- palagonite-tuff
- palagˈonite-tuff nounA tuff composed of fragments of palagonite• • •Main Entry: ↑palagonite
Useful english dictionary. 2012.
Useful english dictionary. 2012.
Palagonite — is an alteration product from the interaction of water with volcanic glass of chemical composition similar to basalt. Palagonite can also result from the interaction between water and basalt melt. The water flashes to steam on contact with the… … Wikipedia
Tuff — (from the Italian tufo ) is a type of rock consisting of consolidated volcanic ash ejected from vents during a volcanic eruption. Tuff should not be confused with tufa , another type of rock. Volcanic ashThe products of a volcanic eruption are… … Wikipedia
Hualālai — View of Hualālai over 1800 lava flow Elevation 8,271 ft (2,521 m) … Wikipedia
Sideromelane — is a vitreous basaltic volcanic glass, usually occurring in palagonite tuff, for which it is characteristic. It is a less common form of tachylite, with which it usually occurs together; however it lacks the iron oxide crystals dispersed in the… … Wikipedia
Snæfellsjökull — Infobox Mountain Name = Snæfellsjökull Photo = Snaefellsnes Snaefellsjökull Summit 20030529.jpg Caption = The summit of Snæfellsjökull Elevation = 1,446 m (4,744 ft) Location = Snæfellsnes peninsula, western Iceland Range = Prominence = >1,200 m… … Wikipedia
Tachylite — (also spelled tachylyte) is a vitreous form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of molten basalt. It is a basic type of igneous rock that is decomposable by acids and readily fusible. The color is a… … Wikipedia
Fort Rock Basin — 280px Hole in the Ground, a maar in Fort Rock Basin Elevation 4,331–5,630 ft (1,320–1,716 m) [1] … Wikipedia
Volcanic glass — A sand grain of volcanic glass under the petrographic microscope. Its amorphous nature makes it go extinct in cross polarized light (bottom frame). Scale box in millimeters. Volcanic glass is the amorphous (uncrystallized) product of rapidly… … Wikipedia
Richard L. Hay — Richard LeRoy Hay (April 29 1929 ndash; February 10 2006) was an American geologist whose most famous work was as the principal geologist working with Mary Leakey at Olduvai Gorge, the site of many important hominid finds in the study of human… … Wikipedia
Mafic — is an adjective describing a silicate mineral or rock that is rich in magnesium and iron; the term is a portmanteau of the words magnesium and ferric .[1] Most mafic minerals are dark in color and the relative density is greater than 3. Common… … Wikipedia