Carboniferous Cyclic Sedimentation and Micropaleontology of Bear Island, Arctic Norway
A stratigraphic study was made of sediments belonging in the Bogevika Member of the Kapp Kåra Formation along Kobbebukta Beach on northern Bear Island, Barents Sea. The Bogevika Member consists of limestones, shales and sandstones organized in a series of small-scale ( 10 m thick) shoaling upward un...
Published in: | Newsletters on Stratigraphy |
---|---|
Main Authors: | , , |
Format: | Text |
Language: | unknown |
Published: |
ScholarWorks
2013
|
Subjects: | |
Online Access: | https://scholarworks.boisestate.edu/geo_facpubs/176 https://doi.org/10.1127/0078-0421/2013/0036 |
id |
ftboisestateu:oai:scholarworks.boisestate.edu:geo_facpubs-1176 |
---|---|
record_format |
openpolar |
spelling |
ftboisestateu:oai:scholarworks.boisestate.edu:geo_facpubs-1176 2023-11-12T04:13:18+01:00 Carboniferous Cyclic Sedimentation and Micropaleontology of Bear Island, Arctic Norway Gradstein, Felix M. Davydov, Vladimir I. Hammer, Øyvind 2013-10-01T07:00:00Z https://scholarworks.boisestate.edu/geo_facpubs/176 https://doi.org/10.1127/0078-0421/2013/0036 unknown ScholarWorks https://scholarworks.boisestate.edu/geo_facpubs/176 https://doi.org/10.1127/0078-0421/2013/0036 Geosciences Faculty Publications and Presentations Barents Sea Bashkirian Bogevika member cyclic sedimentation fusulinid foraminifers paleozoic stratigraphy CGISS Earth Sciences Geophysics and Seismology text 2013 ftboisestateu https://doi.org/10.1127/0078-0421/2013/0036 2023-10-20T00:12:49Z A stratigraphic study was made of sediments belonging in the Bogevika Member of the Kapp Kåra Formation along Kobbebukta Beach on northern Bear Island, Barents Sea. The Bogevika Member consists of limestones, shales and sandstones organized in a series of small-scale ( 10 m thick) shoaling upward units, referred to as cycles. For the first time, Early Bashkirian ozawainellid foraminifers Plectostaffella and Semistaffella were found near the base of the Bogevika Member. Middle Bashkirian Staffelaeformis staffelaeformis and Pseudostaffella ex gr. grandis were found near the top of the member. This implies that marine transgression in the Barents Sea started about 10 myr earlier than understood sofar, i.e. Early Bashkirian instead of Late Bashkirian or beginning of Moscovian. At least nine sedimentary cycles are recognized in the Bogevika Member. The duration of the time interval (∼ 3.5–4 myr) brings the cycles within the Milankovitch frequency band (long eccentricity); this is consistent with durations of Middle Pennsylvanian cyclothems in Kansas, USA. Fusulinids Profusulinella prisca and Schubertella found near the base of the Efuglvika Member are indicative of a significant (2–3 myr) gap between the Bogevika and the overlying Efuglvika Members. Text Arctic Barents Sea Bear Island Boise State University: Scholar Works Arctic Barents Sea Bear Island ENVELOPE(-67.250,-67.250,-68.151,-68.151) Bogevika ENVELOPE(18.933,18.933,74.400,74.400) Efuglvika ENVELOPE(18.917,18.917,74.417,74.417) Kobbebukta ENVELOPE(22.798,22.798,70.339,70.339) Norway Newsletters on Stratigraphy 46 3 303 317 |
institution |
Open Polar |
collection |
Boise State University: Scholar Works |
op_collection_id |
ftboisestateu |
language |
unknown |
topic |
Barents Sea Bashkirian Bogevika member cyclic sedimentation fusulinid foraminifers paleozoic stratigraphy CGISS Earth Sciences Geophysics and Seismology |
spellingShingle |
Barents Sea Bashkirian Bogevika member cyclic sedimentation fusulinid foraminifers paleozoic stratigraphy CGISS Earth Sciences Geophysics and Seismology Gradstein, Felix M. Davydov, Vladimir I. Hammer, Øyvind Carboniferous Cyclic Sedimentation and Micropaleontology of Bear Island, Arctic Norway |
topic_facet |
Barents Sea Bashkirian Bogevika member cyclic sedimentation fusulinid foraminifers paleozoic stratigraphy CGISS Earth Sciences Geophysics and Seismology |
description |
A stratigraphic study was made of sediments belonging in the Bogevika Member of the Kapp Kåra Formation along Kobbebukta Beach on northern Bear Island, Barents Sea. The Bogevika Member consists of limestones, shales and sandstones organized in a series of small-scale ( 10 m thick) shoaling upward units, referred to as cycles. For the first time, Early Bashkirian ozawainellid foraminifers Plectostaffella and Semistaffella were found near the base of the Bogevika Member. Middle Bashkirian Staffelaeformis staffelaeformis and Pseudostaffella ex gr. grandis were found near the top of the member. This implies that marine transgression in the Barents Sea started about 10 myr earlier than understood sofar, i.e. Early Bashkirian instead of Late Bashkirian or beginning of Moscovian. At least nine sedimentary cycles are recognized in the Bogevika Member. The duration of the time interval (∼ 3.5–4 myr) brings the cycles within the Milankovitch frequency band (long eccentricity); this is consistent with durations of Middle Pennsylvanian cyclothems in Kansas, USA. Fusulinids Profusulinella prisca and Schubertella found near the base of the Efuglvika Member are indicative of a significant (2–3 myr) gap between the Bogevika and the overlying Efuglvika Members. |
format |
Text |
author |
Gradstein, Felix M. Davydov, Vladimir I. Hammer, Øyvind |
author_facet |
Gradstein, Felix M. Davydov, Vladimir I. Hammer, Øyvind |
author_sort |
Gradstein, Felix M. |
title |
Carboniferous Cyclic Sedimentation and Micropaleontology of Bear Island, Arctic Norway |
title_short |
Carboniferous Cyclic Sedimentation and Micropaleontology of Bear Island, Arctic Norway |
title_full |
Carboniferous Cyclic Sedimentation and Micropaleontology of Bear Island, Arctic Norway |
title_fullStr |
Carboniferous Cyclic Sedimentation and Micropaleontology of Bear Island, Arctic Norway |
title_full_unstemmed |
Carboniferous Cyclic Sedimentation and Micropaleontology of Bear Island, Arctic Norway |
title_sort |
carboniferous cyclic sedimentation and micropaleontology of bear island, arctic norway |
publisher |
ScholarWorks |
publishDate |
2013 |
url |
https://scholarworks.boisestate.edu/geo_facpubs/176 https://doi.org/10.1127/0078-0421/2013/0036 |
long_lat |
ENVELOPE(-67.250,-67.250,-68.151,-68.151) ENVELOPE(18.933,18.933,74.400,74.400) ENVELOPE(18.917,18.917,74.417,74.417) ENVELOPE(22.798,22.798,70.339,70.339) |
geographic |
Arctic Barents Sea Bear Island Bogevika Efuglvika Kobbebukta Norway |
geographic_facet |
Arctic Barents Sea Bear Island Bogevika Efuglvika Kobbebukta Norway |
genre |
Arctic Barents Sea Bear Island |
genre_facet |
Arctic Barents Sea Bear Island |
op_source |
Geosciences Faculty Publications and Presentations |
op_relation |
https://scholarworks.boisestate.edu/geo_facpubs/176 https://doi.org/10.1127/0078-0421/2013/0036 |
op_doi |
https://doi.org/10.1127/0078-0421/2013/0036 |
container_title |
Newsletters on Stratigraphy |
container_volume |
46 |
container_issue |
3 |
container_start_page |
303 |
op_container_end_page |
317 |
_version_ |
1782331363566813184 |