Citation:

PANGAEA.986591 (dataset in review)

Name: Spatial and temporal variations of major and trace elements in sediment cores of the Loire River basin (France, 1850-2022)
License: https://creativecommons.org/licenses/by/4.0/
Keywords: major elements; Sediment core; Surface sediment; trace elements

ShareShow Map Google Earth

Abstract:

Between 2009 and 2022, 15 sediment cores were collected from riverbanks, dam reservoirs or secondary river channels along the Loire River and at the most downstream station of its main tributaries before the confluence with the Loire River (Allier, Indre, Cher, Mayenne, Sarthe, Loir rivers). Each site was selected to integrate the contribution of a maximum of potential pollution sources from upstream while avoiding locations immediately downstream of punctual sources with specific geochemical signals that would mask upstream inputs (e.g. wastewater treatment plants, mining or industrial sites…). The chosen site ensured minimal disturbance and alteration of sediment deposition over the past decades, allowing for continuous sediment accumulation. The core metadata has been registered in the CNRS French Core Repository (https://www.cybercarotheque.fr). Analyses focused on major and trace elements compositions (heavy metals and metalloids), all conducted using the same analytical procedures at the French National Centre for Scientific Research (CNRS) SARM-CRPG facilities (Nancy, France; https://sarm.cnrs.fr). In addition, total and organic carbon, grain-size and 137Cs measurements were carried out at the GéHCO research unit (University of Tours) and at the LSCSE research unit (CEA-CNRS-UNSQ) respectively.

Keyword(s):

major elements; Sediment core; Surface sediment; trace elements

Related to:

Dhivert, Elie; Grosbois, Cécile; Courtin-Nomade, A; Bourrain, X; Desmet, Marc (2016): Dynamics of metallic contaminants at a basin scale — Spatial and temporal reconstruction from four sediment cores (Loire fluvial system, France). Science of the Total Environment, 541, 1504-1515, https://doi.org/10.1016/j.scitotenv.2015.09.146

Dhivert, Elie; Grosbois, Cécile; Coynel, Alexandra; Lefèvre, Irène; Desmet, Marc (2015): Influences of major flood sediment inputs on sedimentary and geochemical signals archived in a reservoir core (Upper Loire Basin, France). CATENA, 126, 75-85, https://doi.org/10.1016/j.catena.2014.10.030

Dhivert, Elie; Grosbois, Cécile; Rodrigues, S M; Desmet, Marc (2015): Influence of fluvial environments on sediment archiving processes and temporal pollutant dynamics (Upper Loire River, France). Science of the Total Environment, 505, 121-136, https://doi.org/10.1016/j.scitotenv.2014.09.082

Grosbois, Cécile; Dhivert, Elie; Rodrigues, Stéphane; Le Guern, Jules; Gaspéri, Johnny; Mondamert, Leslie; Labanowski, Jérôme (2025): Drivers of contaminated sediment dynamics over 80 years at a basin scale (Loire river basin, France): a multifactorial approach. Journal of Environmental Management, 394, 127494, https://doi.org/10.1016/j.jenvman.2025.127494

Grosbois, Cécile; Meybeck, Michel; Lestel, L; Lefèvre, Irène; Moatar, F (2012): Severe and contrasted polymetallic contamination patterns (1900–2009) in the Loire River sediments (France). Science of the Total Environment, 435-436, 290-305, https://doi.org/10.1016/j.scitotenv.2012.06.056

Funding:

Agence de l'eau Loire-Bretagne, grant/award no. AE_110117202: MetOrg1

Agence de l'eau Loire-Bretagne, grant/award no. AE_17S0094: MetOrg3000

Coverage:

Median Latitude: 47.147768 * Median Longitude: 0.707272 * South-bound Latitude: 45.985017 * West-bound Longitude: -2.128163 * North-bound Latitude: 47.627663 * East-bound Longitude: 4.046394

Date/Time Start: 2013-06-25T00:00:00 * Date/Time End: 2026-04-01T00:00:00

Minimum DEPTH, sediment/rock: 0.010 m * Maximum DEPTH, sediment/rock: 3.900 m

Event(s):

Loire_03ALL18 * Latitude: 46.349515 * Longitude: 3.336055 * Date/Time: 2022-09-22T00:00:00 * Elevation: 224.0 m * Penetration: 125 cm * Recovery: 125 cm * Campaign: * Basis: Sampling river * Method/Device: Peat corer (PEATC) * Comment: Semi-active channel

Loire_37IND19 * Latitude: 47.259168 * Longitude: 0.465684 * Date/Time: 2023-02-08T00:00:00 * Elevation: 42.0 m * Penetration: 100 cm * Recovery: 100 cm * Campaign: * Basis: Sampling river * Method/Device: Peat corer (PEATC) * Comment: Castle moat

Loire_37LAN18 * Latitude: 47.317541 * Longitude: 0.406875 * Date/Time: 2022-10-31T00:00:00 * Elevation: 36.0 m * Penetration: 110 cm * Recovery: 110 cm * Campaign: * Basis: Sampling river * Method/Device: Peat corer (PEATC) * Comment: Paleochenal, left bank

Comment:

Values with #0.00 are below detection limit, empty values are not measured

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Grosbois, Cécile
2	Sample code/label	Sample label		Grosbois, Cécile
3	DEPTH, sediment/rock	Depth sed	m	Grosbois, Cécile		Geocode
4	Depth, sediment/rock, top/minimum	Depth sed top	m	Grosbois, Cécile
5	Depth, sediment/rock, bottom/maximum	Depth sed bot	m	Grosbois, Cécile
6	AGE	Age	ka BP	Grosbois, Cécile		Geocode
7	Year of deposition	Deposition	a AD	Grosbois, Cécile		age model
8	Year of deposition	Deposition	a AD	Grosbois, Cécile		decade
9	Silver	Ag	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher
10	Mercury	Hg	mg/kg	Grosbois, Cécile	Direct Mercury Analyzer (DMA), Milestone, DMA-80
11	Arsenic	As	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.5
12	Barium	Ba	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 5.5
13	Beryllium	Be	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.05
14	Bismuth	Bi	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.045
15	Cadmium	Cd	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.02
16	Cobalt	Co	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.08
17	Chromium	Cr	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.5
18	Caesium	Cs	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.02
19	Copper	Cu	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 2
20	Gallium	Ga	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.02
21	Germanium	Ge	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.04
22	Hafnium	Hf	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.03
23	Indium	In	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.03
24	Molybdenum	Mo	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.5
25	Niobium	Nb	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.015
26	Nickel	Ni	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 2
27	Lead	Pb	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.45
28	Rubidium	Rb	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.15
29	Antimony	Sb	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.06
30	Scandium	Sc	mg/kg	Grosbois, Cécile	ICP-OES, Thermo Scientific, iCAP 6500	Detection limit: 0.6
31	Tin	Sn	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.3
32	Strontium	Sr	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.7
33	Tantalum	Ta	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.004
34	Thorium	Th	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.015
35	Uranium	U	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.01
36	Vanadium	V	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.85
37	Tungsten	W	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.8
38	Yttrium	Y	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.02
39	Zinc	Zn	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 7
40	Zirconium	Zr	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 1.5
41	Lanthanum	La	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.02
42	Cerium	Ce	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.03
43	Praseodymium	Pr	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.004
44	Neodymium	Nd	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.016
45	Samarium	Sm	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.005
46	Europium	Eu	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.002
47	Gadolinium	Gd	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.005
48	Terbium	Tb	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.001
49	Dysprosium	Dy	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.004
50	Holmium	Ho	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.001
51	Erbium	Er	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.002
52	Thulium	Tm	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.001
53	Ytterbium	Yb	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.002
54	Lutetium	Lu	mg/kg	Grosbois, Cécile	ICP-MS X7, ThermoFisher	Detection limit: 0.001
55	Silicon dioxide	SiO2	%	Grosbois, Cécile	ICP-OES, Thermo Scientific, iCAP 6500	Detection limit: 0.05
56	Aluminium oxide	Al2O3	%	Grosbois, Cécile	ICP-OES, Thermo Scientific, iCAP 6500	Detection limit: 0.04
57	Iron oxide, Fe2O3	Fe2O3	%	Grosbois, Cécile	ICP-OES, Thermo Scientific, iCAP 6500	Detection limit: 0.015
58	Manganese oxide	MnO	%	Grosbois, Cécile	ICP-OES, Thermo Scientific, iCAP 6500	Detection limit: 0.015
59	Magnesium oxide	MgO	%	Grosbois, Cécile	ICP-OES, Thermo Scientific, iCAP 6500	Detection limit: 0.03
60	Calcium oxide	CaO	%	Grosbois, Cécile	ICP-OES, Thermo Scientific, iCAP 6500	Detection limit: 0.03
61	Sodium oxide	Na2O	%	Grosbois, Cécile	ICP-OES, Thermo Scientific, iCAP 6500	Detection limit: 0.02
62	Potassium oxide	K2O	%	Grosbois, Cécile	ICP-OES, Thermo Scientific, iCAP 6500	Detection limit: 0.03
63	Titanium dioxide	TiO2	%	Grosbois, Cécile	ICP-OES, Thermo Scientific, iCAP 6500	Detection limit: 0.02
64	Phosphorus pentoxide	P2O5	%	Grosbois, Cécile	ICP-OES, Thermo Scientific, iCAP 6500	Detection limit: 0.1
65	Loss on ignition	LOI	%	Grosbois, Cécile	Gravimetric analysis	at 1020 °C (1040 °C for carbonates)
66	Total	Total	%	Grosbois, Cécile		Total elements
67	Carbon, total	TC	%	Grosbois, Cécile	Gravimetric analysis	at 1020 °C (1040 °C for carbonates)
68	Sulfur, total	TS	%	Grosbois, Cécile	Gravimetric analysis	at 1020 °C (1040 °C for carbonates)
69	Carbon, organic, total	TOC	%	Grosbois, Cécile	Sulfur/Carbon Analyzer, LECO Corporation, SC-144DR	O2 flow combustion at 1350°C
70	Size fraction < 0.063 mm, mud, silt+clay	<63 µm	%	Grosbois, Cécile	Grain size, Mastersizer 2000, Malvern Instrument Inc.
71	Particle size	Part size	mm	Grosbois, Cécile	Grain size, Mastersizer 2000, Malvern Instrument Inc.	Particle size at which 10% of the sample's particles are smaller
72	Particle size	Part size	mm	Grosbois, Cécile	Grain size, Mastersizer 2000, Malvern Instrument Inc.	Median particle size of the sample
73	Particle size	Part size	mm	Grosbois, Cécile	Grain size, Mastersizer 2000, Malvern Instrument Inc.	Particle size at which 90% of the sample's particles are smaller
74	Comment	Comment		Grosbois, Cécile

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

32835 data points

Download Data

Download dataset as tab-delimited text — use the following character encoding:

View dataset as HTML (shows only first 2000 rows)