Results 41 to 50 of about 5,229 (211)
, 2019 Data tables for 40Ar/39Ar step heating experiments on volcanic rocks and plagioclase from Mount Rainier volcano, Washington (USA), used to establish the eruption age of the dacite of Sunset ...
Chun-Yuan Huang (591741) +6 more
core +3 more sources
, 2002 International audienceVolcán San Pedro in the Andean Southern Volcanic Zone (SVZ) Chile, comprises Holocene basaltic to dacitic lavas with trace element and strontium isotope ratios more variable than those of most Pleistocene lavas of the underlying ...
Singer, Brad, Costa Rodriguez, Fidel
core +1 more source
Geology, alteration, mineralization and geochemistry at south of Arghash (Neyshabour)
Journal of Economic Geology, 2011 The Arghash area is located 45 km to southwest of Neyshabour. The subvolcanic rocks in the area consist of biotite hornblende quartz monzodiorite porphyry, hornblende biotite quartz monzodiorite porphyry, hornblende monzonite porphyry, biotite hornblende
Zahra Karimi Saeidabadi +2 more
doaj +1 more source
Frontiers in Earth Science, 2020 Volcanic rocks and associated dikes have been exposed in Wang Nam Khiao area, Nakhon Ratchasima Province, northeastern Thailand where complex tectonic setting was reported.
Vanachawan Hunyek +2 more
doaj +1 more source
Quantifying Bulk Silica of Felsic and Mafic Lithologies on Mars
Geophysical Research Letters, Volume 53, Issue 22, 28 November 2026.Abstract On Earth, silica‐rich volcanism is typically associated with convergent plate boundaries, yet Mars, a stagnant‐lid body, also hosts regions with silicic lithologies. Here, we introduce a novel approach to directly estimate bulk silica (SiO2 wt.%) using multispectral data and machine learning.
Nandita Kumari +5 more
wiley +1 more source
Advances in Civil Engineering, 2021 The western part of our country is mostly alpine regions. The rock and soil have been in a strong natural freeze-thaw environment for a long time, and their physical and mechanical properties are easily affected by external loads and external ...
Yu Ye, Li Li, Xunjian Xu
doaj +1 more source
The Depositional Record, Volume 12, Issue 5, November 2026.The Permian freshwater lacustrine sedimentary sequence rich in analcime, with unusual authigenic aegirine and NaFe3+ clinopyroxene. Product of ashfall directly linked with fossil accumulation (Konzentrat‐Lagerstätte). Abstract The Early Permian freshwater lacustrine sedimentary sequence in the vicinity of Bačov (Czechia) is world‐famous for its rich ...
Jakub Jirásek +3 more
wiley +1 more source
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 11, November 2026.Abstract Hydrothermal sealing is a mechanism thought to be responsible for challenging‐to‐forecast phreatic and phreatomagmatic eruptions. To better understand this process, we present a study in which we assessed the textural, mineralogical, and physical properties (porosity, permeability, and tensile strength) of blocks of hydrothermal seal that were
Michael J. Heap +11 more
wiley +1 more source
Journal of Geophysical Research: Planets, Volume 131, Issue 11, November 2026.Abstract Lunar “red spots” have been inferred to be regions of extrusive silicic volcanism based on the analysis of remote sensing observations that suggest SiO2 ${\mathrm{S}\mathrm{i}\mathrm{O}}_{2}$‐rich, FeO‐poor composition and morphologies similar to terrestrial silicic domes.
S. R. Burnette +5 more
wiley +1 more source
Internal structures of a subaerial dacite cryptodome at Usu volcano, Hokkaido, Japan [PDF]
application/pdfA partly eroded, subaerial, dacite cryptodome at Showa-Shinzan, Usu volcano, Hokkaido, Japan, displays its internal structures, and provides an excellent opportunity to study contact relationship between cryptodome and overlying sediment ...
ヨコヤマ, ユウ +14 more
core +1 more source