. The Astrobiology Web: Your Online Guide to the Living Universe TM
An Antarctic Photo Album, Volume 3
by Dale Andersen

Text and Photographs ©copyright 1996 Dale T. Andersen. All Rights Reserved. Reproduced with permission.

[264, 34k jpeg] Biogenous Weathering

Biogenous weathering is visible on the surface of the sandstone. The lichen-dominated cryptoendolithic community contributes significantly to the weathering of the sandstone formations. Microbial activity increases the exfoliation of material from the surface of the rocks leading to the mosaic like pattern seen in this photo. A scale bar (each square is equal to 1cm) has been placed next to a section of rock that has been broken with a rock hammer, revealing the life which has colonized the interior of the rock.

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