Campanian-Maestrichtian planktonic foraminifera of the southern South Atlantic, supplement to: Huber, Brian T (1991): Planktonic foraminifer biostratigraphy of Campanian-Maestrichtian sediments from sites 698 and 700, southern South Atlantic. In: Ciesielski, PF; Kristoffersen, Y; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 114, 281-297
Campanian-Maestrichtian planktonic foraminifers were examined from Sites 698 (2128 m water depth) and 700 (3611 m water depth) on the Northeast Georgia Rise (southern South Atlantic, 51°S). Site 698 penetrated 72.5 m of Campanian-Maestrichtian chalk and limestone with only 18.2% recovery, whereas Si...
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1991
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ftdatacite:10.1594/pangaea.755176 2023-05-15T13:47:34+02:00 Campanian-Maestrichtian planktonic foraminifera of the southern South Atlantic, supplement to: Huber, Brian T (1991): Planktonic foraminifer biostratigraphy of Campanian-Maestrichtian sediments from sites 698 and 700, southern South Atlantic. In: Ciesielski, PF; Kristoffersen, Y; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 114, 281-297 Huber, Brian T 1991 application/zip https://dx.doi.org/10.1594/pangaea.755176 https://doi.pangaea.de/10.1594/PANGAEA.755176 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.2973/odp.proc.sr.114.181.1991 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Drilling/drill rig Leg114 Joides Resolution Ocean Drilling Program ODP Supplementary Collection of Datasets Collection article 1991 ftdatacite https://doi.org/10.1594/pangaea.755176 https://doi.org/10.2973/odp.proc.sr.114.181.1991 2022-02-08T16:24:46Z Campanian-Maestrichtian planktonic foraminifers were examined from Sites 698 (2128 m water depth) and 700 (3611 m water depth) on the Northeast Georgia Rise (southern South Atlantic, 51°S). Site 698 penetrated 72.5 m of Campanian-Maestrichtian chalk and limestone with only 18.2% recovery, whereas Site 700 recovered 66.8% of a 152.7-m section of Coniacian-Maestrichtian limestone. Preservation of planktonic foraminifers from both sites is moderate in Maestrichtian samples, but worsens with increasing depth in the Campanian.The Northeast Georgia Rise planktonic foraminifers are typical of Late Cretaceous Austral Province faunas described from other southern high-latitude sites; species diversity is low and the assemblages are dominated by species of Heterohelix, Globigerinelloides, Hedbergella, and Archaeoglobigerina. Five species, including Globigerinelloides impensus Sliter, Archaeoglobigerina australis Huber, Archaeoglobigerina mateola Huber, Hedbergella sliteri Huber, and Rugotruncana circumnodifer (Finlay), are considered to be endemic to the Austral Province. Formation of a cool temperate water mass in the circum-Antarctic region, resulting from the final breakup of the Gondwana continents, may have led to increased provincialism of the Austral Province planktonic foraminifers during Campanian-Maestrichtian time.Magnetobiostratigraphic correlation of eight planktonic foraminifer datum events at Hole 700B with ages determined for datums at ODP Leg 113 Holes 689B and 690C (Maud Rise, 65°S) demonstrates regional synchroneity of first and last occurrences within the Austral Province. As was observed at the Maud Rise, several keeled and nonkeeled species previously thought to have been restricted to warmer low-latitude regions first occur later at the Northeast Georgia Rise than at the low-latitude sites. The causes for high-latitude diachroneity among these immigrant species are not clear; neither oxygen and carbon isotope data from the Maud Rise sites nor calcareous nannoplankton distributions for the southern South Atlantic region show conspicuous changes that correlate to the delayed first occurrences. Article in Journal/Newspaper Antarc* Antarctic Planktonic foraminifera DataCite Metadata Store (German National Library of Science and Technology) Antarctic Austral Maud Rise ENVELOPE(3.000,3.000,-66.000,-66.000) Georgia Rise ENVELOPE(-32.500,-32.500,-52.500,-52.500) Northeast Georgia Rise ENVELOPE(-32.500,-32.500,-52.500,-52.500) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Drilling/drill rig Leg114 Joides Resolution Ocean Drilling Program ODP |
spellingShingle |
Drilling/drill rig Leg114 Joides Resolution Ocean Drilling Program ODP Huber, Brian T Campanian-Maestrichtian planktonic foraminifera of the southern South Atlantic, supplement to: Huber, Brian T (1991): Planktonic foraminifer biostratigraphy of Campanian-Maestrichtian sediments from sites 698 and 700, southern South Atlantic. In: Ciesielski, PF; Kristoffersen, Y; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 114, 281-297 |
topic_facet |
Drilling/drill rig Leg114 Joides Resolution Ocean Drilling Program ODP |
description |
Campanian-Maestrichtian planktonic foraminifers were examined from Sites 698 (2128 m water depth) and 700 (3611 m water depth) on the Northeast Georgia Rise (southern South Atlantic, 51°S). Site 698 penetrated 72.5 m of Campanian-Maestrichtian chalk and limestone with only 18.2% recovery, whereas Site 700 recovered 66.8% of a 152.7-m section of Coniacian-Maestrichtian limestone. Preservation of planktonic foraminifers from both sites is moderate in Maestrichtian samples, but worsens with increasing depth in the Campanian.The Northeast Georgia Rise planktonic foraminifers are typical of Late Cretaceous Austral Province faunas described from other southern high-latitude sites; species diversity is low and the assemblages are dominated by species of Heterohelix, Globigerinelloides, Hedbergella, and Archaeoglobigerina. Five species, including Globigerinelloides impensus Sliter, Archaeoglobigerina australis Huber, Archaeoglobigerina mateola Huber, Hedbergella sliteri Huber, and Rugotruncana circumnodifer (Finlay), are considered to be endemic to the Austral Province. Formation of a cool temperate water mass in the circum-Antarctic region, resulting from the final breakup of the Gondwana continents, may have led to increased provincialism of the Austral Province planktonic foraminifers during Campanian-Maestrichtian time.Magnetobiostratigraphic correlation of eight planktonic foraminifer datum events at Hole 700B with ages determined for datums at ODP Leg 113 Holes 689B and 690C (Maud Rise, 65°S) demonstrates regional synchroneity of first and last occurrences within the Austral Province. As was observed at the Maud Rise, several keeled and nonkeeled species previously thought to have been restricted to warmer low-latitude regions first occur later at the Northeast Georgia Rise than at the low-latitude sites. The causes for high-latitude diachroneity among these immigrant species are not clear; neither oxygen and carbon isotope data from the Maud Rise sites nor calcareous nannoplankton distributions for the southern South Atlantic region show conspicuous changes that correlate to the delayed first occurrences. |
format |
Article in Journal/Newspaper |
author |
Huber, Brian T |
author_facet |
Huber, Brian T |
author_sort |
Huber, Brian T |
title |
Campanian-Maestrichtian planktonic foraminifera of the southern South Atlantic, supplement to: Huber, Brian T (1991): Planktonic foraminifer biostratigraphy of Campanian-Maestrichtian sediments from sites 698 and 700, southern South Atlantic. In: Ciesielski, PF; Kristoffersen, Y; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 114, 281-297 |
title_short |
Campanian-Maestrichtian planktonic foraminifera of the southern South Atlantic, supplement to: Huber, Brian T (1991): Planktonic foraminifer biostratigraphy of Campanian-Maestrichtian sediments from sites 698 and 700, southern South Atlantic. In: Ciesielski, PF; Kristoffersen, Y; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 114, 281-297 |
title_full |
Campanian-Maestrichtian planktonic foraminifera of the southern South Atlantic, supplement to: Huber, Brian T (1991): Planktonic foraminifer biostratigraphy of Campanian-Maestrichtian sediments from sites 698 and 700, southern South Atlantic. In: Ciesielski, PF; Kristoffersen, Y; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 114, 281-297 |
title_fullStr |
Campanian-Maestrichtian planktonic foraminifera of the southern South Atlantic, supplement to: Huber, Brian T (1991): Planktonic foraminifer biostratigraphy of Campanian-Maestrichtian sediments from sites 698 and 700, southern South Atlantic. In: Ciesielski, PF; Kristoffersen, Y; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 114, 281-297 |
title_full_unstemmed |
Campanian-Maestrichtian planktonic foraminifera of the southern South Atlantic, supplement to: Huber, Brian T (1991): Planktonic foraminifer biostratigraphy of Campanian-Maestrichtian sediments from sites 698 and 700, southern South Atlantic. In: Ciesielski, PF; Kristoffersen, Y; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 114, 281-297 |
title_sort |
campanian-maestrichtian planktonic foraminifera of the southern south atlantic, supplement to: huber, brian t (1991): planktonic foraminifer biostratigraphy of campanian-maestrichtian sediments from sites 698 and 700, southern south atlantic. in: ciesielski, pf; kristoffersen, y; et al. (eds.), proceedings of the ocean drilling program, scientific results, college station, tx (ocean drilling program), 114, 281-297 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
1991 |
url |
https://dx.doi.org/10.1594/pangaea.755176 https://doi.pangaea.de/10.1594/PANGAEA.755176 |
long_lat |
ENVELOPE(3.000,3.000,-66.000,-66.000) ENVELOPE(-32.500,-32.500,-52.500,-52.500) ENVELOPE(-32.500,-32.500,-52.500,-52.500) |
geographic |
Antarctic Austral Maud Rise Georgia Rise Northeast Georgia Rise |
geographic_facet |
Antarctic Austral Maud Rise Georgia Rise Northeast Georgia Rise |
genre |
Antarc* Antarctic Planktonic foraminifera |
genre_facet |
Antarc* Antarctic Planktonic foraminifera |
op_relation |
https://dx.doi.org/10.2973/odp.proc.sr.114.181.1991 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.755176 https://doi.org/10.2973/odp.proc.sr.114.181.1991 |
_version_ |
1766247324379512832 |