English to Polish Science Geology

Wyrażenie pochodzi z wykładu "Penelope Boston says there might be life on Mars", który można obejrzeć (i przeczytać) pod adresem http://www.ted.com/talks/penelope_boston.html

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In this cave, great areas are covered by this reddish material that you see here, and also these enormous crystals of celenite that you can see dangling down. This stuff is produced biologically. This is the breakdown product of the bedrock, that organisms are busy munching their way through. They take iron and manganese minerals within the bedrock and they oxidise them. (...) So, these are signals that they leave in the ROCK RECORD.