File:Guadalupe_Tuff.jpg · Wikimedia Commons · See Wikimedia Commons
Also known as volcanic tuff
thumb|Cliff face of welded tuff pockmarked with holes — some natural, some man-made — from Bandelier National Monument, [[New Mexico]] thumb|Etruscan architecture|Etruscan tuff blocks from a tomb at [[Banditaccia, Italy]] thumb|upright|A house constructed of tuff blocks in Rieden, Rhineland-Palatinate, in the [[Volcanic Eifel region, Germany]]
Tuff is a type of rock formed from volcanic ash that has been compacted and sometimes fused together by heat. It has been used historically as a building material, as seen in structures ranging from Etruscan tombs to houses in volcanic regions like Germany and the American Southwest.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Rock.name
- Tuff
- Rock.type
- Igneous
- Rock.image
- Guadalupe Tuff.jpg
- Rock.caption
- Tuff from the Guadalupe Formation in Luzon, Philippines
- Rock.composition
- Volcanic ash
- Rock.composition_secondary
- Quartz, feldspars (sanidine, anorthoclase, plagioclase), biotite, pyroxene (augite), hornblende, and magnetite
- Rock.class
- Mafic to felsic
- Rock.texture
- Pyroclastic or Eutaxitic
via Wikipedia infobox
Wikidata facts
- Subclass of
- pyroclastic rock
- Material used
- volcanic ash
- Image
- HoleInTheWallTuff.JPG
Show 4 more facts
- Commons category
- Tuff
- different from
- tufa
- on focus list of Wikimedia project
- Wikipedia:Vital articles/Level/4
- exact match
- purl.obolibrary.org/obo/ENVO_01000661
via Wikidata · CC0
Article · 中文
凝灰岩是種火山碎屑岩，其组成的火山碎屑物質有過半顆粒直徑小於2毫米的火山塵和火山灰壓實固結而成，成分主要是火山灰，外貌疏鬆多孔，粗糙，有，颜色多樣，有黑色、紫色、红色、白色、淡绿色等，根據其火山碎屑成分可分為： * 晶屑凝灰岩； * 玻屑凝灰岩； * 岩屑凝灰岩。 凝灰岩是常用建筑材料，也可以作为制造水泥的原料和提取钾肥的原料。 凝灰岩向熔岩過渡的類型，稱為凝灰熔岩，火山碎屑物質含量少於一半。 火山灰凝固成岩為凝灰岩（tuff）。台北公館、三張犂與六張犁一帶之山坡地，出現有凝灰岩露頭，富灰燼狀氣孔，風化者相當鬆軟，故多墳墓。
Abstract from DBpedia / Wikipedia · CC BY-SA
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