Results 121 to 130 of about 23,492 (308)

Origin of the ungrouped achondrite NWA 4518: mineralogy and geochemistry of FeNi-metal [PDF]

open access: yes, 2011
Ungrouped achondrite NWA 4518 is an ultramafic breccia with abundant siderophile rich IIA-like metal. Its silicate chemistry is similar to that of WINs, HEDs, and silicate inclusions of IIE irons.
Franchi, I.   +5 more
core  

Subvolcanic contact metasomatism at El Laco Volcanic Complex, Central Andes [PDF]

open access: diamond, 2010
José A. Naranjo   +2 more
openalex   +1 more source

Petrological and geochemical features of Biga Peninsula granitoids, NW Anatolia, Turkey

open access: yesBulletin of the Mineral Research and Exploration, 2019
Ümit AYDIN   +3 more
doaj   +1 more source

Mechanism of Propagation of Metasomatic Reaction

open access: yesJournal of Geography (Chigaku Zasshi), 1988
After a brief retrospect on the developement since middle 1950's of studies on metasomatic process, the paper deals with some recent results of experiments aimed to observe the mechanism of propagation of the metasomatic material tranfer in silicates. It is shown that “relict” minerals often participate in the metasomatic reaction.
openaire   +3 more sources

A mid-Archaean ophiolite complex, Barberton Mountain land [PDF]

open access: yes
New field observations and structurally restored geologic sections through the southern part of 3.5-3.6 Ga Barberton greenstone belt show that its mafic to ultramafic rocks form a pseudostratigraphy comparable to that of Phanerozoic ophiolites; this ...
Dewit, M. J., Hart, R., Hart, R.
core   +1 more source

The effects of K-metasomatism in the Bahía Laura Volcanic Complex, Deseado Massif, Argentina: Petrologic and metallogenic consequences [PDF]

open access: green, 2010
Gerardo Páez   +4 more
openalex   +1 more source

Hydrothermal-metasomatic systems as the most important factor for the formation of elements of the oil and gas-bearing complex in the Bazhenov-abalak sediments

open access: yesGeoresursy
A model of the activity of hydrothermal-metasomatic systems confined to certain structural elements is proposed in the present article. The model is based on the analysis of a large volume of traditional studies: measurements of porosity coefficients ...
E. V. Karpova   +7 more
doaj   +1 more source

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