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Table T7. Benthic foraminifer occurrences and paleobathymetric interpretations, Hole M0027A. (See table notes.)

Core, section,
interval (cm)
Depth (mbsf) Benthic foraminifer taxa Preservation Comments Paleodepth estimate
(m)
313-M0027A-
6H-1, 145–150 16.73 Barren NA   ?
9H-CC 19.59 Barren NA   ?
13H-CC 25.51 Cibicidoides     ? 50??
15H-CC 27.89 None noted     ?
50H-CC, 55–60 96.12 Barren NA Paleosol, Sphaerosiderite ?
64H-CC 192.09 Barren     ?
65X-CC, 11–13 195.53 1 Plectofrondicularia amorneyae G   ?
66X-3, 30–32 198.15 Barren     ?
70X-CC, 0–2 208.92 Lenticulina–Hanzawaia concentrica–Nonionella pizarrensis; R: Buliminella gracilis M–G   15–50
73X-CC, 0–3 213.14 A: Lenticulina–Hanzawaia concentrica–Nonionella pizarrensis; C: Buliminella gracilis; R: Lagena, Cibicides lobatulus, Fissurina, Pararotalia, Cancris sagra   All stained 25–50
80R-CC, 0–15 227.65 A: Lenticulina–small Nonionella pizarrensis; R: Hanzawaia concentrica, Bulimina mexicana, polymorhinid, agglutinants, Rectuvigerina lamelata; C: Uvigerina juncea; F: Buliminella gracilis M–G Large Lenticulina—beat up; small ones are nice 25–50
81R-1, 103–108 229.44 A: Lenticulina (and lenticulinids); C–A: Nonionella pizarrensis, Bulimina mexicana, Buliminella gracilis, Uvigerina juncea (and others); R: polymorphinid, Rectuvigerina cf. senni, Lagena, Fissurina, Cibicidoides VG   50–80
89R-CC, 0–2 255.90 A: Nonionella pizarrensis, Lenticulina; C: Hanzawaia; F: Cibicidoides, Bolivina spp., R: agglutinants, Bulimina macilenta VG   25–50
91R-CC, 9–10 262.05 A: Nonionella pizarrensis; R–F: Buliminella gracilis; R: Uvigerina juncea VG   25–50
93R-1, 145–150 266.46 A: Lenticulina–Nonionella pizarrensis; C: Hanzawaia concentrica; F: Uvigerina juncea, Buliminella gracilis; R: agglutinants VG   25–50
95R-1, 139–143 272.50 A: Nonionella pizarrensis; C: Hanzawaia concentrica, R: agglutinants, Bolivina, Pararotalia bassleri VG   25–50
95R-1, 143–148 272.54 A: Nonionella pizarrensis; C: Hanzawaia concentrica, R: agglutinants, Bolivina, Pararotalia bassleri VG   25–50
97R-CC, 0–10 280.40 A: Nonionella pizarrensis, Hanzawaia; C: Buliminella gracilis; R: Uvigerina juncea VG   25–50
98R-1, 144–145 281.70 A: Nonionella pizarrensis; C: Buliminella gracilis, Hanzawaia concentrica; R: agglutinants, Cibicidoides VG   25–50
101R-3, 34–38 292.76 A: Nonionella pizarrensis (24); R: miliolid (1), Hanzawaia concentrica (2); F: Buliminella gracilis (12); C–A: Uvigerina juncea (6) VG   50–80
104R-1, 62–64 299.18 Lenticulina (4); Nonionella pizarrensis (33); Bolivina marginata var. multicostata (4); Hanzawaia concentrica (4); Uvigerina juncea (7); Buliminella gracilis (2);?? (2) E   50–80
105R-CC, 0–11 304.95 Barren     ?
112R-CC 326.11 Nonionella pizarrensis, Lenticulina, Buliminella gracilis, Bolivina     50–80
115R-2, 76–78 334.37 Buliminella gracilis (17); Uvigerina juncea (3); Nonionella pizarrensis (4); Bolivina marginata var. multicostata (4) G–VG   50–80; probably deeper than 104–1
119R-1, 66–68 340.09 Lenticulina (5); Cibicidoides pachyderma (3); Buliminella gracilis (3); Hanzawaia concentrica (12); Nonionella pizarrensis (1); Bulimina mexicana (1); Uvigerina auberiana (1); Uvigerina juncea (3) P–VG   75–100 with downslope transport
146R-1, 73–74 415.19 Barren     ?
147R-1, 145–150 418.96 Barren     ?
148R-CC 423.68 A: Buliminella gracilis (dozens); F: Nonionella pizarrensis (6); R: Lenticulina (1); Uvigerina juncea (1); Hanzawaia (3); Plectofrondicularia morneyae (1) VG   50–80 (deep end)
149R-CC, 11–13 426.71 Dentalina (1); Stilostomella (1); Nonionella pizarrensis (2); Buliminella gracilis (6) VG Rare foraminifers 50–80
150R-CC, 6–8 429.72 Barren     ?
151R-1, 155–160 431.26 Barren     ?
151R-2, 145–147 432.76 Barren     ?
151R-CC 432.78 Foraminifers in pan fraction: Buliminella, Trifarina, Cibicides, Discorbis     50–80
154R-1, 141 440.27 Buliminella, Lenticulina, Sphaeroidina bulloides     50–80
154R-2, 72–77 441.08 Buliminella gracilis (1); R: Buliminella gracilis in pan fraction     ??50–80
159R-CC 457.54 Barren (maybe 1 Buliminella gracilis)     ??50–80
161R-CC, 8–10 463.61 Barren     ?
161R-CC(?) (?)463.63 C: Buliminella gracilis, Nonionella pizarrensis; Uvigerina juncea     50–80 or deeper
163R-CC, 13–15 469.79 A: Nonionella pizarrensis; C: Lenticulina; R: Buliminella gracilis (1); Uvigerina juncea (1)     25–50
165R-CC, 5–7 475.81 A: Nonionella pizarrensis; F: Cibicidoides (6); R: Lenticulina (1); Uvigerina juncea (1); Fissurina (1); Plectofrondicularia (2); Stilostomella (1); Dentalina (1); Buliminella gracilis (3); Gyroidinoides (1); Hanzawaia (3)     25–50
167R-CC, 11–13 481.60 Barren     ?
169R-CC, 11–13 487.68 Barren     ?
171R-CC, 11–13 492.46 Barren     ?
175R-CC, 11–13 500.21 Barren     ?
177R-CC, 11–13 506.33 Barren     ?
179R-CC, 13–15 509.30 A: Buliminella gracilis, Rectuvigerina lamelata, Rectuvigerina multicostata, Nonionella pizarrensis; F: Lenticulina, Uvigerina juncea,Hanzawaia concentrica; R: Cibicidoides, Gyroidinoides, Pletofrondicularia P–G Abundant, diverse foraminifers >100
183R-CC, 6–8 518.50 A: Uvigerina juncea, Rectuvigerina lamelata, Rectuvigerina multicostata, Buliminella gracilis, Pullenia salisburyi, Nonion, Cibicidoides, Melonis barleeanus, Gyroidinoides, Lenticulina, polymorph, Stilostomella, Hanzawaia mantaensis, Cibicidoides pachyerma, Anomalinoides spissiformis VG Abundant (>250), diverse foraminifers >100
185R-CC, 15–17 520.96 Siphonina danvellensis, Sphaeroidina bulloides, Pletofrondicularia, Trifarina wilcoxensis, Cibicidoides, Globocassidulina subglobosa, Melonis barleeanus, Gyroidinoides, Alabamina mississippiensis, Hanzawaia mantaensis, Oridorsalis, Cibicidoides pachyderma, Uvigerina auberiana and several costate Uvigerina (continuous across chambers), Fursenkoina fusiformis, Coryphostoma georgiana, Cibicidoides primulus VG   100–200
187R-CC, 8–10 527.68 Barren     ?
188R-CC, 8–9 530.17 Barren     ?
189R-CC, 6–8 533.58 A: Globobulimina, Lenticulina, Buliminella gracilis (A 150–250); C: Nonionella pizarrensis; F: costate Uvigerina; C: Pletofrondicularia, Gyroidinoides P–G   50–80
191R-CC, 4–6 539.19 Broken Lenticulinids     ?
192R-2, 147–148 542.48 >250: A: Lenticulina, Nonionella pizarrensis, costate Uvigerina; C: polymorph, Gyroidinoides, Hanzawaia concentrica, Pletofrondicularia 150–250: Lenticulina, Nonionella pizarrensis, Buliminella curta, Hanzawaia mantaensis, Cibicidoides pachyderma, Fissurina, Trifarina wilcoxensis, Anomalinoides spissiformis, Marginulina P–VG   >100
193R-CC, 10–12 545.61 Barren     ?
195R-2, 9–11 549.60 A: Lenticulina, polymorph, large costate Uvigerina; F-C: Lenticulina, Nonionella pizarrensis, Gyroidinoides P–VG Abundant, diverse foraminifers 80–100
198R-CC 555.19 Melonis barleeanus, Nonionella pizarrensis, Cibicidoides, Anomalinoides, Pullenia, Cassidulina, Lenticulina, Buliminella gracilis, Bolivina     ?80
199R-3, 19–21 557.95 Lenticulina (1); Pletofrondicularia (1); shallow Hanzawaia (1); Nonionella pizarrensis (1)   Rare benthics, much shallower than above 15–50
201R-CC 564.21 A: Lenticulina, polymorph; C: Cibicidoides, Anomalinoides spissiformis; R: Fissurina, Buliminella curta, Globobulimina, Coryphostoma georgiana P–G   ?75–100
205R-CC 576.15 Fragments     ?
206R-CC 579.19 Lenticulina, costate Uvigerina, Nonionella pizarrensis, polymorph, Anomalinoides spissiformis   Rare foraminifers 50–100
207R-3, 10–12 582.26 C: Lenticulina, Nonionella pizarrensis; costate Uvigerina; Nodosaria, Plectofrondicularia morneyae, polymorph, Melonis barleeanus P–G Rare foraminifers 50–100
208R-2, 139–141 585.10 A: costate Uvigerina, Plectofrondicularia morneyae, Anomalinoides spissiformis; R: Lenticulina M–G Foraminifers >100
209R-3, 33–36 588.51 Lenticulina, Sphaeroidina bulloides, Nonionella pizarrensis, Gyroidinoides, Melonis barleeanus, agglutinants, Oridorsalis, Cibicidoides primulus, Cibicidoides pachyderma, Cibicides spp., R: costate Uvigerina M–G Abundant, diverse foraminifers >100
209R-CC 588.51 Nonionella pizarrensis, Sphaeroidina bulloides, Oridorsalis, Gyroidinoides, Melonis barleeanus     >100
210R-CC 591.31 Melonis pompilioides, Sphaeroidina bulloides, Lenticulina, Gyroidinoides, large costate Uvigerina, polymorph, Nonionella pizarrensis, Ceratatobulimina, Cassidulinoides, striate Plectofrondicularia, costate and hispid Stilostomella P–M Foraminifers >80, perhaps >100
210R-CC, 0–3 591.31 Nonionella pizarrensis, Pullenia quinqueloba, Melonis barleeanus, costate Stilostomella, Stilostomella subspinosa, Sphaeroidina bulloides, Lenticulina, Siphonina, costate Uvigerina (not continuous), polymorph P–M Abundant foraminifers >80, perhaps >100
211R-1, 144–145 592.80 A: Uvigerina juncea, Melonis barleeanus, Nonionella pizarrensis, Sphaeroidina bulloides, others     >100
211R-CC, 0–2 593.96 Dentalina, Lenticulina, Hoeglundina elegans, Melonis pompilioides, Hanzawaia mantaensis, polymorph, costate Uvigerina, Plectofrondicularia, Nonionella pizarrensis, costate Stilostomella, Stilostomella subspinosa, Lagena, agglutinants (~Textularia), Cibicidoides pachyderma, Siphonina danvellensis P–G Abundant benthics >100
212R-CC 597.88 Sphaeroidina bulloides, Melonis barleeanus, Uvigerina juncea, Oridorsalis, Anomalinoides     >100
214R-CC, 12–14 602.01 Nodosaria, Nonionella pizarrensis, Gyroidinoides, costate Uvigerina, costate Stilostomella, Sphaeroidina bulloides, Oridorsalis, polymorph, Lenticulina, Stilostomella subspinosa, Alabamina mississippiensis P–G Abundant benthics >100
217R-2, 103–106 612.19 A: large costate Uvigerina, Lenticulina, Siphonina danvellensis, Nonionella pizarrensis, Melonis barleeanus, Cassidulina crassa, Plectofrondicularia, ~Cibicidoides pachyderma P–G   >100
218R-2, 103–106 615.24 Barren     ?
219R-3, 24–28 619.00 A: costate Uvigerina and Uvigerina spp., Oridorsalis, Siphonina danvellensis, Sphaeroidina bulloides, Melonis barleeanus, Hanzawaia spp., ~Cibicidoides pachyderma, Stilostomella subspinosa, Stilostomella spp., costate Stilostomella, Hoeglundina elegans, Gyroidinoides P–G   >100
220R-CC 620.83 Uvigerina juncea, Siphonina, Osangularia, Lenticulina, Sphaeroidina bulloides, Bulimina jacksonensis     >100
222R-CC 624.97 Uvigerina juncea     >75
223R-CC 627.58 A: large costate Uvigerina; costate Stilostomella, Lenticulina, Hoeglundina elegans,Cibicidoides, polymorph, Siphonina, Melonis pompilioides, Cibicidoides pachyderma, Pullenia bulloides M Abundant, diverse >100

Notes: Sample depths to be added. A = abundant, C = common, F = few, R = rare. Preservation: E = excellent, VG = very good, G = good, M = moderate, P = poor. N/A = not available. Nonionella pizarrensis includes possible Nonionella grateloupi. Buliminella gracilis = Caucasina elongata? Gyroidinoides includes possible Gyroidinoides nipponica. Polymorph = Guttulina austriaca, Guttulina candata, undifferentiated polymorphinids. Siphonina danvellensis = ?Pulsiphonina prima.

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