First record of carbonates with spherulites and cone-in-cone structures from the Precambrian of Arctic Norway, and their palaeoenvironmental significance
We report for the first time carbonates from the upper Ediacaran sedimentary succession of Finnmark, Arctic Norway. Carbonates occur as calcareous siliciclastic beds, lenses, and concretions, some with calcite spherulites and cone-in-cone (CIC) calcite, in a mudrock to fine-grained sandstone success...
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ftkeeleuniv:oai:eprints.keele.ac.uk:6175 2023-07-30T03:59:59+02:00 First record of carbonates with spherulites and cone-in-cone structures from the Precambrian of Arctic Norway, and their palaeoenvironmental significance Meinhold, G Jensen, S Høyberget, M Arslan, A Ebbestad, JOR Högström, AES Palacios, T Agić, H Taylor, WL 2019-07-15 text https://eprints.keele.ac.uk/id/eprint/6175/ https://eprints.keele.ac.uk/id/eprint/6175/1/Meinhold_etal_PrecambRes_accepted-ms.pdf https://doi.org/10.1016/j.precamres.2019.04.014 en eng Elsevier https://eprints.keele.ac.uk/id/eprint/6175/1/Meinhold_etal_PrecambRes_accepted-ms.pdf Meinhold, G orcid:0000-0001-8375-8375 , Jensen, S, Høyberget, M, Arslan, A, Ebbestad, JOR, Högström, AES, Palacios, T, Agić, H and Taylor, WL (2019) First record of carbonates with spherulites and cone-in-cone structures from the Precambrian of Arctic Norway, and their palaeoenvironmental significance. Precambrian Research, 328. pp. 99-110. doi:10.1016/j.precamres.2019.04.014 cc_by_nc_nd_4 GB Physical geography QE Geology Article PeerReviewed 2019 ftkeeleuniv https://doi.org/10.1016/j.precamres.2019.04.014 2023-07-10T21:17:18Z We report for the first time carbonates from the upper Ediacaran sedimentary succession of Finnmark, Arctic Norway. Carbonates occur as calcareous siliciclastic beds, lenses, and concretions, some with calcite spherulites and cone-in-cone (CIC) calcite, in a mudrock to fine-grained sandstone succession from approximately 3 m to 26 m above the base of the 2nd cycle of the Manndrapselva Member of the Stáhpogieddi Formation (Vestertana Group). They occur c. 40 m below the Ediacaran–Cambrian boundary, which is well defined by trace fossils. Thin-section petrography and scanning micro X-ray fluorescence elemental mapping reveal a layered composition of the calcareous sedimentary rocks. In some of those, well-developed nested cones of CIC calcite form the outer layer. Thin clay coatings outline individual cones. The inner layers are composed of (1) carbonate with calcite spherulites (grainstone) and (2) thinly laminated fine-grained calcareous siliciclastics (mudstone and wackestone) indicated by elevated concentrations of Al, Si, Fe, and Ti. The inner siliciclastic layers contain framboidal pyrite and probably organic matter. Formation of calcite spherulites took place probably at the sediment–water interface either in a coastal littoral environment or in situ in the sublittoral zone under high alkaline conditions whereas CIC calcite formed during burial diagenesis and clearly in pre-Caledonian time before metamorphism and cleavage formation. This new record of carbonates with calcite spherulites and CIC structures from the Ediacaran of Arctic Norway adds to their rare occurrences in the geological record. Article in Journal/Newspaper Arctic Arctic Finnmark Finnmark Keele University: Keele Research Repository Arctic Cones The ENVELOPE(78.344,78.344,-68.635,-68.635) Cones, The ENVELOPE(78.344,78.344,-68.635,-68.635) Norway Stáhpogieddi ENVELOPE(28.018,28.018,70.543,70.543) Vestertana ENVELOPE(27.868,27.868,70.424,70.424) Precambrian Research 328 99 110 |
institution |
Open Polar |
collection |
Keele University: Keele Research Repository |
op_collection_id |
ftkeeleuniv |
language |
English |
topic |
GB Physical geography QE Geology |
spellingShingle |
GB Physical geography QE Geology Meinhold, G Jensen, S Høyberget, M Arslan, A Ebbestad, JOR Högström, AES Palacios, T Agić, H Taylor, WL First record of carbonates with spherulites and cone-in-cone structures from the Precambrian of Arctic Norway, and their palaeoenvironmental significance |
topic_facet |
GB Physical geography QE Geology |
description |
We report for the first time carbonates from the upper Ediacaran sedimentary succession of Finnmark, Arctic Norway. Carbonates occur as calcareous siliciclastic beds, lenses, and concretions, some with calcite spherulites and cone-in-cone (CIC) calcite, in a mudrock to fine-grained sandstone succession from approximately 3 m to 26 m above the base of the 2nd cycle of the Manndrapselva Member of the Stáhpogieddi Formation (Vestertana Group). They occur c. 40 m below the Ediacaran–Cambrian boundary, which is well defined by trace fossils. Thin-section petrography and scanning micro X-ray fluorescence elemental mapping reveal a layered composition of the calcareous sedimentary rocks. In some of those, well-developed nested cones of CIC calcite form the outer layer. Thin clay coatings outline individual cones. The inner layers are composed of (1) carbonate with calcite spherulites (grainstone) and (2) thinly laminated fine-grained calcareous siliciclastics (mudstone and wackestone) indicated by elevated concentrations of Al, Si, Fe, and Ti. The inner siliciclastic layers contain framboidal pyrite and probably organic matter. Formation of calcite spherulites took place probably at the sediment–water interface either in a coastal littoral environment or in situ in the sublittoral zone under high alkaline conditions whereas CIC calcite formed during burial diagenesis and clearly in pre-Caledonian time before metamorphism and cleavage formation. This new record of carbonates with calcite spherulites and CIC structures from the Ediacaran of Arctic Norway adds to their rare occurrences in the geological record. |
format |
Article in Journal/Newspaper |
author |
Meinhold, G Jensen, S Høyberget, M Arslan, A Ebbestad, JOR Högström, AES Palacios, T Agić, H Taylor, WL |
author_facet |
Meinhold, G Jensen, S Høyberget, M Arslan, A Ebbestad, JOR Högström, AES Palacios, T Agić, H Taylor, WL |
author_sort |
Meinhold, G |
title |
First record of carbonates with spherulites and cone-in-cone structures from the Precambrian of Arctic Norway, and their palaeoenvironmental significance |
title_short |
First record of carbonates with spherulites and cone-in-cone structures from the Precambrian of Arctic Norway, and their palaeoenvironmental significance |
title_full |
First record of carbonates with spherulites and cone-in-cone structures from the Precambrian of Arctic Norway, and their palaeoenvironmental significance |
title_fullStr |
First record of carbonates with spherulites and cone-in-cone structures from the Precambrian of Arctic Norway, and their palaeoenvironmental significance |
title_full_unstemmed |
First record of carbonates with spherulites and cone-in-cone structures from the Precambrian of Arctic Norway, and their palaeoenvironmental significance |
title_sort |
first record of carbonates with spherulites and cone-in-cone structures from the precambrian of arctic norway, and their palaeoenvironmental significance |
publisher |
Elsevier |
publishDate |
2019 |
url |
https://eprints.keele.ac.uk/id/eprint/6175/ https://eprints.keele.ac.uk/id/eprint/6175/1/Meinhold_etal_PrecambRes_accepted-ms.pdf https://doi.org/10.1016/j.precamres.2019.04.014 |
long_lat |
ENVELOPE(78.344,78.344,-68.635,-68.635) ENVELOPE(78.344,78.344,-68.635,-68.635) ENVELOPE(28.018,28.018,70.543,70.543) ENVELOPE(27.868,27.868,70.424,70.424) |
geographic |
Arctic Cones The Cones, The Norway Stáhpogieddi Vestertana |
geographic_facet |
Arctic Cones The Cones, The Norway Stáhpogieddi Vestertana |
genre |
Arctic Arctic Finnmark Finnmark |
genre_facet |
Arctic Arctic Finnmark Finnmark |
op_relation |
https://eprints.keele.ac.uk/id/eprint/6175/1/Meinhold_etal_PrecambRes_accepted-ms.pdf Meinhold, G orcid:0000-0001-8375-8375 , Jensen, S, Høyberget, M, Arslan, A, Ebbestad, JOR, Högström, AES, Palacios, T, Agić, H and Taylor, WL (2019) First record of carbonates with spherulites and cone-in-cone structures from the Precambrian of Arctic Norway, and their palaeoenvironmental significance. Precambrian Research, 328. pp. 99-110. doi:10.1016/j.precamres.2019.04.014 |
op_rights |
cc_by_nc_nd_4 |
op_doi |
https://doi.org/10.1016/j.precamres.2019.04.014 |
container_title |
Precambrian Research |
container_volume |
328 |
container_start_page |
99 |
op_container_end_page |
110 |
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1772810652943908864 |