Results 11 to 20 of about 65,183 (333)

Petrology and P-T condition of white mica-chlorite schists from Vlasina series - Surdulica, SE Serbia [PDF]

open access: yesGeološki Anali Balkanskoga Poluostrva, 2002
This paper reports structural, textural, petrological and metamorphic data from Vlasina Series of greenschists rocks (as part of the Upper Complex of the Serbo-Macedonian Massif) within which group of white mica-chlorite schist are extensively developed.
Vasković Nada J.
doaj   +1 more source

Localisation of Ancient Migration Pathways inside a Fractured Metamorphic Hydrocarbon Reservoir in South-East Hungary

open access: yesApplied Sciences, 2020
Numerous fractured hydrocarbon reservoirs exist in the metamorphic basement of the Pannonian Basin in Hungary. Many decades of experience in production have proven that these reservoirs are highly compartmentalised, resulting in a complex mosaic of ...
Tivadar M. Tóth   +4 more
doaj   +1 more source

Varying processes, similar results: How composition influences fragmentation and subsequent feeding of large pyroclastic density currents

open access: yesFrontiers in Earth Science, 2022
Unlike their silicic counterparts, mafic eruptions are known for being on the low-end of the explosivity spectrum with eruption styles commonly ranging from effusive to Hawaiian fire fountaining.
Olivier Bernard   +10 more
doaj   +1 more source

Constraining Magma Reservoir Conditions by Integrating Thermodynamic Petrological Models and Bulk Resistivity From Magnetotellurics

open access: yesGeochemistry, Geophysics, Geosystems, 2022
Magnetotelluric (MT) data image the bulk resistivity of the subsurface which can be used to infer magma reservoir conditions beneath volcanoes. The bulk resistivity of magma depends primarily on the melt volume fraction, temperature, and water content ...
Darcy Cordell   +3 more
doaj   +1 more source

Controls on zircon age distributions in volcanic, porphyry and plutonic rocks [PDF]

open access: yesGeochronology
The distribution of zircon crystallisation ages in igneous rocks has been proposed to provide insights into the dynamics of underlying magma reservoirs.
C. Nathwani   +5 more
doaj   +1 more source

LATE-DEVONIAN SAKHARA DUNITE-CLINOPIROXENITE-GABBRO COMPLEX (EAST MAGNITOGORSK ZONE, SOUTH URALS): PETROLOGICAL-MINERALOGICAL FEATURES AND GEODYNAMIC SETTING [PDF]

open access: yesМинералогия, 2021
The relevance of the work is caused by necessary regional analysis of magmatic evolution of the East Magnitogorsk belt and refinement of ideas on geodynamics of the South Urals.
T.N. Surin
doaj   +1 more source

Магнитные и плотностные характеристики магматических пород в районе УАС Академик Вернадский

open access: yesУкраїнський антарктичний журнал, 2020
В результате исследований магнитных и плотностных свойств более чем 500 образцов мезозойских и па­лео­ценовых интрузивных и вулканогенных пород, отобранных в западной части Антарктического полу­ост­рова (район станции Академик Вернадский), получена новая
V. Shpyra   +6 more
doaj   +1 more source

Structural controls on petroleum migration and entrapment within the faulted basement blocks of Szeghalom Dome (Pannonian Basin, SE Hungary)

open access: yesGeologia Croatica, 2015
 The basement of the Pannonian Basin contains several fractured metamorphic hydrocarbon reservoirs that typically form structural highs between the Neogene sedimentary sub-basins.
Lászlo Molnár   +2 more
doaj   +1 more source

Post-eruptive mobility of lithium in volcanic rocks

open access: yesNature Communications, 2018
Lithium, an increasingly economically important element, is also used to trace the cycling of materials through the Earth system. Here the authors show that post-eruptive processes such as degassing and groundmass crystallisation control the inventory of
B. S. Ellis   +7 more
doaj   +1 more source

Petrology [PDF]

open access: yesPhilosophical Transactions of the Royal Society of London, 1879
The numerous specimens illustrating the rock formations of the Isle of Rodriguez, collected by Mr. I. Bayley Balfour from different localities, need only a cursory inspection to attest the volcanic character of the whole mass of the island. Rodriguez, in fact, consists of Doleritic lavas that appear to have been poured out at a considerable number of ...
openaire   +1 more source

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