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

