Stratigraphic occurrence of selected marine palynomorph species recorder in the Paleogene of ODP Hole 105-647A (Table 3)
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
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PANGAEA
1989
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| _version_ | 1867168093027958784 |
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| author | Head, Martin J Norris, Geoffrey |
| author_facet | Head, Martin J Norris, Geoffrey |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_745253 |
| institution | PANGAEA |
| language | en |
| publishDate | 1989 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Stratigraphic occurrence of selected marine palynomorph species recorder in the Paleogene of ODP Hole 105-647A (Table 3) Head, Martin J Norris, Geoffrey 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.; North Atlantic Ocean; 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.; 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 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. |
| title | Stratigraphic occurrence of selected marine palynomorph species recorder in the Paleogene of ODP Hole 105-647A (Table 3) |
| topic | 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.; North Atlantic Ocean; 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.; 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 |
| url | https://doi.org/10.1594/PANGAEA.745253 |