Results 1 to 10 of about 24,652 (211)

Magmatic genesis, hydration, and subduction of the tholeiitic eclogite-facies Allalin gabbro (Western Alps, Switzerland) [PDF]

open access: yesSwiss Journal of Geosciences
The Allalin gabbro of the Zermatt-Saas meta-ophiolite consists of variably metamorphosed Mg- to Fe-Ti-gabbros, troctolites, and anorthosites, which are crosscut by basaltic dykes.
Julia Dietrich   +2 more
doaj   +2 more sources

Mineralogy of anorthosite veins and host gabbros in the Kal-e-Kafi intrusive body (northeast of Anarak, Isfahan Province, Central Iran)

open access: yesJournal of Economic Geology, 2022
Introduction In the northeastern part of the Isfahan province and 65 km northeast of the Anarak city (Kal-e-Kafi area), an I-type granitoid pluton cross cut the Paleozoic metamorphic rocks and Eocene volcanic rocks. In the contact of this granitoid body
Hanan Salim   +2 more
doaj   +1 more source

Magmatic characteristics and crystallization condition of the Gasht- Masuleh gabbros (North of Iran) based on clinopyroxene and orthopyroxene composition [PDF]

open access: yesپترولوژی, 2019
The Alborz Range, as a part of the Alpine-Himalayan orogeny, formed during the Cimmerian orogeny due to northward movements of the Central Iran micro-plate towards Eurasia.
Leila Rezaei   +2 more
doaj   +1 more source

Tectonomagmatic setting of the Siahbaz A-type granitoids and mafic intrusions (Northwest of Khoy [PDF]

open access: yesپترولوژی, 2017
The Siahbaz granite-gabbro-appinite outcrops from the Northwest Khoy is related to one of the complex of the Late Ordovician-Early Permian. The complex is located on the north Sanandaj-Sirjan Zone.
Abdolnaser Fazlnia
doaj   +1 more source

Mafic and ultramafic igneous rocks of the Raisduoddar-Halti area in the Finnish-Norwegian Caledonides. Petrography, mineralogy and geochemistry [PDF]

open access: yesBulletin of the Geological Society of Finland, 1991
The mafic and ultramafic rocks in the Raisduoddar-Halti area constitute a shallow horizontal allochthonous plate in the highest tectono-stratigraphic position of the Finnish Caledonides.
P. Sipilä
doaj   +1 more source

Effects of a firebreak on plants and wildlife at Pine Hill, a biodiversity hotspot, El Dorado County, California

open access: yesCalifornia Fish and Wildlife Journal, 2020
We examined the effects of hand clearing and pile burning of chaparral on plants and wildlife on the perimeter of Pine Hill 1–2 years after clearing.
J. Mario K. Klip   +3 more
doaj   +1 more source

Characteristics of Soils Developing from Gabbro, Phyllite and Chert Parent Rock in Karangsambung District

open access: yesIlmu Pertanian (Agricultural Science), 2019
Understanding the nature of the soil is very important to know the potential and the proper management of the soil. This study aimed to determine the differences in morphological, physical, and chemical properties of the soils developing from gabbro ...
Ratna Taher, Makruf Nurudin, Eko Hanudin
doaj   +1 more source

Neoproterozoic Gabbro and Diorites of the Tianquan County, Longmenshan Orogenic Belt, SW China: U-Pb Ages, Petrogenesis and Tectonic Settings [PDF]

open access: yesLithosphere
Petrological and isotope-geochemical studies of magmatic rocks are a necessary part of most tectonic and metallogenic reconstructions, in particular, in orogenic belts formed at active margins of cratonic blocks that experienced long-term and ...
Inna Safonova   +10 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

Assessment of the comagmaticity of gabbroids and syenites of the Arsentyevsky massif (Western Transbaikalia)

open access: yesЛитосфера, 2018
Object . The results of geochronological and isotope-geochemical studies of the Arsentyevsky titaniferous gabbro-syenite massif of the Western Transbaikalia, which previously referred to the gabbro-syenite series of a two-phase structure are presented ...
Evgeny I. Lastochkin   +4 more
doaj   +1 more source

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