Head, Martin J; Norris, Geoffrey; Mudie, Peta J (1989): Stratigraphic distribution of marine palynomorph species recorded for the Miocene of ODP Hole 105-645E (Table 1) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.743927, Supplement to: Head, MJ et al. (1989): Palynology and dinocyst stratigraphy of the Miocene in ODP Leg 105, Hole 645E, Baffin Bay. In: Srivastava, SP; Arthur, M; Clement, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 105, 467-514, https://doi.org/10.2973/odp.proc.sr.105.137.1989
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Abstract:
A total of 145 samples were analyzed for palynology, and all were found to be productive. Residues are dominated by pollen, terrestrial spores, and land plant tissues. Marine palynomorphs occur in all samples, which allowed us to recognize five Miocene dinocyst assemblage zones. Dinocyst assemblages indicate cool-water conditions and suggest a neritic rather than fully oceanic environment, with not only North Atlantic and Norwegian Sea affinities, but also containing both notable protoperidiniacean and possible endemic elements. Dinocyst assemblages indicate an early Miocene age for the bottom of Hole 645E and an age no younger than early late Miocene (Sample 105-645E-24R, CC) near the top of the interval studied. These age assignments provide an estimated initiation of ice rafting in Baffin Bay at between 7.4 and 9.5 Ma. Increased terrigenous influx and apparent disappearance of certain dinocyst taxa occur in the middle to late Miocene and may be related to oceanographic changes or climatic deterioration. Spores and pollen indicate a climate that varied within a temperate regime during the early and middle to early late Miocene, followed by climatic deterioration.
Four new dinocyst species are described: Batiacasphaera gemmata, Impletosphaeridium prolatum, Operculodinium vacuolatum, and Selenopemphix brevispinosa. The acritarch genus Cyclopsiella Drugg and Loeblich is emended, and two new combinations have been created: Cyclopsiella granosa (Matsuoka) and Cyclopsiella? laevigata (Chateauneuf). Cyclopsiella granosa (Matsuoka) n. comb. is considered a subjective junior synonym of Cyclopsiella granulata He and Li. Ascostomocystis granulatus Chateauneuf has been provisionally allocated to Cyclopsiella and renamed Cyclopsiella? chateauneufii. Two new acritarch species are described: Cyclopsiella spiculosa and Cymatiosphaera! baffinensis.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 70.458000 * Longitude: -64.655000
Date/Time Start: 1985-09-13T17:00:00 * Date/Time End: 1985-09-27T20:30:00
Minimum Elevation: -2018.0 m * Maximum Elevation: -2018.0 m
Event(s):
105-645E * Latitude: 70.458000 * Longitude: -64.655000 * Date/Time Start: 1985-09-13T17:00:00 * Date/Time End: 1985-09-27T20:30:00 * Elevation: -2018.0 m * Penetration: 1147.1 m * Recovery: 535.57 m * Location: Baffin Bay * Campaign: Leg105 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 78 cores; 720.9 m cored; 0 m drilled; 74.3 % recovery
Comment:
Species abundance: R = rare, C = common, A = abundant, DR = presumed reworking, - = absent.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Epoch | Epoch | Head, Martin J | Age model, paleomag, Berggren et al (1985) | ||
| 2 | Dinoflagellate zone | Dinofl zone | Head, Martin J | |||
| 3 | Sample code/label | Sample label | Head, Martin J | DSDP/ODP/IODP sample designation | ||
| 4 | Xandarodinium sp. | Xandarodinium sp. | Head, Martin J | sp. A | ||
| 5 | Batiacasphaera gemmata | B. gemmata | Head, Martin J | n. sp. | ||
| 6 | Batiacasphaera sp. | Batiacasphaera sp. | Head, Martin J | cf. B. baculata | ||
| 7 | Evittosphaerula paratabulata | E. paratabulata | Head, Martin J | |||
| 8 | Distatodinium paradoxum | D. paradoxum | Head, Martin J | s.l. | ||
| 9 | Systematophora ancyrea | S. ancyrea | Head, Martin J | |||
| 10 | Impletosphaeridium prolatum | I. prolatum | Head, Martin J | n. sp. | ||
| 11 | Cordosphaeridium minimum | C. minimum | Head, Martin J | sensu Benedek and Sarjeant | ||
| 12 | Lingulodinium machaerophorum | L. machaerophorum | Head, Martin J | |||
| 13 | Palaeocystodinium golzowense | P. golzowense | Head, Martin J | |||
| 14 | Lejeunecysta spp. | Lejeunecysta spp. | Head, Martin J | mainly L. fallax s.l. | ||
| 15 | Brigantedinium spp. | Brigantedinium spp. | Head, Martin J | cf. Brigantedinium spp. of Head et. al, a (1989) | ||
| 16 | Operculodinium centrocarpum | O. centrocarpum | Head, Martin J | |||
| 17 | Reticulatosphaera actinocoronata | R. actinocoronata | Head, Martin J | |||
| 18 | Batiacasphaera micropapillata | B. micropapillata | Head, Martin J | complex | ||
| 19 | Impagidinium pallidum | I. pallidum | Head, Martin J | genus questionable | ||
| 20 | Nematosphaeropsis lemniscata | N. lemniscata | Head, Martin J | |||
| 21 | Selenopemphix sp. | Selenopemphix sp. | Head, Martin J | sp. 1 | ||
| 22 | Dinopterygium cladoides | D. cladoides | Head, Martin J | sensu Morgenroth | ||
| 23 | Lophocysta sp. | Lophocysta sp. | Head, Martin J | |||
| 24 | Melitasphaeridium choanophorum | M. choanophorum | Head, Martin J | |||
| 25 | Acritarch sp. | Acritarch sp. | Head, Martin J | sp. 1 | ||
| 26 | Pyxidiella-Pyxidiniopsis group | Pyxidiella-Pyxidiniopsis | Head, Martin J | |||
| 27 | Acritarch sp. | Acritarch sp. | Head, Martin J | sp. 2 | ||
| 28 | Heteraulacacysta sp. | Heteraulacacysta sp. | Head, Martin J | A of Costa and Downie 1979 | ||
| 29 | Dapsilidinium pseudocolligerum | D. pseudocolligerum | Head, Martin J | |||
| 30 | Hystrichokolpoma rigaudiae | H. rigaudiae | Head, Martin J | |||
| 31 | Paralecaniella indentata | P. indentata | Head, Martin J | |||
| 32 | Spiniferites spp. | Spiniferites spp. | Head, Martin J | Spiniferites/Achomosphaera spp. | ||
| 33 | Operculodinium sp. | Operculodinium sp. | Head, Martin J | |||
| 34 | Cribroperidinium tenuitabulatum | C. tenuitabulatum | Head, Martin J | |||
| 35 | Lophocysta sp. | Lophocysta sp. | Head, Martin J | cf. L. sulcolimbata | ||
| 36 | Impagidinium sp. | Impagidinium sp. | Head, Martin J | sp. 1 | ||
| 37 | Hystrichosphaeropsis sp. | Hystrichosphaeropsis sp. | Head, Martin J | cf. H. obscura | ||
| 38 | Selenopemphix sp. | Selenopemphix sp. | Head, Martin J | genus questionable, sp. 2 | ||
| 39 | Apteodinium spiridoides | A. spiridoides | Head, Martin J | |||
| 40 | Cordosphaeridium cantharellum | C. cantharellum | Head, Martin J | reworked? | ||
| 41 | Dinoflagellate cyst indeterminata | Dinofl indet | Head, Martin J | Gen. et sp. indet. Piasecki 1980 group | ||
| 42 | Palaeocystodinium cf. golzowense | P. cf. golzowense | Head, Martin J | sensu Powell, 1986b | ||
| 43 | Impagidinium sp. | Impagidinium sp. | Head, Martin J | sp. 7 | ||
| 44 | Labyrinthodinium truncatum | L. truncatum | Head, Martin J | |||
| 45 | Pyxidinopsis sp. | Pyxidinopsis sp. | Head, Martin J | genus questionable, sp. 1 | ||
| 46 | Pyxidinopsis sp. | Pyxidinopsis sp. | Head, Martin J | sp. 2 | ||
| 47 | Thalassiphora sp. | Thalassiphora sp. | Head, Martin J | genus questionable, sp. 1 | ||
| 48 | Selenopemphix brevispinosa | S. brevispinosa | Head, Martin J | n. sp. | ||
| 49 | Nematosphaeropsis downiei | N. downiei | Head, Martin J | |||
| 50 | Sumatradinium sp. | Sumatradinium sp. | Head, Martin J | sp. B | ||
| 51 | Tectatodinium sp. | Tectatodinium sp. | Head, Martin J | cf. Tectatodinium sp. 1 Manum 1976 | ||
| 52 | Sumatradinium sp. | Sumatradinium sp. | Head, Martin J | of Duffield and Stein 1986 | ||
| 53 | Cymatiosphaera baffinensis | C. baffinensis | Head, Martin J | genus questionable. n. sp. | ||
| 54 | Sumatradinium sp. | Sumatradinium sp. | Head, Martin J | sp. A | ||
| 55 | Batiacasphaera sphaerica | B. sphaerica | Head, Martin J | |||
| 56 | Foraminifera, linings | Foram lin | Head, Martin J | Microforaminiferal lining | ||
| 57 | Selenopemphix nephroides | S. nephroides | Head, Martin J | |||
| 58 | Nematosphaeropsis labyrinthus | N. labyrinthus | Head, Martin J | |||
| 59 | Cyclopsiella spiculosa | C. spiculosa | Head, Martin J | n. sp. | ||
| 60 | Impagidinium sp. | Impagidinium sp. | Head, Martin J | sp. 4 | ||
| 61 | Spiniferites pseudofurcatus | S. pseudofurcatus | Head, Martin J | |||
| 62 | Cerebrocysta sp. | Cerebrocysta sp. | Head, Martin J | genus questionable, sp. 1 | ||
| 63 | Pentadinium laticinctum laticinctum | P. laticinctum laticinctum | Head, Martin J | |||
| 64 | Trinovantedinium sp. | Trinovantedinium sp. | Head, Martin J | sp. A | ||
| 65 | Operculodinium israelianum | O. israelianum | Head, Martin J | |||
| 66 | Impagidinium maculatum | I. maculatum | Head, Martin J | sensu Manum et al., (1989) | ||
| 67 | Batiacasphaera sp. | Batiacasphaera sp. | Head, Martin J | genus questionable, sp. 1 | ||
| 68 | Impagidinium sp. | Impagidinium sp. | Head, Martin J | sp. 6 | ||
| 69 | Invertocysta tabulata | I. tabulata | Head, Martin J | |||
| 70 | Pyxidinopsis sp. | Pyxidinopsis sp. | Head, Martin J | sp. 3 | ||
| 71 | Selenopemphix sp. | Selenopemphix sp. | Head, Martin J | sp. 3 | ||
| 72 | Cannosphaeropsis sp. | Cannosphaeropsis sp. | Head, Martin J | cf. Cannosphaeropsis sp. sp. A Wrenn and Kokinos 1986 | ||
| 73 | Nematosphaeropsis sp. | Nematosphaeropsis sp. | Head, Martin J | sp. A | ||
| 74 | Habibacysta tectata | H. tectata | Head, Martin J | Head et. al., b (1989) | ||
| 75 | Cymatiosphaera sp. | Cymatiosphaera sp. | Head, Martin J | genus questionable | ||
| 76 | Trinovantedinium sp. | Trinovantedinium sp. | Head, Martin J | genus questionable, sp. C | ||
| 77 | Trinovantedinium sp. | Trinovantedinium sp. | Head, Martin J | sp. B | ||
| 78 | Labyrinthodinium sp. | Labyrinthodinium sp. | Head, Martin J | cf. L. truncatum | ||
| 79 | Impagidinium spp. | Impagidinium spp. | Head, Martin J | |||
| 80 | Impagidinium aquaeductum | I. aquaeductum | Head, Martin J | |||
| 81 | Pentadinium sp. | Pentadinium sp. | Head, Martin J | sp. B | ||
| 82 | Impagidinium sp. | Impagidinium sp. | Head, Martin J | sp. 2 | ||
| 83 | Pentadinium sp. | Pentadinium sp. | Head, Martin J | genus questionable, sp. A | ||
| 84 | Cristadinium sp. | Cristadinium sp. | Head, Martin J | sp. 1 | ||
| 85 | Impagidinium sp. | Impagidinium sp. | Head, Martin J | sp. 5 | ||
| 86 | Dinoflagellate cyst indeterminata | Dinofl indet | Head, Martin J | cf. Gen. et sp. indet. Piasecki 1980 | ||
| 87 | Spiniferites sp. | Spiniferites sp. | Head, Martin J | sp. 1 | ||
| 88 | Cannosphaeropsis sp. | Cannosphaeropsis sp. | Head, Martin J | genus questionable, sp. 1 | ||
| 89 | Impletosphaeridium sp. | Impletosphaeridium sp. | Head, Martin J | sp. 1 | ||
| 90 | Operculodinium sp. | Operculodinium sp. | Head, Martin J | sp. 1 | ||
| 91 | Scolecodonta | Scolecodonta | Head, Martin J | |||
| 92 | Pyxidinopsis sp. | Pyxidinopsis sp. | Head, Martin J | genus questionable, sp. 4 | ||
| 93 | Cristadinium cristatoserratum | C. cristatoserratum | Head, Martin J | Head et al., b (1989) | ||
| 94 | Impagidinium sp. | Impagidinium sp. | Head, Martin J | cf. I. paradoxum | ||
| 95 | Leiosphaeridia sp. | Leiosphaeridia sp. | Head, Martin J | |||
| 96 | Cristadinium sp. | Cristadinium sp. | Head, Martin J | sp. 2 | ||
| 97 | Cymatiosphaera invaginata | C. invaginata | Head, Martin J | genus questionable, Head et al., b (1989) | ||
| 98 | Apteodinium sp. | Apteodinium sp. | Head, Martin J | sp. 1 | ||
| 99 | Impagidinium velorum | I. velorum | Head, Martin J | |||
| 100 | Cyclopsiella sp. | Cyclopsiella sp. | Head, Martin J | genus questionable, sp. cf. C? trematophora | ||
| 101 | Pentadinium laticinctum | P. laticinctum | Head, Martin J | subsp. A | ||
| 102 | Impagidinium sp. | Impagidinium sp. | Head, Martin J | sp. 3 | ||
| 103 | Impagidinium patulum | I. patulum | Head, Martin J | |||
| 104 | Tuberculodinium vancampoae | T. vancampoae | Head, Martin J | |||
| 105 | Xandarodinium variable | X. variable | Head, Martin J |
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