![]() Light wind streaks downwind (eastward) from the lakes show that salt crystals blow off the lake beds during dry times. Many of the depressions have salty lakes. Alternatively, voids might result when ground water dissolves carbonate (limestone) or evaporite (salt) deposits that the lava may be covering. These voids might have been caused by lava tubes carrying away molten lava from under the cooled and solidified surface of a lava flow. Collapse occurs above voids in the underlying rock. This view of the northwestern part of the plateau, near Los Menucos, Argentina, shows numerous depressions where the upper basalt layers are missing or collapsed. ![]() The Meseta de Somuncura is a semi-arid basalt plateau in northern Patagonia. ![]() SRTM Stereo Pair: Meseta de Somuncura, Patagonia, Argentina
0 Comments
Leave a Reply. |