pahoehoe


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pahoehoe:

see lavalava
, molten rock that erupts on the earth's surface, either on land or under the ocean, by a volcano or through a fissure. It solidifies into igneous rock that is also called lava.
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pahoehoe

[pə′hō·ē‚hō·ē]
(geology)
A type of lava flow whose surface is glassy, smooth, and undulating; the lava is basaltic, glassy, and porous. Also known as ropy lava.
References in periodicals archive ?
If the cavansite-bearing pahoehoe rock had been quarried since the early days of large-scale exploitation of the Wagholi zone, cavansite specimens from Wagholi would have been as abundant as, say, fluorapophyllite from Jalgaon or stilbite-stellerite from Nasik have been since about 1980.
Pahoehoe lava flows appear to look like shiny, smooth ribbons of cake batter.
Pahoehoe is the hottest and most fluid of any type of lava; it has been compared to hot fudge poured from a pan.
7) Fields of pahoehoe lava resemble a pan of just-baked brownies.
This hypothesis is supported by data of Chadwick and colleagues who observed changes in soil mineralogy across a steep precipitation gradient on a 170 000-yr-old pahoehoe flow of Hawi Volcanics (Chadwick et al.
High temperature pahoehoe flows near vents have smooth "ropey" surfaces (Williams and McBirney, 1979, pp.
Some poorly crystallized specimens have a habit resembling ropy lava or pahoehoe, with well-developed crystals extruding out along the ridges of the "flow.
Hawaiian volcanoes produce two kinds of lava, a smooth lava called Pahoehoe (pronounced pah HOH ee hoh ee) and a rough form called `A'a (pronounced AH ah).
Fountaingrass establishes locally in depressions in the pahoehoe lava where well-drained lithosolic soil has developed, and along small cracks and fissures.
Photo: Orange "toes' of pahoehoe lava ooze past ranger (yellow shirt) and visitor where flows cross Chain of Craters Road
Emplacement and inflation of pahoehoe sheet flows: observations and measurements of active lava flows on Kilauea Volcano, Hawaii.