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secular change in ttg compositions implications for the evolution of archaean geodynamics开题资料.pdf


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secular change in ttg compositions implications for the evolution of archaean geodynamics开题资料.pdf
文档介绍:
Earth and Planetary Science Letters 505 (2019) 65–75
Contents lists available at ScienceDirect
Earth and Planetary Science Letters
www.elsevier.com/locate/epsl
Secular change in TTG compositions: Implications for the evolution
of Archaean geodynamics

T.E. Johnson a,b, , C.L. Kirkland a,1, N.J. Gardiner a,1,2, M. Brown c, R.H. Smithies d,
M. Santosh e,f
a School of Earth and Planetary Sciences, The Institute for Geoscience Research (TIGeR), Curtin University, GPO Box U1987, Perth WA 6845, Australia
b Center for Global Tectonics, State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan, Hubei Province,
430074, China
c Laboratory for Crustal Petrology, Department of Geology, University of Maryland, College Park, MD 20742-4211, USA
d Geological Survey of Western Australia, 100 Plain Street, East Perth, WA 6004, Australia
e Centre for Tectonics, Resources and Exploration, Department of Earth Sciences, University of Adelaide, SA 5005, Australia
f School of Earth Sciences and Resources, China University of Geosciences, 29 Xueyuan Road, Beijing 100083, China
a r t i c l e i n f o a b s t r a c t
Article history: It is estimated that around three quarters of Earth’s first generation continental crust had been produced
Received 28 April 2018 by the end of the Archaean Eon, 2.5 billion years ago. This ancient continental crust is mostly composed
Received in revised form 5 October 2018 of variably deformed and metamorphosed magmatic rocks of the tonalite–trondhjemite–granodiorite
Accepted 15 October 2018
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