PAHOEHOE New Mexico McCarty Ropy Lava

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PAHOEHOE New Mexico McCarty Ropy Lava :
$19.99

This is a section of PAHOEHOE18\" X 18\" X 3\" thickThis is ropy lava that came from the McCarty lava bedsWeighs 35 poundswill ship least expensive wayPahoehoe features of the McCartys Flow

Pahoehoe lava flows form from very fluid basaltic lava, and have characteristic smooth, billowing, or ropey crusts of quenched glass over more crystalline flow interiors (Williams and McBirney, 1979). Many of the features observed in pahoehoe lava flows are related a process whereby hot, fluid lava flows under and drags, or inflates and splits, the partially cooled crust. Ropes are formed by the cooled surface being dragged, and deformed by hotter, flowing lava. Fissures and tumescences can be formed by hot lava flowing under, inflating and cracking a cool, brittle crust. Squeeze-ups can be formed when hot lava is squeezed up through a small fissure, or hole in the cool crust. The following photos illustrate a number of features that can be observed on theMcCartyslava flow near Grants, NM