A Late Cretaceous Microfossil Assemblage from the Buffalo Head Hills, North-Central Alberta
A small outcrop belonging to an unnamed shale unit in the Buffalo Head Hills of north-central Alberta has yielded marine microfossils of Senonian, most probably Campanian, age.The foraminiferal fauna, including Haplophragmoides fraseri, Verneuilinoides bearpawensis, Praebulimina carseyae and Casside...
Published in: | Canadian Journal of Earth Sciences |
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Canadian Science Publishing
1975
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Online Access: | http://dx.doi.org/10.1139/e75-106 http://www.nrcresearchpress.com/doi/pdf/10.1139/e75-106 |
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crcansciencepubl:10.1139/e75-106 2024-09-15T18:06:54+00:00 A Late Cretaceous Microfossil Assemblage from the Buffalo Head Hills, North-Central Alberta Wall, John H. Singh, Chaitanya 1975 http://dx.doi.org/10.1139/e75-106 http://www.nrcresearchpress.com/doi/pdf/10.1139/e75-106 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 12, issue 7, page 1157-1174 ISSN 0008-4077 1480-3313 journal-article 1975 crcansciencepubl https://doi.org/10.1139/e75-106 2024-08-22T04:08:45Z A small outcrop belonging to an unnamed shale unit in the Buffalo Head Hills of north-central Alberta has yielded marine microfossils of Senonian, most probably Campanian, age.The foraminiferal fauna, including Haplophragmoides fraseri, Verneuilinoides bearpawensis, Praebulimina carseyae and Cassidella tegulata, suggests equivalence with that of the upper Campanian Bearpaw fauna of southern Alberta.The radiolarian assemblage includes Spongurus (Spongurantha) sp., Spongodiscus (Spongodisus) sp. cf. S. (S.) renillaeformis, Spongostaurus sp., Spongotripus (Spongotripus) sp. cf. S. (S.) morenoensis and Dictyomitra (Dictyomitra) multicostata, which are present in the Bearpaw Formation of southern Alberta, and in an interval of the Schrader Bluff Formation of northern Alaska, considered middle Senonian in age.Among the dinoflagellates recorded from the outcrop, three species of Dinogymnium – D. acuminatum, D. longicornis and D. sibiricum, and four species of Deflandrea – D. granulifera, D. minor, D. spectabilis and D. victoriensis are restricted to strata of Senonian age (inclusive of Maestrichtian Stage). Of this group, Dinogymnium longicornis, Deflandrea granulifera and D. spectabilis are present in the Bearpaw Formation of southern Alberta. The dinoflagellate assemblage has four species in common with that of the Senonian or younger beds in western Siberia.The pollen assemblage is dominated by species of Aquilapollenites – A. dolium, A. trialatus and A. turbidus – strongly indicative of a Campanian age. A megaspore, Balmeisporites rarus, suggests a Senonian age.The microfossil assemblage provides corroborative evidence in support of J. A. Jeletzky's hypothesis that a marine connection existed between the Arctic and Western Interior regions through northern Alberta during the Santonian and Campanian. Article in Journal/Newspaper Foraminifera* Alaska Canadian Science Publishing Canadian Journal of Earth Sciences 12 7 1157 1174 |
institution |
Open Polar |
collection |
Canadian Science Publishing |
op_collection_id |
crcansciencepubl |
language |
English |
description |
A small outcrop belonging to an unnamed shale unit in the Buffalo Head Hills of north-central Alberta has yielded marine microfossils of Senonian, most probably Campanian, age.The foraminiferal fauna, including Haplophragmoides fraseri, Verneuilinoides bearpawensis, Praebulimina carseyae and Cassidella tegulata, suggests equivalence with that of the upper Campanian Bearpaw fauna of southern Alberta.The radiolarian assemblage includes Spongurus (Spongurantha) sp., Spongodiscus (Spongodisus) sp. cf. S. (S.) renillaeformis, Spongostaurus sp., Spongotripus (Spongotripus) sp. cf. S. (S.) morenoensis and Dictyomitra (Dictyomitra) multicostata, which are present in the Bearpaw Formation of southern Alberta, and in an interval of the Schrader Bluff Formation of northern Alaska, considered middle Senonian in age.Among the dinoflagellates recorded from the outcrop, three species of Dinogymnium – D. acuminatum, D. longicornis and D. sibiricum, and four species of Deflandrea – D. granulifera, D. minor, D. spectabilis and D. victoriensis are restricted to strata of Senonian age (inclusive of Maestrichtian Stage). Of this group, Dinogymnium longicornis, Deflandrea granulifera and D. spectabilis are present in the Bearpaw Formation of southern Alberta. The dinoflagellate assemblage has four species in common with that of the Senonian or younger beds in western Siberia.The pollen assemblage is dominated by species of Aquilapollenites – A. dolium, A. trialatus and A. turbidus – strongly indicative of a Campanian age. A megaspore, Balmeisporites rarus, suggests a Senonian age.The microfossil assemblage provides corroborative evidence in support of J. A. Jeletzky's hypothesis that a marine connection existed between the Arctic and Western Interior regions through northern Alberta during the Santonian and Campanian. |
format |
Article in Journal/Newspaper |
author |
Wall, John H. Singh, Chaitanya |
spellingShingle |
Wall, John H. Singh, Chaitanya A Late Cretaceous Microfossil Assemblage from the Buffalo Head Hills, North-Central Alberta |
author_facet |
Wall, John H. Singh, Chaitanya |
author_sort |
Wall, John H. |
title |
A Late Cretaceous Microfossil Assemblage from the Buffalo Head Hills, North-Central Alberta |
title_short |
A Late Cretaceous Microfossil Assemblage from the Buffalo Head Hills, North-Central Alberta |
title_full |
A Late Cretaceous Microfossil Assemblage from the Buffalo Head Hills, North-Central Alberta |
title_fullStr |
A Late Cretaceous Microfossil Assemblage from the Buffalo Head Hills, North-Central Alberta |
title_full_unstemmed |
A Late Cretaceous Microfossil Assemblage from the Buffalo Head Hills, North-Central Alberta |
title_sort |
late cretaceous microfossil assemblage from the buffalo head hills, north-central alberta |
publisher |
Canadian Science Publishing |
publishDate |
1975 |
url |
http://dx.doi.org/10.1139/e75-106 http://www.nrcresearchpress.com/doi/pdf/10.1139/e75-106 |
genre |
Foraminifera* Alaska |
genre_facet |
Foraminifera* Alaska |
op_source |
Canadian Journal of Earth Sciences volume 12, issue 7, page 1157-1174 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e75-106 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
12 |
container_issue |
7 |
container_start_page |
1157 |
op_container_end_page |
1174 |
_version_ |
1810444246444933120 |