Results 21 to 30 of about 24,905 (235)

2.2 ga mafic sills in the central part of the Karelian Сraton: U-Pb dating of zircons and geochemistry of gabbro-dolerites in the lake Bolshozero area

open access: yesTransactions of the Karelian Research Centre of the Russian Academy of Sciences, 2018
New age and compositional data for mafic igneous intrusions in the Bolshozero area, western Karelia, are reported. In this area, Jatulian gabbro-dolerites form several bodies that cut through the host Archean and Paleoproterozoic supracrustal and ...
Александра Владимировна Степанова   +5 more
doaj   +1 more source

The Timbavati Gabbro of the Kruger National Park

open access: yesKoedoe: African Protected Area Conservation and Science, 1986
The structure, geochemistry and isotope geochemistry of the Timbavati Gabbro, a suite of basic, intrusive sills located within and outside the Kruger National Park, are discussed.
F. Walraven
doaj   +1 more source

Trace element and isotope constraints on crustal anatexis by upwelling mantle melts in the North Atlantic Igneous Province: an example form the Isle of Rum, NW Scotland [PDF]

open access: yes, 2009
Sr and Nd isotope ratios, together with lithophile trace elements, have been measured in a representative set of igneous rocks and Lewisian gneisses from the Isle of Rum in order to unravel the petrogenesis of the felsic rocks that erupted in the early ...
Ellam, R.M.   +5 more
core   +1 more source

Widespread abiotic methane in chromitites [PDF]

open access: yes, 2018
Recurring discoveries of abiotic methane in gas seeps and springs in ophiolites and peridotite massifs worldwide raised the question of where, in which rocks, methane was generated.
Etiope, G.   +8 more
core   +1 more source

Zircons and zircon’s geochronology of gabbro Nurali massif (the Southern Urals)

open access: yesЛитосфера, 2018
Object. In the article presents the the results of mineralogy, geochemistry and isotope-chronological investigation of zircons from gabbro Nurali massif. Materials and methods . Amphibole gabbro is the fine-grained and massive texture rock, which cosists
Artur A. Krasnobaev, Petr M. Valizer
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

Geology, petrology, geochemistry and geochronology of Tarik Darreh plutonic rocks, northeastern Iran

open access: yesJournal of Economic Geology, 2020
Introduction The investigated area in northeastern Iran that is known as the Tarik Darreh arsenopyrite-Au-W prospecting target is situated in the Kopeh Dagh zone (Fig. 1).
Jamal Ghavi   +4 more
doaj   +1 more source

GEOLOGICAL SETTING AND GENESIS OF THE KURMANSKY GABBRO-TRONDHJEMITE MASSIF (MIDDLE URALS)

open access: yesГеодинамика и тектонофизика, 2022
This paper reports the results of petrogeochemical studies of the Kurmansky gabbro-trondhjemite massif (eastern slope of the Middle Urals), lying in the western part of the large Reftinsky allochthonous block within the accretion East Uralian megazone ...
S. V. Pribavkin   +2 more
doaj   +1 more source

RESULTS OF GEOLOGICAL-PETROGRAPHIC STUDY OF 1998–2018 OF THE ILMENOGORSKY COMPLEX, SOUTH URALS [PDF]

open access: yesМинералогия, 2020
The data on findings of new minerals for the Ilmeny Mountains, the Urals and the world and new rocks for the Ilmeny Mountains are summarized. The main results of geological works at the territory of the Ilmeny State Reserve, which changed the ideas of ...
V.G. Korinevsky, E.V. Korinevsky
doaj   +1 more source

Mafic-ultramafic intrusions of Matokulma, Palojärvi, and Hongonniittu within the Central Finland Granitoid Complex with special reference to their petrogenesis and ore potential [PDF]

open access: yesBulletin of the Geological Society of Finland
We describe three previously unknown or poorly studied mafic-ultramafic intrusions (Matokulma, Palojärvi, Hongonniittu) from the south-central part of the Paleoproterozoic Central Finland Granitoid Complex (CFGC).
Seppo Karvinen   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy