Expedition 320/321 Scientists Expedition 320/321 summary

Figure F12. Stratigraphic summary plots, PEAT Sites U1331–U1338 and ODP Site 1218. Green = Eocene, blue = Oligocene, yellow = Miocene, pink = Pliocene–Pleistocene.

Site U1331 Site U1332 Site U1333 Site 1218 Site U1334 Site U1336 Site U1335 Site U1337 Site U1338 (5116 m water depth) (4924 m water depth) (4854 m water depth) (4828 m water depth) (4788 m water depth) (4286 m water depth) (4327 m water depth) (4463 m water depth) (4200 m water depth)

0 0 0 0 0 0 Magnetic stratigraphy Magnetic stratigraphy Series Radiolarians Lithology Lithologic unit Depth CSF (m) Lithology Lithologic unit Series Calcareous nannofossils Radiolarians Calcareous nannofossils Depth CSF-A (m) Depth CSF (m) Depth CSF (m) Depth CSF (m) Depth CSF (m) Depth (mbsf) Depth CSF (m) Calcareous nannofossils Calcareous nannofossils Calcareous nannofossils Calcareous nannofossils Calcareous nannofossils Calcareous nannofossils Radiolarians Radiolarians Foraminifers Radiolarians Foraminifers Radiolarians Foraminifers Radiolarians Foraminifers Diatoms Radiolarians Foraminifers Diatoms Radiolarians Series Series Series Series Series Series Series Magnetic stratigraphy Magnetic stratigraphy Magnetic stratigraphy Magnetic stratigraphy Magnetic stratigraphy Magnetic stratigraphy Magnetic stratigraphy Lithology Lithology Lithology Lithology Lithology Lithology Lithology Lithologic uinit Lithologic unit Lithologic unit Lithologic unit Lithologic unit Lithologic unit Lithologic unit 0 0 0 C1n C2r C6n 20 20 20 20 NN20-NN21 20 RN16- 20 I BBarrenarren C1r.2r I RN15 Mixed C2n M9b PT1a C1n NN20- NN20-NN21 RN16-RN17 PT1b F. doliolus Plei. RN2 C5An.2n C3n.4n RN6 RN14 RN17 PT1b F. doliolus C1n BarrenBarren RN1 C2r.2r NN1- C6Ar Pleisto- cene RN14 RN7 C3An.1n N12 C5Ar.1r RN14 Pleist. NN21 C1n C10r I C6AAr.1r Barren BarrenBarren C3Br.1n NN19 RN13 PL6 F. reinholdii RP21 NN2 C4Ar.1n M8- C1r.2r RN14 C4Ar.2n NN6 RN12 PL4-PL5 PT1a early Miocene RN6 IIa NP23 RN1 C5r.1n M9a NN18 RN13 BarrenBarren Mixed C3n.1n M9b C5An.1n N11 C5ABn RN11 Pleistoc. NN19 RN1 C6Br C3n.4n C5An.2n

RP20 early Miocene NN16 C1r.1n 20 NP22 C12r 20 C6Br 20 C5AAn RN5 PL1- C2Ar NN19 PT1a F. reinholdii NN1 Pliocene C3An.1n NN6 early Oligocene RN5 C5ABn PL6 C1r.1n C3An.2n I M6- RN10 RN13 C13n N8- C5ACn N9- C5ACn NN13-NN15 R. (5) NP21 C6Cr 40 I C3Bn 40 NN4-NN5 C5ADn 40 M7 40 PL3 40 Pleistocene C1r.2r 40 RN12 II NN1 RP22 Pliocene C13r RP22 C4n N12 M5- C5Bn.1n N10 NN18 praebergonii C2r RP19 NP25 C8n.2n RN7 C4An C5Bn.2n NN12 Barren C8r C5n M9a NN4- I C3r I I C9n NN4 PL6 NN17 PL5 C5An.2n middle Miocene C5Cn.1n RN9 late Oligocene C16n.2n C9r C8n.2n Mio. l. C5An.1n NN5 M5b M14 NN18 RN12 C2r C2An.1n RP18 RP21 RN6 C5AAn RN4 RN11b C5ABn I C3Ar NN18 NP25 C8r C5ACn NN3-NN4 C5Dn middle Miocene 40 40 C10r 40 C5ADn Barren C5Br NN11 NN17 PL5 NN16 C17n.1n RN5 C5Bn C5En C2An.1n -20 C11n.1n NP24 RN3 RN4 RN8 RN11b RN11a PL3 NP23 C9n M5a M13b late Eocene C5Cn M2-M6 IIb C11n.2n RP21 RN4 C4r.2r NN16 RP17 C11r 60 C5Dn 60 C6n 60 60 60 60 RN10 C2Ar m. Mio. m. R. C18n.1n III C12n C9r C6Cr C4An NP17 late Oligocene C10n.1n RN3 C5En RN7 RN11a praebergonii C2An.2n NN15/ PL2 C5Dn NN10 M13a PL3

C6n NN4 M4 Pliocene RP16 RP20 C6An.1n C4An NN14/ 60 C18n.2n 60 C12r 60 II RN2 C5Dr - BarrenBarren NP22 C10r RN2 C6An.1n C6An.2n RN3 NN9 C2Ar NN13 N. jouseae C6An.2n NN2 M1b C5En M12 C5n late Miocene 1n/2n RN10 PL1b-

Pliocene NN15/ early Oligocene C13n RP15 NP21 C11n.1n C6AAn C6AAn C3n.1n C12r C6AAr.1n NN14/ PL2 PL1a C18r C13n NP23 80 80 C6AAr.1n 80 80 NN7 M11 80 80 C11n.2n RN1 C6AAr.2n C6n RN6 NN13 BarrenBarren C13r C6Bn.1n C6AAr.2n M2- (1) RP19 C6Bn.2n N13 M10 C3n.2n NN12 80 80 80 C11r C6Bn.1n N. jouseae C6Cn.1n early Miocene M3 RP18 early Miocene C3n.3n IIc C19n NP18- C16n.2n C12n C6Cn.2n RN1 C6Bn.2n RP20 M1a RN9 IVa NP20 RP17 C17n.1n C6Cn.3n C6Cn.1n RN2 PL1b- C3n.4n T. convexa NP16 PL1a C19r late Eocene RP22 C6Cn.2n NN12 RP14 M9b early Oligocene C7n.1n 100 NN6 100 100 NP17 RP16 C18n.1n 100 100 C6Cn.3n 100 100 C12r C7n.2n NN1 T. convexa M14 100 100 NN2 N12 RN9 BarrenBarren C18n.2n NP22 C7An RP22 C20n NP21 C8n.1n C7n.1n RP15 C18r C13n C7n.2n early Miocene M1b C5AAn C3An.1n RP19 C8n.2n RN5 C5AAr IVb C13r M8- NP15 NP16 C19n M14- RP13 RP18 C7An M9a C5ABn

middle Eocene NP18- 120 120 120 C16n.2n 120 C5ABr 120 M13b C3An.2n 120 C19r 120 120 O6 C8n.1n 120 RN1 N. miocenica NN11 NP20 RP17 N10- C5ACn IIIa RP14 C17n.1n M7 C20r late Eocene II C8n.2n N11 NN11 C3Ar IVc C9n II middle Eocene NP15 NP25 NN4-5 C5ADn N. miocenica RP12 middle Miocene RP16 late Oligocene NP17 C18n.1n RP21 RN8 C3Br 140 140 II M1a 140 BarrenB RP13 IIIa C18n.2n C10n.1n C5ADr II RN8 V 140 140 140 140 140 N. porteri 140 NP14 RP15 C18r C10n.2n C5Bn.1n C4n M13b BarrenBarren C9n C5Bn.1r C21n VI RP11 M5-M6 C5Bn.2n NP16 RP22 M13a

152.4 DSF (m) RP14 C19r late Oligocene O4-O5 NN1 C4r 160 RP21 RN7 N. porteri 160 160 C20n C5Br IIIb RP10 NP24 RN4 middle Eocene C20r late Miocene C11n.1n late Miocene C10n.1n C4An 160 C5Cn.1n 160 NN10 RP13 160 C11n.2n 160 160 160 RN7 IIIb C10n.2n RP9 NP15 NN4 C23n.1r O6 C5Cr 180 BBarrenarrenn T. yabei NN10 180 IIIc 180 IV C12n NP1NP133 RP8 C23n.2n V II M4 C5Dn II C5Dr IV early Eocene NP12 Barren 184.1 DSF (m) NN9 C4An Chert C5Dr C5n V 180 180 O3 C11n.1n 180 180 180 180 M13a T. yabei RP20 NP25 Barren NP23 C11n.2n NN3 C5En 200 200 200 early Oligocene C11r RN3 A. late Oligocene moronensis 190.6 DSF (m) C5Er NN8 RN6 O2 NP24 NN9 Rare- O5 Barren C5n 200 200 RP20 200 200 200 200 NN7 A. RP19 C. moronensis coscinodiscus NN8 M13a early Oligocene M2-M3 RP18 O1-O2 M11 M11-M13 NP22 BarrenBarren O4 III late Eoc. RP17 RN6 M11 N13 M10 220 220 220 220 II 220 220 RP16 III C. gigas NP21 V. diorama NN7 M8- C. (2) Calcareous Siliceous RP19 N12 coscinodiscus RP15 NP23 O3 RN2 M9 N13 M10 Nannofossil ooze Nannofossil chalk Radiolarian ooze Radiolarite NN6 IVa NP19- E13- 240 240 240 240 240 C. lewisianus 240 RP15 NP20 RP18 E16

Foraminifer ooze Calcareous chalk Diatomite III late Eocene NN2 Diatom ooze middle Eocene / N11 IVb RP14 Diatom-radiolarian BarrenBaaerren RP17 early Oligocene Calcareous ooze Limestone Chert NP18 RN5 ooze V (basalt) 280 280 280 280 M7 280 C. gigas NP17 O1-O2 M1b V. diorama

260 early Miocene 260 260 260 276.8 mbsf 260 BarrenBarren 260 IV m. Eocene m. N12 M9b Clayey nannofossil ooze Dolostone Clayey radiolarite Porcellanite N10 NN6 285.5 DSF (m)

middle Miocene NN5 Radiolarian nannofossil Clayey nannofossil Nannofossil radiolarian Clayey radiolarian 300 300 NP22 300 300 300 C. peplum RN5 C. lewisianus ooze chalk ooze N9 M6 ooze 302.9DSF (m) RN1 III M8 Nannofossil chalk Radiolariite M5b -9a C5AAn middle Miocene with increasing 320 320 320 N11 (1) Pliocene/Miocene boundary (1.81 Ma) M6- C5ABn dolomite M7 Siliciclastics M1a M5a (3) Nannofossil chalk (2) late/middle Miocene boundary (11.61 Ma) RN4 N9-N10 C5ACn with increasing Clay/Claystone (3) middle/early Miocene boundary (15.97 Ma) NN4 RN4 340 340 Barren 340 NN5 diatoms (4) Oligocene/Miocene boundary (23.03 Ma) C. nicobarica Radiolarian clay M5b C5ADn Basalt (5) Eocene/Oligocene boundary (33.8 Ma) C. peplum M4 Greenish gray color Clay with chert 360 360 360 NN4-5 NN3 RN3 T. pileus RP22 C5Bn.2n NN1 380 380 M2- 380 RN3 M5a M3 C5Br O6 C. elegans NN4 M3-M4 M2-M3 early Miocene RN2 400 400 400 late Oligocene RP21 NN2 Barren early Miocene M1b- Barren M2 NP25 Barren M2 IV 420 III 420 420 416.1 DSF (m) 421.1 DSF (m) Barren

RN1 M1a 440 NN1 Barren (4) IV Olig. O6 449.8 DSF (m)

Proc. IODP | Volume 330/321 68