Results 121 to 130 of about 3,902 (277)
Journal 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
A framework for in‐stream jams formed by snow avalanche‐delivered large wood
Earth Surface Processes and Landforms, Volume 51, Issue 3, March 2026.Large wood delivered by avalanches organizes into blanket or transport jam complexes.Jam complexes increase channel width and promote pool and bar formation. Avalanche frequency and magnitude, which are dependent on hillslope angle and roughness characteristics, controls jam complex type.
Nathaniel H. Cutler +2 more
wiley +1 more source
Geoarchaeology, Volume 41, Issue 2, March/April 2026.ABSTRACT This paper presents the results of minero‐petrographic and chemical analyses of pottery and potential local raw materials from Ustica, a small volcanic island off the coast of Palermo (Sicily), inhabited during the Middle Neolithic. Typologically, the pottery shows cultural connections to the Bicromica and Serra d'Alto traditions, linking ...
G. Montana +6 more
wiley +1 more source
Shell‐Dense Island Off Culasawani, Vanua Levu Island, Fiji: Midden or Muddle?
Geoarchaeology, Volume 41, Issue 2, March/April 2026.ABSTRACT Investigations of a 3000 m2 shell‐dense island surrounded by mangroves off the coast of Culasawani, a very lightly inhabited part of northern Vanua Levu Island in Fiji, suggest it is likely to be a ‘midden island’ rather than a (tsunami) wave deposit.
Patrick D. Nunn +9 more
wiley +1 more source
Geoarchaeology, Volume 41, Issue 2, March/April 2026.ABSTRACT This study presents new evidence for the early use of lime mortar during the Early Iron Age at the Piscina Torta site (Ostia, Italy), situated on the earliest Holocene beach ridges in the southern Tiber delta. The site, which was earlier described as a briquetage site, dates from between the late 8th and 6th century BCE and consists of a large
Francesca Bulian +5 more
wiley +1 more source
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.The Pool Burn basin is a tectonic depression that became almost isolated from the regional drainage system by river reorientation during Pleistocene uplift of surrounding ridges. Consequently, detrital gold in the basin was largely locally derived, from supergene zones on orogenic deposits and recycled from paleoplacers in erosional remnants of Miocene
Marshall Palmer, Dave Craw
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New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.Late Cenozoic silty and sandy sediments in the semi‐arid Mackenzie basin have been eroded and redeposited almost entirely from nearby Mesozoic greywacke basement. Fine (commonly micron scale) phyllosilicate flakes, including clays, are randomly distributed and randomly oriented, and the sediments are porous.
Dave Craw, Cathy Rufaut, Marshall Palmer
wiley +1 more source
A study of presolar material in hydrated lithic clasts from metal‐rich carbonaceous chondrites [PDF]
, 2017 J. Leitner, P. Höppe, J. Zipfel
openalex +1 more source
New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.The deposition of the sandstone sedimentary succession of the Beacon Supergroup lasted more than 200 Myr (Devonian to Early Jurassic) in Victoria Land and nearby territories in the so‐called Transantarctic Basin, recording crucial events in the history of the Earth.
Luca Zurli +7 more
wiley +1 more source