GRD01DKS0
W79-217
Replacement Features
Mesozoic › Jurassic › Late Jurassic
145.5
-
161.0
1
Ritter 154 › Cabinet 18 › Drawer O
radiolarians,lumachella,chertification
A. Lumachella limestone with red chert nodules.
Sample W79-204 through W79-219 see Winterer 1979 notebook, pages 95 through 97.
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Italy
At 5 km post on road from Acquasparta to Spoleto
Latitude: 42.7°
Longitude: 12.54°
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Slide A: Radiolarians and shell fragments in micrite. Note the silicification of the micrite near the top of the photomicrograph
2.5
plane
Slide A: Radiolarians and shell fragments in micrite. Note the silicification of the micrite near the top of the photomicrograph.
2.5
crossed
Slide A: Radiolarians and shell fragments in chert.
2.5
plane
Slide A: Radiolarians and shell fragments in chert.
2.5
crossed
Slide A
scan
crossed
Slide A
scan
plane
GRD01DKT0: Slide A. S0. Shelly. Recrystallized shells. Pink micritic limestone with red chert nodule. Thin ostracod shells and recrystallized radiolarians in micrite. Radiolarians are more abundant close to the chert nodule. The chert nodule contains recrystallized radiolarians and calcite ostracod shells. Calcite veins cross-cut the chert. (C. Eichler)
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