Phase equilibrium modelling and SHRIMP zircon U–Pb dating of medium-pressure pelitic granulites in the Helanshan complex of the Khondalite Belt, North China Craton, and their tectonic implications
Sign Up to like & getrecommendations! Published in 2018 at "Precambrian Research"
DOI: 10.1016/j.precamres.2018.05.030
Abstract: Abstract The Helanshan complex in the Khondalite Belt, North China Craton (NCC) is characterized by the occurrence of both medium-pressure (MP) and high-pressure (HP) pelitic granulites. This paper presents new results from phase equilibrium modelling… read more here.
Keywords: khondalite belt; equilibrium modelling; shrimp zircon; pelitic granulites ... See more keywords
Optimization for standard zircon U-Pb dating: Insight from high-temperature thermal annealing
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DOI: 10.1039/d3ja00407d
Abstract: The difference in radiation damage between unknown and reference zircons, the α-dose matrix effect, has been considered as a heavy influence on the accuracy and precision of zircon U-Pb dating... read more here.
Keywords: standard zircon; zircon; insight high; zircon dating ... See more keywords
LA-ICP-MS Zircon U-Pb Dating of Xinchong Syenogranite in Southwestern Fujian and Its Prospecting Significance
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DOI: 10.12677/ag.2017.73038
Abstract: 新冲正长花岗岩位于胡坊复式岩体东南缘，总体呈南西向展布，出露面积大于200 km2，岩性为肉红色斑状粗粒正长花岗岩。本文对新冲正长花岗岩样品进行了LA-ICP-MS锆石U-Pb测年，获得206U/236Pb加权平均年龄为222.0 ± 1.0 Ma (n = 24，MSWD = 0.53)，表明新冲正长花岗岩侵位时代为晚三叠世，是印支运动晚期岩浆活动的产物。通过对比，新冲正长花岗岩的侵位时代晚于志留纪侵位的胡坊花岗岩，表明胡坊复式花岗岩为志留纪和三叠纪岩浆活动的产物。对新冲正长花岗岩稀土元素分析，显示新冲正长花岗岩稀土总量较高，富集轻稀土元素La、Ce，具有寻找离子吸附型稀土矿的良好找矿前景，这对闽西南地区岩浆演化和找矿提供了重要新资料。 The Xinchong syenogranite is located at the southeastern portion of the Hufang Compound granite, which is mainly composed of meat red patchy, coarse-grained syenogranite, generally… read more here.
Keywords: icp zircon; xinchong syenogranite; syenogranite southwestern; dating xinchong ... See more keywords
Zircon U-Pb Dating, Geochemistry, Lu-Hf Isotope Characteristics, and Geological Significance of Volcanic Rocks in Zhenghe Fozi Mountain National Geopark, Fujian, China
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DOI: 10.3390/min14060616
Abstract: Fozi Mountain National Geopark is located in Zhenghe County in the northern region of Fujian Province, where the volcanic rocks of the Zhaixia Formation of the Shimaoshan Group are exposed. Zircon U-Pb dating and geochemical… read more here.
Keywords: volcanic rocks; mountain national; fozi mountain; zircon dating ... See more keywords
Chronology and Petrogenesis of the Yangjiayu Complex from Eastern China: Evidence from Zircon U–Pb Dating, Hf Isotopes, and Geochemical Characteristics
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DOI: 10.3390/min15030321
Abstract: This study examines the origin, tectonic setting, and Cu–Pb–Zn polymetallic mineralization of the Yangjiayu Complex, situated on the southwestern margin of the Jiaolai Basin. We present detailed geochemical, zircon U–Pb geochronological, and Hf isotopic data… read more here.
Keywords: yangjiayu complex; zircon dating; rhyolite porphyry;