Mountains in the Deep: Exploring the Central Pacific Basin

EX1705

NOAA expedition EX1705 sampled seamounts and seafloor features in the deep waters of American Samoa; the high seas; and the Jarvis Island, Kingman Reef, and Palmyra Atoll Units of the Pacific Remote Islands Marine National Monument (PRIMNM) using the submersible Deep Discoverer. OSU marine repository archives the rock samples collected during the expedition. Archived samples include basalts, biogenic sediments and volcanic breccias. Below are the samples recovered from each dive.

For more information please visit the dedicated NOAA Page and Background Information

Go back to the NOAA collections page.




Dive sample tables: click to expand

Collection Metadata
IGSNLatitudeLongitudeDepth (m)Feature NamePrincipal Rock TypeTemp (C)Salinity (PSU)Oxygen (mg/l)
OSU-EX1705-D2-1-5.86-164.702483.61Te Tukunga o FakahotuBasalt1.8034.674.16
OSU-EX1705-D2-2-5.86-164.702446.25Te Tukunga o FakahotuBasalt1.7934.674.13
OSU-EX1705-D3-1-4.58-162.402216.28Te Kawhiti a Maui PotikiBasalt2.0734.653.75
OSU-EX1705-D3-4-4.58-162.402167.61Te Kawhiti a Maui PotikiBasalt2.1034.633.71
OSU-EX1705-D4-2-1.51-159.461684.15KahalewaiSedimentary2.6934.623.18
OSU-EX1705-D4-3-1.51-159.461669.91KahalewaiBreccia2.7134.613.14
OSU-EX1705-D4-5-1.51-159.451606.94KahalewaiBreccia2.7034.623.23
OSU-EX1705-D6-21.32-159.931833.81Keli?ihananuiBasalt2.3834.633.23
OSU-EX1705-D7-21.08-161.29919.32Whaley SeamountSedimentary5.1834.552.56
OSU-EX1705-D8-10.98-162.384572.08Fracture ZoneSedimentary1.3134.705.34
OSU-EX1705-D8-40.98-162.384420.35Fracture ZoneBasalt1.3334.705.20
OSU-EX1705-D11-16.37-162.311023.12Kingman ConeBreccia4.5034.561.67
OSU-EX1705-D12-36.42-162.222237.78Kingman DeepBreccia2.0134.653.37
EX1705-D2 (Te Tukunga O)
EX1705-D4 (Kahelewai)
EX1705-D6 (Keli'ihananui)
Sample Location Rock Type Description Images
OSU-EX1705-D6-2 1.32°N, 159.93°W Basalt A feldspar dense trachytic basalt … Image 2Image 3Image 3Image 3Image 3Image 3Image 3Image 3Image 3
EX1705-D7 (Whaley Seamount)
Sample Location Rock Type Description Images
OSU-EX1705-D7-2 1.08°N, 161.29°W Sedimentary Rock A phosphorite with some preserved zones of fine grained calcite… Image 2 Image 3Image 3Image 3Image 3Image 3Image 3Image 3
EX1705-D8 (Fracture Zone)
Sample Location Rock Type Description Images
OSU-EX1705-D8-1 0.98°N, 162.38°W Biogenic Sediments A dark colored sand-sized sediment… Image 2 Image 2 Image 2 Image 2 Image 2 Image 2
OSU-EX1705-D8-4 0.98°N, 162.38°W Basalt A variably altered plagioclase phyric basalt… Image 2Image 3Image 3Image 3Image 3Image 3Image 3
EX1705-D11 (Kingman Cone)
EX1705-D12 (Kingman Deep)
Sample Location Rock Type Description Images
OSU-EX1705-D12-3 6.42°N, 162.22°W Volcanic Breccia A volcanic breccia or hyaloclastite with a phosphorite cement… Image 3Image 3Image 3Image 3Image 3Image 3Image 3Image 3Image 3