A widespread, early Pleistocene tephra (Potaka tephra, 1 Ma) in New Zealand: Character, distribution, and implications [PDF]
Phil Shane
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Soluble silica in a tephra-derived spodosol in the mountainous region of Chichibu, Japan [PDF]
K. Sakagami +2 more
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Widely dispersed Quaternary tephra in Africa
Abstract Several prominent widespread Pleistocene tephra layers have been recognised and correlated across northern Kenya, Ethiopia and Uganda. A single unit has been correlated between Lake Turkana and the Gulf of Aden. Each of these tephra units represents the products of an eruption of at least 4 km3 of magma. The number of active volcanoes within
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Krasheninnikov Caldera (Eastern Kamchatka): age and magnitude of eruption
New data on the composition of the pyroclastic deposits of the Krasheninnikov caldera allowed us to correlate it to the previously studied tephra horizon Geys30, which until recently was erroneously attributed to an eruption within the Geysernaya caldera.
V.V. Ponomareva +5 more
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Tephra and the Quaternary History of the Mountainous Area along the Sagami River in Central Japan I
Koichi Minagawa
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Dynamics, Monitoring, and Forecasting of Tephra in the Atmosphere
AbstractExplosive volcanic eruptions inject hot mixtures of solid particles (tephra) and gasses into the atmosphere. Entraining ambient air, these mixtures can form plumes rising tens of kilometers until they spread laterally, forming umbrella clouds. While the largest clasts tend to settle in proximity to the volcano, the smallest fragments, commonly ...
Pardini, F. +7 more
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Landslides in sensitive soils, Tauranga, New Zealand. [PDF]
In the Tauranga region sensitive soil failures commonly occur after heavy rainfall events, causing considerable infrastructure damage. Several notable landslides include a large failure at Bramley Drive, Omokoroa in 1979, the Ruahihi Canal collapse in ...
Cunningham, Michael J. +5 more
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Tephra and the Quaternary History of the Mountainous Area along the Sagami River in Central Japan II
Koichi Minagawa
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Distribution of Quaternary Tephra in Japan
The Japanese Committee on Tephrochronology made a distribution map of the Quaternary volcanic products in Japan (Fig. 1, original scale :1/2, 000, 000). As the compiler of this map, the author gives some descriptive notes about the distribution and the related problems.1.
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Method of Age Determination of Holocene Tephra from the View Point of Soil Science
Shinobu YAMADA
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