World Data Service for Geophysics

Index to Marine and Lacustrine Geological Samples (IMLGS)
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Repository: URI [Contact the Curator]
Ship: Nautilus
Cruise: NA007
Sample: 025-ROVG
Device: grab, ROV
Latitude: 36.6076
Longitude: 25.5419
Water Depth(m): 343
Date: 20100802
PI: Croff Bell, Katy
Storage: room temperature, dry
Province: trench, continental margin
1 :   
Lithology/Mineralogy: igneous (extrusive/volcanic), pumice/scoria
Weathering/Metamorphism: weathering - fresh
Glass/remarks:>50% samples exhibit fresh glass
Comments: Fresh looking outcrop; white/light grey rhyolite/dactite pumice, highly vesicular, biotite bearing. Vesicles are elongated in a single orientation some sections have large coalesced vesicles with fibrous bubble wall remnants