pillow lava flow

pillow lava flow
   A lava flow or body displaying pillow structure and considered to have formed in a subaqueous environment (underwater); usually basaltic or andesitic in composition.
   Compare: aa lava flow, block lava flow, pahoehoe lava flow.
   SW & GS

Glossary of landform and geologic terms. 2013.

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  • block lava flow —    A lava flow dominated by block lava.    Compare: aa lava flow, pahoehoe lava flow, pillow lava flow.    SW …   Glossary of landform and geologic terms

  • pahoehoe lava flow —    A type of basaltic lava flow with a characteristically smooth, billowy or rope like surface.    Compare: aa lava flow, block lava flow, pillow lava flow.    GG & MA …   Glossary of landform and geologic terms

  • pillow lava — ALASKA VOLCANO OBSERVATORY GLOSSARY Interconnected, sack like bodies of lava formed underwater. GLOSSARY OF VOLCANIC TERMS A type of submarine lava flow consisting of interconnected, elongated lava tubes. Cross sections of individual lava tubes… …   Glossary of volcanic terms

  • pillow lava — noun The rock type typically formed when lava emerges from an underwater volcanic vent or a lava flow enters the ocean …   Wiktionary

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  • igneous rock — Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary …   Universalium

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