Site U1358 core descriptions Visual core descriptions U1358A-1R Core Photo message openfile IMAGES/1358A1.PDF Hole 318-U1358A Core 1R, Interval 0.0-1.1m (CSF-A) 0 2.20 1.70 1.20 0.70 GRA 1.00 -4.00 -9.00 b* -14.00 Sedimentary structures 1000.00 8 10 500.00 5 Magnetic susceptibility (Instrument units) 0.00 3 Shipboard sample 0 Bioturbation Graphic lithology Diagenesis Clast abundance Macrofossils Core image Coring disturbance Core length (cm) Section Depth CSF-A (m) CLAST-RICH SANDY DIAMICT. Extremely disturbed by drilling and most intervals are washed, except between 1-24cm (S1) and the core catcher, where sediment is firm. Clast lithologies are diverse with metasediments, diorite, and quartzite. STRATIGRAPHIC INTEGRITY IS HIGHLY SUSPECT. 0 1 1 100 CC Proc. IODP | Volume 318 1 Site U1358 core descriptions Visual core descriptions U1358B-1R Core Photo message openfile IMAGES/1358B1.PDF Hole 318-U1358B Core 1R, Interval 0.0-0.42m (CSF-A) 0 2.00 1.00 0.00 GRA -1.00 -3.50 -6.00 b* -8.50 1000.00 750.00 Sedimentary structures 500.00 8 10 250.00 5 Magnetic susceptibility (Instrument units) 0.00 3 Shipboard sample 0 Bioturbation Graphic lithology Diagenesis Clast abundance Macrofossils Core image Coring disturbance Core length (cm) 0 Section Depth CSF-A (m) CLAST-RICH MUDDY DIAMICTON. Unconsolidated, light brownish grey, massive, clast-rich muddy diamicton. Clast abundance is ~7.5%, polymict in composition o with clast sizes up to 11cm. Clast lithologies are basalt and granite gneiss, subangular to subrounded in shape. 1 CC Proc. IODP | Volume 318 2 Site U1358 core descriptions Visual core descriptions U1358B-2R Core Photo message openfile IMAGES/1358B2.PDF Hole 318-U1358B Core 2R, Interval 8.2-9.32m (CSF-A) 2.20 1.20 0.20 1.50 GRA -1.00 -3.50 -6.00 b* -8.50 Sedimentary structures 180.00 8 10 80.00 5 Magnetic susceptibility (Instrument units) -20.00 3 Shipboard sample 0 Bioturbation Graphic lithology Diagenesis Clast abundance Macrofossils Core image Coring disturbance Section Core length (cm) Depth CSF-A (m) CLAST-RICH SANDY DIAMICTITE. Consolidated, greenish grey, massive, clast-rich, sandy diamictite. Clast abundance is ~7.5% and polymict in composition with clast size up to 23cm. Clast lithologies are basalt, granite, and minor metasedimentary clasts. Clasts are subangular to subrounded in shape and basalt clasts are often facetted. 0 1 9 100 CC Proc. IODP | Volume 318 3 Site U1358 core descriptions Visual core descriptions U1358B-3R Core Photo message openfile IMAGES/1358B3.PDF Hole 318-U1358B Core 3R, Interval 17.3-21.54m (CSF-A) 2.40 1.90 2.50 GRA 0.00 -2.50 -5.00 b* -7.50 Sedimentary structures 400.00 8 10 -600.00 5 Magnetic susceptibility (Instrument units) -1600.00 3 Shipboard sample 0 Bioturbation Graphic lithology Diagenesis Clast abundance Macrofossils Core image Coring disturbance Section Core length (cm) Depth CSF-A (m) CLAST-RICH SANDY DIAMICTITE. Consolidated, grey, massive to weakly stratified, clast-rich diamictite. Clast abundance is ~ 5% and polymict is composition, with clast sizes up to 5.5 cm. Clast lithologies are quartzite, dark metasediment and basalt. Clasts are subangular in shape and often facetted. 0 18 1 100 19 200 2 20 300 3 21 400 CC Proc. IODP | Volume 318 4 Site U1358 core descriptions Visual core descriptions U1358B-4R Core Photo message openfile IMAGES/1358B4.PDF Hole 318-U1358B Core 4R, Interval 26.4-28.625m (CSF-A) 2.60 1.60 0.60 -0.40 GRA 4.00 -1.00 -6.00 b* -11.00 4500.00 2000.00 Sedimentary structures -500.00 8 10 -3000.00 5 Magnetic susceptibility (Instrument units) -5500.00 3 Shipboard sample 0 Bioturbation Graphic lithology Diagenesis Clast abundance Macrofossils Core image Coring disturbance Section Core length (cm) Depth CSF-A (m) CLAST-RICH SANDY DIAMICTITE. Consolidated, grey, massive, clast-rich sandy diamictite. Clast abundance is ~ 7.5% and clasts are polymict in composition, with sizes up to 24cm. Clast lithologies are basalt, gabbro, granite(gneiss), quartzite. Clasta are subangular to subrounded in shape and some are facetted. 0 1 27 100 2 28 200 CC Proc. IODP | Volume 318 5 U1358B-1R-1 through U1358B-4R-2 1 22 0.22 3 U1358A 1 96 U1358B 1 1 15 0.15 1 97 U1358B 2 CC 10 9.23 0 100 U1358B 3 1 100 18.3 U1358B 3 3 U1358B 4 U1358B 4 U1358B 4 1 30 5 50 2 40 15 2 39 0 45 3 1 48 7 3 1 1 2 1 Lithology abundance Volcanic glass Rock fragments Fish remains Rock Dinoflagellates Silicoflagellates Diatoms Radiolarians Calcareous sponge spicules Nannofossils Foraminifers Micrite Carbonate Opaque minerals Pyrite Biogenic Dense minerals Ferromagnesian minerals Glauconite Clay Micas Feldspar Quartz Mineral % Biogenic sediments % Terrigenous sediments % Volcanic sediments Depth (m) Depth in section (cm) Section Core Site Texture Lithology name 1 3 Ma 2 1 D Diamictite clasts mixing andy mud D Diamictite clasts mixing andy mud 0 100 0 25 3 5 65 21 1 99 0 30 5 3 50 3 3 1 90 27.3 0 100 0 30 3 3 68 2 4 Mi Diamictite clasts mixed sandy mud 1 100 27.4 0 100 0 7 2 4 76 7 2 3 Ma Diamictite clasts mixed sandy mud 2 65 28.3 0 100 0 15 10 7 54 7 2 5 D Diamictite clasts mixed sandy mud 68 2 D clast-rich sandy diamict 5 1 Mi Site U1358 core descriptions Proc. IODP | Volume 318 Samples Diamictite clasts mixing silty clay Diamictite clasts mixing silty clay Smear slides 6
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