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Mount Redoubt Seismic Webicorders Archived 2009-02-02 at the Wayback Machine (near-real time seismic record from station near peak) Satellite imagery of the 23, 24, and 26 March 2009 eruptions (CIMSS Satellite Blog) Time lapse video and photos of the March 27, 2009, eruption, taken from Ninilchik Archived June 4, 2009, at the Wayback Machine
The two main types of lava field structures are defined as sheet flow lava and pillow lava. Sheet flow lava appears like a wrinkled or folded sheet, while pillow lava is bulbous, and often looks like a pile of pillows atop one another. [2] An important aspect of lava flow morphology is a phenomenon known as lava flow inflation. This occurs in ...
The shape of effusive lava flows is governed by the type of lava (i.e. composition), rate and duration of eruption, and topography of the surrounding landscape. [ 3 ] For an effusive eruption to occur, magma must be permeable enough to allow the expulsion of gas bubbles contained within it.
Name Elevation Location Last eruption meters feet Coordinates; Malumalu: Last 8,000 years Ta‘u-931: 3054: 30,000 years ago [15]: Ofu-Olosega: 639: 2096: 1866 unnamed submarine cone eruption
The earliest known lava in this cycle is the Wapiti Lake flow of the Mount Jackson group, dated at 1.2187 ± 0.0158 million years, [67] exposed near the Grand Canyon of the Yellowstone and likely vented near Wapiti Lake. [68] Another flow, the Moose Creek Butte flow (1.1462 ± 0.0022 million years), also belongs to the Mount Jackson group. [69]
Lava flows from the Uinkaret volcanic field that have cascaded down into the Grand Canyon, damming the Colorado River, have been used to date the canyon's carving. [3] One of these cascades is today's Lava Falls. Lava Falls Rapid, below Lava Falls on the Colorado River, is "at all water levels, the most severe rapid in Grand Canyon." [4]
The volcanic field consists of two lava flows, the Broken Back flow and the Carrizozo lava flow (Carrizozo Malpais), the second youngest in New Mexico. [5] Both lava flows originated from groups of cinder cones. The Broken Back flow is approximately 16 kilometres (10 mi) long and the Carrizozo, one of the largest in the world, is 68 kilometres ...
Non-explosive eruptions of lava and less-violent explosive eruptions have occurred in and near the Yellowstone Caldera since the last super eruption. The most recent lava flow occurred about 70,000 years ago, while the largest violent eruption excavated the West Thumb of Lake Yellowstone around 150,000 years ago. Smaller steam explosions occur ...