Assessing the composition of fragmented agglutinated foraminiferal assemblages in ancient sediments: comparison of counting and area-based methods in Famennian samples (Late Devonian)

Girard, Catherine; Dufour, Anne-Béatrice; Charruault, Anne-Lise; Renaud, Sabrina

doi:https://doi.org/10.5194/jm-37-87-2018

Articles | Volume 37, issue 1

https://doi.org/10.5194/jm-37-87-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/jm-37-87-2018

© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 37, issue 1

Research article

|

05 Jan 2018

Research article |

| 05 Jan 2018

Assessing the composition of fragmented agglutinated foraminiferal assemblages in ancient sediments: comparison of counting and area-based methods in Famennian samples (Late Devonian)

Catherine Girard, Anne-Béatrice Dufour, Anne-Lise Charruault, and Sabrina Renaud

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Cumulative views and downloads (calculated since 05 Jan 2018)

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Jan 2018	29	22	2	53
Feb 2018	23	5	7	35
Mar 2018	9	8	1	18
Apr 2018	4	5	0	9
May 2018	8	6	1	15
Jun 2018	8	3	0	11
Jul 2018	12	8	0	20
Aug 2018	5	3	0	8
Sep 2018	9	8	1	18
Oct 2018	12	9	2	23
Nov 2018	9	3	1	13
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Feb 2019	5	5	2	12
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Apr 2019	11	6	0	17
May 2019	14	8	0	22
Jun 2019	237	7	0	244
Jul 2019	236	5	0	241
Aug 2019	69	8	1	78
Sep 2019	103	7	0	110
Oct 2019	98	20	0	118
Nov 2019	154	5	0	159
Dec 2019	92	9	0	101
Jan 2020	89	7	0	96
Feb 2020	49	8	0	57
Mar 2020	39	10	3	52
Apr 2020	12	3	0	15
May 2020	21	3	0	24
Jun 2020	37	6	1	44
Jul 2020	140	15	15	170
Aug 2020	203	6	3	212
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Oct 2020	26	4	0	30
Nov 2020	29	10	1	40
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Short summary

This study constitutes an attempt to analyze the variations in foraminiferal assemblages using the morphogroup approach in the Late Devonian. Our results show that both methods of estimating morphotype percentages, the traditional counting and the cumulated area methods, provide similar results, are highly correlated with each other, and provide similar relationships with paleoenvironmental proxies.


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