Early and middle Miocene Antarctic glacial history from the sedimentary facies distribution in the AND-2A drill hole, Ross Sea, Antarctica
In 2007, the Antarctic Geological Drilling Program (ANDRILL) drilled 1138.54 m of strata ~10 km off the East Antarctic coast, includ ing an expanded early to middle Miocene succession not previously recovered from the Antarctic continental shelf. Here, we pre sent a facies model, distribution, and p...
Published in: | Geological Society of America Bulletin |
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Main Authors: | , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Geological Society of America
2011
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Online Access: | http://hdl.handle.net/2122/7528 https://doi.org/10.1130/B30334.1 |
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ftingv:oai:www.earth-prints.org:2122/7528 |
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openpolar |
institution |
Open Polar |
collection |
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) |
op_collection_id |
ftingv |
language |
English |
topic |
ANDRILL-SMS Miocene Ross Sea Antarctica 03. Hydrosphere::03.01. General::03.01.06. Paleoceanography and paleoclimatology 04. Solid Earth::04.04. Geology::04.04.10. Stratigraphy 04. Solid Earth::04.05. Geomagnetism::04.05.06. Paleomagnetism |
spellingShingle |
ANDRILL-SMS Miocene Ross Sea Antarctica 03. Hydrosphere::03.01. General::03.01.06. Paleoceanography and paleoclimatology 04. Solid Earth::04.04. Geology::04.04.10. Stratigraphy 04. Solid Earth::04.05. Geomagnetism::04.05.06. Paleomagnetism Passchier, S. Browne, G. Field, B. Fielding, C. R. Krissek, L. A. Panter, K. Pekar, S. F. ANDRILL-SMS Science Team Early and middle Miocene Antarctic glacial history from the sedimentary facies distribution in the AND-2A drill hole, Ross Sea, Antarctica |
topic_facet |
ANDRILL-SMS Miocene Ross Sea Antarctica 03. Hydrosphere::03.01. General::03.01.06. Paleoceanography and paleoclimatology 04. Solid Earth::04.04. Geology::04.04.10. Stratigraphy 04. Solid Earth::04.05. Geomagnetism::04.05.06. Paleomagnetism |
description |
In 2007, the Antarctic Geological Drilling Program (ANDRILL) drilled 1138.54 m of strata ~10 km off the East Antarctic coast, includ ing an expanded early to middle Miocene succession not previously recovered from the Antarctic continental shelf. Here, we pre sent a facies model, distribution, and paleoclimatic interpretation for the AND-2A drill hole, which enable us, for the fi rst time, to reconstruct periods of early and middle Miocene glacial advance and retreat and paleo environmental changes at an ice-proximal site. Three types of facies associations can be recognized that imply signifi cantly different paleoclimatic interpretations. (1) A diamictite-dominated facies association represents glacially dominated depositional environments, including subglacial environments, with only brief intervals where ice-free coasts existed, and periods when the ice sheet was periodically larger than the modern ice sheet. (2) A stratified diamictite and mudstone facies association includes facies characteristic of open-marine to iceberg-infl uenced depositional environments and is more consistent with a very dynamic ice sheet, with a grounding line south of the modern position. (3) A mudstone-dominated facies association generally lacks diamictites and was produced in a glacially infl uenced hemipelagic depositional environment. Based on the distribution of these facies associations, we can conclude that the Antarctic ice sheets were dynamic, with grounding lines south of the modern location at ca. 20.1–19.6 Ma and ca. 19.3–18.7 Ma and during the Miocene climatic optimum, ca. 17.6–15.4 Ma, with ice-sheet and sea-ice minima at ca. 16.5–16.3 Ma and ca. 15.7–15.6 Ma. While glacial minima at ca. 20.1–19.6 Ma and ca. 19.3–18.7 Ma were characterized by temperate margins, an increased abundance of gravelly facies and diatomaceous siltstone and a lack of meltwater plume deposits suggest a cooler and drier climate with polythermal conditions for the Miocene climatic optimum (ca. 17.6–15.4 Ma). Several periods of major ice growth ... |
author2 |
Passchier, S.; Department of Earth and Environmental Studies, Montclair State University, Montclair, New Jersey 07043, USA Browne, G.; GNS Science, PO Box 30-368, Lower Hutt 5040, New Zealand Field, B.; GNS Science, PO Box 30-368, Lower Hutt 5040, New Zealand Fielding, C. R.; Department of Earth and Atmospheric Sciences, University of Nebraska, Lincoln, Nebraska 68588, USA Krissek, L. A.; School of Earth Sciences, The Ohio State University, Columbus, Ohio 43210, USA Panter, K.; Department of Geology, Bowling Green State University, Bowling Green, Ohio 43403, USA Pekar, S. F.; School of Earth and Environmental Sciences, Queens College, City University of New York, Flushing, New York 11367, USA ANDRILL-SMS Science Team,; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia Department of Earth and Environmental Studies, Montclair State University, Montclair, New Jersey 07043, USA GNS Science, PO Box 30-368, Lower Hutt 5040, New Zealand Department of Earth and Atmospheric Sciences, University of Nebraska, Lincoln, Nebraska 68588, USA School of Earth Sciences, The Ohio State University, Columbus, Ohio 43210, USA Department of Geology, Bowling Green State University, Bowling Green, Ohio 43403, USA School of Earth and Environmental Sciences, Queens College, City University of New York, Flushing, New York 11367, USA Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia |
format |
Article in Journal/Newspaper |
author |
Passchier, S. Browne, G. Field, B. Fielding, C. R. Krissek, L. A. Panter, K. Pekar, S. F. ANDRILL-SMS Science Team |
author_facet |
Passchier, S. Browne, G. Field, B. Fielding, C. R. Krissek, L. A. Panter, K. Pekar, S. F. ANDRILL-SMS Science Team |
author_sort |
Passchier, S. |
title |
Early and middle Miocene Antarctic glacial history from the sedimentary facies distribution in the AND-2A drill hole, Ross Sea, Antarctica |
title_short |
Early and middle Miocene Antarctic glacial history from the sedimentary facies distribution in the AND-2A drill hole, Ross Sea, Antarctica |
title_full |
Early and middle Miocene Antarctic glacial history from the sedimentary facies distribution in the AND-2A drill hole, Ross Sea, Antarctica |
title_fullStr |
Early and middle Miocene Antarctic glacial history from the sedimentary facies distribution in the AND-2A drill hole, Ross Sea, Antarctica |
title_full_unstemmed |
Early and middle Miocene Antarctic glacial history from the sedimentary facies distribution in the AND-2A drill hole, Ross Sea, Antarctica |
title_sort |
early and middle miocene antarctic glacial history from the sedimentary facies distribution in the and-2a drill hole, ross sea, antarctica |
publisher |
Geological Society of America |
publishDate |
2011 |
url |
http://hdl.handle.net/2122/7528 https://doi.org/10.1130/B30334.1 |
geographic |
Antarctic Ross Sea The Antarctic |
geographic_facet |
Antarctic Ross Sea The Antarctic |
genre |
Annals of Glaciology Antarc* Antarctic Antarctic Science Antarctica Ice Sheet Iceberg* Journal of Glaciology Ross Sea Sea ice |
genre_facet |
Annals of Glaciology Antarc* Antarctic Antarctic Science Antarctica Ice Sheet Iceberg* Journal of Glaciology Ross Sea Sea ice |
op_relation |
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ftingv:oai:www.earth-prints.org:2122/7528 2023-05-15T13:29:52+02:00 Early and middle Miocene Antarctic glacial history from the sedimentary facies distribution in the AND-2A drill hole, Ross Sea, Antarctica Passchier, S. Browne, G. Field, B. Fielding, C. R. Krissek, L. A. Panter, K. Pekar, S. F. ANDRILL-SMS Science Team Passchier, S.; Department of Earth and Environmental Studies, Montclair State University, Montclair, New Jersey 07043, USA Browne, G.; GNS Science, PO Box 30-368, Lower Hutt 5040, New Zealand Field, B.; GNS Science, PO Box 30-368, Lower Hutt 5040, New Zealand Fielding, C. R.; Department of Earth and Atmospheric Sciences, University of Nebraska, Lincoln, Nebraska 68588, USA Krissek, L. A.; School of Earth Sciences, The Ohio State University, Columbus, Ohio 43210, USA Panter, K.; Department of Geology, Bowling Green State University, Bowling Green, Ohio 43403, USA Pekar, S. F.; School of Earth and Environmental Sciences, Queens College, City University of New York, Flushing, New York 11367, USA ANDRILL-SMS Science Team,; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia Department of Earth and Environmental Studies, Montclair State University, Montclair, New Jersey 07043, USA GNS Science, PO Box 30-368, Lower Hutt 5040, New Zealand Department of Earth and Atmospheric Sciences, University of Nebraska, Lincoln, Nebraska 68588, USA School of Earth Sciences, The Ohio State University, Columbus, Ohio 43210, USA Department of Geology, Bowling Green State University, Bowling Green, Ohio 43403, USA School of Earth and Environmental Sciences, Queens College, City University of New York, Flushing, New York 11367, USA Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma2, Roma, Italia 2011-11 http://hdl.handle.net/2122/7528 https://doi.org/10.1130/B30334.1 en eng Geological Society of America GSA Bulletin 11-12 / 123 (2011) Acton, G., Florindo, F., Jovane, L., Lum, B., Ohneiser, C., Sagnotti, L., Strada, E., Verosub, K.L., Wilson, G.S., and the ANDRILL-SMS Science Team, 2008, Preliminary integrated chronostratigraphy of the AND-2A Core, ANDRILL Southern McMurdo Sound Project, Antarctica, in Harwood, D.M., Florindo, F., Talarico, F., and Levy, R.H., eds., Studies from the ANDRILL, Southern McMurdo Sound Project, Antarctica: Terra Antartica, v. 15, p. 211–220. 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Paleomagnetism article 2011 ftingv https://doi.org/10.1130/B30334.1 https://doi.org/10.1111/j.1365-3091.1992 2022-07-29T06:06:07Z In 2007, the Antarctic Geological Drilling Program (ANDRILL) drilled 1138.54 m of strata ~10 km off the East Antarctic coast, includ ing an expanded early to middle Miocene succession not previously recovered from the Antarctic continental shelf. Here, we pre sent a facies model, distribution, and paleoclimatic interpretation for the AND-2A drill hole, which enable us, for the fi rst time, to reconstruct periods of early and middle Miocene glacial advance and retreat and paleo environmental changes at an ice-proximal site. Three types of facies associations can be recognized that imply signifi cantly different paleoclimatic interpretations. (1) A diamictite-dominated facies association represents glacially dominated depositional environments, including subglacial environments, with only brief intervals where ice-free coasts existed, and periods when the ice sheet was periodically larger than the modern ice sheet. (2) A stratified diamictite and mudstone facies association includes facies characteristic of open-marine to iceberg-infl uenced depositional environments and is more consistent with a very dynamic ice sheet, with a grounding line south of the modern position. (3) A mudstone-dominated facies association generally lacks diamictites and was produced in a glacially infl uenced hemipelagic depositional environment. Based on the distribution of these facies associations, we can conclude that the Antarctic ice sheets were dynamic, with grounding lines south of the modern location at ca. 20.1–19.6 Ma and ca. 19.3–18.7 Ma and during the Miocene climatic optimum, ca. 17.6–15.4 Ma, with ice-sheet and sea-ice minima at ca. 16.5–16.3 Ma and ca. 15.7–15.6 Ma. While glacial minima at ca. 20.1–19.6 Ma and ca. 19.3–18.7 Ma were characterized by temperate margins, an increased abundance of gravelly facies and diatomaceous siltstone and a lack of meltwater plume deposits suggest a cooler and drier climate with polythermal conditions for the Miocene climatic optimum (ca. 17.6–15.4 Ma). Several periods of major ice growth ... Article in Journal/Newspaper Annals of Glaciology Antarc* Antarctic Antarctic Science Antarctica Ice Sheet Iceberg* Journal of Glaciology Ross Sea Sea ice Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) Antarctic Ross Sea The Antarctic Geological Society of America Bulletin 123 11-12 2352 2365 |