Results 111 to 120 of about 45,840 (156)

Geochronology of the Gabbro–mafic Microgranular Enclaves–granite Associations in the Gejiu District, Yunnan Province and Their Geodynamic Significance

Acta Geologica Sinica, 2012
Abstract:Many igneous rocks distribute in Gejiu tin polymetallic ore‐field at Yunnan province, rocks including basalt, gabbro, mafic microgranular enclaves, granites (porphyritic granite and equigranular granite) and akaline rocks. The ages of the granites and akaline rocks which are considered to have genetic connecting with the mineralization have ...
Cheng, Yanbo, Mao, Jingwen
exaly   +4 more sources

Geochemistry of mafic microgranular enclaves in the Tamdere Quartz Monzonite, south of Dereli/Giresun, Eastern Pontides, Turkey

Chemie Der Erde, 2008
Abstract Rocks of the Late Cretaceous Tamdere Quartz Monzonite, constituting a part of the Eastern Pontide plutonism, include mafic microgranular enclaves (MMEs) ranging from spheroidal to ellipsoidal in shape, and from a few centimeters to decimeters in size.
Sabah Yilmaz Şahin
exaly   +4 more sources

Genesis and evolution of mafic microgranular enclaves through various types of interaction between coexisting felsic and mafic magmas

Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 1992
ABSTRACTThermal, mechanical and chemical exchange occurs between felsic and mafic magmas in dynamic magma systems. The occurrence and efficiency of such exchanges are constrained mainly by the intensive parameters, the compositions, and the mass fractions of the coexisting magmas.
Bernard Barbarin, Jean Didier
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The significance of mafic microgranular enclaves in the petrogenesis of the Dehno Complex, Sanandaj–Sirjan belt, Iran

Journal of Asian Earth Sciences, 2010
Abstract Quartz-monzodioritic and granodioritic enclaves occur in the Upper Cretaceous–Paleocene Dehno Complex, NW of Isfahan, Iran. They are hosted by hornblende-granodiorite and granodiorite–monzogranite, respectively. The presence of xenocrystic plagioclase, biotite, quartz, magnesio-hornblende, occasionally with relics of clinopyroxene (in quartz-
M Khalili
exaly   +2 more sources

Mafic Microgranular Enclaves and Interaction Between Felsic and Mafic Magmas in the Agacoren Intrusive Suite: Evidence from Petrographic Features and Mineral Chemistry

International Geology Review, 1996
The Agacoren Intrusive Suite is exposed as a large intrusive body over ∼500 km2 east of Lake Tuz in central Anatolia and consists of the Cokumkaya gabbro, the Agacoren granitoid, and young dikes. The Agacoren granitoid is the predominant lithology of the Agacoren Intrusive Suite, and is differentiated into several subunits ranging in composition from ...
Yusuf Kagan Kadioglu, Nilgün Gülec
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Hybridization of mafic microgranular enclaves: mineral and whole-rock chemistry evidence from the Karamadazı Granitoid, Central Turkey

International Journal of Earth Sciences, 2006
On the Eastern Tauride Belt, the Cretaceous calc-alkaline Karamadazi Granitoid consists of quartz diorite containing mafic microgranular enclaves (MME) and leucocratic granite. The quartz diorite consists of plagioclase (An8-65), hornblende, biotite, K-feldspar, quartz, epidote and titanite.
Kocak, Kerim
openaire   +2 more sources

Petrogenesis and tectonic implications of the biotite monzogranite and associated mafic microgranular enclaves in Tumuertai area, Inner Mongolia

Acta Petrologica Sinica, 2021
WANG WanQiong, XI AiHua, GE YuHui, BAI XinHui, WANG Hu   +4 more
exaly   +2 more sources

The Early Cretaceous Granitoids and Microgranular Mafic Enclaves of Sanguliu Pluton, the Liaodong Peninsula: Implications for Magma Mixing and Decratonic Gold Mineralization in the Eastern North China Craton

Minerals (Basel, Switzerland), 2022
Some Early Cretaceous granitoids characterized by abundant mafic microgranular enclaves (MMEs) formed by magma mixing have been associated with gold deposits in the eastern North China Craton (NCC).
Yongheng Zhou
exaly   +2 more sources

Mafic microgranular enclaves trace the origin of post-collisional magmatism

2023
Mafic microgranular enclaves (MME) appear associated with most post-collisional batholiths around the world. Together with the mafic-intermediate (sanukitoid) and granitic suites, it constitutes one of the most common features of post-collisional magmatism.
Daniel Gómez Frutos, Antonio Castro
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Hybridisation of mafic microgranular enclaves in the Lavras Granite Complex, southern Brazil

Journal of South American Earth Sciences, 2000
Abstract Twenty-five mafic microgranular enclaves of the Lavras Granite Complex in southern Brazil were studied petrographically and geochemically to establish their origin and to investigate the processes involved in their differentiation. Mesoscopic and microscopic textures indicate that they are products of magma mingling between a basic end ...
Lauro Valentim Stoll Nardi, Evandro Fernandes de Lima   +1 more
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