By Meiling Wu
Focusing on problems with whilst and the way Archean crust within the craton used to be shaped, this PhD thesis booklet provides significant study results of box established metamorphic, geochemical and geochronological investigations on Meso-Neoarchean basement rocks from Shandong Province within the jap Block of the North China Craton. in response to significant findings and new information, the writer proposes that the formation and evolution of Archean crust used to be ruled by means of mantle plumes, no longer by way of plate tectonics. As one of many oldest cratonic blocks on the planet containing rocks as previous as 3.85 billion years, the formation and evolution of North China Craton remains to be arguable. for that reason this booklet may be of worth to someone drawn to the evolution of cratonic blocks and Precambrian geology.
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Extra info for Ages, Geochemistry and Metamorphism of Neoarchean Basement in Shandong Province: Implications for the Evolution of the North China Craton
Petrology and metamorphism of khondalites from the Jining complex, North China Craton. International Geology Review, 53, 212–229. , & Liu, Y. (2012). 8 Ga) crustal growth of the North China Craton revealed by zircon Hf isotope: A synthesis. Geoscience Frontiers, 3, 147–173. , Wilde, S. , et al. (2012). Petrogenesis and geochronology of Precambrian granitoid gneisses in Western Liaoning Province: Constraints on Neoarchean to early Paleoproterozoic crustal evolution of the North China Craton. Precambrian Research, 222–223, 290–311.
However, previous studies on metamorphic P–T conditions and P–T paths of the A-type maﬁc granulites from the Western and Eastern Blocks were based on calculations of inconsistent or out-of-date traditional geothermobarometry. 1 Research Background and Objectives 7 Therefore, it still remains unclear whether these anticlockwise P–T paths really reflect the metamorphic evolution of the A-type maﬁc granulites in the NCC or are just artifacts of the traditional geothermobarometers. Several A-type maﬁc granulites with good preservation of mineral reaction textures have been found in the Yishui Terrane, which are suitable for P–T estimations and P–T path reconstruction, and the results will help to understand the tectonothermal evolution of the Eastern Block of the North China Craton.
Wu, J. (1996). 3800 to 2500 Ma crustal evolution in the Anshan area of Liaoning Province, northeastern China. Precambrian Research, 78, 79–94. Tam, P. , Zhao, G. , Liu, F. , Zhou, X. , & Li, S. Z. (2011). SHRIMP U-Pb zircon ages of high-pressure maﬁc and pelitic granulites and associated rocks in the Jiaobei massif: Constraints on the metamorphic ages of the Paleoproterozoic Jiao-Liao-Ji Belt in the North China Craton. Gondwana Research, 19, 150–162. Tam, P. , Zhao, G. , Liu, F. , Zhou, X. , & Li, S.
Ages, Geochemistry and Metamorphism of Neoarchean Basement in Shandong Province: Implications for the Evolution of the North China Craton by Meiling Wu