Deep Sea Symphony: Exploring the Musicians Seamounts

EX1708

NOAA expedition EX1708 sampled seamounts and seafloor features in the deep waters of the Musician Seamounts, using the submersible Deep Discoverer. OSU marine repository archives the rock samples collected during the expedition. Archived samples include basalts, fossil corals and ferromanganese crust. 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-EX1708-D1-1a23.31-158.361802.32Tropic of Cancer SeamountSedimentary2.4034.602.02
OSU-EX1708-D1-323.31-158.361779.58Tropic of Cancer SeamountBasalt2.3534.602.05
OSU-EX1708-D1-423.31-158.361773.49Tropic of Cancer SeamountBasalt2.3234.612.07
OSU-EX1708-D2-225.55-158.223207.03Beach RidgeBasalt1.5034.673.53
OSU-EX1708-D2-325.55-158.223176.30Beach RidgeBasalt1.4834.673.53
OSU-EX1708-D3-126.22-159.152531.11Beethoven RidgeBasalt1.6434.652.96
OSU-EX1708-D3-3a26.22-159.142393.93Beethoven RidgeBasalt1.6734.652.86
OSU-EX1708-D3-626.22-159.142303.83Beethoven RidgeBasalt1.6934.652.78
OSU-EX1708-D4-127.24-160.632624.05Sibelius SeamountBasalt1.6734.652.81
OSU-EX1708-D5-127.84-161.292931.41Gounod SeamountBasalt1.5634.672.90
OSU-EX1708-D5-327.84-161.292761.09Gounod SeamountBasalt1.6034.662.77
OSU-EX1708-D7-130.34-162.052050.76Debussy SeamountVolcanic Breccia2.0234.611.88
OSU-EX1708-D7-230.34-162.052023.89Debussy SeamountBasalt2.0534.611.86
OSU-EX1708-D8-131.85-162.902425.12Wagner SeamountHyaloclastite1.7034.652.36
OSU-EX1708-D8-2a31.85-162.902352.47Wagner SeamountBasalt1.7834.632.22
OSU-EX1708-D8-431.85-162.902230.49Wagner SeamountHyaloclastite1.7834.642.18
OSU-EX1708-D9-132.21-163.623016.78Verdi SeamountBasalt1.5434.672.75
OSU-EX1708-D9-232.21-163.623017.34Verdi SeamountBasalt1.5634.662.77
OSU-EX1708-D10-133.25-164.772806.24Shostakovich SeamountHyaloclastite1.5834.662.84
OSU-EX1708-D10-533.25-164.772701.51Shostakovich SeamountBasalt1.5934.662.77
OSU-EX1708-D12-130.44-164.012036.20Mussorgsky SeamountBasalt1.8834.632.69
OSU-EX1708-D12-230.44-164.011991.22Mussorgsky SeamountSedimentary1.8034.632.85
OSU-EX1708-D13-128.68-162.611812.73Paganini SeamountBasalt2.1834.602.46
OSU-EX1708-D13-428.68-162.611769.32Paganini SeamountBreccia2.1034.602.49
OSU-EX1708-D14-128.96-162.072478.63Liszt SeamountBasalt1.7834.643.13
OSU-EX1708-D14-428.96-162.072377.88Liszt SeamountBasalt1.7834.643.02
OSU-EX1708-D15-128.72-161.663794.14Mozart SeamountMudstone1.4734.684.32
OSU-EX1708-D15-2a28.69-161.673775.70Mozart SeamountMudstone1.4734.684.32
OSU-EX1708-D15-3a28.69-161.673691.84Mozart SeamountBasalt1.4634.684.22
OSU-EX1708-D15-628.69-161.673645.38Mozart SeamountBasalt1.4534.684.27
OSU-EX1708-D17-126.61-160.672029.82Rapano SeamountBasalt2.0334.622.74
OSU-EX1708-D17-426.60-160.671910.43Rapano SeamountBasalt1.9734.632.77
OSU-EX1708-D18-125.76-160.062242.56Schumann SeamountBasalt1.9034.632.98
OSU-EX1708-D18-525.76-160.062140.46Schumann SeamountBasalt1.9734.632.86
OSU-EX1708-D19-225.16-161.651713.24Mendelssohn SeamountBasalt2.3134.592.40
OSU-EX1708-D20-122.75-160.93447.68Middle BankBasalt8.7734.075.25
EX1708-D1 (Topic of Cancer Seamount)

 

Sample Location Rock Type Description Images
OSU-EX1708-D1-1a 23.31°N, 158.36°W Sedimentary A small piece of substrate with yellowish clasts… Image 4Image 5Image 4Image 4Image 4Image 4
OSU-EX1708-D1-3 23.31°N, 158.36°W Plagioclase Basalt A heavily altered plagioclase basalt… Image 2Image 3Image 4Image 5Image 4Image 4Image 4Image 4Image 4Image 4
OSU-EX1708-D1-4 23.31°N, 158.36°W Basalt An aphyric plagioclase rich basalt… Image 2Image 3Image 4Image 5Image 4Image 4Image 4Image 4Image 4
EX1708-D2 (Beach Ridge)
EX1708-D3 (Beethoven Ridge)
EX1708-D4 (Sibelius Seamount)

 

Sample Location Rock Type Description Images
OSU-EX1708-D4-1 27.24°N, 160.63°W Basalt A fine grained basalt with plagioclase and rare clinopyroxene microcrysts… Image 2Image 3Image 4Image 5Image 4Image 4
EX1708-D5 (Gounod Seamount)

 

Sample Location Rock Type Description Images
OSU-EX1708-D5-1 27.84°N, 161.29°W Plagioclase Basalt A plagioclase basalt with coarse plagioclase grains… Image 2Image 3Image 4Image 5Image 4Image 4Image 4Image 4
OSU-EX1708-D5-3 27.84°N, 161.29°W Plagioclase Basalt A highly phyric basalt with plagioclase phenocrysts… Image 2Image 3Image 4Image 5Image 4Image 4Image 4
EX1708-D7 (Debussy Seamount)
EX1708-D8 (Wagner Seamount)
EX1708-D9 (Verdi Seamount)
EX1708-D10 (Shostakovich Seamount)

 

Sample Location Rock Type Description Images
OSU-EX1708-D10-1 33.25°N, 164.77°W Hyaloclastite A heavily altered hyaloclastite… Image 2Image 3Image 4Image 5Image 4Image 4
OSU-EX1708-D10-5 33.25°N, 164.77°W Basalt An aphyric plagioclase rich basalt with zeolite rimmed vesicles… Image 2Image 3Image 4Image 5Image 4Image 4Image 4Image 4Image 4
EX1708-D12 (Mussorgsky Seamount)
EX1708-D13 (Paganini Seamount)

 

Sample Location Rock Type Description Images
OSU-EX1708-D13-1 28.68°N, 162.61°W Plagioclase-Clinopyroxene Basalt A plagioclase and clinopyroxene phyric basalt… Image 2Image 3Image 4Image 5Image 4Image 4Image 4Image 4
OSU-EX1708-D13-4 28.68°N, 162.61°W Breccia Thin section covers a mixture of FeMn oxides and phosphorite… Image 2Image 3Image 4Image 5Image 4Image 4Image 4Image 4
EX1708-D14 (Liszt Seamount)

 

Sample Location Rock Type Description Images
OSU-EX1708-D14-1 28.96°N, 162.07°W Plagioclase Basalt A plagioclase basalt with coarse plagioclase phenocrysts… Image 2Image 3Image 4Image 5Image 4Image 4Image 4Image 4Image 4
OSU-EX1708-D14-4 28.96°N, 162.07°W Plagioclase Basalt A heavily altered plagioclase basalt… Image 2Image 3Image 4Image 5Image 4Image 4Image 4Image 4
EX1708-D17 (Rapano Seamount)
EX1708-D18 (Schumann Seamount)

 

Sample Location Rock Type Description Images
OSU-EX1708-D18-1 25.76°N, 160.06°W Plagioclase-Clinopyroxene Basalt A plagioclase and clinopyroxene phyric basalt… Image 2Image 3Image 4Image 5Image 4Image 4Image 4Image 4Image 4Image 4Image 4
OSU-EX1708-D18-5 25.76°N, 160.06°W Plagioclase Basalt A plagioclase basalt (hyaloclastite) that contains a completely recrystallized glass matrix… Image 2Image 3Image 4Image 5Image 4Image 4Image 4
EX1708-D19 (Mendelssohn Seamount)

 

Sample Location Rock Type Description Images
OSU-EX1708-D19-2 25.16°N, 161.65°W Olivine-Plagioclase Basalt An olivine and plagioclase phyric basalt with a calcite and palagonite amygdules… Image 2Image 3Image 4Image 5Image 4Image 4Image 4Image 4Image 4
EX1708-D20 (Middle Bank)