Microfossil-like tourmaline microlites in early Proterozoic nodular chert at Kiihtelysvaara, eastern Finland
Many Proterozoic silicified sedimentary carbonates have been reported to contain remains of early micro-organisms. One of these localities in the Fennoscandian Shield is the village of Hyypiä at Kiihtelysvaara in eastern Finland, where a nodular chert contains microfossil-like objects, named Hyypian...
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Geological Society of Finland
1992
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ftdoajarticles:oai:doaj.org/article:327ac32e6b1040e8882c96d9ba5e4d7a 2023-05-15T16:12:57+02:00 Microfossil-like tourmaline microlites in early Proterozoic nodular chert at Kiihtelysvaara, eastern Finland J. Karhu H. O'Brien 1992-06-01T00:00:00Z https://doi.org/10.17741/bgsf/64.1.008 https://doaj.org/article/327ac32e6b1040e8882c96d9ba5e4d7a EN eng Geological Society of Finland http://www.geologinenseura.fi/bulletin/Volume64/sgs_bt_064_1_pages_113_118.pdf https://doaj.org/toc/0367-5211 https://doaj.org/toc/1799-4632 doi:10.17741/bgsf/64.1.008 0367-5211 1799-4632 https://doaj.org/article/327ac32e6b1040e8882c96d9ba5e4d7a Bulletin of the Geological Society of Finland, Vol 64, Iss 1, Pp 113-118 (1992) microfossils pseudomicrofossils Hyypiana jatulica tourmaline dravite chert dolostone Proterozoic Hyypiä Kiihtelysvaara Finland Geology QE1-996.5 article 1992 ftdoajarticles https://doi.org/10.17741/bgsf/64.1.008 2022-12-31T08:55:40Z Many Proterozoic silicified sedimentary carbonates have been reported to contain remains of early micro-organisms. One of these localities in the Fennoscandian Shield is the village of Hyypiä at Kiihtelysvaara in eastern Finland, where a nodular chert contains microfossil-like objects, named Hyypiana jatulica n. gen., species R. Tynni. The original thin sections and grain mounts from Kiihtelysvaara were reinvestigated petrographically, and similar objects in a new grain mount from the original drill core specimen were analysed using microprobe. Petrographical and geochemical results prove that the microfossil-like objects in these samples from the nodular chert at Kiihtelysvaara are mineralogic pseudomicrofossils consisting of tourmaline microlites. Their chemical composition is similar to dravitic tourmalines from a cherty dolomite formation located in Kuusamo, eastern Finland. Article in Journal/Newspaper Fennoscandian Directory of Open Access Journals: DOAJ Articles Kuusamo ENVELOPE(29.183,29.183,65.967,65.967) Bulletin of the Geological Society of Finland 64 1 113 118 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
microfossils pseudomicrofossils Hyypiana jatulica tourmaline dravite chert dolostone Proterozoic Hyypiä Kiihtelysvaara Finland Geology QE1-996.5 |
spellingShingle |
microfossils pseudomicrofossils Hyypiana jatulica tourmaline dravite chert dolostone Proterozoic Hyypiä Kiihtelysvaara Finland Geology QE1-996.5 J. Karhu H. O'Brien Microfossil-like tourmaline microlites in early Proterozoic nodular chert at Kiihtelysvaara, eastern Finland |
topic_facet |
microfossils pseudomicrofossils Hyypiana jatulica tourmaline dravite chert dolostone Proterozoic Hyypiä Kiihtelysvaara Finland Geology QE1-996.5 |
description |
Many Proterozoic silicified sedimentary carbonates have been reported to contain remains of early micro-organisms. One of these localities in the Fennoscandian Shield is the village of Hyypiä at Kiihtelysvaara in eastern Finland, where a nodular chert contains microfossil-like objects, named Hyypiana jatulica n. gen., species R. Tynni. The original thin sections and grain mounts from Kiihtelysvaara were reinvestigated petrographically, and similar objects in a new grain mount from the original drill core specimen were analysed using microprobe. Petrographical and geochemical results prove that the microfossil-like objects in these samples from the nodular chert at Kiihtelysvaara are mineralogic pseudomicrofossils consisting of tourmaline microlites. Their chemical composition is similar to dravitic tourmalines from a cherty dolomite formation located in Kuusamo, eastern Finland. |
format |
Article in Journal/Newspaper |
author |
J. Karhu H. O'Brien |
author_facet |
J. Karhu H. O'Brien |
author_sort |
J. Karhu |
title |
Microfossil-like tourmaline microlites in early Proterozoic nodular chert at Kiihtelysvaara, eastern Finland |
title_short |
Microfossil-like tourmaline microlites in early Proterozoic nodular chert at Kiihtelysvaara, eastern Finland |
title_full |
Microfossil-like tourmaline microlites in early Proterozoic nodular chert at Kiihtelysvaara, eastern Finland |
title_fullStr |
Microfossil-like tourmaline microlites in early Proterozoic nodular chert at Kiihtelysvaara, eastern Finland |
title_full_unstemmed |
Microfossil-like tourmaline microlites in early Proterozoic nodular chert at Kiihtelysvaara, eastern Finland |
title_sort |
microfossil-like tourmaline microlites in early proterozoic nodular chert at kiihtelysvaara, eastern finland |
publisher |
Geological Society of Finland |
publishDate |
1992 |
url |
https://doi.org/10.17741/bgsf/64.1.008 https://doaj.org/article/327ac32e6b1040e8882c96d9ba5e4d7a |
long_lat |
ENVELOPE(29.183,29.183,65.967,65.967) |
geographic |
Kuusamo |
geographic_facet |
Kuusamo |
genre |
Fennoscandian |
genre_facet |
Fennoscandian |
op_source |
Bulletin of the Geological Society of Finland, Vol 64, Iss 1, Pp 113-118 (1992) |
op_relation |
http://www.geologinenseura.fi/bulletin/Volume64/sgs_bt_064_1_pages_113_118.pdf https://doaj.org/toc/0367-5211 https://doaj.org/toc/1799-4632 doi:10.17741/bgsf/64.1.008 0367-5211 1799-4632 https://doaj.org/article/327ac32e6b1040e8882c96d9ba5e4d7a |
op_doi |
https://doi.org/10.17741/bgsf/64.1.008 |
container_title |
Bulletin of the Geological Society of Finland |
container_volume |
64 |
container_issue |
1 |
container_start_page |
113 |
op_container_end_page |
118 |
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1765998552185569280 |