Suchergebnisse - "Volcanic ash"

Inter-laboratory comparison within the RESORAD Italian network on the natural occurring radioactive materials (NORMs).

Autoren: Fontani, Sonia Innocenzi, Valeria Menna, Giuseppe et al.

Quelle: EPJ Web of Conferences. 11/6/2025, Vol. 338, p1-4. 4p.

Schlagwörter: *RADIOACTIVE substances, *VOLCANIC ash, tuff, etc., *BACKGROUND radiation, *UNITS of measurement, *REPLICATION (Experimental design)

Geografische Kategorien: ITALY, LAZIO (Italy)

Palynological, tephra, and ¹⁴C records from southern Kaitoke, Great Barrier (Aotea) Island, New Zealand, since c. 30,000 cal. yr BP.

Autoren: Horrocks, Mark Ogden, John Deng, Yanbin et al.

Quelle: New Zealand Journal of Botany. Dec2025, Vol. 63 Issue 5, p1096-1114. 19p.

Schlagwörter: *PALYNOLOGY, *VOLCANIC ash, tuff, etc., *RELATIVE sea level change, *BARRIER islands, *RADIOCARBON dating, *PLEISTOCENE Epoch

Geografische Kategorien: NEW Zealand

Tridymite formation as a direct consequence of explosive volcanism – evidence preserved in tuffisite veins and concurrently erupted volcanic ash.

Autoren: Auer, Andreas Belousov, Alexander Belousova, Marina et al.

Quelle: New Zealand Journal of Geology & Geophysics. Dec2025, Vol. 68 Issue 4, p707-721. 15p.

Schlagwörter: *EXPLOSIVE volcanic eruptions, *VOLCANIC ash, tuff, etc., *MAGMAS, *CRYSTALLIZATION, *VOLCANOES, *SILICATE minerals

Geografische Kategorien: RUSSIA

A new 'Southern Giant Crab' from a miocene continental slope palaeoenvironment at Taranaki, North Island, New Zealand.

Autoren: van Bakel, Barry W. M. Ossó, Àlex

Quelle: New Zealand Journal of Geology & Geophysics. Dec2025, Vol. 68 Issue 4, p628-639. 12p.

Schlagwörter: *MIOCENE Epoch, *VOLCANIC ash, tuff, etc., *CRABS, *BENTHIC ecology, *ABYSSAL zone

Geografische Kategorien: TARANAKI Basin (N.Z.), TARANAKI (N.Z.), NEW Zealand, NORTH Island (N.Z.)

Magma fragmentation and tephra deposition from a small-volume phreatomagmatic eruption: Blue Lake crater, Oregon, USA.

Autoren: Leiter, Sophia Ross, Pierre-Simon Johnson, Emily R.

Quelle: Bulletin of Volcanology. Nov2025, Vol. 87 Issue 11, p1-27. 27p.

Schlagwörter: *EXPLOSIVE volcanic eruptions, *VOLCANIC ash, tuff, etc., *CRATER lakes, *MAGMAS, *EVENT stratigraphy, *HAZARDS

Geografische Kategorien: OREGON

Deformation properties of red mud-reinforced volcanic ash under long-term cyclic loading.

Autoren: Liu, Hailiang Wang, Changming Wu, Di et al.

Quelle: Acta Geotechnica. Oct2025, Vol. 20 Issue 10, p5159-5184. 26p.

Schlagwörter: *VOLCANIC ash, tuff, etc., *CYCLIC loads, *MATERIAL plasticity, *MUD, *WASTE recycling, *ELASTICITY, *SHEAR strength, *ROCK deformation

Preparation and thermal performances of polyethylene glycol/tuff/boron nitride composite phase change materials.

Autoren: Shen, Jianfen Song, Qiang Liu, Xing et al.

Quelle: Journal of Thermal Analysis & Calorimetry. Oct2025, Vol. 150 Issue 19, p14937-14946. 10p.

Schlagwörter: *POLYETHYLENE glycol, *VOLCANIC ash, tuff, etc., *PHASE change materials, *THERMAL stability, *THERMAL conductivity, *COMPOSITE materials, *ENERGY management, *BORON nitride

Petrotectonics of Thoen Plutonic Rocks, Lampang Province, Eastern Granitic Belt of Thailand.

Autoren: Jundee, Patcharin Kosuwan Phajuy, Burapha Limtrakun, Phisit et al.

Quelle: Trends in Sciences. Oct2025, Vol. 22 Issue 10, p1-16. 16p.

Schlagwörter: *IGNEOUS rocks, *VOLCANIC ash, tuff, etc., *GRANITE, *MAFIC rocks, *MONZONITE, *IGNEOUS intrusions

Using x-ray fluorescence to identify Mazama ash in the Lake Bonneville basin, Utah, USA.

Autoren: Jones, Kaylee Barket Drake, Brandon Lee Hart, Isaac et al.

Quelle: Holocene. Oct2025, Vol. 35 Issue 10, p1057-1067. 11p.

Schlagwörter: *X-ray fluorescence, *VOLCANIC ash, tuff, etc., *LAKES, *ENVIRONMENTAL history, *GEOCHEMISTRY, *HOLOCENE Epoch

Geografische Kategorien: UTAH

A significant gem corundum deposit in rhyolitic ignimbrite: the enigmatic Rock Creek sapphire deposit, Montana, USA.

Autoren: Belley, Philippe M. Broders, Jake

Quelle: Mineralium Deposita. Oct2025, Vol. 60 Issue 7, p1503-1521. 19p.

Schlagwörter: *CORUNDUM, *VOLCANIC ash, tuff, etc., *EOCENE Epoch, *WEATHERING, *VOLCANOLOGY

Geografische Kategorien: MONTANA, UNITED States

Construction of average S-wave velocity maps using simplified microtremor method: case study of area with pyroclastic flow deposits to the east of Aso caldera, Japan.

Autoren: Cho, Ikuo Hoshizumi, Hideo Kawabata, Daisaku et al.

Quelle: Geophysical Journal International. Oct2025, Vol. 243 Issue 1, p1-17. 17p.

Schlagwörter: *BODY waves (Seismic waves), *VOLCANIC ash, tuff, etc., *RAYLEIGH waves, *PHASE velocity, *DATA logging

Effervescent fountaining—a transition between explosive and lava-dome forming eruptions: evidence from "boiling-over" pyroclastic flows from the March 2019 eruption of Bezymianny volcano, Kamchatka.

Autoren: Auer, Andreas Walter, Thomas R. Ostorero, Lea et al.

Quelle: Bulletin of Volcanology. Oct2025, Vol. 87 Issue 10, p1-19. 19p.

Schlagwörter: *VOLCANIC eruptions, *VOLCANIC ash, tuff, etc., *STRATOVOLCANOES, *HISTORY of geology, *PARTICLE size distribution

Geografische Kategorien: KAMCHATKA Peninsula (Russia)

渤海深部中生界火山岩探井钻井关键技术.

Alternate Title: Key Drilling Technologies for Exploratory Wells in Deep Mesozoic Volcanic Rocks in Bohai Oilfield.

Autoren: 徐 鲲 刘宝生 李庄威 et al.

Quelle: Petroleum Drilling Techniques. Jun2025, Vol. 53 Issue 3, p77-83. 7p.

Schlagwörter: VOLCANIC ash, tuff, etc., DRILLING fluids, DRILLING muds, MESOZOIC Era

1.38 Ga Four‐Layer Tuff Marker Horizon in North China black Shales as a Chronostratigraphic Boundary for the Pre‐Ediacaran Geological Timescale.

Autoren: Zhang, Shuan‐Hong Kamo, Sandra L. Ernst, Richard E. et al.

Quelle: Geophysical Research Letters. 9/16/2025, Vol. 52 Issue 17, p1-11. 11p.

Schlagwörter: *CHRONOSTRATIGRAPHY, *VOLCANIC ash, tuff, etc., *VOLCANIC eruptions, *GEOLOGICAL time scales, *BLACK shales, *PRECAMBRIAN, *CRATONS

Geografische Kategorien: CHINA

Sample Origin Effect on Chemical Reactivity of Tajogaite Volcanic Ashes for Ancient Mortar Repair.

Autoren: Basar, Imren Torrens-Martín, David Fernández-Carrasco, Lucía et al.

Quelle: Sustainable Chemistry. Sep2025, Vol. 6 Issue 3, p18. 21p.

Schlagwörter: *VOLCANIC ash, tuff, etc., *CONSTRUCTION materials, *HYDRATION, *MICROSTRUCTURE, *VOLCANOES, *CHEMICAL kinetics, *CEMENT admixtures

Pedogenesis of a coastal climosequence and a volcanic ash‐influenced elevational transect of western Haleakalā, Maui.

Autoren: Hodges, Ryan C. Boettinger, Janis L. Deenik, Jonathan L.

Quelle: Soil Science Society of America Journal. Sep/Oct2025, Vol. 89 Issue 5, p1-33. 33p.

Schlagwörter: *SOIL formation, *VOLCANIC ash, tuff, etc., *CLIMATE change, *ECOSYSTEMS, *ALTITUDES, *VOLCANOES, *COASTAL ecology

Geografische Kategorien: MAUI (Hawaii), HALEAKALA (Hawaii)

Alkali-Füzyon Yöntemiyle Aktive Edilen Volkanik Küller ile Geopolimer Üretimi.

Alternate Title: Geopolymer Synthesis from Volcanic Ash Activated via Alkali-Fusion.

Autoren: DEMİREL, Merve KARAASLAN, Cemal

Quelle: Journal of the Institute of Science & Technology / Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi. Sep2025, Vol. 15 Issue 3, p975-985. 11p.

Schlagwörter: *VOLCANIC ash, tuff, etc., *COMPRESSIVE strength, *CRYSTAL structure, *ALKALIES, *POWDERS

Constraining the Baltic Sea sediment chronology using tephrochronology.

Autoren: Müller, Daniela J. M. Neugebauer, Ina Kearney, Rebecca J. et al.

Quelle: Geology. Sep2025, Vol. 53 Issue 9, p743-747. 5p.

Schlagwörter: *RADIOCARBON dating, *VOLCANIC ash, tuff, etc., *TEPHROCHRONOLOGY, *CARBON isotopes, *CLIMATE change

Optimization of Sample Preparation Methods to Improve the Efficiency of Nanoparticle Extraction from Environmental Samples.

Autoren: Brzhezinskii, A. S. Ermolin, M. S. Karandashev, V. K. et al.

Quelle: Journal of Analytical Chemistry. Sep2025, Vol. 80 Issue 9, p1532-1542. 11p.

Schlagwörter: *VOLCANIC ash, tuff, etc., *FIELD-flow fractionation, *DEIONIZATION of water, *ENVIRONMENTAL sciences, *NANOPARTICLES

Effects of a Recent Volcanic Eruption on Facilitation Networks in Shrublands of Northwest Patagonia, Argentina.

Autoren: de Paz, Manuel Carruitero, Matías Gobbi, Miriam E. et al.

Quelle: Journal of Vegetation Science. Sep/Oct2025, Vol. 36 Issue 5, p1-15. 15p.

Schlagwörter: *VOLCANIC eruptions, *VOLCANIC ash, tuff, etc., *PLANT species, *SHRUBLANDS, *HABITATS, *ANIMAL-plant relationships

Geografische Kategorien: ARGENTINA, PATAGONIA (Argentina & Chile)