Seeing beyond the outcrop
Paleokarst breccias are a common feature of sedimentary rift basins. The Billefjorden Trough in the High Arctic archipelago of Svalbard is an example of such a rift. Here the Carboniferous stratigraphy exhibits intervals of paleokarst breccias formed by gypsum dissolution. In this study we integrate...
Published in: | Marine and Petroleum Geology |
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2021
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ftubpotsdam:oai:kobv.de-opus4-uni-potsdam:63964 2024-06-23T07:48:51+00:00 Seeing beyond the outcrop Janocha, Julian Smyrak-Sikora, Aleksandra Senger, Kim Birchall, Thomas 2021-03-01 https://publishup.uni-potsdam.de/frontdoor/index/index/docId/63964 https://doi.org/10.1016/j.marpetgeo.2020.104833 eng eng https://publishup.uni-potsdam.de/frontdoor/index/index/docId/63964 https://doi.org/10.1016/j.marpetgeo.2020.104833 https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/closedAccess ddc:550 Institut für Geowissenschaften article doc-type:article 2021 ftubpotsdam https://doi.org/10.1016/j.marpetgeo.2020.104833 2024-06-12T00:45:21Z Paleokarst breccias are a common feature of sedimentary rift basins. The Billefjorden Trough in the High Arctic archipelago of Svalbard is an example of such a rift. Here the Carboniferous stratigraphy exhibits intervals of paleokarst breccias formed by gypsum dissolution. In this study we integrate digital outcrop models (DOMs) with a 2D ground penetrating radar (GPR) survey to extrapolate external irregular paleokarst geometries beyond the 2D outcrops. DOMs are obtained through combining a series of overlapping photographs with structure-frommotion photogrammetry, to create mmto dm-resolution georeferenced DOMs. GPR is typically used for surveying the shallow subsurface and relies on detecting the contrasts in electro-magnetic permittivity. We defined three geophysical facies based on their appearance in GPR. By integrating subsurface geophysical data with DOMs we were able to correlate reflection patterns in GPR with outcrop features. The chaotic nature of paleokarst breccias is seen both in outcrop and GPR. Key horizons in outcrop and the GPR profiles allow tying together observations between these methods. Furthermore, we show that this technique expands the twodimensional outcrop surface into a three-dimensional domain, thus complementing, strengthening and extending outcrop interpretations. Article in Journal/Newspaper Arctic Archipelago Arctic Billefjorden Svalbard University of Potsdam: publish.UP Arctic Svalbard Billefjorden ENVELOPE(16.417,16.417,78.563,78.563) Marine and Petroleum Geology 125 104833 |
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Open Polar |
collection |
University of Potsdam: publish.UP |
op_collection_id |
ftubpotsdam |
language |
English |
topic |
ddc:550 Institut für Geowissenschaften |
spellingShingle |
ddc:550 Institut für Geowissenschaften Janocha, Julian Smyrak-Sikora, Aleksandra Senger, Kim Birchall, Thomas Seeing beyond the outcrop |
topic_facet |
ddc:550 Institut für Geowissenschaften |
description |
Paleokarst breccias are a common feature of sedimentary rift basins. The Billefjorden Trough in the High Arctic archipelago of Svalbard is an example of such a rift. Here the Carboniferous stratigraphy exhibits intervals of paleokarst breccias formed by gypsum dissolution. In this study we integrate digital outcrop models (DOMs) with a 2D ground penetrating radar (GPR) survey to extrapolate external irregular paleokarst geometries beyond the 2D outcrops. DOMs are obtained through combining a series of overlapping photographs with structure-frommotion photogrammetry, to create mmto dm-resolution georeferenced DOMs. GPR is typically used for surveying the shallow subsurface and relies on detecting the contrasts in electro-magnetic permittivity. We defined three geophysical facies based on their appearance in GPR. By integrating subsurface geophysical data with DOMs we were able to correlate reflection patterns in GPR with outcrop features. The chaotic nature of paleokarst breccias is seen both in outcrop and GPR. Key horizons in outcrop and the GPR profiles allow tying together observations between these methods. Furthermore, we show that this technique expands the twodimensional outcrop surface into a three-dimensional domain, thus complementing, strengthening and extending outcrop interpretations. |
format |
Article in Journal/Newspaper |
author |
Janocha, Julian Smyrak-Sikora, Aleksandra Senger, Kim Birchall, Thomas |
author_facet |
Janocha, Julian Smyrak-Sikora, Aleksandra Senger, Kim Birchall, Thomas |
author_sort |
Janocha, Julian |
title |
Seeing beyond the outcrop |
title_short |
Seeing beyond the outcrop |
title_full |
Seeing beyond the outcrop |
title_fullStr |
Seeing beyond the outcrop |
title_full_unstemmed |
Seeing beyond the outcrop |
title_sort |
seeing beyond the outcrop |
publishDate |
2021 |
url |
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/63964 https://doi.org/10.1016/j.marpetgeo.2020.104833 |
long_lat |
ENVELOPE(16.417,16.417,78.563,78.563) |
geographic |
Arctic Svalbard Billefjorden |
geographic_facet |
Arctic Svalbard Billefjorden |
genre |
Arctic Archipelago Arctic Billefjorden Svalbard |
genre_facet |
Arctic Archipelago Arctic Billefjorden Svalbard |
op_relation |
https://publishup.uni-potsdam.de/frontdoor/index/index/docId/63964 https://doi.org/10.1016/j.marpetgeo.2020.104833 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.marpetgeo.2020.104833 |
container_title |
Marine and Petroleum Geology |
container_volume |
125 |
container_start_page |
104833 |
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1802639179578867712 |