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  • 1985-1989  (7)
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  • 1
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    Magnetostratigraphy and biostratigraphy of ODP Leg 105 sites and DSDP Hole 12-112 (1989)
    PANGAEA
    In:  Supplement to: Baldauf, Jack G; Clement, Bradford M; Aksu, Ali E; de Vernal, Anne; Firth, John V; Hall, Frank R; Head, Martin J; Jarrard, Richard D; Kaminski, Michael Anthony; Lazarus, David B; Monjanel, Anne-Lise; Berggren, William A; Gradstein, Felix M; Knüttel, Stephen; Mudie, Peta J; Russell, Merlin D Jr (1989): Magnetostratigraphic and biostratigraphic synthesis of Ocean Drilling Program Leg 105: Labrador Sea and 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, 935-956, https://doi.org/10.2973/odp.proc.sr.105.165.1989
    Details
    Publication Date: 2024-01-09
    Description: During Ocean Drilling Program (ODP) Leg 105, three sites (Sites 645 through 647) were drilled in Baffin Bay and the Labrador Sea to examine the tectonic evolution and the climatic and oceanic histories of this region. Biostratigraphic and magnetostratigraphic results vary at each site, while stratigraphic resolution depends on the limited abundance of marker species and the completeness of the paleomagnetic record. Because of the paucity of planktonic microfossils and the poor paleomagnetic record signatures, stratigraphic determinations at Site 645 often rely on defining minimum temporal constraints on specific samples or stratigraphic intervals. The completed stratigraphy indicates that the sedimentary sequence recovered at Site 645 is early Miocene to Holocene in age. The magnetostratigraphy and biostratigraphies are better defined at Sites 646 and 647 in the Labrador Sea. Site 646 generally contains a well-developed magnetostratigraphy and calcareous microfossil biostratigraphy. This biostratigraphy is based on calcareous nannofossils and planktonic foraminifers typical of the North Atlantic Ocean. Siliceous microfossils are also present at Site 646, but they are restricted to upper Pliocene through Holocene sediments. The stratigraphic sequence recovered at Site 646 is late Miocene to Holocene in age. Based primarily on the calcareous nannofossil stratigraphy, the sequence recovered at Site 647 consists of lower Eocene to lower Oligocene, lower Miocene, upper Miocene, and upper Pliocene through Holocene sediments. Three hiatuses are present in this sequence: the older hiatus separates lower Oligocene sediments from lower Miocene sediments, another hiatus separates lower Miocene sediments from upper Miocene sediments, and the youngest one separates upper Miocene from upper Pliocene sediments. A magnetostratigraphy is defined for the interval from the Gauss/Matuyama boundary through the Brunhes (Clement et al., this volume). Both planktonic foraminifers and siliceous microfossils have restricted occurrences. Planktonic foraminifers occur in Pliocene and younger sediments, and siliceous microfossils are present in lower Miocene and lower Oligocene sediments. The near-continuous Eocene through lower Oligocene sequence recovered at Site 647 allows the calcareous nannofossils and diatom stratigraphies at this site to act as a Paleogene stratigraphic framework. This framework can be compared with the stratigraphy previously completed for DSDP Site 112.
    Keywords: 105-646; 105-647; 12-112; COMPCORE; Composite Core; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Joides Resolution; Labrador Sea; Leg105; Leg12; North Atlantic; Ocean Drilling Program; ODP; South Atlantic Ocean
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Stratigraphic occurrence of selected marine palynomorph species recorder in the Paleogene of ODP Hole 105-647A (Table 3) (1989)
    PANGAEA
    In:  Supplement to: Head, Martin J; Norris, Geoffrey (1989): Palynology and dinocyst stratigraphy of the Eocene and Oligocene in ODP Leg 105, Hole 667A, Labrador Sea. 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, 515-550, https://doi.org/10.2973/odp.proc.sr.105.178.1989
    Details
    Publication Date: 2024-01-09
    Description: Dinoflagellate cysts were recovered throughout the Paleogene succession of Hole 647A, which contains an almost complete deep-water record of early Eocene through early late Oligocene sedimentation in the Labrador Sea. Dinoflagellate cyst biostratigraphy is in general accord with that provided by other microfossil groups and is consistent with a lower Eocene age, as determined by nannofossils, for basal sediments in Hole 647A. These sediments overlie oceanic crust of Chron 24 age. Dinocyst assemblages indicate outer neritic to oceanic conditions throughout, although the persistent occurrence of Wetzeliellaceae specimens in the lower Eocene suggests a greater influence from shelf environments during this time. Lower Eocene dinocyst assemblages are similar to coeval assemblages from the Rockall Plateau, but those from the middle to upper Eocene have mixed affinities and may be related to the intensification of the proto-Gulf Stream from middle Eocene time. Oligocene dinocyst assemblages suggest the influence of both arctic and North Atlantic wate rmasses at this site. The presence of protoperidineacean species in the upper Eocene and Oligocene may indicate increased availability of nutrients, perhaps related to increased upwelling or the effects of water-mass mixing. Productive samples are dominated by dinocysts and acritarchs, while sporomorphs are represented mainly by bisaccate pollen. Preservational differences within samples may reflect mixing of penecontemporaneous dinocyst populations during the Eocene, and all samples examined may have a considerable allochthonous component. Variability in relative abundance of many species during the Eocene may be related to fluctuating water-mass properties. A total 175 dinocyst and acritarch taxa were recorded from 53 productive samples from the Paleogene. Only one Paleogene sample was barren of palynomorphs. Of three Miocene samples processed, all were barren.
    Keywords: 105-647A; Acritarch sp.; Adnatosphaeridium multispinosum; Adnatosphaeridium robustum; Age model, paleomag, Berggren et al (1985); Aliscocysta sp.; Alisocysta sp.; Apectodinium sp.; Areoligera senonensis; Areosphaeridium arcuatum; Areosphaeridium diktyoplokus; Areosphaeridium pectiniforme; Batiacasphaera compta; Batiacasphaera micropapillata; Batiacasphaera sp.; Ceratiopsis depressa; Ceratiopsis sp.; Chiropteridium lobospinosum; Chiropteridium mespilanum; Chytroeisphaeridia sp.; Cordosphaeridium callosum; Cordosphaeridium cantharellum; Cordosphaeridium funiculatum; Cordosphaeridium gracilis; Cordosphaeridium inodes; Cordosphaeridium minimum; Cordosphaeridium sp.; Corrudinium incompositum; Corrudinium sp.; Cribroperidinium giuseppei; Cribroperidinium tenuitabulatum; Dapsilidinium pseudocolligerum; Dapsilidinium simplex; Dapsilidinium sp.; Deflandrea heterophlycta; Deflandrea leptodermata; Deflandrea oebisfeldensis; Deflandrea sp.; Deflandrea spinulosa; Dinoflagellate cyst; Dinopterygium cladoides; Diphyes colligerum; Diphyes sp.; Distatodinium paradoxum; Distatodinium scariosum; Distatodinium sp.; Dracodinium condylos; Dracodinium sp.; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Duosphaeridium sp.; Eatonicysta ursulae; Elytrocysta sp.; Epoch; Gelatia inflata; Glaphyrocysta semitecta; Glaphyrocysta sp.; Gochtodinium spinulum; Gonyaulacysta sp.; Hemiplacophora semilunifera; Heteraulacacysta porosa; Heteraulacacysta sp.; Histiocysta spp.; Homotryblium pallidium; Homotryblium sp.; Homotryblium tenuispinosum; Horologinella spinosa; Hystrichokolpoma cinctum; Hystrichokolpoma globulum; Hystrichokolpoma granulatum; Hystrichokolpoma rigaudiae; Hystrichokolpoma unispina; Hystrichosphaeropsis sp.; Hystrichostrogylon membraniphorum; Impagidinium aculeatum; Impagidinium dispertitum; Impagidinium pallidum; Impagidinium paradoxum; Impagidinium patulum; Impagidinium sp.; Impagidinium spp.; Impagidinium velorum; Impletosphaeridium luxurium; Invertocysta sp.; Joides Resolution; Kisselovia coleothrypta; Kisselovia crassoramosa; Kisselovia edwardsii; Leg105; Lentinia serrata; Lingulodinium machaerophorum; Lithosphaeridium sp.; Lophocysta sp.; Membranophoridium aspinatum; Membranophoridium sp.; Nannofossil zone; Nematosphaeropsis lemniscata; Nematosphaeropsis sp.; Ocean Drilling Program; ODP; Operculodinium centrocarpum; Operculodinium sp.; Operculodinium spp.; Palaeocystodinium golzowense; Pentadinium laticinctum imaginatum; Pentadinium spp.; Phelodinium sp.; Phthanoperidinium brooksii; Phthanoperidinium comatum; Phthanoperidinium echinatum; Phthanoperidinium geminatum; Phthanoperidinium sp.; Phthanoperidinium spp.; Polysphaeridium sp.; Reticulatosphaera actinocoronata; Rhizophagites sp.; Rhombodinium glabrum; Rhombodinium sp.; Samlandia chlamydophora; Sample code/label; Selenopemphix armata; Selenopemphix nephroides; Selenopemphix sp.; Selenopenphyx sp.; South Atlantic Ocean; Spiniferites pseudofurcatus; Spiniferites spp.; Surculosphaeridium sp.; Svalbardella sp.; Systematophora ancyrea; Systematophora sp.; Tectatodinium pellitum; Tectatodinium sp.; Thalassiphora delicata; Thalassiphora fenestrata; Thalassiphora pelagica; Thalassiphora sp.; Wetzeliella articulata; Wetzeliella symmetrica; Wilsonidium tabulatum
    Type: Dataset
    Format: text/tab-separated-values, 9604 data points
    Location Call Number Limitation Availability
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  • 3
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    Stratigraphic distribution of marine palynomorph species recorded for the Miocene and lowermost Pliocene of ODP Hole 105-646B (Table 1) (1989)
    PANGAEA
    In:  Supplement to: Head, Martin J; Norris, Geoffrey; Mudie, Peta J (1989): Palynology and dinocyst stratigraphy of the upper Miocene and lowermost Pliocene, ODP Leg 105, Site 646, Labrador Sea. 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, 423-451, https://doi.org/10.2973/odp.proc.sr.105.135.1989
    Details
    Publication Date: 2024-01-09
    Description: A total of 58 productive samples have been palynologically analyzed from the upper Miocene and lowermost Pliocene of Ocean Drilling Program (ODP) Hole 646B in the central Labrador Sea. Pollen and spores are a major component of the assemblages and indicate a temperate-source vegetation, although they mainly comprise forms that are longranging in high latitudes. Reworking may account for some of these forms. A diverse marine palyno flora (70 taxa) was recovered, and five provisional dinocyst assemblage zones are erected. Palynomorph assemblages are thought to be largely allochthonous and may reflect changing bottom-water paleocurrents. The dinocyst flora consists of both oceanic and neritic species and indicates temperate surface-water conditions. Similarities exist with other dinocyst assemblages recorded from the northern North Atlantic and Norwegian Sea, although there are some important differences, including a diverse protoperidiniacean component at this site.
    Keywords: 105-646B; Achomosphaera andalousiensis; Acritarch sp.; Age model, paleomag, Berggren et al (1985); Batiacasphaera/Cerebrocysta group; Brigantedinium spp.; Capillicysta gloriana; Cerebrocysta namocensis; Corrudinium? labradori; Cristadinium cristatoserratum; Cristadinium diminutivum; Dapsilidinium pastielsii; Dapsilidinium pseudocolligerum; Deflandrea sp.; Dinoflagellate cyst; Dinoflagellate cyst indeterminata; Dinoflagellate sp.; Dinoflagellate zone; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Emslandia sp.; Epoch; Filisphaera sp.; Gongylodinium serratum; Gongylodinium sp.; Habibacysta tectata; Hystrichokolpoma rigaudiae; Impagidinium aculeatum; Impagidinium fenestroseptatum; Impagidinium pallidum; Impagidinium paradoxum; Impagidinium patulum; Impagidinium sp.; Incertae sedis sp.; Invertocysta lacrymosa; Invertocysta spp.; Joides Resolution; Labrador Sea; Labyrinthodinium truncatum; Leg105; Lejeunecysta sp.; Lejeunecysta spp.; Lingulodinium machaerophorum; Melitasphaeridium choanophorum; Muraticysta microornata; Nannofossil zone; Nematosphaeropsis labyrinthus; Nematosphaeropsis lemniscata; Nematosphaeropsis major; Nematosphaeropsis sp.; Ocean Drilling Program; ODP; Operculodinium? eirikianum; Operculodinium centrocarpum; Operculodinium janduchenei; Operculodinium sp.; Paralecaniella indentata; Pentadinium laticinctum laticinctum; Polysphaeridium sp.; Pyxidiella sp.; Reticulatosphaera actinocoronata; Rhizophagites sp.; Sample code/label; Sample comment; Selenopemphix dionaeacysta; Selenopemphix nephroides; Selenopemphix sp.; Selenopenphyx indentata; Selenopenphyx sp.; Spiniferites/Achomosphaera Group; Spiniferites sp.; Surculosphaeridium sp.; Tectatodinium pellitum; Tuberculodinium vancampoae; Xandarodinium sp.; Xandarodinium xanthum
    Type: Dataset
    Format: text/tab-separated-values, 2400 data points
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  • 4
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    Stratigraphic distribution of marine palynomorph species recorded for the Miocene of ODP Hole 105-645E (Table 1) (1989)
    PANGAEA
    In:  Supplement to: Head, Martin J; Norris, Geoffrey; Mudie, Peta J (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
    Details
    Publication Date: 2024-01-09
    Description: 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.
    Keywords: 105-645E; Acritarch sp.; Age model, paleomag, Berggren et al (1985); Apteodinium sp.; Apteodinium spiridoides; Baffin Bay; Batiacasphaera gemmata; Batiacasphaera micropapillata; Batiacasphaera sp.; Batiacasphaera sphaerica; Brigantedinium spp.; Cannosphaeropsis sp.; Cerebrocysta sp.; Cordosphaeridium cantharellum; Cordosphaeridium minimum; Cribroperidinium tenuitabulatum; Cristadinium cristatoserratum; Cristadinium sp.; Cyclopsiella sp.; Cyclopsiella spiculosa; Cymatiosphaera baffinensis; Cymatiosphaera invaginata; Cymatiosphaera sp.; Dapsilidinium pseudocolligerum; Dinoflagellate cyst indeterminata; Dinoflagellate zone; Dinopterygium cladoides; Distatodinium paradoxum; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Epoch; Evittosphaerula paratabulata; Foraminifera, linings; Habibacysta tectata; Heteraulacacysta sp.; Hystrichokolpoma rigaudiae; Hystrichosphaeropsis sp.; Impagidinium aquaeductum; Impagidinium maculatum; Impagidinium pallidum; Impagidinium patulum; Impagidinium sp.; Impagidinium spp.; Impagidinium velorum; Impletosphaeridium prolatum; Impletosphaeridium sp.; Invertocysta tabulata; Joides Resolution; Labyrinthodinium sp.; Labyrinthodinium truncatum; Leg105; Leiosphaeridia sp.; Lejeunecysta spp.; Lingulodinium machaerophorum; Lophocysta sp.; Melitasphaeridium choanophorum; Nematosphaeropsis downiei; Nematosphaeropsis labyrinthus; Nematosphaeropsis lemniscata; Nematosphaeropsis sp.; Ocean Drilling Program; ODP; Operculodinium centrocarpum; Operculodinium israelianum; Operculodinium sp.; Palaeocystodinium cf. golzowense; Palaeocystodinium golzowense; Paralecaniella indentata; Pentadinium laticinctum; Pentadinium laticinctum laticinctum; Pentadinium sp.; Pyxidiella-Pyxidiniopsis group; Pyxidinopsis sp.; Reticulatosphaera actinocoronata; Sample code/label; Scolecodonta; Selenopemphix brevispinosa; Selenopemphix nephroides; Selenopemphix sp.; Spiniferites pseudofurcatus; Spiniferites sp.; Spiniferites spp.; Sumatradinium sp.; Systematophora ancyrea; Tectatodinium sp.; Thalassiphora sp.; Trinovantedinium sp.; Tuberculodinium vancampoae; Xandarodinium sp.; Xandarodinium variable
    Type: Dataset
    Format: text/tab-separated-values, 4725 data points
    Location Call Number Limitation Availability
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  • 5
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    (Table 3) Biostratigraphy and paleomagnetic events from ODP Site 105-647 (1989)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 105-647; Ageprofile Datum Description; COMPCORE; Composite Core; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DSDP/ODP/IODP sample designation; Joides Resolution; Leg105; Ocean Drilling Program; ODP; Sample code/label; Sample code/label 2; South Atlantic Ocean
    Type: Dataset
    Format: text/tab-separated-values, 181 data points
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    DATA PANGAEA
  • 6
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    (Table 1) Stratigraphic distribution of new marine palynomorph species recorded for the Miocene and lowermost Pliocene of ODP Hole 105-646B (1989)
    PANGAEA
    In:  Supplement to: Head, Martin J; Norris, Geoffrey; Mudie, Peta J (1989): New species of dinocysts and a new species of acritarch from the upper Miocene and lowermost Pliocene, ODP Leg 105, Site 464, Labrador Sea. 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, 453-466, https://doi.org/10.2973/odp.proc.sr.105.136.1989
    Details
    Publication Date: 2024-01-09
    Description: Three new dinocyst genera, 14 new dinocyst species, and one new acritarch species are described from the upper Miocene to lowermost Pliocene Site 646 in the Labrador Sea. The new genera described are Habibacysta, Cristadinium, and Muraticysta. The new dinocyst species described are Capillicysta gloriana, Cerebrocysta? namocensis, Corrudinium? labradori, Cristadinium cristatoserratum, Cristadinium diminutivum, Gongylodinium serratum, Habibacysta tectata, Impagidinium fenestroseptatum, Muraticysta microornata, Nematosphaeropsis major, Operculodinium? eirikianum, Operculodinium janduchenei, Selenopemphix dionaeacysta, and Selenopemphix? indentata. A new acritarch species, Cymatiosphaera? invaginata is also described.
    Keywords: 105-646B; Age model, paleomag, Berggren et al (1985); Capillicysta gloriana; Cerebrocysta namocensis; Corrudinium? labradori; Cristadinium cristatoserratum; Cristadinium diminutivum; Cymatiosphaera invaginata; Dinoflagellate zone; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Epoch; Filisphaera sp.; Gongylodinium serratum; Gongylodinium sp.; Habibacysta tectata; Impagidinium fenestroseptatum; Joides Resolution; Labrador Sea; Leg105; Muraticysta microornata; Nannofossil zone; Nematosphaeropsis major; Ocean Drilling Program; ODP; Operculodinium? eirikianum; Operculodinium janduchenei; Sample code/label; Sample comment; Selenopenphyx dioneaecysta; Selenopenphyx indentata
    Type: Dataset
    Format: text/tab-separated-values, 704 data points
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  • 7
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    (Table 2) Biostratigraphy and paleomagnetic events from ODP Site 105-646 (1989)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Keywords: 105-646; Ageprofile Datum Description; COMPCORE; Composite Core; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DSDP/ODP/IODP sample designation; Joides Resolution; Labrador Sea; Leg105; Ocean Drilling Program; ODP; Sample code/label; Sample code/label 2
    Type: Dataset
    Format: text/tab-separated-values, 208 data points
    Location Call Number Limitation Availability
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