Quantitative approach by miospores of the Devonian-Carboniferous transition
editorial reviewed Abstract Spores (miospores), often with diameters around 50 µm, have the advantage, compared to other microfossils, to be produced by each individual terrestrial plant in thousands of specimens, which are transported into the sediments by wind and fluvial or marine streams. The ab...
Main Authors: | , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
International Union of Geosciences (IUGS). SDS
2022
|
Subjects: | |
Online Access: | https://orbi.uliege.be/handle/2268/291821 https://orbi.uliege.be/bitstream/2268/291821/1/Documents%20-Streel%20%26%20di%20Pasquo-1-mer.docx |
id |
ftorbi:oai:orbi.ulg.ac.be:2268/291821 |
---|---|
record_format |
openpolar |
spelling |
ftorbi:oai:orbi.ulg.ac.be:2268/291821 2024-04-21T08:04:03+00:00 Quantitative approach by miospores of the Devonian-Carboniferous transition Streel, Maurice di-Pasquo, Mercedes 2022 https://orbi.uliege.be/handle/2268/291821 https://orbi.uliege.be/bitstream/2268/291821/1/Documents%20-Streel%20%26%20di%20Pasquo-1-mer.docx en eng International Union of Geosciences (IUGS). SDS urn:issn:2074-7268 https://orbi.uliege.be/handle/2268/291821 info:hdl:2268/291821 https://orbi.uliege.be/bitstream/2268/291821/1/Documents%20-Streel%20%26%20di%20Pasquo-1-mer.docx open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess Subcommission on Devonian Stratigraphy Newsletter, 37 (2022) Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique journal article http://purl.org/coar/resource_type/c_6501 info:eu-repo/semantics/article editorial reviewed 2022 ftorbi 2024-03-27T14:51:59Z editorial reviewed Abstract Spores (miospores), often with diameters around 50 µm, have the advantage, compared to other microfossils, to be produced by each individual terrestrial plant in thousands of specimens, which are transported into the sediments by wind and fluvial or marine streams. The abundance of selected species during steps in geological scale has been noted as a useful criterium to help correlate different sedimentary sequences. We take as an example two groups of species, the group lepidophyta and the group pusillites, which are noticed in the literature to be implied in the characterization of the Devonian-Carboniferous transition. From formerly obtained results in rare Famennian coal-beds, it is known that the parent plants of the two groups of spores were living near swamps in deltaic marshes. The group lepidophyta, the most widespread and stratigraphically narrowest, was chosen to be considered in priority. We selected the geological sections studied in the northern Rhenish Massif (Sauerland, Germany) as reference because they are the best known for animal macrofossils, such as goniatites, in particular those species that had been used to fix the DCB before the use of conodonts (and spores), which prevail to-day. In the reference sections in Sauerland, the extinction of the group lepidophyta is observed in two steps. Initially it is most often dominant, with more than 50 % of the total of all spores counted. The first extinction step is characterized by a strong decline of the group lepidophyta, which persist to be present in all samples, but rarely exceeds 5 % of the total of all spores counted. The second extinction step led to the complete absence of the group. These two extinction steps have been noted in several localities in Europe (Ireland, England, Poland, Portugal) but also in Greenland in a sedimentary sequence in which the extinction of the group lepidophyta is linked to warming and humidity increase and the collapse of the final Devonian glacial episode. We have searched these ... Article in Journal/Newspaper Greenland University of Liège: ORBi (Open Repository and Bibliography) |
institution |
Open Polar |
collection |
University of Liège: ORBi (Open Repository and Bibliography) |
op_collection_id |
ftorbi |
language |
English |
topic |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
spellingShingle |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique Streel, Maurice di-Pasquo, Mercedes Quantitative approach by miospores of the Devonian-Carboniferous transition |
topic_facet |
Physical chemical mathematical & earth Sciences Earth sciences & physical geography Physique chimie mathématiques & sciences de la terre Sciences de la terre & géographie physique |
description |
editorial reviewed Abstract Spores (miospores), often with diameters around 50 µm, have the advantage, compared to other microfossils, to be produced by each individual terrestrial plant in thousands of specimens, which are transported into the sediments by wind and fluvial or marine streams. The abundance of selected species during steps in geological scale has been noted as a useful criterium to help correlate different sedimentary sequences. We take as an example two groups of species, the group lepidophyta and the group pusillites, which are noticed in the literature to be implied in the characterization of the Devonian-Carboniferous transition. From formerly obtained results in rare Famennian coal-beds, it is known that the parent plants of the two groups of spores were living near swamps in deltaic marshes. The group lepidophyta, the most widespread and stratigraphically narrowest, was chosen to be considered in priority. We selected the geological sections studied in the northern Rhenish Massif (Sauerland, Germany) as reference because they are the best known for animal macrofossils, such as goniatites, in particular those species that had been used to fix the DCB before the use of conodonts (and spores), which prevail to-day. In the reference sections in Sauerland, the extinction of the group lepidophyta is observed in two steps. Initially it is most often dominant, with more than 50 % of the total of all spores counted. The first extinction step is characterized by a strong decline of the group lepidophyta, which persist to be present in all samples, but rarely exceeds 5 % of the total of all spores counted. The second extinction step led to the complete absence of the group. These two extinction steps have been noted in several localities in Europe (Ireland, England, Poland, Portugal) but also in Greenland in a sedimentary sequence in which the extinction of the group lepidophyta is linked to warming and humidity increase and the collapse of the final Devonian glacial episode. We have searched these ... |
format |
Article in Journal/Newspaper |
author |
Streel, Maurice di-Pasquo, Mercedes |
author_facet |
Streel, Maurice di-Pasquo, Mercedes |
author_sort |
Streel, Maurice |
title |
Quantitative approach by miospores of the Devonian-Carboniferous transition |
title_short |
Quantitative approach by miospores of the Devonian-Carboniferous transition |
title_full |
Quantitative approach by miospores of the Devonian-Carboniferous transition |
title_fullStr |
Quantitative approach by miospores of the Devonian-Carboniferous transition |
title_full_unstemmed |
Quantitative approach by miospores of the Devonian-Carboniferous transition |
title_sort |
quantitative approach by miospores of the devonian-carboniferous transition |
publisher |
International Union of Geosciences (IUGS). SDS |
publishDate |
2022 |
url |
https://orbi.uliege.be/handle/2268/291821 https://orbi.uliege.be/bitstream/2268/291821/1/Documents%20-Streel%20%26%20di%20Pasquo-1-mer.docx |
genre |
Greenland |
genre_facet |
Greenland |
op_source |
Subcommission on Devonian Stratigraphy Newsletter, 37 (2022) |
op_relation |
urn:issn:2074-7268 https://orbi.uliege.be/handle/2268/291821 info:hdl:2268/291821 https://orbi.uliege.be/bitstream/2268/291821/1/Documents%20-Streel%20%26%20di%20Pasquo-1-mer.docx |
op_rights |
open access http://purl.org/coar/access_right/c_abf2 info:eu-repo/semantics/openAccess |
_version_ |
1796943678359470080 |