World Data Service for Geophysics

Index to Marine and Lacustrine Geological Samples (IMLGS)
an international partnership

doi:10.7289/V5H41PB8


Repository: URI [Contact the Curator]
Ship: Thomas G. Thompson
Cruise: TN273
Sample: TN273-42D
Device: dredge, rock
Latitude: 12.75017 to 12.75313
Longitude: 143.75056 to 143.75346
Water Depth(m): 2483 to 2233
Date: 20120118 to 20120118
PI: Katherine Kelly
IGSN: URI900341
Storage: room temperature, dry

<1kg of lava/sediment. Sediment and 1 rock in pipe dredge. Collected from a submarine arc, Mariana arc extension, steep cone between calderas 3 and 4.
1 :    IGSN URI900342  
Lithology/Mineralogy: igneous (extrusive/volcanic), basalt, pillow
Glass/remarks:some samples with fresh glass & Mn/Fe oxide coatings
Comments: Sample TN273-42D-01-01. Submarine arc. pillow basalt, porphyritic, vesicles 5% by volume 1-5mm in diameter, olivine <1% by volume 1-3mm in diameter, plagioclase <1% by volume 1-5mm in diameter, 1mm thick manganese crust, 4mm thick glassy rind, 13cm in size
2 :    IGSN URI900343  
Lithology/Mineralogy: igneous (extrusive/volcanic), basalt, pillow
Glass/remarks:some samples with fresh glass & Mn/Fe oxide coatings
Comments: Sample TN273-42D-01-02. Submarine arc. pillow basalt, porphyritic, vesicles 5% by volume 1-5mm in diameter, olivine <1% by volume 1-3mm in diameter, plagioclase <1% by volume 1-5mm in diameter, 1mm thick manganese crust, 4mm thick glassy rind, fragments
3 :    IGSN URI900344  
Lithology/Mineralogy: sedimentary (pyroclastic), tuff, vitric (glass clasts)
Comments: Sample TN273-42D-02-01. Sandy mud, 40% sand size (40% vesicular, fresh glass; 60% planktonic foraminifera), 60% silt + clay
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