Results 31 to 40 of about 2,562 (192)

Titanium and water-rich metamorphic olivine in high-pressure serpentinites from the Voltri Massif (Ligurian Alps, Italy): evidence for deep subduction of high-field strength and fluid-mobile elements [PDF]

open access: yes, 2014
Titanium- and water-rich metamorphic olivine (Fo 86-88) is reported from partially dehydrated serpentinites from the Voltri complex, Ligurian Alps. The rocks are composed of mostly antigorite and olivine in addition to magnetite, chlorite, clinopyroxene ...
De Hoog, Jan C. M.   +3 more
core   +1 more source

Mineral chemistry and geothermobarometry of metabasites of the Majerad igneous-metamorphic complex (SE of Shahrood)

open access: yesJournal of Economic Geology, 2020
Introduction Thermobarometric models based on the chemical equilibrium among coexisting mineral-mineral or mineral-melts pairs are useful tools widely used to estimate the P-T path and chemical evolution during igneous processes. The high sensitivity of
Marzieh Veiskarami   +3 more
doaj   +1 more source

Mineral chemistry and geothermobarometry of gabbroic dykes ‎of the Garmab Ophiolite sequence ‎‎(Northeast of Kamyaran)‎ [PDF]

open access: yesپترولوژی, 2018
The Garmab ophiolite complex, a part of the Ophiolite-Radiolithic zone of Kermanshah, is located in the northeast of Kamyaran. In view of the Iranian geo-structural zones, this complex is situated between the Sanandaj-Sirjan Zone and the Zagros thrust ...
shahryar Mahmoudi   +2 more
doaj   +1 more source

Petrology, geothermobarometry and geochemistry of granulite facies wall rocks and hosting gneiss of gemstone deposits from the Mogok area (Myanmar)

open access: yesJournal of Asian Earth Sciences: X, 2023
The Mogok Metamorphic Belt (MMB) of Myanmar formed during the Paleogene collision between the West Burma block and the Shan-Thai block. The MMB is mainly composed of medium to high-grade metamorphic marble, calc-silicate rocks, gneiss, quartzite ...
Myint Myat Phyo   +5 more
doaj   +1 more source

Adiabat_1ph: A new public front-end to the MELTS, pMELTS, and pHMELTS models [PDF]

open access: yes, 2005
The program adiabat_1ph is a simple text-menu driver for subroutine versions of the algorithms MELTS, pMELTS, and pHMELTS [Asimow et al., 2004; Ghiorso et al., 2002; Ghiorso and Sack, 1995].
Asimow, Paul D., Smith, Paula M.
core   +1 more source

Mineral compositional constraints on the petrogenesis of gabbroic and monzodioritic rocks in Rangpur District, NW Bangladesh

open access: yesJournal of Asian Earth Sciences: X, 2023
This research deals with the petrography and mineral chemistry of gabbroic and monzodioritic rocks to characterize the minerals, including their genesis and tectonic evolution.
Ismail Hossain   +6 more
doaj   +1 more source

The Lomagundi-Jatuli carbon isotopic event recorded in the marble of the Tandilia System basement, Río de la Plata Craton, Argentina [PDF]

open access: yes, 2019
The “Lomagundi-Jatuli event” corresponds to the most important δ13C positive anomaly (≥5‰) globally reported in Palaeoproterozoic marine carbonates (between ∼2.30 and 2.06 Ga).
Ballivian Justiniano, Carlos Alberto   +6 more
core   +1 more source

MORB-derived amphibolites in the Paleozoic basement of the Aluminé Igneous-Metamorphic Complex, Neuquén, Argentina: Decoding its genesis, P-T evolution and pre-Andean regional correlations

open access: yesGeologica Acta, 2019
Amphibolites included in the metapelitic sequence and as xenoliths in intrusive magmatic rocks outcropping in the southern sector of the Aluminé Igneous-Metamorphic Complex (AIMC), Neuquén, Argentina, are studied in detail in order to determine their ...
I. URRAZA, S. DELPINO, L. GRECCO
doaj   +3 more sources

Ultra-high temperature metamorphism in the Guaxupé Complex: a lower crust segment

open access: yesBrazilian Journal of Geology, 2020
The area is located at the northern boundary of the Guaxupé Complex, which corresponds to the northern domain of the Socorro-Guaxupé Nappe, in the Southern Brasília Orogen, close to the Varginha Shear Zone.
Thaís Güitzlaf Leme   +2 more
doaj   +1 more source

A metamorphic perspective on the Pan African overprint in the Amery area of Mac. Robertson Land, East Antarctica [PDF]

open access: yes, 1997
The Amery area of Mac. Robertson Land lies between the early Palaeozoic granulite terrain of Prydz Bay and Meso-Neoproterozoic granulites in northern Prince Charles Mountains (nPCM).
Hand, M., Scrimgeour, I.
core   +1 more source

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