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 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.… … 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
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
cave — cavelike, adj. /kayv/, n., v., caved, caving. n. 1. a hollow in the earth, esp. one opening more or less horizontally into a hill, mountain, etc. 2. a storage cellar, esp. for wine. 3. Eng. Hist. a secession, or a group of seceders, from a… … Universalium
Photograph by J.D. Griggs on 21 August 1990Blister on the surface of a pahoehoe flow, Kilauea Volcano, Hawai`i. Note U.S. quarter for scale.\Other pahoehoe textures