Results 61 to 70 of about 5,229 (211)

Geochemistry of Igneous Rocks of Citirem Formation and Its Implications for the Tectonic Setting in Ciletuh – Palabuhanratu UNESCO Global Geopark Area

JGEET: Journal of Geoscience, Engineering, Environment and Technology
The igneous rocks of the Citirem Formation in the Ciletuh – Palabuhanratu UNESCO Global Geopark area petrographically not only consist of basalt, but also andesite, dacite, and gabbro.
Hafidhah Nurul Haq, Mega Fatimah Rosana, Cipta Endyana, Katon Sena Ajie Nugraha, Irpan Alamsyah   +4 more
doaj   +1 more source

Influences of Permian igneous rock on seismic imaging of underlying strata in the Hanilcatam area, Tarim Basin, China

Journal of Natural Gas Geoscience, 2019
Large-scale Permian igneous rock is developed in the Hanilcatam area, Tarim Basin. In order to accurately capture influences of thick igneous rock on seismic imaging of its underlying strata based on actual drilling, well logging and 3D seismic data, the
Dong Sun, Xiaoqian Shi, Zhenqing Wang, Lixin Chen, Jing Wang, Jiaqing Sun, Dongdong Dai, Qifei Fang   +7 more
doaj   +1 more source

Erupted Volume During the 2014–2023 Semisopochnoi Unrest and Eruption Constrained by Multi‐Platform InSAR and Volcanic Gas Observations

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract Volcano deformation data provide important constraints on magma dynamics during volcanic unrest and eruptions. From these observations, we can estimate subsurface pressure changes and relate them to volume change in the reservoir. However, because magma and rock are compressible, this volume change cannot be directly equated with eruptive ...
Mario Angarita, Valerie Wasser, Ronni Grapenthin, Allan Lerner, Taryn Lopez, Revathy M. Parameswaran, John Lyons   +6 more
wiley   +1 more source

Pre-eruption compositional gradients and mixing of andesite and dacite magma erupted from Nevado del Ruiz Volcano, Colombia in 1985

, 1990
A small volume of mixed andesite and dacite magma was ejected as pumice fall, pyroclastic flow and pyroclastic surge during the 13 November 1985 explosive eruption of Nevada del Ruiz volcano in Colombia.
Devine, J., Palais, J. M., Sigurdsson, H., Carey, S.   +3 more
core   +1 more source

Marine Volcaniclastic Record of Early Arc Evolution in the Eastern Ritter Range Pendant, Central Sierra Nevada, California

Geochemistry, Geophysics, Geosystems, 2018
Marine volcaniclastic rocks in the Sierra Nevada preserve a critical record of silicic magmatism in the early Sierra Nevada volcanic arc, and this magmatic record provides precise minimum age constraints on subduction inception and tectonic evolution of ...
A. P. Barth, J. L. Wooden, N. R. Riggs, J. D. Walker, K. Tani, S. C. Penniston‐Dorland, C. E. Jacobson, J. A. Laughlin, R. Hiramatsu   +8 more
doaj   +1 more source

Subduction Recycling and Closure of the Paleo‐Asian Ocean in the Beishan Orogen: Constraints From the Niujuanzi Ophiolitic Mélange and Associated Intrusions

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract Ophiolitic mélanges and associated intrusions provide key archives for reconstructing the evolution of ancient ocean basins and subduction‐related mantle modification. The Hongliuhe–Niujuanzi–Xichangjing ophiolitic mélange in the central Beishan Orogen preserves important records of the Paleo‐Asian Ocean, but the timing of oceanic subduction ...
Yujia Song, Xijun Liu, Yao Xiao, Honghu Zeng, Pengde Liu   +4 more
wiley   +1 more source

Dacite – siltstone peperite from Trlično at Rogatec, Eastern Slovenia

Geologija, 2006
Dacitic glassy lava flow at Trlično is surrounded by a dacite – siltstone peperite and peperitic breccia that underwent alteration, recognised in two, only a few metres thick zones.
Polona Kralj
doaj  

Episodic Seismicity Bursts Driven by Magma Intrusion During the 2025 Santorini‐Amorgos Seismic Crisis

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 10, October 2026.
Abstract The 2025 Santorini–Amorgos seismic crisis in Greece had an exceptionally large number and sustained rate of moderate‐sized earthquakes. We used a machine‐learning‐based earthquake monitoring workflow to detect and relocate 66,109 earthquakes and interpret the results in the context of global analogs.
Xing Tan, William L. Ellsworth, Gregory C. Beroza, Stephanie G. Prejean, Jeremy D. Pesicek   +4 more
wiley   +1 more source

A petrogenetic study of the dacite from the 1912 eruption of Novarupta, Katmai National Park, Alaska: implications for magma storage locations [PDF]

, 1992
Thesis (M.S.) University of Alaska Fairbanks, 1992The 1912 eruption o f Novarupta Volcano involved three compositionally distinct magmas: rhyolite, dacite, and andesite.
Avery, Victoria Frances
core  

The other stone. Dacite quarries and workshops in the prehispanic Tarascan territory, Michoacán, Mexico

, 2017
International audience"Due to its sheer abundance and informative potential, Mesoamerican archaeology tends to focus on obsidian as a mineral resource.
Faugère, B., Alejandra Castañeda, Person, A., Siebe, Claus, Zeitoun, V., Quezada, Osiris, Gerard, M., Renard, M., Mireles, Camilo, Claus Siebe, Osiris Quezada, Barrientos, I., Castañeda, Alejandra, Maurer, A., Véronique Darras, Darras, Véronique, Durlet, C., Camilo Mireles, Reyes-Guzmán, Nanci, Nanci Reyes-Guzmán, del Carmen Ruiz, P.   +20 more
core   +1 more source