NOAA logo, National Centers for Environmental Information, National Oceanic and Atmospheric Administration
US National Science Foundation Division of Ocean Sciences
Index to Marine and Lacustrine Geological Samples (IMLGS)

Repository: University of Hawaii at Manoa
Contact the Curator
Ship: Moana Wave
Cruise: MW8518
Sample: MW8518 STA61 RD24
Device: dredge, rock
Latitude: -3.555
Longitude: 149.84233
Water Depth(m): 2185 to 2155
Date: 19851229
Storage: room temperature, dry
Province: basin, small ocean

W Pacific Ocean, Manus Basin. Chain bag dredge. Field description: basalt
1 :   
Lithology/Mineralogy: igneous (extrusive/volcanic), basalt
Comments: ~50 kg of glassy lavas; sparsely porphyritic (microphenocrysts!); 3 basic lava types. Not very much mud: small amounts of brown and army green types. Group 1: fine-grained, (sparsely) porphyritic pillow lavas (nice bulbous textures) - olivine, plagioclase phyric; few zones of vesicles <0.05 cm diameter. Group 2: vesicular, glassy lavas - no apparent phenocrysts but maybe plagioclase; vesicles ~0.2 cm average diameter; nice shiny, black glass. Group 3: Sheet flow lavas - intermediate vesicularity between groups 1 and 2; tend to be more elongate than group 2 and more variable sizes; glassy, striated surfaces; flow structures. 4 pails.

When you refer to individual samples/data in the IMLGS, please cite each source repository whose data you use.

More Information and how to cite the IMLGS: doi:10.7289/V5H41PB8.

ESRI iconUse the Interactive Map Interface