World Data Service for Geophysics

Index to Marine and Lacustrine Geological Samples (IMLGS)
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Repository: SOEST [Contact the Curator]
Ship: Kana Keoki
Cruise: KK840824-02
Sample: KK840824 STA90 RD66
Device: dredge, rock
Latitude: 25.98
Longitude: -164.37917
Water Depth(m): 1225 to 1325
Date: 19840906
Storage: room temperature, dry

Necker Is., N Flank
1 :   
Comments: ~ 450 lbs., 9 cloth bags. ~ 70 samples, all with some Fe-Mn coating. Ave. Fe-Mn crust thickness of 1-3 cm. Variety of substrate, but mostly mudstone or indurated calcareous brown clay. Substrate ranges from altered basalt breccia with Fe-oxide staining to volcanoclastic breccia with clasts of vescular basalt and matrix of Fe-Mn (?) to brown indurated, calcareous clay with open Mn-lined burrows (clam bioturbation?). Crust thickness ranges from 33 to 1 mm. depth range: 1225 - 1325.