Distribution of calcareous nannofossils in the Miocene interval of DSDP Hole 94-608 in the north Atlantic (Fig. 1)
DSDP North Atlantic Site 608 yielded an excellent Miocene pelagic section which affords a further opportunity for elucidating the chronology of the calcareous nannofossil succession in the framework of magnetostratigraphic control. Most of the conventional (zonal) markers have been documented for th...
Main Author: | |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
1992
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.687629 https://doi.org/10.1594/PANGAEA.687629 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.687629 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
94-608 Amaurolithus delicatus Amaurolithus ninae Amaurolithus primus Calcidiscus leptoporus Calcidiscus macintyrei Calcidiscus premacintyrei Calcidiscus tropicus Catinaster calyculus Catinaster sp. Coccolithus miopelagicus Coccolithus pelagicus Coccolithus pliopelagicus Coccolithus streckeri Coronocyclus nitescens Cribrocentrum latipons Cryptococcolithus takayamae Cyclicargolithus floridanus Cyclolithella cricota Cyclolithella protoannula Cyclolithella rotula Deep Sea Drilling Project Dictyococcites abisectus Dictyococcites bisectus Discoaster asymmetricus Discoaster bellus Discoaster berggrenii Discoaster bollii Discoaster braarudii Discoaster brouweri Discoaster calculosus Discoaster deflandrei Discoaster druggii Discoaster exilis Discoaster hamatus Discoaster kugleri Discoaster loeblichii Discoaster neohamatus Discoaster neorectus Discoaster obtusus Discoaster pentaradiatus Discoaster prepentaradiatus Discoaster quinqueramus Discoaster surculus Discoaster variabilis Discolithina sp. DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation |
spellingShingle |
94-608 Amaurolithus delicatus Amaurolithus ninae Amaurolithus primus Calcidiscus leptoporus Calcidiscus macintyrei Calcidiscus premacintyrei Calcidiscus tropicus Catinaster calyculus Catinaster sp. Coccolithus miopelagicus Coccolithus pelagicus Coccolithus pliopelagicus Coccolithus streckeri Coronocyclus nitescens Cribrocentrum latipons Cryptococcolithus takayamae Cyclicargolithus floridanus Cyclolithella cricota Cyclolithella protoannula Cyclolithella rotula Deep Sea Drilling Project Dictyococcites abisectus Dictyococcites bisectus Discoaster asymmetricus Discoaster bellus Discoaster berggrenii Discoaster bollii Discoaster braarudii Discoaster brouweri Discoaster calculosus Discoaster deflandrei Discoaster druggii Discoaster exilis Discoaster hamatus Discoaster kugleri Discoaster loeblichii Discoaster neohamatus Discoaster neorectus Discoaster obtusus Discoaster pentaradiatus Discoaster prepentaradiatus Discoaster quinqueramus Discoaster surculus Discoaster variabilis Discolithina sp. DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Gartner, Stefan Distribution of calcareous nannofossils in the Miocene interval of DSDP Hole 94-608 in the north Atlantic (Fig. 1) |
topic_facet |
94-608 Amaurolithus delicatus Amaurolithus ninae Amaurolithus primus Calcidiscus leptoporus Calcidiscus macintyrei Calcidiscus premacintyrei Calcidiscus tropicus Catinaster calyculus Catinaster sp. Coccolithus miopelagicus Coccolithus pelagicus Coccolithus pliopelagicus Coccolithus streckeri Coronocyclus nitescens Cribrocentrum latipons Cryptococcolithus takayamae Cyclicargolithus floridanus Cyclolithella cricota Cyclolithella protoannula Cyclolithella rotula Deep Sea Drilling Project Dictyococcites abisectus Dictyococcites bisectus Discoaster asymmetricus Discoaster bellus Discoaster berggrenii Discoaster bollii Discoaster braarudii Discoaster brouweri Discoaster calculosus Discoaster deflandrei Discoaster druggii Discoaster exilis Discoaster hamatus Discoaster kugleri Discoaster loeblichii Discoaster neohamatus Discoaster neorectus Discoaster obtusus Discoaster pentaradiatus Discoaster prepentaradiatus Discoaster quinqueramus Discoaster surculus Discoaster variabilis Discolithina sp. DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation |
description |
DSDP North Atlantic Site 608 yielded an excellent Miocene pelagic section which affords a further opportunity for elucidating the chronology of the calcareous nannofossil succession in the framework of magnetostratigraphic control. Most of the conventional (zonal) markers have been documented for this site and some of the earlier results are confirmed and refined. In addition several unconventional and less known markers have been added. The first two are the highest (last) occurrence of Sphenolithus delphix and Sphenolithus capricornutus at 23.6 Ma, which is immediately above the Oligocene-Miocene boundary as identified by the last occurrence of Reticulofenestra bisecta at 23.7 Ma. The next unconventional datum is the highest (last) occurrence of Ilselithina fusa at 22.8 Ma, which is also the highest (last) occurrence of Helicosphaera recta. Calcidiscus tropicus' lowest (first) occurrence is at 19.5 Ma, which is also the lowest occurrence of Sphenolithus belemnos, and Calcidiscus leptoporus' lowest (first) occurrence coincides with that of Sphenolithus heteromorphus at 18.5 Ma. Sphenolithus dissimilis' highest (last) occurrence is at 18.2 Ma and the Calcidiscus premacintyrei lowest (first) and highest (last) occurrences are, respectively, at 17.7 and 11.7 Ma. Discoaster braarudii occurs from 11.6 to 11.3 Ma and its highest (last) occurrence corresponds to that of Cyclicargolithus floridanus. Minylitha convallis occurs from 9.0 to 6.9 Ma. Within the range of Minylitha, at 8.0 Ma, a major shift occurs in reticulofenestrid placoliths from dominantly large (Reticulofenestra pseudoumbilicus) and medium size (Reticulofenestra minutula) species below to significant numbers of very small species (Dictyococcites productus and Gephyrocapsa) above. This is interpreted to be a major, though perhaps seasonal, change of productivity of the North Atlantic at Site 608. A new genus and species Cryptococcolithus takayamae, is described and a variety, Reticulofenestra pseudoumbilicus var. amplus is identified. |
format |
Dataset |
author |
Gartner, Stefan |
author_facet |
Gartner, Stefan |
author_sort |
Gartner, Stefan |
title |
Distribution of calcareous nannofossils in the Miocene interval of DSDP Hole 94-608 in the north Atlantic (Fig. 1) |
title_short |
Distribution of calcareous nannofossils in the Miocene interval of DSDP Hole 94-608 in the north Atlantic (Fig. 1) |
title_full |
Distribution of calcareous nannofossils in the Miocene interval of DSDP Hole 94-608 in the north Atlantic (Fig. 1) |
title_fullStr |
Distribution of calcareous nannofossils in the Miocene interval of DSDP Hole 94-608 in the north Atlantic (Fig. 1) |
title_full_unstemmed |
Distribution of calcareous nannofossils in the Miocene interval of DSDP Hole 94-608 in the north Atlantic (Fig. 1) |
title_sort |
distribution of calcareous nannofossils in the miocene interval of dsdp hole 94-608 in the north atlantic (fig. 1) |
publisher |
PANGAEA |
publishDate |
1992 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.687629 https://doi.org/10.1594/PANGAEA.687629 |
op_coverage |
LATITUDE: 42.836700 * LONGITUDE: -23.087500 * DATE/TIME START: 1983-07-13T00:00:00 * DATE/TIME END: 1983-07-13T00:00:00 * MINIMUM ORDINAL NUMBER: 1 * MAXIMUM ORDINAL NUMBER: 217 |
long_lat |
ENVELOPE(-60.515,-60.515,-62.932,-62.932) ENVELOPE(-23.087500,-23.087500,42.836700,42.836700) |
geographic |
Recta |
geographic_facet |
Recta |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Gartner, Stefan (1992): Miocene nannofossil chronology in the North Atlantic, DSDP Site 608. Marine Micropaleontology, 18(4), 307-331, https://doi.org/10.1016/0377-8398(92)90045-L |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.687629 https://doi.org/10.1594/PANGAEA.687629 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.687629 https://doi.org/10.1016/0377-8398(92)90045-L |
_version_ |
1766129420321423360 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.687629 2023-05-15T17:31:43+02:00 Distribution of calcareous nannofossils in the Miocene interval of DSDP Hole 94-608 in the north Atlantic (Fig. 1) Gartner, Stefan LATITUDE: 42.836700 * LONGITUDE: -23.087500 * DATE/TIME START: 1983-07-13T00:00:00 * DATE/TIME END: 1983-07-13T00:00:00 * MINIMUM ORDINAL NUMBER: 1 * MAXIMUM ORDINAL NUMBER: 217 1992-03-18 text/tab-separated-values, 17143 data points https://doi.pangaea.de/10.1594/PANGAEA.687629 https://doi.org/10.1594/PANGAEA.687629 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.687629 https://doi.org/10.1594/PANGAEA.687629 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Gartner, Stefan (1992): Miocene nannofossil chronology in the North Atlantic, DSDP Site 608. Marine Micropaleontology, 18(4), 307-331, https://doi.org/10.1016/0377-8398(92)90045-L 94-608 Amaurolithus delicatus Amaurolithus ninae Amaurolithus primus Calcidiscus leptoporus Calcidiscus macintyrei Calcidiscus premacintyrei Calcidiscus tropicus Catinaster calyculus Catinaster sp. Coccolithus miopelagicus Coccolithus pelagicus Coccolithus pliopelagicus Coccolithus streckeri Coronocyclus nitescens Cribrocentrum latipons Cryptococcolithus takayamae Cyclicargolithus floridanus Cyclolithella cricota Cyclolithella protoannula Cyclolithella rotula Deep Sea Drilling Project Dictyococcites abisectus Dictyococcites bisectus Discoaster asymmetricus Discoaster bellus Discoaster berggrenii Discoaster bollii Discoaster braarudii Discoaster brouweri Discoaster calculosus Discoaster deflandrei Discoaster druggii Discoaster exilis Discoaster hamatus Discoaster kugleri Discoaster loeblichii Discoaster neohamatus Discoaster neorectus Discoaster obtusus Discoaster pentaradiatus Discoaster prepentaradiatus Discoaster quinqueramus Discoaster surculus Discoaster variabilis Discolithina sp. DRILL Drilling/drill rig DSDP DSDP/ODP/IODP sample designation Dataset 1992 ftpangaea https://doi.org/10.1594/PANGAEA.687629 https://doi.org/10.1016/0377-8398(92)90045-L 2023-01-20T08:45:05Z DSDP North Atlantic Site 608 yielded an excellent Miocene pelagic section which affords a further opportunity for elucidating the chronology of the calcareous nannofossil succession in the framework of magnetostratigraphic control. Most of the conventional (zonal) markers have been documented for this site and some of the earlier results are confirmed and refined. In addition several unconventional and less known markers have been added. The first two are the highest (last) occurrence of Sphenolithus delphix and Sphenolithus capricornutus at 23.6 Ma, which is immediately above the Oligocene-Miocene boundary as identified by the last occurrence of Reticulofenestra bisecta at 23.7 Ma. The next unconventional datum is the highest (last) occurrence of Ilselithina fusa at 22.8 Ma, which is also the highest (last) occurrence of Helicosphaera recta. Calcidiscus tropicus' lowest (first) occurrence is at 19.5 Ma, which is also the lowest occurrence of Sphenolithus belemnos, and Calcidiscus leptoporus' lowest (first) occurrence coincides with that of Sphenolithus heteromorphus at 18.5 Ma. Sphenolithus dissimilis' highest (last) occurrence is at 18.2 Ma and the Calcidiscus premacintyrei lowest (first) and highest (last) occurrences are, respectively, at 17.7 and 11.7 Ma. Discoaster braarudii occurs from 11.6 to 11.3 Ma and its highest (last) occurrence corresponds to that of Cyclicargolithus floridanus. Minylitha convallis occurs from 9.0 to 6.9 Ma. Within the range of Minylitha, at 8.0 Ma, a major shift occurs in reticulofenestrid placoliths from dominantly large (Reticulofenestra pseudoumbilicus) and medium size (Reticulofenestra minutula) species below to significant numbers of very small species (Dictyococcites productus and Gephyrocapsa) above. This is interpreted to be a major, though perhaps seasonal, change of productivity of the North Atlantic at Site 608. A new genus and species Cryptococcolithus takayamae, is described and a variety, Reticulofenestra pseudoumbilicus var. amplus is identified. Dataset North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science Recta ENVELOPE(-60.515,-60.515,-62.932,-62.932) ENVELOPE(-23.087500,-23.087500,42.836700,42.836700) |