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Bei Xu
Peking University
42Publications
19H-index
2,068Citations
Publications 43
Newest
Abstract Based on sedimentological, geochronological and geochemical investigations, a Paleozoic orogenic belt, called the Heihe-Dashizhai orogenic belt (HDOB), has been recognized, which consists of three tectonic units: Duobaoshan-Dashizhai arc belt, Wolihe back-arc basin and Sankuanggou-Jinshuishan molasse basin, representing a northwesternward subduction system of the Heihe-Nenjiang Ocean (HNO) between the Xing'an-Airgin Sum Block (XAB) and the Songliao-Hunshandake Block (SHB) in Great Xing'...
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#1Xiaoping Long (Northwest University (United States))H-Index: 32
#2Bei Xu (PKU: Peking University)H-Index: 19
Last.Lei Zhang (Northwest University (United States))H-Index: 1
view all 5 authors...
Abstract Neoproterozoic metavolcanic-sedimentary sequences are well preserved along the southwestern margin of Tarim Craton, NW China. In order to constrain the depositional timing of the metasedimentary sequences and better understand the crustal evolution, we present new detrital zircon U–Pb ages and Hf isotopic data for the Neoproterozoic metasediments collected from the eastern Aliankate Group in the southwestern Tarim Craton (STC). The detrital zircons are characterized by high Th/U ratios,...
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#1Jinlong Dong (PKU: Peking University)H-Index: 1
#2Shuguang Song (PKU: Peking University)H-Index: 35
Last.Bei Xu (PKU: Peking University)H-Index: 19
view all 7 authors...
Abstract The North-South Gravity Lineament (NSGL) is an important geophysical boundary within NE China. Gravity anomaly, heat flow, crustal and lithospheric thickness, terrain and altitude all change dramatically across the NSGL. However, the timing of onset of the NSGL remains enigmatic, and the Mesozoic lithospheric thinning mechanism to the east of the NSGL is still unclear in NE China. Here we study a Late Jurassic bimodal volcanic suite located on the NSGL including N-MORB-like basalts, whi...
1 CitationsSource
#1Qiang Ren (China University of Geosciences)H-Index: 1
#2Shihong Zhang (China University of Geosciences)H-Index: 13
Last.Onongoo TomurtogooH-Index: 1
view all 13 authors...
1 CitationsSource
#1Bin Xia (PKU: Peking University)H-Index: 7
#2Lifei Zhang (PKU: Peking University)H-Index: 42
Last.Bei Xu (PKU: Peking University)H-Index: 19
view all 4 authors...
Abstract The first occurrence of blueschist in the Neoproterozoic signifies a transition in thermal regime from a warmer Archean–Proterozoic Earth to modern colder subduction characterized by blueschist facies or ultrahigh pressure metamorphism. To evaluate the thermal regime of the transition, we apply phase equilibrium modeling to the Aksu blueschist in northwestern China to constrain the pressure ( P ) and temperature ( T ) conditions of the peak mineral assemblages and to calculate the therm...
4 CitationsSource
#1Jinlong Dong (PKU: Peking University)H-Index: 1
#2Shuguang Song (PKU: Peking University)H-Index: 35
Last.Bei Xu (PKU: Peking University)H-Index: 19
view all 8 authors...
The Xing’an-Inner Mongolia accretionary belt in the eastern Central Asian Orogenic Belt (CAOB) was produced by the subduction of three oceanic plates: the Paleo-Asian, Mongol-Okhotsk and Paleo-Pacific oceanic plates. The interactions between these plates remain unclear. Here we report an Alaskan-type ultramafic-mafic intrusion in the Kedanshan area, central Inner Mongolia, China. The main lithologies of this intrusion include cumulate dunite, pyroxene peridotite, olivine pyroxenite and cumulate ...
1 CitationsSource
#1Pan Zhao (NTU: National Taiwan University)H-Index: 11
#2Bor-ming Jahn (NTU: National Taiwan University)H-Index: 81
Last.Bei Xu (PKU: Peking University)H-Index: 19
view all 3 authors...
The Sikhote-Alin Orogenic Belt in Russian Far East is an important Late Mesozoic to Early Cenozoic accretionary orogen related to the subduction of the Paleo-Pacific Plate. This belt was generated by successive accretion of terranes made of accretionary prisms, turbidite basins and island arcs to the continental margin of northeastern Asia (represented by the Bureya-Jiamusi-Khanka Block) from Jurassic to Late Cretaceous. In order to study the tectonic and crustal evolution of this orogenic belt,...
10 CitationsSource
#1Chong-Jin Pang (Guilin University of Technology)H-Index: 7
#2Xuan-Ce Wang (Chang'an University)H-Index: 29
Last.Yi-Zhi Liu (Guilin University of Technology)H-Index: 1
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Abstract The role of fluids in the formation of the Permian-aged Xigedan and Mandula gabbroic intrusions in western Inner Mongolia was significant to the evolution of the Xing’an Mongolia Orogenic Belt (XMOB), and the active northern margin of the North China Craton (NCC). Secondary Ion Mass Spectroscopy (SIMS) U-Pb zircon geochronology establishes that the Xigedan gabbroic intrusion in the northern NCC was emplaced at 266 Ma, and is therefore slightly younger than the ca 280 Ma Mandula gabbroic...
5 CitationsSource
#1Wen Liao (PKU: Peking University)H-Index: 4
#2Bei Xu (PKU: Peking University)H-Index: 19
Last.Qunsheng LiH-Index: 1
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Abstract The Early Devonian bimodal volcanic sequence is firstly recognized in the Xilinhot area, central Inner Mongolia (North China). Zircon U-Pb dating of rhyolitic sample gives crystallization age of 407 ± 2 Ma, which is interpreted as the extrusive age of this bimodal volcanic sequence. Basaltic samples belong to tholeiite series whereas rhyolitic samples are peraluminous. Basaltic rocks show typical N-MORB-like REE and trace elemental patterns, with depletion of LREEs and negligible anomal...
6 CitationsSource
#1Pan Zhao (NTU: National Taiwan University)H-Index: 11
#2Bei Xu (PKU: Peking University)H-Index: 19
Last.Bor-ming Jahn (NTU: National Taiwan University)H-Index: 81
view all 3 authors...
Abstract Northeastern Mongolia represents a unique area that experienced evolution of both the Mongol-Okhotsk Ocean (MOO) and the Central Asian Orogenic Belt (CAOB). In order to better understand the evolution of MOO and its effect on the CAOB, we performed zircon U-Pb dating and Hf isotope, and whole-rock elemental and Sr-Nd isotopic analyses on three Permian peraluminous granitic plutons in northeastern Mongolia. Zircon dating result revealed that granitoids of East Monhhaan, South Monhhaan an...
9 CitationsSource
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