Results 1 to 10 of about 24,905 (235)

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

Swiss 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, Jörg Hermann, Thomas Pettke   +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)

Journal 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, Ghodrat Torabi , Nargess Nosouhian   +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]

پترولوژی, 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, Mohssen Moazzen, Martin Timmerman   +2 more
doaj   +1 more source

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

پترولوژی, 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]

Bulletin 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

PLATINUM METAL MINERALIZATION OF THE SOUTH URALS MAGMATIC COMPLEXES: GEOLOGICAL AND GEODYNAMIC CHARACTERISTICS OF FORMATIONS, PROBLEMS OF THEIR GENESIS, AND PROSPECTS

Геодинамика и тектонофизика, 2021
In the South Urals, we have identified and investigated two platinum-bearing formations – ophiolite chromitebearing complexes, and the Khudolaz differentiated mafic-ultramafic complex with sulfide Cu-Ni mineralization.
I. R. Rakhimov, D. E. Saveliev, A. V. Vishnevskiy   +2 more
doaj   +1 more source

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

California 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, Molly R. Caldwell, Debra R. Ayres, Virginia Meyer   +3 more
doaj   +1 more source

Gabbro Discovery in Discovery Deep: First Plutonic Rock Samples From the Red Sea Rift Axis

Frontiers in Earth Science, 2021
Plutonic rocks such as gabbros provide information on magmatic and tectonic processes which occur beneath a mid-ocean rift axis as well as on the formation of the oceanic crust.
Jörg Follmann, Froukje M. van der Zwan, Jonas Preine, Christian Hübscher, Romain Bousquet, Nico Augustin   +5 more
doaj   +1 more source

Intra-oceanic subduction in the southeastern Paleo-Asian ocean: Evidence from early Permian gabbro of the Diyanmiao ophiolite in central Inner Mongolia, North China

Frontiers in Earth Science, 2023
Investigation of intra-oceanic subduction can improve our understanding of plate tectonic processes and the history of continental growth. Evidence for intra-oceanic subduction in the Paleo-Asian Ocean has recently become an important focus of research ...
Xiawei Zhang, Xiawei Zhang, Yingjie Li, Yingjie Li, Genhou Wang, Shuai Wang, Shuai Wang, Xingrui Kong, Xiaodong Wang, Zhibin Liu   +9 more
doaj   +1 more source

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

Ilmu 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