Mafic Rock - an overview | ScienceDirect Topics
1999年6月8日 · Mafic rocks contain glaucophane and epidote in the bluschist facies. Glaucophane is an alkali-amphibole that is dark or blue in hand specimen and colourless to …
Geochemistry and origin of the Late Carboniferous ultramafic, …
2024年9月1日 · During the generation of the mafic appinitic part, the residual magma was enriched in felsic elements along with hydrous fluids, and consequently, plagioclase and minor …
Mafic magmatic enclaves and mafic rocks associated with some …
2005年3月1日 · Considering that mafic dikes in the Sierra Nevada batholith may represent the mafic magma from which the MME were derived, isotopic systematics indicate that, through …
Geochemical characteristics of mafic and ultramafic rocks from the …
2018年3月1日 · The mafic cumulate layered gabbro and its derivatives are seen as isolated patches and hills along the course of the Tizu river and in an around the Moki village (Fig. 2 c). …
Origin of mafic microgranular enclaves (MMEs) and their host …
2013年2月1日 · Mafic microgranular enclaves are commonly present in Muchen pluton, South China. The consistency of ages implies the quartz monzonites and MMEs were coeval. Mafic …
Paleolatitude of Mafic Dykes in the Xiugugabu ophiolite: …
2024年10月22日 · The mafic dykes in the Xiugugabu ophiolite are believed to have formed in an SSZ setting, with country rocks consisting of harzburgites representing fragments of the …
Chemical geodynamics of mafic magmatism above subduction …
2020年6月1日 · Mafic magmatism above oceanic and continental subduction zones proceeds in two-stage processes. •. Crustal signatures are transferred by liquid phases into the mantle …
On the origin of high-pressure mafic granulite in the Eastern …
2022年4月1日 · The mafic granulite (samples 45-1 and 45-5) and hosting leucosome (sample 97-12) studied in this work were collected from the core of a thick (~30 m wide) layer of garnet …
How mafic is the lower continental crust? - ScienceDirect
1998年9月1日 · The lower crust formed by basaltic underplating, as represented by mafic granulite xenoliths, also exhibits a significant positive Eu/Eu * anomaly, which is 1.23 for the …
Mafic granulite rheology: Implications for a weak continental lower ...
2012年11月1日 · The mafic granulite (0.16–0.28 wt% water) explored here is more than one order of magnitude weaker than the dry upper mantle. This rheological contrast between a weak …