World Data Service for Geophysics

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


Repository: SOEST [Contact the Curator]
Ship: Melville
Cruise: BMRG06MV
Sample: BMRG06MV STA69 RD68
Device: dredge, rock
Latitude: -37.42633
Longitude: 77.87067
Water Depth(m): 1830 to 1700
Date: 19960328
PI: Kevin Johnson
Storage: room temperature, dry
Province: rise or ridge, aseismic ocean

Southeast Indian Ridge; Sampling locale: small scarp along extension of segment I2.
1 :   
Weathering/Metamorphism: weathering - moderate
Comments: Sample Type: Sheet flow basalt. Mineralogy: Plagioclase and olivine. Weathering: Moderate. Glass condition: Some fresh glass and Mn/Fe oxide coatings. 1 bucket. Glass taken for probe. Subsampled by DG. Remaining glass to KJ.Olivine/plagioclase-phyric sheet flow fragments with glassy rinds up to ~0.5 cm thick coated with Fe/Mn oxides. Type 1 of this dredge. one unnumbered piece of this type also included.
2 :   
Weathering/Metamorphism: weathering - heavy
Comments: Sample Type: Pillow basalt. Mineralogy: Plagioclase + olivine. Weathering: Heavy. Glass condition: Notable Mn/Fe oxide coatings. 1 bucket. No glass available. whole rocks subsampled by KN. one unnumbered piece of this type also included.Weathered plagioclase/olivine-phyric pillow basalt fragments with Fe/Mn oxide coatings. Type 2 of this dredge.