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Geoscientists have discovered the first direct evidence that material from deep within Earth's mantle transition zone -- a layer rich in water, crystals and melted rock -- can percolate to the surface...
When dormant volcanoes are about to erupt, they show some predictive characteristics—seismic activity beneath the volcano starts to increase, gas escapes through the vent, or the surrounding ground st...
Expedition to the Aleutian Islands:Geoscientists head to remote Alaska volcanoes
the Aleutian Islands Geoscientists head Alaska volcanoes
2015/8/13
This is the 11th part in a series on NSF's geosciences risk and resilience interest area. Please see parts one, two, three,four, five, six, seven, eight, nine...
Three quarters of Earth's volcanic activity occurs beneath the sea, predominantly along the extensive mid-ocean ridge system that winds its way through the major ocean basins. The style of eruptive ac...
Volcanoes, including Mount Hood, can go from dormant to active quickly（图）
Volcanoes including Mount Hood dormant
2014/3/20
A new study suggests that the magma sitting 4-5 kilometers beneath the surface of Oregon's Mount Hood has been stored in near-solid conditions for thousands of years, but that the time it takes to liq...
Geochemical Characteristics of Mafic and Intermediate Volcanic Rocks from the Hasandağ and Erciyes Volcanoes (Central Anatolia, Turkey)
Central Anatolia collision volcanism lithospheric delamination Turkey
2009/7/7
Hasandağ and Erciyes stratovolcanoes, which are the two important stratovolcanoes in Central Anatolia, erupted volcanic products with both calc-alkaline and alkaline compositions, although the c...
Fluxes of volatiles (H2O, CO2, N2, Cl, F) from arc volcanoes
volcanoes fluxes water halogens sources
2017/8/10
This review gives an overview of the estimates of volatile emissions from arc and mid-ocean ridge volcanoes to the atmosphere and hydrosphere with particular focus on H2O, CO2, N2, Cl and F. The gas c...