Monday, July 28, 2014


George F Thomson

Shared publicly  -  12:49 PM
...Lava, : what comes out must go in or be compressed to never go in again !
A geologist dips a rock hammer into an active lava pool at the Hawaiian Volcano Observatory. After scooping out the lava it is placed in the water to quench it. HVO routinely collects lava samples for chemical analysis, which can give insight into changes in the magmatic system.

Photo from the U.S. Geologic Survey



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