Sea-level and salinity fluctuations during the Paleocene-Eocene thermal maximum in Arctic Spitsbergen

Palaeoenvironmental manifestations of the Paleocene-Eocene thermal maximum (PETM; ~56Ma) are relatively well documented in low- to mid-latitude settings and at high southern latitudes, but no documented high northern latitude sites record the entire hyperthermal event. We present high-resolution mul...

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Main Authors: Harding , Ian C, Charles, Adam J, Marshall, John E A, Palike, Heiko, Roberts, Andrew, Wilson, Paul A., Jarvis, Edward, Thorne, Robert, Morris, Emily, Moremon, Rebecca, Pearce, Richard B, Akbari, Shir
Format: Article in Journal/Newspaper
Language:unknown
Published: Elsevier 2015
Subjects:
Online Access:http://hdl.handle.net/1885/65134
id ftanucanberra:oai:digitalcollections.anu.edu.au:1885/65134
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spelling ftanucanberra:oai:digitalcollections.anu.edu.au:1885/65134 2023-05-15T14:50:55+02:00 Sea-level and salinity fluctuations during the Paleocene-Eocene thermal maximum in Arctic Spitsbergen Harding , Ian C Charles, Adam J Marshall, John E A Palike, Heiko Roberts, Andrew Wilson, Paul A. Jarvis, Edward Thorne, Robert Morris, Emily Moremon, Rebecca Pearce, Richard B Akbari, Shir 2015-12-10T23:16:36Z http://hdl.handle.net/1885/65134 unknown Elsevier 0012-821X http://hdl.handle.net/1885/65134 Earth and Planetary Science Letters Journal article 2015 ftanucanberra 2015-12-21T23:42:25Z Palaeoenvironmental manifestations of the Paleocene-Eocene thermal maximum (PETM; ~56Ma) are relatively well documented in low- to mid-latitude settings and at high southern latitudes, but no documented high northern latitude sites record the entire hyperthermal event. We present high-resolution multi-proxy records from a PETM succession on Spitsbergen in the high Arctic (palaeolatitude ~75°N). By comparing our results with those from Integrated Ocean Drilling Program Site 302-4A, we document regional palaeoenvironmental variations in the expression of the PETM, with evidence for major differences in basin-margin vegetation and water column oxygen depletion. Sedimentological, palynological and geochemical data demonstrate a pre-PETM sea level rise in Spitsbergen before the -4‰ δ13CTOC excursion, which culminated in maximum flooding during the peak of the event. The appearance of the dinoflagellate cyst Apectodinium before the onset of the carbon isotope excursion (CIE) corroborates that environmental change in the Arctic had begun prior to the CIE. Sedimentological and palynological evidence indicate that elevated terrestrial runoff resulted in water column stratification, providing further evidence for an intensification of the hydrological cycle during the PETM. Article in Journal/Newspaper Arctic Spitsbergen Australian National University: ANU Digital Collections Arctic
institution Open Polar
collection Australian National University: ANU Digital Collections
op_collection_id ftanucanberra
language unknown
description Palaeoenvironmental manifestations of the Paleocene-Eocene thermal maximum (PETM; ~56Ma) are relatively well documented in low- to mid-latitude settings and at high southern latitudes, but no documented high northern latitude sites record the entire hyperthermal event. We present high-resolution multi-proxy records from a PETM succession on Spitsbergen in the high Arctic (palaeolatitude ~75°N). By comparing our results with those from Integrated Ocean Drilling Program Site 302-4A, we document regional palaeoenvironmental variations in the expression of the PETM, with evidence for major differences in basin-margin vegetation and water column oxygen depletion. Sedimentological, palynological and geochemical data demonstrate a pre-PETM sea level rise in Spitsbergen before the -4‰ δ13CTOC excursion, which culminated in maximum flooding during the peak of the event. The appearance of the dinoflagellate cyst Apectodinium before the onset of the carbon isotope excursion (CIE) corroborates that environmental change in the Arctic had begun prior to the CIE. Sedimentological and palynological evidence indicate that elevated terrestrial runoff resulted in water column stratification, providing further evidence for an intensification of the hydrological cycle during the PETM.
format Article in Journal/Newspaper
author Harding , Ian C
Charles, Adam J
Marshall, John E A
Palike, Heiko
Roberts, Andrew
Wilson, Paul A.
Jarvis, Edward
Thorne, Robert
Morris, Emily
Moremon, Rebecca
Pearce, Richard B
Akbari, Shir
spellingShingle Harding , Ian C
Charles, Adam J
Marshall, John E A
Palike, Heiko
Roberts, Andrew
Wilson, Paul A.
Jarvis, Edward
Thorne, Robert
Morris, Emily
Moremon, Rebecca
Pearce, Richard B
Akbari, Shir
Sea-level and salinity fluctuations during the Paleocene-Eocene thermal maximum in Arctic Spitsbergen
author_facet Harding , Ian C
Charles, Adam J
Marshall, John E A
Palike, Heiko
Roberts, Andrew
Wilson, Paul A.
Jarvis, Edward
Thorne, Robert
Morris, Emily
Moremon, Rebecca
Pearce, Richard B
Akbari, Shir
author_sort Harding , Ian C
title Sea-level and salinity fluctuations during the Paleocene-Eocene thermal maximum in Arctic Spitsbergen
title_short Sea-level and salinity fluctuations during the Paleocene-Eocene thermal maximum in Arctic Spitsbergen
title_full Sea-level and salinity fluctuations during the Paleocene-Eocene thermal maximum in Arctic Spitsbergen
title_fullStr Sea-level and salinity fluctuations during the Paleocene-Eocene thermal maximum in Arctic Spitsbergen
title_full_unstemmed Sea-level and salinity fluctuations during the Paleocene-Eocene thermal maximum in Arctic Spitsbergen
title_sort sea-level and salinity fluctuations during the paleocene-eocene thermal maximum in arctic spitsbergen
publisher Elsevier
publishDate 2015
url http://hdl.handle.net/1885/65134
geographic Arctic
geographic_facet Arctic
genre Arctic
Spitsbergen
genre_facet Arctic
Spitsbergen
op_source Earth and Planetary Science Letters
op_relation 0012-821X
http://hdl.handle.net/1885/65134
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