GRD023MS0
RAMA7-Dr19-11
Mudstone
Mesozoic › Jurassic › Late Jurassic
145.5
-
161.0
1
Ritter 154 › Cabinet 37 › Drawer C
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One small (~4x3x3 cm), cut subrounded pebble of fine-grained mudstone. Quartz grains in greenish silicic matrix. Patchy Fe-Mn crust on sample. Original label: 25 November, 1980.
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RAMA 7 Dredge 19
Pacific Ocean
Mariana Trench. Original: 11 48.3N, 142 11.9E to 11 49.0N, 142 11.3E. Depth: -4440 to -4200.
Latitude: 11.805°
Longitude: 142.19833°
-4320.0 m a.s.l.
N/A
General texture of sample: opaques, amphibole, biotite
5.0
plane
-
5.0
crossed
-
scan
crossed
GRD023MT0: 15% opaques; 10% amphibole; trace biotite; 50% green silicic groundmass; porous (25%) (C. Eichler)
N/A
N/A