3篇
您的检索式：作者名="ZHANGFuqing"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Emplacement age and tectonic implications of the Xilinhot A-type granite in Inner Mongolia, China显示文摘A new rock type of granite, approximate 45 km2 in area and located about 10 km south of Xilinhot, Inner Mongolia, was found in the Sunitezuoqi (or called Su-zuoqi)-Xilinhot tectonic belt and identified as an A-type mia- rolitic intrusion. The pluton has miarolitic structure and is composed chiefly of perthite, quartz, euhedral albite and potassium feldspar. Various types of textures occur in the pluton, such as perthitie, graphic and myrmekite textures. Only quartz is found in miarolitic cavity. This A-type granite with seagull-shaped REE patterns and obvious negative Eu anomaly (d Eu = 0.24—0.28) is high in SiO2 (76%—77%), K and Na (Na2O + K2O = 7.75%—8.15%) and low in Ca (CaO = 0.20%—0.22%), Fe and Mg. Both petrographical observa-tions and chemical compositions indicate that it is an A-type granite. Zircon SHRIMP U-Pb analyses indicate that this A-type granite was emplaced at 276 2 Ma and coeval with the same type of granites in the adjacent areas. Therefore, it suggests that this pluton was likely formed in a post-orogenic extensional setting and probably related to break-off of sub-ducted slabs in Central Asian Orogenic Belt (CAOB), which indicate that the Sunitezuoqi-Xilinhot belt was tectonically evolved into post-orogenic stage since early Permian. | SHIGuanghait MIAOLaicheng ZHANGFuqing JIANPing FANWeiming LIUDunyi | 2004 | Chinese Science Bulletin2004，49，7： | 68 |
| 2 | Zircon SHRIMP geochronology of the Xinkailing-Kele complex in the northwestern Lesser Xing'an Range, and its geological implications显示文摘Located in the eastern portion of the Xing'an-Mongolian Orogenic Belt (XMOB), the Xinkailing-Kele complex has previously been considered to be Precambrian metamorphic rocks, mainly according to its relatively high metamorphic grade. Our filed observation, however, revealed that the complex is composed mainly of metamorphic rocks (Kele complex), tectono-schists (“Xinkailing Group”),and granitoids (Xinkailing granitic complex). Dating on these rocks using advanced SHRIMP zircon U-Pb technique indicates that: (1) Biotite-plagioclase gneiss from the Kele complex has a protolith age of 337±7Ma (2σ) and a metamorphic age of 216±3Ma (2σ); (2) the tectono-schist of the “Xinkailing Group” gave a magmatic age of 292±6Ma (2σ), indicative of felsic volcanic protolith of the schist formed in Late Paleozoic time; and (3) the Menluhedingzi and Lengchuan granites of the Xinkailing granitic complex were emplaced at167±4 (20σ) and 164±4Ma (2σ), respectively. These results suggest that the Xinkailing-Kele complex is not Precambrian metamorphic rocks and the so-called Precambrian “Nenji-ang Block” does essentially not exist. In combination with regional geological data, we propose that the Kele metamorphic complex is likely related to a collisional tectonism that took place in Triassic lime, as indicted by its metamorphic age of 216±3Ma. The Xinkailing granitic complex was emplaced along the collisional zone during Mid-Jurassic time,likely in a post-orogenic or anorogenic setting. | MIAOLaicheng FAN,Weiming ZHANGFuqing LIUDunyi JIANPing SHIGuanghai TAOHua SHIYuruo | 2004 | Chinese Science Bulletin2004，49，2： | 58 |
| 3 | 显示文摘 | ZhangFuqing(张付清) LiuChunjun(李春俊) LiuHongying(刘宏英)etal | 1999 | 含能材料1999，7，4： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员