GRD01B4S0
W79-127
Chert
Mesozoic › Jurassic
145.5
-
201.6
1
Ritter 154 › Cabinet 18 › Drawer N
radiolarians,silicified
Bedded silicic shales. Radiolarians become more abundant down section. More coarse-grained chert and siliceous shale (fine-grained chert). Fe-oxides along vertical fractures.
Samples W79-116 through W79-131 see Winterer 1979 notebook, pages 62 through 67
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Italy
On the road between Sasseta and Monterotondo
Latitude: 43.13°
Longitude: 10.64°
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Texture of the cloudy bed
2.5
plane
Texture of the cloudy bed
2.5
crossed
Texture of the clear bed
2.5
plane
Texture of the clear bed
2.5
crossed
-
scan
crossed
-
scan
plane
GRD01B4T0: Two chert beds: One bed has high porosity. Formerly radiolarians? The other bed is more cloudy and contains oblong radiolarians (compacted?). Both beds contain small opaque crystals; a few medium-sized opaques. Fe-oxides along vertical fractures. in both beds. (C. Eichler)
N/A
N/A