World Data Service for Geophysics

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

doi:10.7289/V5H41PB8


Repository: SOEST [Contact the Curator]
Ship: Melville
Cruise: BMRG06MV
Sample: BMRG06MV STA61 RD64
Device: dredge, rock
Latitude: -37.98183
Longitude: 78.16333
Water Depth(m): 1860 to 1750
Date: 19960326
PI: Kevin Johnson
Storage: room temperature, dry
Province: rise or ridge, aseismic ocean

Southeast Indian Ridge; Sampling locale: base and slope of small volcanic cone in axial valley of segment I2.
1 :   
Weathering/Metamorphism: weathering - fresh
Comments: Sample Type: Pillow basalt_Aphyric basalt. Mineralogy: Plagioclase+olivine. Weathering: Fresh. Glass condition: >50% fresh glass. 3 sample bags; 7 buckets. Probe glass taken. Subsampled by DG. Remaining glass to KJ. Two buckets of unnumbered samples of this type, with glass still on samples, are also included. pillow basalt fragments with fresh glass rinds up to ~2 cm thick. minor plagioclase and olivine microphenocrysts in subequal proportions. Type 1 of this dredge.
2 :   
Weathering/Metamorphism: weathering - fresh
Comments: Sample Type: Sheet flow basalt_Aphyric basalt. Mineralogy: Plagioclase+olivine. Weathering: Fresh. Glass condition: >50% fresh glass. 3 sample bags; 7 buckets. Probe glass taken. Subsampled by DG. Remaining glass to KJ. Two buckets of unnumbered samples of this type, with glass still on samples, are also included. sheet flow blocks and pieces with fresh glass rinds up to ~1 cm thick. minor plagioclase and olivine microphenocrysts in subequal proportions. Type 2 of this dredge.
3 :   
Weathering/Metamorphism: weathering - fresh
Comments: Sample Type: Basalt. Mineralogy: Plagioclase+olivine. Weathering: Fresh. Glass condition: No glass. 3 sample bags; 7 buckets. No glass available. Subsampled by KN.Rounded piece of basalt with no glass. Interior shows clots of plagioclase and olivine. Type 3 of this dredge.
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