- pumice tuff
- 浮石凝灰岩
English-Chinese geology dictionary (英汉地质大词典). 2013.
pumice tuff
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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
tuff — tuff1 /tuf/, adj. Slang. tough (def. 13). tuff2 tuffaceous /tu fay sheuhs/, adj. /tuf/, n. Geol. a fragmental rock consisting of the smaller kinds of volcanic detritus, as ash or cinder, usually more or less stratified. Also called volcanic tuff … Universalium
Mount Pleasant Caldera — Elevation approx. 248 m (814 ft) Listing List of volcanoes in Canada … Wikipedia
Ignimbrite — is a volcanic pyroclastic rock, often of dacitic or rhyolitic composition. Ignimbrite is the deposit of a pumice rich pyroclastic density current, or pyroclastic flow , a hot suspension of particles and gases that flows rapidly from a volcano,… … Wikipedia
Mono–Inyo Craters — Coordinates: 37°53′N 119°0′W / 37.883°N 119°W / 37.883; 119 … Wikipedia
volcano — /vol kay noh/, n., pl. volcanoes, volcanos. 1. a vent in the earth s crust through which lava, steam, ashes, etc., are expelled, either continuously or at irregular intervals. 2. a mountain or hill, usually having a cuplike crater at the summit,… … Universalium
Geology of Jersey — The geology of Jersey is characterised by the Late Proterozoic Brioverian volcanics, the Cadomian Orogeny, and only small signs of later deposits from the Cambrian and Quaternary periods. The kind of rocks go from conglomerate to shale, volcanic … Wikipedia
Mount Meager — The Mount Meager volcanic complex rising above the Pemberton Valley. Summits left to right are Capricorn Mountain, Mount Meager proper and Plinth Peak … Wikipedia
Mount Mazama — collapsed a large caldera, which was later filled with Crater Lake. Elevation 8,159 ft … Wikipedia
Fiamme — are lens shapes, usually mm to cm in size, seen on surfaces of some volcaniclastic rocks. They can occur in welded pyroclastic fall deposits and in ignimbrites, which are the deposits of pumiceous pyroclastic density currents. The name fiamme… … Wikipedia
Phreatomagmatic eruption — Phreatomagmatic eruptions are defined as juvenile forming eruptions as a result of interaction between water and magma. They are different from magmatic and phreatic eruptions. The products of phreatomagmatic eruptions contain juvenile clasts,… … Wikipedia
