"MINERAL COMPONENTS (Authigenic, Detrital, and Volcanic)" BIOGENIC COMPONENTS Sample Interval Name Structures Comments Accessory Carbonate Clay Feldspar Opaque Quartz Volcanic Intraclasts Zeolites Fe-Mn Barite Carbonate Quartz in Chalcedony &/or Opal in Opal Diatoms Dinoflagellates Fish Foraminifers Nannofossils Radiolarians Ostracodes Echinoderm Total Minerals Minerals (silt) Glass Oxides Cement Matrix Quartz Cement Matrix Cement / Organic Matter Remains Fragments "1207A-18H-5, 44-47 cm" Partly Silicified Microlaminated tr 2 1 tr 1 7 66 5 tr 10 8 100 Manganese Nodule Microstromatolitic Contorted Micronodular "1207A-24X-5, 4-6 cm" Silicified Nannofossil Burrows 2 1 2 1 5 88 1 100 Chalk "1207A-26X-CC, 5-7 cm" Partly Silicified Burrows 10 5 1 2 tr 81 1 100 Nannofossil Chalk "1207A-28N-1, 0-3 cm" Silicified Nannofossil Burrows 2 tr 2 1 2 93 tr tr 100 Chalk (silicified) "1207A-28N-1, 3-4 cm" Porcellanite with Laminated Some lephisphere 20 10 45 5 5 15 Radiolarians Burrows textures now (micrite) (silicified (some silicified) chalcedony nannofossils & quartz) "1207B-8R-CC, 3-5 cm" Silicified Nannofossil Chalcedony Relict lephsphere 3 10 78 2 2 5 100 Chalk in vein textures (micrite) (silicified (some ghosts - groundmass) maybe more) "1207B-8R-CC, 9-12 cm" Partly Silicified Burrows 10 20 5 5 50 10 100 Nannofossil Chalk with Radiolarians "1207B-10R-CC, 1-3 cm" Chert/Chalk (Poorly made thin section - not described) "1207B-12R-CC, 3-5 cm" Partly Silicified Burrows Chalk with tr tr 5 tr 92 3 100 Nannofossil Chalk Microfractures porcellanite rim (lephispheres) (?) (% includes clay & silica replacement) "1207B-12R-CC, 12-14 cm" Nannofossil Chalk Burrows Partly silicified 1 1 tr 1 96 1 100 (% includes clay & silica replacement) "1207B-13R-CC, 4-7 cm" Partly Silicified One burrow 10 tr tr 72 1 tr 15 2 100 Nannofossil Chalk (silicified (some radiolarians?) (+ some ghosts?) with Foraminifers nannofossils +cement?) "1207B-14R-CC, 1-3 cm" Silicified Nannofossil Burrows (clay & Forams concentrated 25 tr tr 64 4 5 1 1 ? 100 Chalk carbonate rich - in burrows (recrystallized (microquartz -replaced some chondrites?) nannofossils?) nannofossil and cement?) "1207B, 14R-CC, 15-21 cm" Partly Silicified 10 40 2 12 34 2 tr 100 Nannofossil Chalk (includes opal & with Foraminifers microcrystalline quartz) "1207B-15R-CC, 12-15 cm" Porcellanite Microfractures Chalk left in burrows 2 1 2 95 100 (Partly Silicified Burrows Reaction fronts (irregular streaks Nannofossil Chalk) and blebs) "1207B-15R-CC, 20-22 cm" Silicified Nannofossil Burrows 10 3 tr 50 ? 3 34 tr 100 Chalk (micrite = "(silica cement, " (recrystallized?) recrystallized including brownish nannofossils?) opal(?) cement) "1207B-16R-CC, 14-16 cm" Partly Silicifed Burrows Concentation of clay 50 10 3 33 tr tr 3 1 tr 100 Nannofossil Chalk suggests that clay- (less in pure (matrix/cement) (concentrated at poor sediment first silicified [non-red] chert) chert contact) "1207B-16R-CC, 22-24 cm" Partly Silicified & 65 33 tr 2 100 Micritized Nannofosil (silicified) Chalk "1207B, 18R-CC, 10-11 cm" Partly Silicified 5 77 18 100 Nannofossil Chalk (includes with Radiolarians radiolarian spicules/spines) "1207B-18R-CC, 14-15 cm" Nannofossil Chalk 2 tr 3 88 7 tr tr 100 (in radiolarians & (some partly (+ some clay?) (still opaline) foraminifers) silicified) (some spicules) "1207B-18R-C, 21-22 cm" Nannofossil Chalk 2 tr 1 92 5 tr 100 (in radiolarians (& spicules) & foraminifers) "1207B-19R-CC, 9-11 cm" Partly Silicified Burrows Exellent transition from 20 10 1 tr 28 tr tr 3 30 8 tr 100 Chalk chalk to porcellanite (? Concen- (in forami- "(includes opal," (see lephispheres) (some silicified) to chert trated in nifers) replaced burrows) "nannofossils, &" cement?) "1207B-33R-1, 80-81 cm" Foraminifer- Opal cement in 3 tr 10 25 59 3 100 Nannofossil microfossils has (infilling micro- (some Porcellanite recrystallized to quartz fossils) silicified?) "1207B-37R-CC, 25-27 cm" Partly silicified 5 34 1 tr 10 30 20 tr 100 Radiolarian Nanno- (and replace- (some silicified) fossil Chalk with ment) Foraminifers "1207B-37R-CC, 53-55 cm" Silicified Nannofossil 3 92 1 5 tr tr tr 101 Chalk (many silicified) (may be silicified foraminifers) "1207B-37R-CC, 63-66 cm" Nannofossil 2 1 3 3 1 tr 5 80 5 tr 100 Porcellanite "1207B-37R-CC, 68-73 cm" "Mix of Chert, Chalk, " Burrows Vein containing 3 tr 2 42 8 5 25 15 100 and Porcellanite with carbonate and (micrite) (pyritized (replaced Radiolarians quartz radiolarian groundmass) fragments) "1207B-42R-CC, 40-41 cm" Nannofossil Chalk Brownish color of tr tr tr 5 10 75 10 tr 100 (Porcellanite?) with chalcedony cement (glauconite?) (pyrite) (in vein) (and some Foraminifers and Radiolarians suggests once opal spicules) "1207B-46R-1, 96-98 cm" Nannofossil Chalk Few burrows tr 5 2 3 tr 2 7 80 1 tr 100 (glauconite?) pyrite