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Pei-yuan Hu
Northwest University (United States)
14Publications
6H-index
175Citations
Publications 14
Newest
#1Wei Wang (JLU: Jilin University)H-Index: 10
#2Ming Wang (JLU: Jilin University)H-Index: 14
Last.An-Bo Luo (JLU: Jilin University)H-Index: 1
view all 8 authors...
Abstract The transition from oceanic subduction to continental collision is a key stage in the evolution of ancient orogens. We present new data for Early Cretaceous diorite and granite porphyry from north–central Tibet to constrain the evolution of the Bangong–Nujiang Tethyan Ocean (BNTO). The diorites have moderate SiO2 and high MgO contents, similar to high-Mg andesites. Zircon grains yield U–Pb ages of 128–124 Ma and positive eHf(t) values between +13.2 and + 16.3, corresponding to Hf deplet...
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#1Pei-yuan Hu (Northwest University (United States))H-Index: 6
#2Qing-guo Zhai (Ontario Ministry of Natural Resources)H-Index: 3
Last.Hao Wu (Ontario Ministry of Natural Resources)H-Index: 2
view all 7 authors...
Abstract It was commonly accepted that the North Lhasa terrane of the present-day central Tibetan Plateau in Asia came from the northern Gondwana, but the timing of its northward drifting away from the Gondwana remains controversial. Here we present for the first time U–Pb age and Hf isotope data on detrital zircons from the Cambrian metasedimentary rocks in the North Lhasa terrane. The detrital zircons display age peaks at ca. 505, 548, 926, and 1104 Ma, and are interpreted to have Gondwanan so...
Source
#1Pei-yuan Hu (Northwest University (United States))H-Index: 6
#2Qing-guo Zhai (Ontario Ministry of Natural Resources)H-Index: 3
Last.Zhi-qiang Huang (Ontario Ministry of Natural Resources)
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Abstract The North Lhasa terrane in Tibet is generally interpreted to be paleotectonically unrelated to the East African Orogen (EAO) and is instead thought to have derived from northeastern India or northwestern Australia. In this study, we present petrogenetic and geochronological results pertaining to the analysis of gabbros (ca. 652 Ma), diorites (ca. 658 and 646 Ma), and tonalites (ca. 652 Ma) from the North Lhasa terrane. The gabbros are calc-alkaline and exhibit arc-like geochemical featu...
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#1Pei-yuan Hu (Northwest University (United States))H-Index: 6
#2Qing-guo Zhai (Ontario Ministry of Natural Resources)H-Index: 3
Last.Hao Wu (Ontario Ministry of Natural Resources)H-Index: 2
view all 9 authors...
Abstract The origin and evolution of the Precambrian North Lhasa Terrane in the central Tibetan Plateau remain enigmatic. Here we present U Pb age and Hf isotopic data for detrital zircons from early Neoproterozoic quartzites in the North Lhasa Terrane, Tibet. An integrated petrological, geochronological, geochemical, and Sr–Nd–Hf isotopic study was also undertaken on amphibolites associated with the quartzites. The depositional age of the quartzites is constrained to be between ca. 931 Ma (youn...
4 CitationsSource
#1Pei-yuan Hu (Northwest University (United States))H-Index: 6
#2Qing-guo Zhai (Ontario Ministry of Natural Resources)H-Index: 3
Last.Hao Wu (Ontario Ministry of Natural Resources)H-Index: 2
view all 7 authors...
Abstract The North and South Lhasa terranes in the central Tibetan Plateau were traditionally considered to be one block in the Precambrian and originate from the northeastern India or northern Australia. In this contribution, we report Middle Neoproterozoic (ca. 760 Ma) gabbros in the North Lhasa terrane. The gabbros can be subdivided into two groups. The group-1 gabbros (ca. 766 Ma) are calc-alkaline and exhibit arc-like geochemical features. They have high ISr (0.708 to 0.710) and low zircon ...
5 CitationsSource
#1Pei-yuan Hu (Northwest University (United States))H-Index: 6
#2Qing-Guo ZhaiH-Index: 16
Last.Ke-jun HouH-Index: 2
view all 6 authors...
Abstract The origin of ancient continental blocks in the Tibetan plateau and their paleogeographic locations in the Rodinia supercontinent remain enigmatic. Here, we report the early Cryogenian metamorphic magmatic rocks (including amphibolites and granitic gneisses) from the North Lhasa terrane of the central Tibetan Plateau. The amphibolites (ca. 822 Ma) are tholeiitic and exhibit both MORB- (e.g., flat patterns of rare-earth and high field strength elements) and arc-like (e.g., elevated Th/Yb...
11 CitationsSource
#1Pei-yuan HuH-Index: 6
#2Qing-Guo ZhaiH-Index: 16
Last.Yue TangH-Index: 6
view all 5 authors...
ABSTRACTThe Early Palaeozoic was an important period in the geologic evolution of the South China block (SCB), marking the intracontinental orogen in the Wuyi-Yunkai region. One salient feature of the western SCB is the absence of Early Palaeozoic oceanic subduction-related magmatism. Here, we report the first known occurrence of Late Ordovician andesites from the Shimian area, western SCB. Zircon SHRIMP U–Pb dating reveals that the andesites formed at ca. 451 Ma. They have geochemical features ...
4 CitationsSource
#1Pei-yuan Hu (Northwest University (United States))H-Index: 6
#2Qing-Guo ZhaiH-Index: 16
Last.Ke-jun HouH-Index: 2
view all 6 authors...
Abstract The origin of the North Lhasa terrane in Tibet remains enigmatic. Our study reports the first evidence for Ediacaran magmatic rocks, including gabbros (ca. 572 Ma), tonalites (ca. 568 Ma), and rhyolites (ca. 547–541 Ma), in the North Lhasa terrane, Tibet. Gabbros are calc–alkaline and exhibit arc-like (e.g., enrichments of Rb and Pb and depletions of Nb, Ta, P, and Ti) geochemical affinities. These gabbros have variable zircon e Hf (t) values (−5.5 to +0.9) and they are probably derived...
10 CitationsSource
#1Pei-yuan HuH-Index: 6
#2Qing-Guo ZhaiH-Index: 16
Last.Guang-ming RenH-Index: 2
view all 5 authors...
Abstract The Shimian mafic-ultramafic rocks in the western Yangtze Block is a structurally dismembered complex which is intruded by the Neoproterozoic granite and faulted against the Neoproterozoic Suxiong Group. In this study, we divide the Shimian mafic-ultramafic rocks into two suites including the Late Mesoproterozoic Shimian ophiolite and Early Neoproterozoic gabbros, based on differences in the field occurrence, age, and geochemical characteristics. The Late Mesoproterozoic Shimian ophioli...
9 CitationsSource
#1Qing-Guo ZhaiH-Index: 16
#2Jun WangH-Index: 141
Last.Sun-Lin Chung (NTU: National Taiwan University)H-Index: 66
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Abstract The Longmu Co-Shuanghu suture zone in central Qiangtang, northern Tibetan plateau, is a segment of the main suture zone of the Paleo-Tethys Ocean. Numerous studies have focused on ophiolite and high-pressure metamorphic rocks from this suture zone, whereas the associated subduction-related magmatic rocks have received little attention. In this study, we present new data for the Late Paleozoic granitoids from the Gangma Co, Guoganjianian and Chasum areas along the Longmu Co-Shuanghu sutu...
4 CitationsSource
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