GRD00ZFS0
110-C13
Pisolitic Limestone
Cenozoic › Paleogene › Eocene
33.9
-
55.8
1
Ritter 154 › Cabinet 18 › Drawer C
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Dark brown pisolites in tan limestone. Small sample. Original label: Flagstaff limestone (Basal Green River)
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Utah
Hobble Creek, Wasatch Mts.
Latitude: 40.2°
Longitude: -111.5°
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The edge of a large pisoid and the surrounding matrix.
2.5
plane
The edge of a large pisoid and the surrounding matrix.
2.5
crossed
-
scan
crossed
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scan
plane
GRD00ZFT0: Very large pisolites (50%) in fine-grained matrix of mud. One pisolite has grown over a calcite-filled shell (visible to the naked eye in thin section). Sparry calcite, small angular quartz grains, and occasional k-spar grains in matrix. Matrix is sparrite clusters, quartz silt-sand, and recrystallized skeletal material in a micritic groundmass. (C. Eichler)
N/A
N/A