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Block lava flow
Глоссарий геологических терминов |
A lava flow dominated by block lava. compare -`a`a lava flow, pahoehoe lava flow, pillow lava flow. sw
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Block stream, английский
An accumulation of boulders or angular blocks, with no fine sizes in the upper part, overlying solid or weathered bedrock, colluvium, or alluvium, and lying below a cliff or ledge from which coarse fragments originate. block streams usually occur at the heads of ravines as narrow bodies that are more extensive downslope than along the slope. they may exist on any slope angle, but ordinarily not steeper than 90 percent slope (approx. 40 degrees). compare - block field. gg
Block lava, английский
Lava having a surface of angular blocks; it is similar to `a`a lava but the fragments are larger and more regular in shape, somewhat smoother, and less vesicular. compare - `a`a lava, pahoehoe lava, pillow lava. gg
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