Pliocene-Pleistocene calcareous nannofossils from the Iberian Abyssal Plain
During Ocean Drilling Program Leg 149, five sites were drilled on the Iberia Abyssal Plain, west of the Iberian Peninsula. Five holes (Holes 897A, 897C, 898A, 899A, and 900A) yielded Pliocene-Pleistocene sediments, which consist mainly of turbidites. Among these, Holes 897C and 898A yielded signific...
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1996
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.761565 2024-09-15T18:24:08+00:00 Pliocene-Pleistocene calcareous nannofossils from the Iberian Abyssal Plain Liu, Li Maiorano, Patrizia Zhao, Xixi MEDIAN LATITUDE: 40.752887 * MEDIAN LONGITUDE: -12.143012 * SOUTH-BOUND LATITUDE: 40.683200 * WEST-BOUND LONGITUDE: -12.474000 * NORTH-BOUND LATITUDE: 40.838800 * EAST-BOUND LONGITUDE: -11.604200 * DATE/TIME START: 1993-03-31T02:15:00 * DATE/TIME END: 1993-05-22T15:00:00 1996 application/zip, 8 datasets https://doi.pangaea.de/10.1594/PANGAEA.761565 https://doi.org/10.1594/PANGAEA.761565 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.761565 https://doi.org/10.1594/PANGAEA.761565 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Liu, Li; Maiorano, Patrizia; Zhao, Xixi (1996): Pliocene-Pleistocene calcareous nannofossils from the Iberian Abyssal Plain. In: Whitmarsh, RB; Sawyer, DS; Klaus, A & Masson, DG (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 149, 147-164, https://doi.org/10.2973/odp.proc.sr.149.209.1996 149-897A 149-897C 149-898A 149-899A 149-900A DRILL Drilling/drill rig Joides Resolution Leg149 North Atlantic Ocean Ocean Drilling Program ODP dataset publication series 1996 ftpangaea https://doi.org/10.1594/PANGAEA.76156510.2973/odp.proc.sr.149.209.1996 2024-08-21T00:02:25Z During Ocean Drilling Program Leg 149, five sites were drilled on the Iberia Abyssal Plain, west of the Iberian Peninsula. Five holes (Holes 897A, 897C, 898A, 899A, and 900A) yielded Pliocene-Pleistocene sediments, which consist mainly of turbidites. Among these, Holes 897C and 898A yielded significant Pliocene-Pleistocene sediments that provided a high-resolution nannofossil biostratigraphy essential for locating paleomagnetic polarity events and for interpreting the age and frequency of turbidite sedimentation in the Iberia Abyssal Plain. Pliocene-Pleistocene nannofossils recovered during Leg 149 are generally abundant and well to moderately preserved. Although reworking is evident in most samples, the Pliocene-Pleistocene nannofossils proved quite reliable for dating the sediments. Most Pleistocene zonal boundaries proposed by S. Gartner in 1977 and the Pliocene standard zonal boundaries proposed by E. Martini in 1971 were easily recognized. In addition, several other nannofossil events proposed by D. Rio et al. in 1990 and by T. Sato and T. Takayama in 1992 were recognized and proved valuable for improving the resolution of Pliocene-Pleistocene nannofossil biostratigraphy. The Pliocene-Pleistocene nannofossil biostratigraphic results of Holes 897C and 900A coincide rather well with the discerned paleomagnetic polarity events. As a result, the combination of nannofossil biostratigraphic and paleomagnetic studies provides important information for fulfilling the second objective of this leg: to determine the history of turbidite sedimentation in the Iberia Abyssal Plain. The general trend of sedimentation rates inferred by nannofossil biostratigraphy indicates that sedimentation rates increase from the continental margin to the deep sea along with increasing water depth. Other/Unknown Material North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-12.474000,-11.604200,40.838800,40.683200) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
149-897A 149-897C 149-898A 149-899A 149-900A DRILL Drilling/drill rig Joides Resolution Leg149 North Atlantic Ocean Ocean Drilling Program ODP |
spellingShingle |
149-897A 149-897C 149-898A 149-899A 149-900A DRILL Drilling/drill rig Joides Resolution Leg149 North Atlantic Ocean Ocean Drilling Program ODP Liu, Li Maiorano, Patrizia Zhao, Xixi Pliocene-Pleistocene calcareous nannofossils from the Iberian Abyssal Plain |
topic_facet |
149-897A 149-897C 149-898A 149-899A 149-900A DRILL Drilling/drill rig Joides Resolution Leg149 North Atlantic Ocean Ocean Drilling Program ODP |
description |
During Ocean Drilling Program Leg 149, five sites were drilled on the Iberia Abyssal Plain, west of the Iberian Peninsula. Five holes (Holes 897A, 897C, 898A, 899A, and 900A) yielded Pliocene-Pleistocene sediments, which consist mainly of turbidites. Among these, Holes 897C and 898A yielded significant Pliocene-Pleistocene sediments that provided a high-resolution nannofossil biostratigraphy essential for locating paleomagnetic polarity events and for interpreting the age and frequency of turbidite sedimentation in the Iberia Abyssal Plain. Pliocene-Pleistocene nannofossils recovered during Leg 149 are generally abundant and well to moderately preserved. Although reworking is evident in most samples, the Pliocene-Pleistocene nannofossils proved quite reliable for dating the sediments. Most Pleistocene zonal boundaries proposed by S. Gartner in 1977 and the Pliocene standard zonal boundaries proposed by E. Martini in 1971 were easily recognized. In addition, several other nannofossil events proposed by D. Rio et al. in 1990 and by T. Sato and T. Takayama in 1992 were recognized and proved valuable for improving the resolution of Pliocene-Pleistocene nannofossil biostratigraphy. The Pliocene-Pleistocene nannofossil biostratigraphic results of Holes 897C and 900A coincide rather well with the discerned paleomagnetic polarity events. As a result, the combination of nannofossil biostratigraphic and paleomagnetic studies provides important information for fulfilling the second objective of this leg: to determine the history of turbidite sedimentation in the Iberia Abyssal Plain. The general trend of sedimentation rates inferred by nannofossil biostratigraphy indicates that sedimentation rates increase from the continental margin to the deep sea along with increasing water depth. |
format |
Other/Unknown Material |
author |
Liu, Li Maiorano, Patrizia Zhao, Xixi |
author_facet |
Liu, Li Maiorano, Patrizia Zhao, Xixi |
author_sort |
Liu, Li |
title |
Pliocene-Pleistocene calcareous nannofossils from the Iberian Abyssal Plain |
title_short |
Pliocene-Pleistocene calcareous nannofossils from the Iberian Abyssal Plain |
title_full |
Pliocene-Pleistocene calcareous nannofossils from the Iberian Abyssal Plain |
title_fullStr |
Pliocene-Pleistocene calcareous nannofossils from the Iberian Abyssal Plain |
title_full_unstemmed |
Pliocene-Pleistocene calcareous nannofossils from the Iberian Abyssal Plain |
title_sort |
pliocene-pleistocene calcareous nannofossils from the iberian abyssal plain |
publisher |
PANGAEA |
publishDate |
1996 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.761565 https://doi.org/10.1594/PANGAEA.761565 |
op_coverage |
MEDIAN LATITUDE: 40.752887 * MEDIAN LONGITUDE: -12.143012 * SOUTH-BOUND LATITUDE: 40.683200 * WEST-BOUND LONGITUDE: -12.474000 * NORTH-BOUND LATITUDE: 40.838800 * EAST-BOUND LONGITUDE: -11.604200 * DATE/TIME START: 1993-03-31T02:15:00 * DATE/TIME END: 1993-05-22T15:00:00 |
long_lat |
ENVELOPE(-12.474000,-11.604200,40.838800,40.683200) |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Supplement to: Liu, Li; Maiorano, Patrizia; Zhao, Xixi (1996): Pliocene-Pleistocene calcareous nannofossils from the Iberian Abyssal Plain. In: Whitmarsh, RB; Sawyer, DS; Klaus, A & Masson, DG (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 149, 147-164, https://doi.org/10.2973/odp.proc.sr.149.209.1996 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.761565 https://doi.org/10.1594/PANGAEA.761565 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.76156510.2973/odp.proc.sr.149.209.1996 |
_version_ |
1810464449072463872 |