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 STA48 RD58
Device: dredge, rock
Latitude: -39.21383
Longitude: 77.88133
Water Depth(m): 1450 to 1290
Date: 19960321
PI: Kevin Johnson
Storage: room temperature, dry
Province: rise or ridge, aseismic ocean

Southeast Indian Ridge; Sampling locale: slope and top of small cone at southern end of ridge running south from St. Paul to end of segment J2.
1 :   
Weathering/Metamorphism: weathering - fresh
Comments: Sample Type: Pillow basalt. Mineralogy: Plagioclase. Weathering: Fresh. Glass condition: >50% fresh glass. 1 bucket. Glass taken for probe and subsampled by DG. Remaining glass to KJ. Several smaller pieces with little or no glass also included as unnumbered pieces, along with station glass from dredge bag.piece of pillow toe with ~1 cm thick fresh glassy rinds, with nearly aphyric interiors containing minor small phenocrysts of plagioclase; interior also shows distinct spherulitic texture (t.s. cut); Type 1 of 2 fromt this dredge
2 :   
Weathering/Metamorphism: weathering - fresh
Comments: Sample Type: Pillow basalt. Mineralogy: Olivine+plagioclase. Weathering: Fresh. Glass condition: >50% fresh glass. 1 bucket. Glass taken for probe and subsampled by DG. Remaining glass to KJ. KN subsampled 58-3. pieces of pillow toes and fragments with ~1 cm thick fresh glassy rinds, with nearly aphyric interiors containing minor small phenocrysts of olivine and plagioclase; Type 2 of 2. 58-3 shows concentration of olivine in pillow's interior.
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