aa lava

aa lava

[ä′ä ′lä·və]
(geology)
References in periodicals archive ?
Those collectors all described the birds as feeding on the naio growing on "clinker" flows, by which it became obvious that they meant large, rugged masses of bouldery aa lava (Fig.
Specific topics include strike-slip fault, terminal moraine, tsunami, weathering, Yellowstone National Park, mass wasting, Kaapvaal craton, ichnofossils, greenstone belts, geodesy, El Nino, desalination, carbon cycle, and aa lava.
According to Cathey Tarleton, the Mauna Kea's de facto historian, Jones crushed some of the porous aa lava (meaning rough lava in Hawaiian) with a hammer and determined that it would make a rich soil base.