Results 181 to 190 of about 28,093 (233)

Petrogenesis of Archaean Tonalites

Geologische Rundschau, 1982
The Archean tonalitic magma series is characterized by a high Al2O3 and Na2O content. Tertiary tonalites with similar major element composition have been generated in subduction zones. It is therefore suggested that the Archean tonalites was generated in relation to subduction zones, the primary magma of the series being of dioritic composition.
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V. Petrogenesis and discussion

Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1971
Basaltic magmas are formed by partial melting of a source rock of peridotitic composition (pyrolite) under upper mantle conditions. Experimental studies of the mineralogy of pyrolite and the melting relations of various basaltic magmas under high-pressure conditions are integrated in an attempt to present an internally consistent model of ...
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Petrogenesis of lunar troctolites

Journal of Geophysical Research: Planets, 1994
Models of petrogenesis for lunar troctolites are severely constrained by the high Mg* (>88) values of the most primitive members of the Mg‐rich suite. Melts derived by partial melting of olivine cumulates to the lunar magma ocean have high Mg* but are strongly undersaturated with respect to plagioclase. Assimilation of lunar crust cannot bring these
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Petrogenesis: 1: The lavas

1994
Abstract In this chapter we consider the derivation and mode of development of the spectrum of lava types that constitute the Solomon Islands Younger Volcanic Suite. By implication this may also cast a little light on the genesis of lavas of other island arcs, particularly those of dominantly intra-oceanic affiliation.
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In situ geochemical composition of apatite in granitoids from the eastern Central Asian Orogenic Belt: A window into petrogenesis

Geochimica Et Cosmochimica Acta, 2022
Peter A Cawood, Wen-Liang Xu, Jie Tang
exaly  

PETROGENESIS II:

2022
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Petrogenesis of carbonatites

Goldschmidt2023 abstracts, 2023
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Petrogenesis

2013
Naresh Chandra Ghose, Nilanjan Chatterjee, null Fareeduddin   +2 more
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Apatite geochemical and Sr Nd isotopic insights into granitoid petrogenesis

Chemical Geology, 2021
Jin-Hui Yang, Yue-Heng Yang, Yu-Sheng Zhu   +2 more
exaly  

Igneous petrogenesis

Geochimica et Cosmochimica Acta, 1997
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