GRD0109S0
110-C172
Graded Beds
Paleozoic › Carboniferous › Pennsylvanian
299.0
-
318.0
3
Ritter 154 › Cabinet 18 › Drawer R
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Bouma Sequence. Original label: Clastic limestone, Middle Magdalena, Coll. No. 101c, February 1951.
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New Mexico
Cloudcroft Road, Stop 1, GSA tour. 3.8 miles from Highway U.S. 54
Latitude: 33.72°
Longitude: -104.27°
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Slide C: Echinoderm stem fragment in pelletal limestone
2.5
plane
Slide C: Echinoderm stem fragment in pelletal limestone
2.5
crossed
Slide B: Rounded skeletal fragments in a single layer between two pelletal layers
2.5
plane
Slide B: Rounded skeletal fragments in a single layer between two pelletal layers
2.5
crossed
Slide A: Pellets becoming slightly more fine-grained in a bed. Calcite vein cross-cutting the bed.
2.5
plane
Slide A: Pellets becoming slightly more fine-grained in a bed. Calcite vein cross-cutting the bed.
2.5
crossed
Slide C
scan
crossed
Slide C
scan
plane
Slide B
scan
crossed
Slide B
scan
plane
Slide A
scan
crossed
Slide A
scan
plane
GRD0109T0: Thin section a: fine-grained with layer of pellets and shell fragments with interstitial sparry calcite. (C. Eichler)
GRD0109T1: Thin section b: Abundant shell fragments. Fine-grained pellets becoming more coarsely-grained upsection. Bryozoans and bivalve fragments (C. Eichler)
GRD0109T2: Thin section c: Occasional poorly preserved bivalve fragments, echinoderm fragments, and ostracod shells in pelletal limestone. Pellets are poorly preserved. (C. Eichler)
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