Lava Flows

Some articles on lava flows, flows, lava:

Geology Of Tasmania - Geological History - Tertiary - Basalt
... Lava flows of basalt up to 20 meters thick were formed ... has an alkali basalt from 24.2 million years ago but it also has younger flows of olivine tholeiites ... In north east Tasmania, there are many lava flows from middle Eocene to early Miocene ...
Iskut-Unuk River Cones
... The lava flows date back 70,000 years, but the subaerial vents produced cinder cones and lava flows that were probably all active between about 9000 and a few hundred years ago ... The last lava flows were erupted from The Volcano about 150 years ago ... Iskut Canyon Cone produced at least 10 thick lava flows which initially dammed the Iskut River ...
Level Mountain Range - Geology - Eruptive History - Shield Volcano Eruptive Period
... The shield volcano forms a broad cliff-bounded lava plateau, 70 km (43 mi) long and 45 km (28 mi) wide, with an average thickness of 750 m (2,461 ft) and an elevation of 1,400 m (4,593 ft) on the ... of four distinctive stratigraphic units dominated by 1 to 8 m thick basaltic lava flows separated by thin discontinuous breccias, sporadic tuff horizons ... Ropy pahoehoe lava flows predominate over blocky aa lava flows, breccias, and tuffs, attesting to a fluid and effusive character for the volcanism ...
Silverthrone Caldera - Volcanic Hazards - Lava Flows
... and exceptionally rugged part of the Coast Mountains, danger from lava flows would be low to moderate ... slowly and typically cover small areas to form steep-sided mounds called lava domes ... Lava domes often grow by the extrusion of many individual flows less than 30 metres (98 ft) thick over a period of several months or years ...
Lava Cave - Types
... There are many types of lava caves, with these being the most notable Lava tubes are the most common and most extensive kind of lava cave ... Lava tubes usually form in pahoehoe lava flows, though exceptions exist ... As the lava is emitted from the vent area, it spreads in the path of least resistance ...

Famous quotes containing the words flows and/or lava:

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    We walk on molten lava on which the claw of a fly or the fall of a hair makes its impression, which being received, the mass hardens to flint and retains every impression forevermore.
    Ralph Waldo Emerson (1803–1882)