Results 71 to 80 of about 1,177 (180)

The Arequita formation (Lower Cretaceous): petrographic features of the volcanic facies in the Laguna Merín Basin, East Uruguay

Latin American Journal of Sedimentology and Basin Analysis, 2009
The southeastern border of the Laguna Merín Basin (Rocha Department, East Uruguay) consists of Mesozoic volcanic deposits of the Puerto Gómez and Arequita formations, overlain by a sedimentary cover of Cenozoic and recent deposits.
Rossana Muzio, Ethel Morales, Gerardo Veroslavsky, Bruno Conti   +3 more
doaj  

Chronology of the 2014–2016 Eruptive Phase of Volcán de Colima and Volume Estimation of Associated Lava Flows and Pyroclastic Flows Based on Optical Multi-Sensors

Remote Sensing, 2019
The eruption at Volcán de Colima (México) on 10–11 July 2015 represents the most violent eruption that has occurred at this volcano since the 1913 Plinian eruption.
Norma Dávila, Lucia Capra, Dolors Ferrés, Juan Carlos Gavilanes-Ruiz, Pablo Flores   +4 more
doaj   +1 more source

Krasheninnikov Caldera (Eastern Kamchatka): age and magnitude of eruption

Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле
New data on the composition of the pyroclastic deposits of the Krasheninnikov caldera allowed us to correlate it to the previously studied tephra horizon Geys30, which until recently was erroneously attributed to an eruption within the Geysernaya caldera.
V.V. Ponomareva, N.V. Gorbach, E.A. Zelenin, M.V. Portnyagin, A.N. Rogozin, O.V. Dirksen   +5 more
doaj   +1 more source

Debris Flow and Pyroclastic Flow at Unzen Volcano

JAPANESE JOURNAL OF MULTIPHASE FLOW, 1993
Unzen Volcano began to erupt in November 1990 after 198 years of dormancy and has remained active. Continuous growth of a lava dome and falls of lava rocks have resulted in frequent pyroclastic flows. Since a great volume of volcanic material has been deposited and scattered by the pyroclastic flows, debris flows have frequently occurred along the ...
openaire   +2 more sources

Calcite-saturated natrocarbonatites: composition, crystal morphology, and weathering

Volcanica
Interpretation of calcite-dominated fossil carbonatite volcanoes is complicated by the instability of many igneous carbonatite materials on Earth’s surface.
Michael Anenburg, Izzan Nur Aslam
doaj   +1 more source

Analysis of the 4 December 2021 lahar on Mount Semeru using optical and SAR remote sensing

International Journal of Applied Earth Observations and Geoinformation
This study characterizes the amplitude changes associated with the 4 December 2021 eruption of Mount Semeru and maps the resulting deposits using Sentinel-1 SAR backscatter and PlanetScope optical imagery.
Samuel McGowan, Jonathan Procter, Gabor Kereszturi, Fabien Albino, Indranova Suhendro   +4 more
doaj   +1 more source

Tingkat Kerusakan Hunian Akibat APG Erupsi Semeru di Desa Supiturang, Kabupaten Lumajang

RUAS
In Lumajang Regency, Indonesia, there are 11 potential natural disasters identified among 13 types of natural disasters. The eruption of Mount Semeru in 2021 was a significant disaster, resulting in extensive physical and non-physical damage.
Aulia Rachmah Syuaibah, Devina Balqis, Dhanar Dwi Fitriana, Subhan Ramdlani   +3 more
doaj   +1 more source

The footprint of column collapse regimes on pyroclastic flow temperatures and plume heights. [PDF]

Nat Commun, 2019
Trolese M, Cerminara M, Esposti Ongaro T, Giordano G.   +3 more
europepmc   +1 more source

Pyroclastic Flow Deposits on Venus as Indicators of Renewed Magmatic Activity. [PDF]

J Geophys Res Planets, 2017
Campbell BA, Morgan GA, Whitten JL, Carter LM, Glaze LS, Campbell DB.   +5 more
europepmc   +1 more source

Tondano Pyroclastic

Journal of Mathematical and Fundamental Sciences, 2019
. Recent A recent investigation into the volcanic geology of Minahasa revealed the existence and distribution of pyroclastic flow sheets of which origin and mode of emplacement are yet to be solved. These pyroclastic flow sheets are found covering nearly
M.T. Zen, Muziel Alzwar
doaj