenoliths experienced a clockwise P-T-t evolution with nearisothermal decompressional process, suggestive of the Paleoproterozoic subduction-collision setting. In this regard, the studied region together with Jiao-Liao-Ji belt is further documented to make up a Paleoproterozoic collisional orogen in the eastern block of the NCC. | Jiazhen Nie Yican Liu Yang Yang | 2018 | Journal of Earth Science2018，29，5： | 2 |
| 13 | The dual functional lithium lead test blanket module and the testing strategy for ITER 显示文摘 | Wu Yican Wang Weihua Liu Songlin | 2005 | Chinese Journal of Nuclear Science and Engineering2005，25，4： | 1 |
| 14 | Detrital Zircon Geochronology and Provenance of Metasedimentary Rocks from the Susong Complex Zone in the Dabie Orogen显示文摘The Susong complex zone is a relatively low-grade metamorphic unit located in the southern part of the Dabie orogen and preserves a variety of metasedimentary rocks,mostly with epidote-amphibolite facies.However,their depositional age,provenance and tectonic setting of sedimentary protolith remain controversial due to the lack of fossils,precise dating and integrated geochemical investigation.This study has conducted whole-rock elemental,and zircon U-Pb SHRIMP dating and Lu-Hf isotope analyses on three types of representative metasedimentary rocks including garnetbearing mica-quartz schist,graphite-muscovite-quartz schist and dolomitic marble from the Susong complex zone.The UPb SHRIMP dating data indicate that the sedimentary protolith of these rocks have the maximum depositional ages of less than 840-750 Ma and have various sedimentary provenances.In combination with zircon Lu-Hf isotope compositions,the provenance of the metasedimentary rocks in the region is for the first time documented to be mainly derived from four groups of magmatic rocks formed at~2.5 Ga,~2.0 Ga,~1.4 Ga and~0.8 Ga in response to four episodes of igneous activity in the northeastern margin of the Yangtze Block.The conventional geothermobarometry combined with rare metamorphic zircon ages indicate that the studied rocks underwent the Late Triassic continental subduction-related metamorphism with peak epidote-amphibolite facies conditions at P=0.34-0.91 GPa and T=427-532°C.In addition,results of the elemental contents(i.e.,La,Ce,Th andΣREE)and ratios(i.e.,Eu/Eu^(*)and La_(N)/Yb_(N))suggest that the protoliths of the metasedimentary rocks were mainly shales,wackes and limestones,most probably related to the Rodinia supercontinent rifting along the northern margin of the Yangtze Block during the Neoproterozoic. | WU Zheng YANG Yang LIU Yican ZHANG Chengwei | 2023 | Acta Geologica Sinica(English Edition)2023，97，5： | 1 |
| 15 | The dual functional lithium lead test blanket module and the testing strategy for ITER显示文摘 | Wu Yican Wang Weihua Liu Songlin | 2005 | Chinese Journal of Nuclear Science and Engineering2005，25，4： | 1 |
| 16 | Multistage Metamorphic Evolution and P-T-t Path of High-T Eclogite from the North Dabie Complex Zone during Continental Subduction and Exhumation显示文摘Objective High-T eclogites from the North Dabie complex zone(NDZ),central China underwent a complex metamorphic evolution involved in ultrahigh-pressure(UHP)and highpressure eclogite-facies metamorphism,and | LIU Yican DENG Liangpeng GU Xiaofeng GROPPO Chiara ROLFO Franco | 2016 | Acta Geologica Sinica(English Edition)2016，90，2： | 1 |
| 17 | Effects of retrograde-zoning of garnet on Sm-Nd isotopic dating of eclogite and oxygen isotopic disequilibrium between eclogitic minerals显示文摘 | Shuguang Li Liu Yican Shutong Xu Yongfei Zheng | 2002 | Science in China Series B: Chemistry2002，，1： | 1 |
| 18 | The diamond from the ultrahigh-pressure metamorphic rocks of eastern Dabie Mountains 显示文摘 | 1991 Xu Shutong Su Wen and Liu Yican | 1991 | Chinese Science Bulletin1991，36，7： | 1 |
| 19 | The dual functional lithium lead test blanket module and the testing strategy for ITER显示文摘 | WU Yican WANG Weihua LIU Songlin | 2005 | Chinese Journal of Nuclear Science and Engineering2005，25，4： | 1 |
| 20 | Exhumation of deeply subducted crust:Review and outlook显示文摘The discovery of ultrahigh-pressure(UHP)index minerals such as coesite and micro-diamond in supracrustal rocks indicate that a large amount of crustal rocks were subducted to mantle depths and subsequently returned to the Earth’s surface.However,exhumation mechanism of the deeply subducted crustal rocks has been a hot topic in geodynamic community and remains controversial.Previous studies have been performed by petrologic observations,analogue experiments and numerical simulations for exhumation processes and mechanisms of deeply subducted crustal rocks,and a series of important results have been achieved.In this paper,we summerize in detail recent progresses and existing problems on types of subduction zones,exhumation processes and mechanisms of deeply subducted crustal rocks,and related factors.Based on these,three forthcoming prospects are presented:(1)The geological processes within the exhuming crust;(2)the interaction between the exhuming crust and the surface process;(3)the interaction between the exhuming crust and the mantle. | Yican Liu Chengwei Zhang | 2020 | Science China Earth Sciences2020，63，12： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员