Results 81 to 90 of about 32,694 (262)

Investigating Technology and Raw Materials Source of the Archaic and Classical Architectural Terracottas From the Athenaion in Castro (Apulia, Italy)

open access: yesArchaeometry, Volume 68, Issue 3, Page 512-526, June 2026.
ABSTRACT Since 2000, archaeological excavations have brought to light the sanctuary of Athena in Castro (Apulia, Italy), including terracotta roofs dated between the 6th and 4th centuries bce. Based on their morphological and stylistic features, it is suggested that the terracotta items were manufactured in the Greek colony of Taras (modern Taranto ...
M. M. N. Franceschini   +7 more
wiley   +1 more source

Ages on weathered Plio-Pleistocene tephra sequences, western North Island, New Zealand [PDF]

open access: yes, 2001
Using the zircon fission-track method, we have obtained five ages on members of two strongly-weathered silicic, Pliocene-Pleistocene tephra sequences, the Kauroa and Hamilton Ash formations, in western North Island, New Zealand.
Briggs, Roger M.   +5 more
core   +1 more source

Temporal Change in Resistivity Structure Before and After the 2018 Small Phreatic Eruption Iwo‐Yama Volcano, Kirishima Volcanic Complex, Japan

open access: yesGeophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract A small phreatic eruption occurred on April 2018 Iwo‐yama, Kirishima volcanic complex, Japan. We estimated the change in the subsurface resistivity structure before and after the phreatic eruption by repeated magnetotelluric (MT) measurements. A substantial decrease in resistivity was determined in the zone from the surface down to a depth of ...
K. Aizawa, N. Matsushima, Y. Matsunaga
wiley   +1 more source

Evidence for the relative depths and energies of phreatomagmatic explosions recorded in tephra rings

open access: yesBulletin of Volcanology, 2017
Experimental work and field observations have inspired the revision of conceptual models of how maar-diatreme eruptions progress and the effects of variable energy, depth, and lateral position of explosions during an eruption sequence.
A. Graettinger, G. Valentine
semanticscholar   +1 more source

Origin and significance of ice‐rafted detritus in the Atlantic sector of the Southern Ocean

open access: yesGeochemistry, Geophysics, Geosystems, 2007
Piston core TN057‐14 from the eastern Atlantic sector of the Southern Ocean contains several layers rich in volcanic tephra that were deposited during the last glacial period.
Simon H. H. Nielsen   +4 more
doaj   +1 more source

Volcanic Fluxes Over the Last Millennium as Recorded in the Gv7 Ice Core (Northern Victoria Land, Antarctica)

open access: yesGeosciences, 2020
Major explosive volcanic eruptions may significantly alter the global atmosphere for about 2−3 years. During that period, volcanic products (mainly H2SO4) with high residence time, stored in the stratosphere or, for shorter times, in the ...
Raffaello Nardin   +7 more
doaj   +1 more source

Unravelling upbuilding pedogenesis in tephra and loess sequences in New Zealand using tephrochronology [PDF]

open access: yes, 2010
The genesis of soils developed in either tephra or loess on stable sites differs markedly from that of soils developed on rock because classical topdown processes operate in conjuction with geological processes whereby material is added to the land ...
Lowe, David J., Tonkin, Philip J.
core   +1 more source

A chironomid-based reconstruction of summer temperatures in NW Iceland since AD 1650 [PDF]

open access: yes, 2011
Few studies currently exist that aim to validate a proxy chironomid-temperature reconstruction with instrumental temperature measurements. We used a reconstruction from a chironomid percentage abundance data set to produce quantitative summer temperature
Caseldine, C.J.   +5 more
core   +1 more source

Reconstructing the Holocene explosive eruptive history of the Erciyes volcano (Turkey) using proximal and distal tephra records

open access: yesJournal of Quaternary Science, Volume 41, Issue 4, Page 645-659, May 2026.
ABSTRACT Mount Erciyes, the largest active volcano of Central Anatolia (Turkey), erupted explosively during the Holocene, producing the Karagüllü, Perikartin and Dikkartin tuff rings. Even though major cities like Kayseri and its ~1 million residents sit directly on these pyroclastic deposits, the timing and magnitude of the explosive eruptions have ...
Ivan Sunyé‐Puchol   +12 more
wiley   +1 more source

Palynology, vegetation and climate of the Waikato lowlands, North Island, New Zealand, since c. 18,000 years ago [PDF]

open access: yes, 1989
The vegetational and climatic history of the Waikato lowlands during the last c. 18,000 years is inferred from the palynology of sediment cores from Lakes Rotomanuka, Rotokauri, and Okoroire.
Green, John D.   +2 more
core   +2 more sources

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