Results 61 to 70 of about 14,904 (246)

Geo-material provenance and technological properties investigation in Copper Age menhirs production at Allai (central-western Sardinia, Italy) [PDF]

open access: yes, 2017
During the 2nd millennium BC anthropomorphic menhirs belonging to a 3rd millennium BC sanctuary were reused as building material in the Arasseda Nuraghe (Sardinia, Italy).
Cannas, Carla   +2 more
core   +1 more source

The fluidization behaviour of ignimbrite at high temperature and with mechanical agitation [PDF]

open access: yes, 2004
Experiments were carried out to study the fluidization behaviour of ignimbrite at high temperature and while being mechanically agitated. Geldart group C behaviour occurs up to 565 degreesC when the material is subjected to increasing gas flow ( without ...
Bruni, G   +3 more
core   +1 more source

Modeling the Transport and Dispersion of Volcanic Co‐PDC Ash Clouds Using NAME: An Evaluation of Source Geometry and Mass Eruption Rate

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 6, 28 March 2026.
Abstract Pyroclastic density currents (PDCs) are gravity currents that frequently form during explosive volcanic eruptions. These ground‐hugging density currents consist of high‐temperature mixtures of pyroclasts (e.g., ash, pumice), lithics, and gas.
M. Hagenbourger   +3 more
wiley   +1 more source

Geological and Geomorphological Evaluation of Melendiz Stream Basin

open access: yesSelçuk Üniversitesi Sosyal Bilimler Enstitüsü Dergisi, 2018
The research area is the Melendiz Stream Basin in Aksaray. Melendiz Stream Basin is located in the Lake Tuz Closed Endorheic Basin. The Ihlara Valley part of the basin is included in the Cappadocia tourism zone.
Halil Mesut Baylak, Recep Bozyiğit
doaj  

Magma volume, volatile emissions, and stratospheric aerosols from the 1815 eruption of Tambora [PDF]

open access: yes, 2004
We suggest that the Tambora 1815 eruption was smaller than previously thought, yielding 30–33 km3 of magma. Valuable insight into the eruption is gained by comparing it to the much smaller 1991 Pinatubo event, which had a similar eruption style and rate.
Gertisser, R.   +4 more
core   +1 more source

New Zealand Geological Timescale 2025

open access: yesNew Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
New Zealand Geological Timescale 2025 (NZGT 2025) is the first comprehensive update and revision of the New Zealand Geological Timescale in a decade. The criteria used to establish age ranges of New Zealand Stages within the NZGT have been reviewed, calibrated, and revised where required against the 2023/04 International Chronostratigraphic Chart and ...
Christopher D. Clowes   +13 more
wiley   +1 more source

Volcanological evolution of Pantelleria Island (Strait of Sicily) peralkaline volcano: a review

open access: yesComptes Rendus. Géoscience, 2021
Pantelleria volcano has a particularly intriguing evolutionary history intimately related to the peralkaline composition of its explosively erupted magmas.
Rotolo, Silvio G.   +5 more
doaj   +1 more source

Assessment of Empirical CPT–Vs Correlations using Direct‐Push Crosshole Data from Shallow New Zealand Soil Deposits

open access: yesNew Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
This article assesses the performance of multiple cone penetration test–shear wave velocity (CPT–Vs) correlations based on a database of over 2,100 CPT–Vs data pairs obtained from co‐located shallow (≤10 m) CPT soundings and direct‐push crosshole tests in New Zealand.
Hui Zhou   +3 more
wiley   +1 more source

Project 0907: INTREPID – Enhancing tephrochronology as a global research tool through improved fingerprinting and correlation techniques and uncertainty modelling [PDF]

open access: yes, 2010
In May, 2010, the inter-congress meeting of the INQUA International focus group on tephrochronology and volcanism (INTAV) was held in Kirishima City, southern Kyushu, Japan.
Lowe, David J.
core  

Landslide inventory, Teziutlán municipality, Puebla, México (1942–2015)

open access: yesJournal of Maps, 2017
This article describes the spatial distribution of landslides in Teziutlán, Puebla, Mexico, which has been historically affected by mass movement processes. The most significant disaster associated with landslides in October 1999.
Franny G. Murillo-García   +1 more
doaj   +1 more source

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