EX1606 (Deepwater Wonders of Wake)

EX1606 cruise of the Okeanos Explorer – Deepwater Wonders of Wake: Exploring the Pacific Remote Islands Marine National Monument

NOAA expedition EX1606 sampled seamounts and seafloor features in the deep waters of the Wake Atoll Unit 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, fossil corals, and more. Below are the samples recovered from each dive.  For more information please visit the dedicated NOAA Page and Background Information

View and download data by expanding each of the dive sites below

Go back to the EX1606 map or the NOAA collections page

 

EX1606-D1 (Alba)

 

Sample Location Rock Type Description Whole Rock Image TS Image TSX Image
OSU-EX1606-D1-1 16.852°N, 154.063°E Basalt A heavily altered basalt with large rounded vesicles…
OSU-EX1606-D1-4 16.858°N, 154.061°E Seafloor Debris A heavily altered rock, potentially a basalt at one point… No thin section No thin section

 

EX1606-D2 (Beatty)

 

Sample Location Rock Type Description Whole Rock Image TS Image TSX Image
OSU-EX1606-D2-1 20.075°N, 163.210°E Hyaloclastite A highly vesicular and altered hyaloclastite that contains carbonate infill in most fractures/voids…

 

EX1606-D3 (Delilah)
 

Sample Location Rock Type Description Whole Rock Image TS Image TSX Image
OSU-EX1606-D3-1 20.440°N, 163.710°E Breccia A heavily altered breccia or hyaloclastite with zones of phosphorite and igneous clasts…
OSU-EX1606-D3-3 20.450°N, 163.720°E Basalt A olivine-clinopyroxene-plagioclase basalt with large vesicles that are infilled completely with calcite…

 

EX1606-D5 (McDonnell Guyot)

 

Sample Location Rock Type Description Whole Rock Image TS Image TSX Image
OSU-EX1606-D5-1 19.151°N, 164.558°E Phosphorite A big chunk of phosphorite with a Mn-crust…
OSU-EX1606-D5-3 19.148°N, 164.561°E Basalt A highly altered aphyric basalt with large calcite filled vesicles…

 

EX1606-D6 (Unnamed Seamount West of Wake Island)

 

Sample Location Rock Type Description Whole Rock Image TS Image TSX Image
OSU-EX1606-D6-1 19.446°N, 165.797°E Basalt A completely recrystallized olivine-basalt…
OSU-EX1606-D6-4 19.444°N, 165.799°E Basalt A completely recrystallized olivine-basalt…

 

EX1606-D7 (Lafayette Seamount)
 

Sample Location Rock Type Description Whole Rock Image TS Image TSX Image
OSU-EX1606-D7-1 17.310°N, 165.960°E Basalt A highly altered olivine-basalt clast with almost all primary minerals recrystallized…
OSU-EX1606-D7-3 17.308°N, 165.962°E Breccia A breccia with altered basaltic clasts intermixed with layers of phosphorite and Fe-Mn…

 

EX1606-D10 (Guyot south of Wake)
 

Sample Location Rock Type Description Whole Rock Image TS Image TSX Image
OSU-EX1606-D10-1 18.467°N, 166.679°E Basalt A aphyric basalt with a groundmass consisting of fine plagioclase and oxide grains in a heavily altered matrix…
OSU-EX1606-D10-4 18.471°N, 166.682°E Basalt A highly altered vesicular basalt that contains a few skeletal plagioclase grains…
OSU-EX1606-D10-5 18.471°N, 166.682°E Basalt A highly altered basalt that contains a few shards of clinopyroxene in an other completely recrystallized matrix…

 

EX1606-D11 (East of Wake Island)

 

Sample Location Rock Type Description Whole Rock Image TS Image TSX Image
OSU-EX1606-D11-3 19.289°N, 166.665°E Fossil Coral A large fossil coral with bacterial mats and colonies growing on it… No thin section No thin section

 

EX1606-D12 (Seamount SW of Wake Island)

 

Sample Location Rock Type Description Whole Rock Image TS Image TSX Image
OSU-EX1606-D12-1 18.320°N, 165.979°E Basalt A altered ankaramite with completely recrystallized olivine (iddingsite) and relatively well preserved clinopyroxene grains…
OSU-EX1606-D12-3 18.327°N, 165.981°E Hyaloclastite highly altered hyaloclastite with pervasive phosphorite infilling along fractures…

 

EX1606-D13 (Batfish Seamount)

 

Sample Location Rock Type Description Whole Rock Image TS Image TSX Image
OSU-EX1606-D13-1 16.581°N, 166.472°E Basalt A altered traychitic basalt with large unfilled vesicles and a few plagioclase microcrysts…
OSU-EX1606-D13-4 16.582°N, 166.472°E Basalt A tracychitic basalt with a few plagioclase microcryts….

 

EX1606-D14 (Southwestern most seamount from Wake)

 

Sample Location Rock Type Description Whole Rock Image TS Image TSX Image
OSU-EX1606-D14-1 16.560°N, 165.345°E Breccia Just a hodgepodge of secondary mineral phases…