Index to Marine and Lacustrine Geological Samples (IMLGS)
LDEO [Contact the Curator]
1240 to 1190
room temperature, dry
1) blocky silty calcareous rocks, light colored; 2) more indurated, platy arcuate, rocks, light and dark. 3) dark-colored irregular (sub-aerially weathered?) rocks, most jagged and pointy.
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