Results 21 to 30 of about 301,733 (364)

High level sill and dyke intrusions initiated from rapidly buried mafic lava flows in scoria cones of Tongoa, Vanuatu (New Hebrides), South Pacific [PDF]

open access: yes, 2006
Scoria cones are generally considered to grow rapidly in days to weeks or months. During their growth lava flows may be fed onto the cone surface from lava-lake breaches, or form by coalescence of spatter; such flows are preserved interbedded with scoria
Nemeth, Karoly, White, James D. L.
core   +2 more sources

Petrogénesis of a Las Lajas Caldera lava and tectonic processes in Nicaragua

open access: yesGeofísica Internacional, 1974
La caldera de Las Lajas en Nicaragua occidental, es uno de los tres centros volcánicos conocidos del Cuaternario inferior situados al este de la Depresión de Nicaragua.
Sthepen R. Alcorn
doaj   +1 more source

Fossil trees, tree moulds and tree casts in the Palaeocene Mull Lava Field, NW Scotland: context, formation and implications for lava emplacement [PDF]

open access: yes, 2016
Megafossils and macrofossils of terrestrial plants (trees, leaves, fruiting bodies, etc.) are found in sedimentary and pyroclastic units interbedded with lavas in many ancient lava fields worldwide, attesting to subaerial environments of eruption and the
Bell, Brian R., Williamson, Ian T.
core   +1 more source

Petrogenesis of Rinjani Post-1257-Caldera-Forming-Eruption Lava Flows

open access: yesIndonesian Journal on Geoscience, 2016
DOI:10.17014/ijog.3.2.107-126After the catastrophic 1257 caldera-forming eruption, a new chapter of Old Rinjani volcanic activity beganwith the appearance of Rombongan and Barujari Volcanoes within the caldera.
Heryadi Rachmat   +3 more
doaj   +1 more source

Near-seafloor magnetic mapping of off-axis lava flows near the Kairei and Yokoniwa hydrothermal vent fields in the Central Indian Ridge [PDF]

open access: yes, 2018
The Kairei (KHF) and Yokoniwa hydrothermal fields (YHF) are hosted in mafic as well as ultramafic rocks distributed at an off-axis volcanic knoll of the Central Indian Ridge.
Kyoko Okino, Masakazu Fujii
core   +2 more sources

Insights into post-emplacement lava flow dynamics at Mt. Etna volcano from 2016 to 2021 by synthetic aperture radar and multispectral satellite data

open access: yesFrontiers in Earth Science, 2023
Post-emplacement dynamics of lava flows is governed by several factors such as poroelastic deformation of the substrate; gravity-induced repacking and rearrangement of the vesicle-bearing fluid lava and other void spaces by superposed flows; lava ...
Lisa Beccaro   +6 more
doaj   +1 more source

Comparison of bacterial communities from lava cave microbial mats to overlying surface soils from Lava Beds National Monument, USA

open access: yesPLoS ONE, 2017
Subsurface habitats harbor novel diversity that has received little attention until recently. Accessible subsurface habitats include lava caves around the world that often support extensive microbial mats on ceilings and walls in a range of colors ...
K. Lavoie   +5 more
semanticscholar   +1 more source

Emplacement of inflated Pāhoehoe flows in the Naude’s Nek Pass, Lesotho remnant, Karoo continental flood basalt province: use of flow-lobe tumuli in understanding flood basalt emplacement [PDF]

open access: yes, 2018
Physical volcanological features are presented for a 710-m-thick section, of the Naude’s Nek Pass, within the lower part of the Lesotho remnant of the Karoo Large Igneous Province.
A Saunders   +57 more
core   +4 more sources

LAVA TUBE LEIðARENDI [PDF]

open access: yesRudarsko-geološko-naftni zbornik, 2017
The article related to the journal cover is dealing with the Iceland geology and lava tube Leiðarendi.
openaire   +3 more sources

Blowing Off Steam: Tuffisite Formation As a Regulator for Lava Dome Eruptions

open access: yesFrontiers in Earth Science, 2016
Tuffisites are veins of variably sintered, pyroclastic particles that form in conduits and lava domes as a result of localized fragmentation events during gas-and-ash explosions.
J. Kendrick   +5 more
semanticscholar   +1 more source

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