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References (17)
-
Jiamin (1994)
Velocity structure of the crust in the Eastern Qinling MountainsJ. Chengdu Institute of Technology, 21
-
Nd and Sr isotope evidence from Caledonian granites. E a h Planet -
(1994)
Geochemical Study of the Lithosphere, Tectonism and Metallogenesis in the Qinling-Dabashan Region -
(1985)
Granites of Shaanxi Province. Xi’an: Xi’an -
(1983)
The age and nature of basement of Southern Britain: evidence Shang Ruiyun and Yan Zhen -
(1993)
Tri-dimensional topological diagrams of ore lead isotopes and their application to the division of geochemical provinces and mineralization -
(1993)
Tri-dimensional topological diagrams of ore lead isotopes and their application to the division of geochemical provinces and mineralization. Geochemica -
J. Clayburn (1988)
The crustal evolution of Central Scotland and the nature of the lower crust: Pb, Nd and Sr isotope evidence from Caledonian granitesEarth and Planetary Science Letters, 90
-
Continental crust subduction and collision along Shangdan tectonic belt of East Qinling, China: evidence for Pb -
陈永宁, 李文安 (1993)
De novo Flower-bud Differentiation in Tissue Culture of Marigold, Violet Orychophragmus and TobaccoChinese Science Bulletin, 38
-
(1985)
Granites of Shaanxi Province. Xi'an: Xi'an University of Traffic Press -
(1988)
Feldspar Pb and ore Pb isotopic compositions and their significance -
Zhang Hongfei, Zhao Benren (1996)
Continental crust subduction and collision along Shangdan Tectonic Belt of East Qinling, China——Evidence from Pb, Nd and Sr isotopes of granitoidsScience China-earth Sciences, 39
-
(1994)
Velocity structure of the crust in the Eastern Qinling Clayburn -
C. Hampton, P. Taylor (1983)
The age and nature of the basement of southern Britain: evidence from Sr and Pb isotopes in granitesJournal of the Geological Society, 140
-
(1993)
Pb isotope composition of feldspar of granitoid in eastern China and division of Pb isotope provinces -
W. Huang, Z. Wu (1992)
Evolution of the Qinling Orogenic BeltTectonics, 11
- Publisher
- Wiley
- Copyright
- 1997 Geological Society of China
- ISSN
- 1000-9515
- eISSN
- 1755-6724
- DOI
- 10.1111/j.1755-6724.1997.tb00357.x
- Publisher site
- See Article on Publisher Site
Abstract
This paper reports 48 feldspar lead isotope analyses from 27 granitic intrusions, which formed from the Late Proterozic to Mesozoic within the Eastern Qinling oregenic belt. It is found that the granitic rocks of South Qinling are characterized by a strong block–effect and depletion in U–Pb and Th–Pb, showing that these rocks came from the same lead isotope tectono–geochemical province, while those of North Qinling are characterized by higher U–Pb and Th–Pb for Late Proterozoic to Early Paleozoic ones and lower U–Pb and Th–Pb for Late—Palaeozoic and younger ones in their feldspar lead isotopic composition. In the North Qinling block, lead isotopic signatures reflect that the source of granitic magma had changed since the Late Palaeozoic. Comparison of feldspar lead isotopic composition between South Qinling and North Qinling shows that there is marked difference in lead isotopic composition for pre–Palaeozoic granitoids, indicating that the South Qinling and the North Qinling blocks belong to different tectonic units, but the similarities in lead isotopic composition are quite clear, which indicates that the South Qinling block had been welded with the North Qinling block and that the magma sources of both blocks were identical. The analysis provides direct evidence for underplating of the continental crust of South Qinling beneath the North Qinling block in the continent–continent interaction stage of the Eastern Qinling oregenic belt.
Journal
Acta Geologica Sinica (English Edition) – Wiley
Published: Jun 1, 1997