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: TN273-40D
Device: dredge, rock
Latitude: 12.61262 to 12.61772
Longitude: 143.84247 to 143.84682
Water Depth(m): 3983 to 3735
Date: 20120117 to 20120117
PI: Katherine Kelly
IGSN: URI900320
Storage: room temperature, dry

1kg of lava. 1 rock in net and small clast in pipe dredge. Collected from a forearc rift, SE Mariana forearc rift, east wall of isolated basin.
1 :    IGSN URI900321  
Lithology/Mineralogy: igneous (extrusive/volcanic), basalt
Weathering/Metamorphism: weathering - moderate
Glass/remarks:some samples with fresh glass & Mn/Fe oxide coatings
Comments: Sample TN273-40D-01-01. Rift bottom. aphyric, altered basalt, 1mm thick manganese crust, 2cm alteration rim, 5mm glassy rind, 14cm in size
2 :    IGSN URI900322  
Lithology/Mineralogy: igneous (extrusive/volcanic), basalt
Weathering/Metamorphism: weathering - light
Glass/remarks:some samples with fresh glass & Mn/Fe oxide coatings
Comments: Sample TN273-40D-01-02. Rift bottom. aphyric, altered basalt, 1mm thick manganese crust, 2cm alteration rim, 5mm glassy rind, 6cm in size
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