Results 41 to 50 of about 2,061 (160)

Phreatomagmatic deposits and stratigraphic reconstruction at Debunscha Maar (Mt Cameroon volcano) [PDF]

, 2010
The Debunscha Maar (DM) is located on the southwest flank of Mount Cameroon, an active stratovolcano on the Cameroon volcanic line (CVL). Here, we present the physical characteristics of the pyroclastic deposits at DM with the aim of deciphering tephra ...
Devey, Colin W., Ngwa, Caroline, Suh, C. E.   +2 more
core   +1 more source

The Upper Crustal Structure of the Eifel Volcanic Region (Southwest Germany) From Local Earthquake Tomography Using Large‐N Seismic Network Data

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 11, November 2025.
Abstract From September 2022 to August 2023, a temporary large‐N seismic experiment with more than 494 station locations was conducted in the Eifel volcanic fields of southwest Germany, where massive intracontinental maars and explosive centers are distributed. The last major eruption occurred at the Laacher See volcano (LSV) only 13 ka ago.
Hao Zhang, Torsten Dahm, Christian Haberland, Marius Paul Isken, Patrick Laumann, Pınar Büyükakpınar   +5 more
wiley   +1 more source

Sassolite Precipitation at the Restless Campi Flegrei Volcano in Italy Points to Hydrothermal Flashing by Deep Boron‐Rich Brines

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 10, October 2025.
Abstract Studying the behavior of dormant volcanoes is a major challenge in volcanology. Here, we conducted a 10‐year survey of hydrothermal mineralization at Campi Flegrei, an active volcano near Naples in Italy, which last erupted in 1538. Our survey revealed a significant output of boric acid at the hydrothermal sulfate discharge area of Pisciarelli,
M. Piochi, A. Mormone, G. Solomita, R. Moretti   +3 more
wiley   +1 more source

A Volcanological Paradox in a Thin-Section: Large Explosive Eruptions of High-Mg Magmas Explained Through a Vein of Silicate Glass in a Serpentinized Peridotite Xenolith (Hyblean Area, Sicily)

Geosciences, 2019
Ultramafic magmas (MgO ≥ 18 wt%) are generally thought to be primary mantle melts formed at temperatures in excess of 1600 °C. Volatile contents are expected to be low, and accordingly, high-Mg magmas generally do not yield large explosive ...
Alessandra Correale, Vittorio Scribano, Antonio Paonita   +2 more
doaj   +1 more source

An Improved Bedrock Geology Characterization in Limerick Basin Using Multi‐Geophysical Data Integration Guided by Petrophysics and Outcrop Data

Geophysical Prospecting, Volume 73, Issue 7, September 2025.
ABSTRACT Geological mapping in the Limerick Basin, Ireland, presents significant challenges due to the extensive glacial overburden obscuring the bedrock geology. To address this, multiple geophysical datasets comprising the Bouguer gravity anomaly, total magnetic intensity and resistivity depth slice at 60 m depth obtained from frequency domain ...
Prithwijit Chakraborti, Aline Melo, Eoin Dunlevy, Mark Holdstock   +3 more
wiley   +1 more source

Time-lapse characterization of hydrothermal seawater and microbial interactions with basaltic tephra at Surtsey Volcano [PDF]

, 2015
A new International Continental Drilling Program (ICDP) project will drill through the 50-yearoldedifice of Surtsey Volcano, the youngest of the Vestmannaeyjar Islands along the south coast of Iceland, to perform interdisciplinary time-lapse ...
Bach, W., Cappelletti, P., Coleman, N. J., Gudmundsson, M. T., Ivarsson, M., Jackson, M. D., Jónasson, K., Jørgensen, S. L., Marteinsson, V., Mcphie, J., Moore, J. G., Nielson, D., Rhodes, J. M., Rispoli, C., Schiffman, P., Stefánsson, A., Türke, A., Vanorio, T., Weisenberger, T. B., White, J. D. L., Zierenberg, R., Zimanowski, B.   +21 more
core   +4 more sources

Felsic maar-diatreme volcanoes: a review [PDF]

Bulletin of Volcanology, 2017
Felsic maar-diatreme volcanoes host major ore deposits but have been largely ignored in the volcanology literature, especially for the diatreme portion of the system. Here, we use two Mexican tuff rings as analogs for the maar ejecta ring, new observations from one diatreme, and the economic geology literature on four other mineralized felsic maar ...
Pierre-Simon Ross, Gerardo Carrasco Núñez, Patrick Hayman   +2 more
openaire   +2 more sources

High‐Resolution Lake Deposits Record Temperature Variability During the Middle Eocene Greenhouse in Central Europe

Paleoceanography and Paleoclimatology, Volume 40, Issue 7, July 2025.
Abstract High‐resolution continental temperature records from geological archives are crucial in order to evaluate temperature dynamics under fundamentally different climate conditions than today. Particularly the warm early to middle Eocene (∼56–40 million years ago) has become the focus of paleoclimate studies with the intention of quantifying ...
Clemens Schmitt, Iuliana Vasiliev, Niels Meijer, Andreas Mulch   +3 more
wiley   +1 more source

Perspectives of detection of deposits of diamonds in the Kuhotsko-Bilska area

Мінеральні ресурси України, 2018
The article presents the results of prospecting of diamond boring within the Kuhotsko-Bilska area, which is located on the north-western slope of the Ukrainian Shield.The data of the researches of 1995–2013 made it possible to form a new view on regional
Yu. V. Heiko, I. V. Tarasko, V. L. Prykhodko, V. V. Drozdetskyi, L. M. Shymkiv   +4 more
doaj   +1 more source

Integrated Seismic Refraction, Reflection, and Rayleigh Wave Imaging at Kilbourne Hole, New Mexico: Implications for Lunar Subsurface Exploration

Journal of Geophysical Research: Planets, Volume 130, Issue 6, June 2025.
Abstract Maars are volcanoes with a central crater surrounded by an ejecta ring formed through surface explosive processes from underlying magma interacting with fluids. The study of terrestrial maar volcanoes, as analogs to explosive volcanic vents on the Moon and other planets, can improve our understanding of planetary volcanism and evolution.
Jingchuan Wang, Nicholas C. Schmerr, Ernest R. Bell Jr., Naoma McCall, Vedran Lekić, Mong‐Han Huang, Jacob A. Richardson, Kelsey E. Young, Patrick L. Whelley, Stephen P. Scheidt, Molly L. Wasser, Caela Barry, Casey Braccia, Linden Wike, Jacob Giles, Shannon Rees, John D. West, Jose M. Hurtado, Tara Sweeney, Nohemi Valenzuela   +19 more
wiley   +1 more source