Exhumed hydrocarbon traps on the North Atlantic margin: Stratigraphy, palaeontology, provenance and bitumen distribution, an integrated approach
Previous work has demonstrated the presence of a number of exhumed hydrocarbon traps in central East Greenland. Re‐evaluation of the stratigraphy alongside detailed investigation of the occurrence of bitumen within the Mols Bjerge and Laplace Bjerg exhumed hydrocarbon traps provides new perspectives...
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Language: | English |
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ftsouthampton:oai:eprints.soton.ac.uk:437301 2023-07-30T04:03:14+02:00 Exhumed hydrocarbon traps on the North Atlantic margin: Stratigraphy, palaeontology, provenance and bitumen distribution, an integrated approach Andrews, Steven D. Decou, Audrey Braham, Bill Kelly, Simon R. A. Robinson, Paula Morton, Andrew C. Marshall, John E. A. Hyden, Fiona 2019-12-04 text https://eprints.soton.ac.uk/437301/ https://eprints.soton.ac.uk/437301/1/Andrews_et_al_New_Perspectives_revised.doc https://eprints.soton.ac.uk/437301/2/compiled_figures.pdf en English eng https://eprints.soton.ac.uk/437301/1/Andrews_et_al_New_Perspectives_revised.doc https://eprints.soton.ac.uk/437301/2/compiled_figures.pdf Andrews, Steven D., Decou, Audrey, Braham, Bill, Kelly, Simon R. A., Robinson, Paula, Morton, Andrew C., Marshall, John E. A. and Hyden, Fiona (2019) Exhumed hydrocarbon traps on the North Atlantic margin: Stratigraphy, palaeontology, provenance and bitumen distribution, an integrated approach. Basin Research. (doi:10.1111/bre.12424 <http://dx.doi.org/10.1111/bre.12424>). accepted_manuscript Article PeerReviewed 2019 ftsouthampton https://doi.org/10.1111/bre.12424 2023-07-09T22:34:08Z Previous work has demonstrated the presence of a number of exhumed hydrocarbon traps in central East Greenland. Re‐evaluation of the stratigraphy alongside detailed investigation of the occurrence of bitumen within the Mols Bjerge and Laplace Bjerg exhumed hydrocarbon traps provides new perspectives on these structures, as well as the petroleum geology of East Greenland and the wider North Atlantic. Sedimentological and stratigraphic studies, augmented with palynological and provenance investigations, have constrained the dating and correlation of the strata exposed in the Mols Bjerge and Laplace Bjerg. Petrographic analysis, alongside analysis of the bitumen identified, has highlighted a much wider distribution of hydrocarbon than previously recognized. It was previously considered that Jurassic strata formed the main reservoir interval within the Mols Bjerge and Laplace Bjerg exhumed hydrocarbon traps. It is shown here that the reservoir intervals in the Laplace Bjerg trap lie within the Late Triassic Ørsted Dal and Vega Sund members, which contain up to 18% pyrobitumen and were previously misidentified as Jurassic. The Jurassic Bristol Elv Formation is the most extensively bitumen stained unit in the Mols Bjerge trap. However, occurrences of pyrobitumen (up to 3%) are recorded throughout the Triassic stratigraphy, including the Early Triassic Wordie Creek Formation. Faults, thick calcrete development and regionally continuous mudstone units play an important role in compartmentalizing the palaeohydrocarbon accumulations. Article in Journal/Newspaper East Greenland Greenland North Atlantic University of Southampton: e-Prints Soton Greenland Sund ENVELOPE(13.644,13.644,66.207,66.207) Laplace ENVELOPE(141.467,141.467,-66.782,-66.782) Wordie ENVELOPE(-67.500,-67.500,-69.167,-69.167) Ørsted Dal ENVELOPE(-23.583,-23.583,71.750,71.750) Mols Bjerge ENVELOPE(-22.433,-22.433,72.533,72.533) Laplace Bjerg ENVELOPE(-22.533,-22.533,72.933,72.933) Vega Sund ENVELOPE(-22.917,-22.917,72.783,72.783) Basin Research 32 5 1213 1233 |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
Previous work has demonstrated the presence of a number of exhumed hydrocarbon traps in central East Greenland. Re‐evaluation of the stratigraphy alongside detailed investigation of the occurrence of bitumen within the Mols Bjerge and Laplace Bjerg exhumed hydrocarbon traps provides new perspectives on these structures, as well as the petroleum geology of East Greenland and the wider North Atlantic. Sedimentological and stratigraphic studies, augmented with palynological and provenance investigations, have constrained the dating and correlation of the strata exposed in the Mols Bjerge and Laplace Bjerg. Petrographic analysis, alongside analysis of the bitumen identified, has highlighted a much wider distribution of hydrocarbon than previously recognized. It was previously considered that Jurassic strata formed the main reservoir interval within the Mols Bjerge and Laplace Bjerg exhumed hydrocarbon traps. It is shown here that the reservoir intervals in the Laplace Bjerg trap lie within the Late Triassic Ørsted Dal and Vega Sund members, which contain up to 18% pyrobitumen and were previously misidentified as Jurassic. The Jurassic Bristol Elv Formation is the most extensively bitumen stained unit in the Mols Bjerge trap. However, occurrences of pyrobitumen (up to 3%) are recorded throughout the Triassic stratigraphy, including the Early Triassic Wordie Creek Formation. Faults, thick calcrete development and regionally continuous mudstone units play an important role in compartmentalizing the palaeohydrocarbon accumulations. |
format |
Article in Journal/Newspaper |
author |
Andrews, Steven D. Decou, Audrey Braham, Bill Kelly, Simon R. A. Robinson, Paula Morton, Andrew C. Marshall, John E. A. Hyden, Fiona |
spellingShingle |
Andrews, Steven D. Decou, Audrey Braham, Bill Kelly, Simon R. A. Robinson, Paula Morton, Andrew C. Marshall, John E. A. Hyden, Fiona Exhumed hydrocarbon traps on the North Atlantic margin: Stratigraphy, palaeontology, provenance and bitumen distribution, an integrated approach |
author_facet |
Andrews, Steven D. Decou, Audrey Braham, Bill Kelly, Simon R. A. Robinson, Paula Morton, Andrew C. Marshall, John E. A. Hyden, Fiona |
author_sort |
Andrews, Steven D. |
title |
Exhumed hydrocarbon traps on the North Atlantic margin: Stratigraphy, palaeontology, provenance and bitumen distribution, an integrated approach |
title_short |
Exhumed hydrocarbon traps on the North Atlantic margin: Stratigraphy, palaeontology, provenance and bitumen distribution, an integrated approach |
title_full |
Exhumed hydrocarbon traps on the North Atlantic margin: Stratigraphy, palaeontology, provenance and bitumen distribution, an integrated approach |
title_fullStr |
Exhumed hydrocarbon traps on the North Atlantic margin: Stratigraphy, palaeontology, provenance and bitumen distribution, an integrated approach |
title_full_unstemmed |
Exhumed hydrocarbon traps on the North Atlantic margin: Stratigraphy, palaeontology, provenance and bitumen distribution, an integrated approach |
title_sort |
exhumed hydrocarbon traps on the north atlantic margin: stratigraphy, palaeontology, provenance and bitumen distribution, an integrated approach |
publishDate |
2019 |
url |
https://eprints.soton.ac.uk/437301/ https://eprints.soton.ac.uk/437301/1/Andrews_et_al_New_Perspectives_revised.doc https://eprints.soton.ac.uk/437301/2/compiled_figures.pdf |
long_lat |
ENVELOPE(13.644,13.644,66.207,66.207) ENVELOPE(141.467,141.467,-66.782,-66.782) ENVELOPE(-67.500,-67.500,-69.167,-69.167) ENVELOPE(-23.583,-23.583,71.750,71.750) ENVELOPE(-22.433,-22.433,72.533,72.533) ENVELOPE(-22.533,-22.533,72.933,72.933) ENVELOPE(-22.917,-22.917,72.783,72.783) |
geographic |
Greenland Sund Laplace Wordie Ørsted Dal Mols Bjerge Laplace Bjerg Vega Sund |
geographic_facet |
Greenland Sund Laplace Wordie Ørsted Dal Mols Bjerge Laplace Bjerg Vega Sund |
genre |
East Greenland Greenland North Atlantic |
genre_facet |
East Greenland Greenland North Atlantic |
op_relation |
https://eprints.soton.ac.uk/437301/1/Andrews_et_al_New_Perspectives_revised.doc https://eprints.soton.ac.uk/437301/2/compiled_figures.pdf Andrews, Steven D., Decou, Audrey, Braham, Bill, Kelly, Simon R. A., Robinson, Paula, Morton, Andrew C., Marshall, John E. A. and Hyden, Fiona (2019) Exhumed hydrocarbon traps on the North Atlantic margin: Stratigraphy, palaeontology, provenance and bitumen distribution, an integrated approach. Basin Research. (doi:10.1111/bre.12424 <http://dx.doi.org/10.1111/bre.12424>). |
op_rights |
accepted_manuscript |
op_doi |
https://doi.org/10.1111/bre.12424 |
container_title |
Basin Research |
container_volume |
32 |
container_issue |
5 |
container_start_page |
1213 |
op_container_end_page |
1233 |
_version_ |
1772814189987889152 |