Results 11 to 20 of about 20,752 (258)
Mineralogical and petrophysical research of pyroclastic rock of volcano Eyjafjallajokull (Iceland)
RUDN Journal of Engineering Research, 2011 Take a mineralogical and petrophysical research of pyroclastic rock of volcano Eyjafjallajökull. Test a mineral composition and petrophysical properties of pyroclastic rock.
V Yu Abramov +2 more
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PETROGRAPHY OF PYROCLASTIC ROCK MOUNT MASURAI JAMBI PROVINCE
JOURNAL ONLINE OF PHYSICSThe magmatic arc of Sumatra Island, which is indicated by the presence of the Barisan Mountains zone on the west side of Sumatra Island with a general direction northwest - southeast, makes Mount Masurai, which is administratively in Merangin Regency, Jambi Province, become one of the volcanoes on Sumatra Island.
Kirana, Febiyora Chandra +6 more
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Petroleum Exploration and Development, 2020 Based on analysis of core observation, thin sections, cathodoluminescence, scanning electron microscope (SEM), etc., and geochemical testing of stable carbon and oxygen isotopes composition, element content, fluid inclusions, and formation water, the ...
Juan LI +8 more
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Fluid Outflows From Venus Impact Craters: Analysis From Magellan Data [PDF]
, 1992 Many impact craters on Venus have unusual outflow features originating in or under the continuous ejecta blankets and continuing downhill into the surrounding terrain. These features clearly resulted from flow of low-viscosity fluids, but the identity of
Asimow, Paul D., Wood, John A.
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A thermodynamical model for rainfall-triggered volcanic dome collapse [PDF]
, 2004 Dome-forming volcanic eruptions typically involve the slow extrusion of viscous lava onto a steep-sided volcano punctuated by collapse and the generation of hazardous pyroclastic flows.
Adrian J. Matthews +14 more
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Scientific Reports, 2022 During Earth’s history, geosphere-biosphere interactions were often determined by momentary, catastrophic changes such as large explosive volcanic eruptions.
Dávid Karátson +14 more
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The fragmentation threshold of pyroclastic rocks [PDF]
Earth and Planetary Science Letters, 2004 In response to rapid decompression, porous magma may fragment explosively. This occurs when the melt can no longer withstand forces exerted upon it due to the overpressure in included bubbles. This occurs at a critical pressure difference between the bubbles and the surrounding magma. In this study we have investigated this pressure threshold necessary
Oliver Spieler +5 more
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Maars to calderas. End-members on a spectrum of explosive volcanic depressions [PDF]
, 2015 We discuss maar-diatremes and calderas as end-members on a spectrum of negative volcanic landforms (depressions) produced by explosive eruptions (note—we focus on calderas formed during explosive eruptions, recognizing that some caldera types are not ...
Palladino, Danilo Mauro +3 more
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Mineralogical properties of pyroclastic materials from Mount Merapi, Indonesia [PDF]
BIO Web of ConferencesMount Merapi, located in Indonesia, is known as one of the most active volcanoes globally, often resulting in volcanic eruptions that produce pyroclastic materials.
Kurniati +5 more
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The Kummitsoiva komatiite complex and its satellites in northern Finland [PDF]
Bulletin of the Geological Society of Finland, 1983 The Kummitsoiva komatiite complex and its satellites, regarded either as Archean or Proterozoic in age, consist principally of amphibole- chlorite rocks corresponding chemically to basaltic komatiite of the Geluk type in South Africa.
M. Saverikko
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