pahoehoe lava coil

USGS PHOTO GLOSSARY OF VOLCANIC TERMS
Lava coils are spiral or scroll-shaped features that form along slow-moving shear zones in a flow; for example, along the margins of a small channel. The direction of flow can be determined from a lava coil. Lava on the right side of the photo was moving toward the top of the view relative to lava on the left side.
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Photograph by W.W. Chadwick in January 1983.
Lava coil on pahoehoe flow, Kilauea Volcano, Hawai`i.
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Other pahoehoe textures

Glossary of volcanic terms. - University of Wisconsin Oshkosh. . 2001.

Look at other dictionaries:

  • pahoehoe — USGS PHOTO GLOSSARY OF VOLCANIC TERMS Pahoehoe is a Hawaiian term for basaltic lava that has a smooth, hummocky, or ropy surface. A pahoehoe flow typically advances as a series of small lobes and toes that continually break out from a cooled… …   Glossary of volcanic terms

  • pahoehoe toe — USGS PHOTO GLOSSARY OF VOLCANIC TERMS Small protuberances called toes are common along the edges and flow front of an active pahoehoe flow moving across flat or gentle slopes. The flow spreads as the small toes grow in size and merge together to… …   Glossary of volcanic terms

  • pahoehoe blister — USGS PHOTO GLOSSARY OF VOLCANIC TERMS Blisters are thin walled basaltic glass bubbles formed by the release of volcanic gas from the surface of a pahoehoe flow. Like a glass blower that blows air into molten glass to create a goblet or vase, gas… …   Glossary of volcanic terms

  • Lava lamp — An original Mathmos Astro lava lamp. For other uses, see Lava (disambiguation). A lava lamp (or Astro lamp) is a decorative novelty item that contains blobs of colored wax inside a glass vessel filled with clear liquid; the wax rises and falls as …   Wikipedia

  • ropy pahoehoe — USGS PHOTO GLOSSARY OF VOLCANIC TERMS Ropy pahoehoe is the most common surface texture of pahoehoe flows. The numerous folds and wrinkles ( ropes ) that are characteristic of ropy pahoehoe form when the thin, partially solidified crust of a flow… …   Glossary of volcanic terms

  • entrail pahoehoe — USGS PHOTO GLOSSARY OF VOLCANIC TERMS Named after the texture of an animal s intestines entrail pahoehoe best forms when pahoehoe flows down a steep slope. It is usually found on the sides of rootless vents, such as hornitos and ruptured tumuli… …   Glossary of volcanic terms

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