Environmental control on the occurrence of high-coercivity magnetic minerals  and formation of iron sulfides in a 640 ka sediment sequence from Lake Ohrid  (Balkans)

Just, Janna; Nowaczyk, Norbert R.; Sagnotti, Leonardo; Francke, Alexander; Vogel, Hendrik; Lacey, Jack H.; Wagner, Bernd

doi:10.5194/bg-13-2093-2016

Articles | Volume 13, issue 7

https://doi.org/10.5194/bg-13-2093-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Integrated perspectives on biological and geological dynamics...

https://doi.org/10.5194/bg-13-2093-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 13, issue 7

Research article

|

08 Apr 2016

Research article |

| 08 Apr 2016

Environmental control on the occurrence of high-coercivity magnetic minerals and formation of iron sulfides in a 640 ka sediment sequence from Lake Ohrid (Balkans)

Janna Just, Norbert R. Nowaczyk, Leonardo Sagnotti, Alexander Francke, Hendrik Vogel, Jack H. Lacey, and Bernd Wagner

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Month	HTML	PDF	XML	Total
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Nov 2015	14	14	4	32
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Mar 2016	17	6	0	23
Apr 2016	96	65	6	167
May 2016	27	16	8	51
Jun 2016	17	12	10	39
Jul 2016	15	8	8	31
Aug 2016	15	7	3	25
Sep 2016	15	7	3	25
Oct 2016	17	12	3	32
Nov 2016	7	2	1	10
Dec 2016	2	5	0	7
Jan 2017	14	21	0	35
Feb 2017	14	32	13	59
Mar 2017	23	40	30	93
Apr 2017	28	53	26	107
May 2017	31	20	20	71
Jun 2017	32	11	13	56
Jul 2017	19	11	6	36
Aug 2017	8	36	10	54
Sep 2017	9	6	11	26
Oct 2017	2	7	12	21
Nov 2017	9	9	14	32
Dec 2017	10	11	28	49
Jan 2018	8	11	18	37
Feb 2018	8	4	12	24
Mar 2018	12	6	19	37
Apr 2018	5	4	21	30
May 2018	12	8	22	42
Jun 2018	11	10	24	45
Jul 2018	13	16	16	45
Aug 2018	16	10	14	40
Sep 2018	12	12	23	47
Oct 2018	10	11	17	38
Nov 2018	10	11	26	47
Dec 2018	11	11	11	33
Jan 2019	10	9	17	36
Feb 2019	7	7	13	27
Mar 2019	3	6	14	23
Apr 2019	6	7	7	20
May 2019	10	9	2	21
Jun 2019	12	10	3	25
Jul 2019	7	5	1	13
Aug 2019	6	4	2	12
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Oct 2019	19	10	2	31
Nov 2019	7	6	2	15
Dec 2019	12	9	3	24
Jan 2020	15	14	5	34
Feb 2020	4	7	3	14
Mar 2020	4	10	2	16
Apr 2020	16	11	4	31
May 2020	9	4	9	22
Jun 2020	11	7	12	30
Jul 2020	31	18	14	63
Aug 2020	18	11	14	43
Sep 2020	17	5	3	25
Oct 2020	16	17	9	42
Nov 2020	12	14	6	32
Dec 2020	14	8	7	29
Jan 2021	24	12	17	53
Feb 2021	19	5	6	30
Mar 2021	15	11	11	37
Apr 2021	14	11	13	38
May 2021	9	14	11	34
Jun 2021	6	9	10	25
Jul 2021	6	12	5	23
Aug 2021	17	15	5	37
Sep 2021	11	10	2	23
Oct 2021	8	37	3	48
Nov 2021	13	34	1	48
Dec 2021	15	12	0	27
Jan 2022	16	18	1	35
Feb 2022	20	13	2	35
Mar 2022	20	10	0	30
Apr 2022	25	11	0	36
May 2022	19	18	1	38
Jun 2022	20	7	1	28
Jul 2022	16	11	1	28
Aug 2022	15	12	2	29
Sep 2022	15	7	1	23
Oct 2022	14	4	0	18
Nov 2022	10	9	0	19
Dec 2022	18	11	1	30
Jan 2023	8	17	1	26
Feb 2023	18	22	1	41
Mar 2023	14	10	2	26
Apr 2023	12	8	0	20
May 2023	29	5	0	34
Jun 2023	31	12	1	44
Jul 2023	9	4	0	13
Aug 2023	13	9	3	25
Sep 2023	9	4	0	13
Oct 2023	13	6	2	21
Nov 2023	8	4	0	12
Dec 2023	18	11	1	30
Jan 2024	12	29	3	44
Feb 2024	13	14	1	28
Mar 2024	11	18	0	29
Apr 2024	9	7	1	17
May 2024	15	13	1	29
Jun 2024	16	12	2	30
Jul 2024	19	8	8	35
Aug 2024	35	15	7	57
Sep 2024	15	13	4	32
Oct 2024	14	9	1	24
Nov 2024	10	11	2	23
Dec 2024	11	12	2	25
Jan 2025	23	10	2	35
Feb 2025	25	11	0	36
Mar 2025	24	13	2	39
Apr 2025	20	18	0	38
May 2025	20	13	0	33
Jun 2025	45	25	0	70
Jul 2025	27	24	4	55
Aug 2025	48	51	2	101
Sep 2025	60	46	2	108
Oct 2025	33	34	2	69
Nov 2025	34	30	17	81

Cumulative views and downloads (calculated since 28 Aug 2015)

Month	HTML	PDF	XML	Total
Aug 2015	18	20	2	40
Sep 2015	29	37	3	69
Oct 2015	19	18	0	37
Nov 2015	14	14	4	32
Dec 2015	4	8	1	13
Jan 2016	14	10	1	25
Feb 2016	12	9	2	23
Mar 2016	17	6	0	23
Apr 2016	96	65	6	167
May 2016	27	16	8	51
Jun 2016	17	12	10	39
Jul 2016	15	8	8	31
Aug 2016	15	7	3	25
Sep 2016	15	7	3	25
Oct 2016	17	12	3	32
Nov 2016	7	2	1	10
Dec 2016	2	5	0	7
Jan 2017	14	21	0	35
Feb 2017	14	32	13	59
Mar 2017	23	40	30	93
Apr 2017	28	53	26	107
May 2017	31	20	20	71
Jun 2017	32	11	13	56
Jul 2017	19	11	6	36
Aug 2017	8	36	10	54
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Oct 2017	2	7	12	21
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Dec 2017	10	11	28	49
Jan 2018	8	11	18	37
Feb 2018	8	4	12	24
Mar 2018	12	6	19	37
Apr 2018	5	4	21	30
May 2018	12	8	22	42
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Jul 2018	13	16	16	45
Aug 2018	16	10	14	40
Sep 2018	12	12	23	47
Oct 2018	10	11	17	38
Nov 2018	10	11	26	47
Dec 2018	11	11	11	33
Jan 2019	10	9	17	36
Feb 2019	7	7	13	27
Mar 2019	3	6	14	23
Apr 2019	6	7	7	20
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Jun 2019	12	10	3	25
Jul 2019	7	5	1	13
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Apr 2020	16	11	4	31
May 2020	9	4	9	22
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Jul 2020	31	18	14	63
Aug 2020	18	11	14	43
Sep 2020	17	5	3	25
Oct 2020	16	17	9	42
Nov 2020	12	14	6	32
Dec 2020	14	8	7	29
Jan 2021	24	12	17	53
Feb 2021	19	5	6	30
Mar 2021	15	11	11	37
Apr 2021	14	11	13	38
May 2021	9	14	11	34
Jun 2021	6	9	10	25
Jul 2021	6	12	5	23
Aug 2021	17	15	5	37
Sep 2021	11	10	2	23
Oct 2021	8	37	3	48
Nov 2021	13	34	1	48
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Jan 2022	16	18	1	35
Feb 2022	20	13	2	35
Mar 2022	20	10	0	30
Apr 2022	25	11	0	36
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Jun 2022	20	7	1	28
Jul 2022	16	11	1	28
Aug 2022	15	12	2	29
Sep 2022	15	7	1	23
Oct 2022	14	4	0	18
Nov 2022	10	9	0	19
Dec 2022	18	11	1	30
Jan 2023	8	17	1	26
Feb 2023	18	22	1	41
Mar 2023	14	10	2	26
Apr 2023	12	8	0	20
May 2023	29	5	0	34
Jun 2023	31	12	1	44
Jul 2023	9	4	0	13
Aug 2023	13	9	3	25
Sep 2023	9	4	0	13
Oct 2023	13	6	2	21
Nov 2023	8	4	0	12
Dec 2023	18	11	1	30
Jan 2024	12	29	3	44
Feb 2024	13	14	1	28
Mar 2024	11	18	0	29
Apr 2024	9	7	1	17
May 2024	15	13	1	29
Jun 2024	16	12	2	30
Jul 2024	19	8	8	35
Aug 2024	35	15	7	57
Sep 2024	15	13	4	32
Oct 2024	14	9	1	24
Nov 2024	10	11	2	23
Dec 2024	11	12	2	25
Jan 2025	23	10	2	35
Feb 2025	25	11	0	36
Mar 2025	24	13	2	39
Apr 2025	20	18	0	38
May 2025	20	13	0	33
Jun 2025	45	25	0	70
Jul 2025	27	24	4	55
Aug 2025	48	51	2	101
Sep 2025	60	46	2	108
Oct 2025	33	34	2	69
Nov 2025	34	30	17	81

Latest update: 26 Nov 2025

Short summary

The magnetic record from Lake Ohrid reflects a strong change in geochemical conditions in the lake. Before 320 ka glacial sediments contain iron sulfides, while later glacials are dominated by siderite. Superimposed on this large-scale pattern are climatic induced changes in the magnetic mineralogy. Glacial and stadial sediments are characterized by relative increases of high- vs. low-coercivity minerals which relate to enhanced erosion in the catchment, possibly due to a sparse vegetation.

Environmental control on the occurrence of high-coercivity magnetic minerals and formation of iron sulfides in a 640 ka sediment sequence from Lake Ohrid (Balkans)

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Environmental control on the occurrence of high-coercivity magnetic minerals and formation of iron sulfides in a 640 ka sediment sequence from Lake Ohrid (Balkans)