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| 1 | Isotope Chronology and Geochemistry of the Lower Carboniferous Granite in Xilinhot, Inner Mongolia, China显示文摘Geochronological and geochemical analyses were performed on K-feldspar granites and monzonitic granites from the Xilinhot area, Inner Mongolia, China. Zircon U/Pb ages indicate that the two types granites were emplaced during the Lower Carboniferous. The K-feldspar granites(332 Ma) have the typical A-type granite characteristics of a post-collision setting. The monzonitic granites have an emplacement age of 323 Ma. Zircon εHf values of the former range from +12.8 to +14.2, with an average T_(DM2) of 453 Ma. The latter have lower zircon ε_(Hf) values, ranging from +5.4 to +10.7, with an average T_(DM2) of 798 Ma. The strong, positive ε_(Hf) values of the zircon indicate that both sets of samples are from a juvenile crust formed in an oceanic crust subduction stage, although the monzonitic granite may have undergone a hybridization of crustal materials. These results indicate a younger post orogenic event. The Paleo-Asian Ocean had closed before the Early Carboniferous and the Xilinhot area started its post-orogenic evolution with an extensional tectonic environment during the Early Carboniferous. | Xiaocheng Zhao Wenxiao Zhou Dong Fu Bo Huang Mengchun Ge | 2018 | Journal of Earth Science2018，29，2： | 8 |
| 2 | Endoscopic band ligation of small gastric stromal tumors and follow-up by endoscopic ultrasonography显示文摘 | Siyu Sun Nan Ge Caixia Wang Mengchun Wang Qingjie Lü | 2007 | Surgical Endoscopy2007，，4： | 1 |
| 3 | Endoscopic band ligation of small gastric stromal tumors and follow-up by endoscopic ultrasonography显示文摘 | Siyu Sun Nan Ge Caixia Wang Mengchun Wang Qingjie Lü | 2007 | Surgical Endoscopy2007，，4： | 1 |
| 4 | Endoscopic band ligation of small gastric stromal tumors and follow-up by endoscopic ultrasonography显示文摘 | Siyu Sun Nan Ge Caixia Wang Mengchun Wang Qingjie Lü | 2007 | Surgical Endoscopy2007，，4： | 1 |
| 5 | Stratigraphic Sequence and Tectonic Evolution of Passive Continental Margin of Jinshajiang Belt in Northwestern Yunnan, China显示文摘The Jinshajiang belt, located between the Zhongzan and Qamdo massifs, preserves varied sediments representing different tectonic background. Those sediments outcrop in stratigraphic slices,not in continuous stratigrapky. The stratigraphic slices of the passive continental margin are investigated by geologic mapping in Tuediug-Xiaruo, Northwestern Yunnan Province, and each of these slices is researched in age and sedimeutary environment. The stratigraphic successions of the passive continental margin are reconstructed. On the basis or new sequence, the evolutional history of the passive continental margin is divided into four stages: rift basin (D,-C,), complex continental margin basin (P1 ), residual hasin (P2-T2) and synorogenic basin (T3). | Feng Qinglai Ge Mengchun Xie Defan Zhang Shitao Jiang Yuansheng Liu Yuchun(Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074) | 1999 | Journal of Earth Science1999，18，3： | 0 |
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