Results 161 to 170 of about 49,268 (212)

Multidisciplinary approaches to lithological discrimination and structural mapping for mineral resource assessment. [PDF]

open access: yesSci Rep
Elfadly MA   +8 more
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Prolonged basaltic magmatism and short-lived magmatic sulfide mineralization in orogenic belts

Lithos, 2021
Abstract Economically important Ni-Cu sulfide deposits occur in orogenic belts worldwide. However, the duration of timing and geological processes critical for generation of high-Mg basaltic magma and Ni-Cu sulfide mineralization during orogeny have not been well addressed. Here, we report a detailed geochronological study on the Huangshan-Jingerquan
Xie-Yan Song   +8 more
openaire   +1 more source

Orogenic cyclicity and episodic tectono-magmatic processes in the formation of the Paleozoic northern Yili magmatic arc, Central Asian Orogenic Belt

Geological Society of America Bulletin, 2023
To understand the orogenic cyclicity that built the northern Yili magmatic arc in the southern Balhkash-Yili arc of the Central Asian Orogenic Belt, we synthesize its tectono-magmatic processes using new and existing U-Pb geochronological dates (228), Hf-in-zircon (1605 spots), bulk-rock geochemical data (1458), and Sr-Nd isotopic analyses (461) of ...
Xiaobo Zhao   +3 more
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Neoproterozoic, Paleozoic, and Mesozoic granitoid magmatism in the Qinling Orogen, China: Constraints on orogenic process

Journal of Asian Earth Sciences, 2013
Abstract The Qinling Orogen is one of the main orogenic belts in Asia and is characterized by multi-stage orogenic processes and the development of voluminous magmatic intrusions. The results of zircon U–Pb dating indicate that granitoid magmatism in the Qinling Orogen mainly occurred in four distinct periods: the Neoproterozoic (979–711 Ma ...
Tao Wang, Chengli Zhang
exaly   +2 more sources

Recycling reduced iron at the base of magmatic orogens

Earth and Planetary Science Letters, 2019
Abstract The Earth's continental crust is thought to originate from melting of the mantle, but it is too felsic and depleted in Fe relative to a primary mantle melt. This depletion in Fe is also commonly found in continental arc magmas and is often attributed to magnetite crystallization.
Ming Tang   +3 more
openaire   +1 more source

Alkali-calcic and alkaline post-orogenic (PO) granite magmatism: petrologic constraints and geodynamic settings

open access: yesLithos, 1998
The end of an orogenic Wilson cycle corresponds to amalgamation of terranes into a Pangaea and is marked by widespread magmatism dominated by granitoids.
Abla Azzouni-Sekkal   +2 more
exaly   +2 more sources

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