Results 1 to 10 of about 114 (105)

Evidence for Low‐Pressure Crustal Anatexis During the Northeast Atlantic Break‐Up [PDF]

Geochemistry, Geophysics, Geosystems
While basaltic volcanism is dominant during rifting and continental breakup, felsic magmatism may be a significant component of some rift margins. During International Ocean Discovery Program (IODP) Expedition 396 on the continental margin of Norway, a ...
A. M. Morris, S. Lambart, M. A. Stearns, J. R. Bowman, M. T. Jones, G. Mohn, G. Andrews, J. Millett, C. Tegner, S. Chatterjee, J. Frieling, P. Guo, D. W. Jolley, E. H. Cunningham, C. Berndt, S. Planke, C. A. Alvarez Zarikian, P. Betlem, H. Brinkhuis, M. Christopoulou, E. Ferré, I. Y. Filina, D. T. Harper, J. Longman, R. P. Scherer, N. Varela, W. Xu, S. L. Yager, A. Agarwal, V. J. Clementi   +29 more
doaj   +6 more sources

Age of anatexis in the crustal footwall of the Ronda peridotites, S Spain [PDF]

Lithos, 2014
This study investigates the age of anatexis of a crustal sequence constituting the footwall of the Ronda peridotite slab, in the hinterland of the Betic Cordillera (S Spain, region of Istán). These rocks represent a polymetamorphic basement involved in the Alpine orogeny and show an increase in the proportion of melt towards the peridotites ...
Lucie Tajčmanová, Antonio Acosta-Vigil, Omar Bartoli   +2 more
exaly   +5 more sources

Behavior of apatite in granitic melts derived from partial melting of muscovite in metasedimentary sources

China Geology, 2021
: Fluid-absent and fluid-fluxed melting of muscovite in metasedimentary sources are two types of crustal anatexis to produce the Himalaya Cenozoic leucogranites.
Li-E Gao, Ling-sen Zeng, Ling-hao Zhao, Jia-hao Gao, Zhen Shang   +4 more
doaj   +1 more source

Geochemistry of the Precambrian Basement of the Bamenda massif of southeastern Nigeria: petrogenesis and tectonic setting

Geologica Acta, 2020
Trace and Rare-Earth element geochemical study of twenty samples of migmatitic banded gneisses, garnet biotite schists, dolerites, granites and rhyolites was carried out in a bid to determine their petrogenetic and tectonic significance in the evolution ...
C.U. Ibe
doaj   +3 more sources

Genesis of the Eastern Adamello Plutons (Northern Italy): Inferences for the Alpine Geodynamics

Geosciences, 2021
The Corno Alto–Monte Ospedale magmatic complex crops out at the eastern border of the Adamello batholith, west of the South Giudicarie Fault (NE Italy).
Alessio Relvini, Silvana Martin, Bruna B. Carvalho, Giacomo Prosser, Luca Toffolo, Patrizia Macera, Omar Bartoli   +6 more
doaj   +1 more source

New Insight From the First Application of Ti-in-Quartz (TitaniQ) Thermometry Mapping in the Eastern Khondalite Belt, North China Craton

Frontiers in Earth Science, 2022
The thermal regime of the lower crust is a critical factor that controls crustal anatexis, high-grade metamorphism, and granite formation, which finally results in crustal differentiation.
Yuanyuan Zheng, Yuanyuan Zheng, Yuanyuan Zheng, Yang Qi, Yang Qi, Yang Qi, Di Zhang, Di Zhang, Shujuan Jiao, Shujuan Jiao, Guangyu Huang, Guangyu Huang, Jinghui Guo, Jinghui Guo   +13 more
doaj   +1 more source

In-situ boron isotope and chemical composition of tourmaline in the Gyirong pegmatite, southern Tibet: Implications for petrogenesis and magma source

Frontiers in Earth Science, 2023
Leucogranitic rocks, mainly including leucogranite-pegmatite systems, have been found to be widely distributed in the South Tibetan Himalaya, and they have received considerable interest because of their significance in crustal evolution and associated ...
Qiuming Pei, Shaobing Ma, Chenghong Li, Fei Liu, Yunhui Zhang, Yong Xiao, Shiming Wang, Jianfei Wu, Huawen Cao   +8 more
doaj   +1 more source

Fertility of crustal rocks during anatexis [PDF]

Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 1996
ABSTRACT:After many years of systematic experimental investigations, it is now possible to quantify the conditions for optimum fertility to melt production of most common crustal rock types as functions of temperature andto about 30 kbar pressure. Quartzo-feldspathic melting produces steady increases in melt proportion with increasing temperature.
openaire   +2 more sources

U-Pb (LA-ICPMS) zircon ages and Nd isotopes for granitoids of the Tamboril-Santa Quitéria Complex, Ceará Central Domain: implication for neoproterozoic syncollisional magmatism in north Borborema Province [PDF]

Geologia USP. Série Científica, 2013
The Tamboril-Santa Quitéria Complex (TSQC) is one of the largest Neoproterozoic plutonic manifestations in the northBorborema Province (NE Brazil). It represents an anatectic/igneous association characterized by a number of magmaticpulses that occurred ...
Felipe Grandjean da Costa, Carlos Eduardo Ganade de Araújo, Wagner da Silva Amaral, Antonio Maurilio Vasconcelos, Joseneusa Brilhante Rodrigues   +4 more
doaj   +1 more source

Paleozoic high-temperature metamorphism and deformation related to Proto-Tethys closure and Paleo-Tethys opening in the north of Central-East Iranian Microcontinent, based on the mineralogy of Airakan metagranite [PDF]

پترولوژی, 2023
Granites are one of the most abundant rock groups formed the continental crust, and are considered for investigating the temperature conditions of their formation and metamorphism. Thus, they are a unique window to magmatism and tectonic evolution of the
Nargess Shirdashtzadeh
doaj   +1 more source