Pliocene benthic foraminiferal abundances of ODP Hole 105-646B from north Atlantic
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
1996
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| _version_ | 1867168096813318144 |
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| author | Zhang, Jijun Scott, David B |
| author_facet | Zhang, Jijun Scott, David B |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Our benthic foraminiferal data clearly indicate eight layers of deep-water turbidites during the Messinian (MTL 1-8) and one in the early Pliocene (PTL 1) in Ocean Drilling Program Leg 105, Site 646B. These deep-water tuibidite deposits are characterized by highly concentrated agglutinated marsh benthic foraminifera (e.g., Trochammina cf. squamata, Ammotium sp. A, Miliammina fusca), rounded quartz, polished thick-walled benthic foraminifera, wood fragments, plant seeds, plant fruit, and highly concentrated mica and are interbedded with sediments containing deep-water benthic faunas. We suggest these turbidites deposited during sea-level low stands (approx. 80-100 m below sea level), and their ages are tentatively correlated to 6.59, 6.22, 6.01, 5.89, 5.75, 5.7, 5.65, 5.60, and 5.55 Ma, respectively, based on the Messinian oxygen isotope enrichments at Site 552A of Deep Sea Drilling Project Leg 81. The turbidites layers during the late Messinian, coeval with frequent climate changes suggested by six oxygen enrichment excursions of Site 552A, may have been in part linked to the late Messinian evaporite deposits in the Mediterranean Basin. The most profound climate changes at 5.75 and 5.55 Ma may have been related to the Lower and Upper Evaporites in the Mediterranean Basin. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_758101 |
| institution | PANGAEA |
| language | en |
| publishDate | 1996 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Pliocene benthic foraminiferal abundances of ODP Hole 105-646B from north Atlantic Zhang, Jijun Scott, David B 105-646B; Ammobaculites sp.; Ammodiscus sp.; Ammotium sp.; Astrononion echolsi; Astrononion umbilicatulum; Bigenerina sp.; Bolivina cf. alata; Bolivina inflata; Bolivina lowmani; Bolivina pseudoplicata; Bolivina pseudopunctata; Bolivina pseudothalmanni; Bolivina pygmaea; Bolivina simplex; Bolivina spp.; Bulimina alazanensis; Bulimina sp.; Bulimina tessellata; Cassidulina laevigata; Cassidulina reniforme; Cassidulina sp.; Cassidulinoides tenuis; Cibicides lobatulus; Cibicidoides bradyi; Cibicidoides spp.; Cornuspirella diffusa; Counting; Cyclammina cancellata; Dendrophrya sp.; Dentalina communis; DEPTH, sediment/rock; Discorbinella bertheloti; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Ehrenbergina trigona; Elphidium sp.; Epistominella exigua; Eponides polius; Eponides sp.; Eponides tumidulus; Eponides weddellensis; Fissurina spp.; Florilus sp.; Foraminifera, benthic; Foraminifera, benthic agglutinated indeterminata; Foraminifera, benthic calcareous; Foraminifera, benthic indeterminata; Fragmentation index, planktic foraminifera; Fursenkoina fusiformis; Gavelinopsis praegeri; Globobulimina auriculata; Globocassidulina subglobosa; Glomospira sp.; Guttulina sp.; Gyroidina soldanii; Haplophragmoides sp.; Hoeglundina elegans; Joides Resolution; Karreriella bradyi; Labrador Sea; Lagenammina sp.; Lagena spp.; Laticarinina pauperata; Leg105; Lenticulina spp.; Martinottiella communis; Melonis barleeanus; Melonis pompilioides; Miliammina fusca; Nodosaria sp.; Nonionella spp.; Nonion spp.; Nuttallides umbonifera; Ocean Drilling Program; ODP; Oolina spp.; Oridorsalis umbonatus; Planulina rugosa; Planulina wuellerstorfi; Pleurostomella spp.; Psammosphaera spp.; Pullenia bulloides; Pullenia quinqueloba; Pyrgo spp.; Quinqueloculina seminulum; Quinqueloculina sp.; Rectuvigerina spp.; Recurvoides sp.; Reophax sp.; Rhizammina spp.; Robertinoides charlottensis; Rosalina sp.; Saccammina sp.; Sample code/label; Sigmoilina tenuis; Sigmoilopsis schlumbergeri; Sigmoilopsis sp.; Siphotextularia sp.; Sphaeroidina bulloides; Spiroplectammina sp.; Stilostomella spp.; Textularia sp.; Tosaia hanzawai; Trifarina angulosa; Trochammina sp.; Trochammina squamata; Uvigerina peregrina; Uvigerina proboscidea; Uvigerina sp.; Valvulineria laevigata; Vulvulina spinosa Our benthic foraminiferal data clearly indicate eight layers of deep-water turbidites during the Messinian (MTL 1-8) and one in the early Pliocene (PTL 1) in Ocean Drilling Program Leg 105, Site 646B. These deep-water tuibidite deposits are characterized by highly concentrated agglutinated marsh benthic foraminifera (e.g., Trochammina cf. squamata, Ammotium sp. A, Miliammina fusca), rounded quartz, polished thick-walled benthic foraminifera, wood fragments, plant seeds, plant fruit, and highly concentrated mica and are interbedded with sediments containing deep-water benthic faunas. We suggest these turbidites deposited during sea-level low stands (approx. 80-100 m below sea level), and their ages are tentatively correlated to 6.59, 6.22, 6.01, 5.89, 5.75, 5.7, 5.65, 5.60, and 5.55 Ma, respectively, based on the Messinian oxygen isotope enrichments at Site 552A of Deep Sea Drilling Project Leg 81. The turbidites layers during the late Messinian, coeval with frequent climate changes suggested by six oxygen enrichment excursions of Site 552A, may have been in part linked to the late Messinian evaporite deposits in the Mediterranean Basin. The most profound climate changes at 5.75 and 5.55 Ma may have been related to the Lower and Upper Evaporites in the Mediterranean Basin. |
| title | Pliocene benthic foraminiferal abundances of ODP Hole 105-646B from north Atlantic |
| topic | 105-646B; Ammobaculites sp.; Ammodiscus sp.; Ammotium sp.; Astrononion echolsi; Astrononion umbilicatulum; Bigenerina sp.; Bolivina cf. alata; Bolivina inflata; Bolivina lowmani; Bolivina pseudoplicata; Bolivina pseudopunctata; Bolivina pseudothalmanni; Bolivina pygmaea; Bolivina simplex; Bolivina spp.; Bulimina alazanensis; Bulimina sp.; Bulimina tessellata; Cassidulina laevigata; Cassidulina reniforme; Cassidulina sp.; Cassidulinoides tenuis; Cibicides lobatulus; Cibicidoides bradyi; Cibicidoides spp.; Cornuspirella diffusa; Counting; Cyclammina cancellata; Dendrophrya sp.; Dentalina communis; DEPTH, sediment/rock; Discorbinella bertheloti; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Ehrenbergina trigona; Elphidium sp.; Epistominella exigua; Eponides polius; Eponides sp.; Eponides tumidulus; Eponides weddellensis; Fissurina spp.; Florilus sp.; Foraminifera, benthic; Foraminifera, benthic agglutinated indeterminata; Foraminifera, benthic calcareous; Foraminifera, benthic indeterminata; Fragmentation index, planktic foraminifera; Fursenkoina fusiformis; Gavelinopsis praegeri; Globobulimina auriculata; Globocassidulina subglobosa; Glomospira sp.; Guttulina sp.; Gyroidina soldanii; Haplophragmoides sp.; Hoeglundina elegans; Joides Resolution; Karreriella bradyi; Labrador Sea; Lagenammina sp.; Lagena spp.; Laticarinina pauperata; Leg105; Lenticulina spp.; Martinottiella communis; Melonis barleeanus; Melonis pompilioides; Miliammina fusca; Nodosaria sp.; Nonionella spp.; Nonion spp.; Nuttallides umbonifera; Ocean Drilling Program; ODP; Oolina spp.; Oridorsalis umbonatus; Planulina rugosa; Planulina wuellerstorfi; Pleurostomella spp.; Psammosphaera spp.; Pullenia bulloides; Pullenia quinqueloba; Pyrgo spp.; Quinqueloculina seminulum; Quinqueloculina sp.; Rectuvigerina spp.; Recurvoides sp.; Reophax sp.; Rhizammina spp.; Robertinoides charlottensis; Rosalina sp.; Saccammina sp.; Sample code/label; Sigmoilina tenuis; Sigmoilopsis schlumbergeri; Sigmoilopsis sp.; Siphotextularia sp.; Sphaeroidina bulloides; Spiroplectammina sp.; Stilostomella spp.; Textularia sp.; Tosaia hanzawai; Trifarina angulosa; Trochammina sp.; Trochammina squamata; Uvigerina peregrina; Uvigerina proboscidea; Uvigerina sp.; Valvulineria laevigata; Vulvulina spinosa |
| url | https://doi.org/10.1594/PANGAEA.758101 |