Papahānaumokuākea Marine National Monument 

EX1504L2

NOAA expedition EX1504 Leg 2 sampled seamounts in the deep waters of the Papahānaumokuākea Marine National Monument of the Pacific using the submersible Deep Discoverer. OSU marine repository archives the rock samples collected during the expedition. Archived samples include basalts, fossil corals, phosphorites and more. Below are the samples recovered from each dive.

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

For additional samples from this region see NOAA collection EX1603 page.

Go back to the NOAA collections page.



Dive sample tables: click to expand

EX1504L2-D1 (East Necker Seamount)
EX1504L2-D3 (St. Rogatien Rift Zone Ridge)
EX1504L2-D10 (Salmon Bank Ridge)

Sample Location Rock Type Description Images
OSU-EX1504L2-D10-1 26.82°N, 176.31°W Basalt A aphanitic basalt with ~0.5mm vesicles… Image 2Image 3Image 4Image 4Image 4Image 4Image 4Image 4Image 4
EX1504L2-D18 (West Nihoa)

Sample Location Rock Type Description Images
OSU-EX1504L2-D18-1 23.18°N, 162.46°W Basalt A olivine and plagioclase phyric basalt… Image 2Image 3Image 4Image 4Image 4Image 4Image 4Image 4Image 4Image 4Image 4