GRD01DCS0
W79-209
Replacement Features
Mesozoic › Jurassic › Late Jurassic
145.5
-
161.0
1
Ritter 154 › Cabinet 18 › Drawer O
radiolarians,laminations
Very cherty limestone and thin red mudstone/marlstone. Chertification. Wavy laminations.
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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Radiolarians in laminated muddy bed (bottom) and silicic bed (top)
2.5
plane
Radiolarians in laminated muddy bed (bottom) and silicic bed (top)
2.5
crossed
-
scan
crossed
-
scan
plane
GRD01DCT0: Light layers are more silica-rich. Dark layers are muddy and laminated. Radiolarians throughout the sample and are well-preserved. Radiolarians are bedded in the dark layers. Carbonate veins with siliceous walls. Reddish wisps in the dark layer. Fe-oxide stains? (C. Eichler)
N/A
N/A