Citation:

PANGAEA.957996

Name: Authigenic element concentration and neodymium isotope from IODP Sites 303-U1302, 303-U1305, and ODP Site 105--647
Published: 2023-05-24
License: https://creativecommons.org/licenses/by/4.0/
Keywords: authigenic sediment fraction; IODP; Labrador Sea; marine sediment; Neodymium isotopes; ocean circulation; Rare earth elements; trace metals

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Abstract:

Labrador Sea sediment cores IODP 303-U1302, 303-U1305, and ODP 105-647 were investigated for their authigenic trace metal concentrations and neodymium isotope signatures. The sediments are 0 - 35 thousand years old and the authigenic fractions were extracted with weak acid-reductive bulk sediment leaching, with leaching of the decarbonated sediment, and from picked foraminifera samples, and analysed using ICP-QMS and MC-ICP-MS in 2016 - 2019. They were interpreted in terms of exchange with sediment and sea water, and regional climate-induced changes in continental weathering and ocean circulation.

Data of three sediment sites were extracted with three different methods. Columns are site and core name, sample depth in cm top and bottom and meters composite depth, sample mass in grams, epsilon Nd signature, two standard deviations uncertainty to epsilon Nd signature, concentrations of 32 elements in µg per gram bulk sediment used, calculated carbonate concentration relative to bulk sediment mass in %, the ratio of heavy to light rare earth elements, mid rare earth element enrichment, cerium anomaly, europium anomaly, sediment age minimum, maximum, and weighted mean in thousand years inferred from sediment datings analysed with the BACON package for the R software, and the sediment classification in terms of IRD events.

Keyword(s):

authigenic sediment fraction; IODP; Labrador Sea; marine sediment; Neodymium isotopes; ocean circulation; Rare earth elements; trace metals

Related to:

Blaser, Patrick; Gutjahr, Marcus; Pöppelmeier, Frerk; Frank, Martin; Kaboth-Bahr, Stefanie; Lippold, Jörg (2020): Labrador Sea bottom water provenance and REE exchange during the past 35,000 years. Earth and Planetary Science Letters, 542, 116299, https://doi.org/10.1016/j.epsl.2020.116299

Coverage:

Median Latitude: 52.683611 * Median Longitude: -46.410910 * South-bound Latitude: 50.002776 * West-bound Longitude: -48.530217 * North-bound Latitude: 57.475150 * East-bound Longitude: -45.262000

Date/Time Start: 1985-10-23T18:15:00 * Date/Time End: 1985-10-25T06:15:00

Minimum Elevation: -3871.0 m * Maximum Elevation: -3458.8 m

Event(s):

105-647B * Latitude: 53.331300 * Longitude: -45.262000 * Date/Time Start: 1985-10-23T18:15:00 * Date/Time End: 1985-10-25T06:15:00 * Elevation: -3871.0 m * Penetration: 103.3 m * Recovery: 93.17 m * Location: South Atlantic Ocean * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 11 core; 103.3 m cored; 0 m drilled; 90.2 % recovery

303-U1302B * Latitude: 50.002776 * Longitude: -45.638167 * Elevation: -3563.4 m * Recovery: 102.82 m * Campaign: (North Atlantic Climate 1) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 11 cores; 104.7 m cored; 98.2 % recovered; 0 m drilled; 104.7 m penetrated

303-U1302C * Latitude: 50.166783 * Longitude: -45.638483 * Elevation: -3559.2 m * Recovery: 97.06 m * Campaign: (North Atlantic Climate 1) * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 11 cores; 104.5 m cored; 92.9 % recovered; 0 m drilled; 104.5 m penetrated

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Blaser, Patrick
2	Sample code/label	Sample label		Blaser, Patrick	DSDP/ODP/IODP sample designation
3	Half	Half		Blaser, Patrick
4	Depth, composite	Depth comp	mcd	Blaser, Patrick
5	Treatment	Treat		Blaser, Patrick
6	Sample mass	Samp m	g	Blaser, Patrick
7	ε-Neodymium	ε-Nd		Blaser, Patrick	See Device type column
8	ε-Neodymium, standard deviation	ε-Nd std dev	±	Blaser, Patrick	See Device type column	2SD
9	Device type	Device		Blaser, Patrick		Method/Device for ε-Nd
10	Magnesium	Mg	µg/g	Blaser, Patrick	See Device type column
11	Aluminium	Al	µg/g	Blaser, Patrick	See Device type column
12	Calcium	Ca	µg/g	Blaser, Patrick	See Device type column
13	Scandium	Sc	µg/g	Blaser, Patrick	See Device type column
14	Titanium	Ti	µg/g	Blaser, Patrick	See Device type column
15	Manganese	Mn	µg/g	Blaser, Patrick	See Device type column
16	Iron	Fe	µg/g	Blaser, Patrick	See Device type column
17	Cobalt	Co	µg/g	Blaser, Patrick	See Device type column
18	Nickel	Ni	µg/g	Blaser, Patrick	See Device type column
19	Copper	Cu	µg/g	Blaser, Patrick	See Device type column
20	Zinc	Zn	µg/g	Blaser, Patrick	See Device type column
21	Rubidium	Rb	µg/g	Blaser, Patrick	See Device type column
22	Strontium	Sr	µg/g	Blaser, Patrick	See Device type column
23	Yttrium	Y	µg/g	Blaser, Patrick	See Device type column
24	Zirconium	Zr	µg/g	Blaser, Patrick	See Device type column
25	Barium	Ba	µg/g	Blaser, Patrick	See Device type column
26	Lanthanum	La	µg/g	Blaser, Patrick	See Device type column
27	Cerium	Ce	µg/g	Blaser, Patrick	See Device type column
28	Praseodymium	Pr	µg/g	Blaser, Patrick	See Device type column
29	Neodymium	Nd	µg/g	Blaser, Patrick	See Device type column
30	Samarium	Sm	µg/g	Blaser, Patrick	See Device type column
31	Europium	Eu	µg/g	Blaser, Patrick	See Device type column
32	Gadolinium	Gd	µg/g	Blaser, Patrick	See Device type column
33	Terbium	Tb	µg/g	Blaser, Patrick	See Device type column
34	Dysprosium	Dy	µg/g	Blaser, Patrick	See Device type column
35	Holmium	Ho	µg/g	Blaser, Patrick	See Device type column
36	Erbium	Er	µg/g	Blaser, Patrick	See Device type column
37	Thulium	Tm	µg/g	Blaser, Patrick	See Device type column
38	Ytterbium	Yb	µg/g	Blaser, Patrick	See Device type column
39	Lutetium	Lu	µg/g	Blaser, Patrick	See Device type column
40	Lead	Pb	µg/g	Blaser, Patrick	See Device type column
41	Uranium	U	µg/g	Blaser, Patrick	See Device type column
42	Device type	Device		Blaser, Patrick		Method/Device for concentrations
43	Carbonates	Carb	%	Blaser, Patrick	Calculated
44	Heavy rare-earth elements/light rare-earth elements ratio	HREE/LREE		Blaser, Patrick	Calculated
45	Middle rare-earth elements anomaly	MREE/MREE*		Blaser, Patrick	Calculated
46	Cerium anomaly	Ce/Ce*		Blaser, Patrick	Calculated
47	Europium anomaly	Eu/Eu*		Blaser, Patrick	Calculated
48	Age, minimum/young	Age min	ka	Blaser, Patrick	BACON age modeling
49	Age, maximum/old	Age max	ka	Blaser, Patrick	BACON age modeling
50	AGE	Age	ka BP	Blaser, Patrick	BACON age modeling	Geocode
51	Comment	Comment		Blaser, Patrick		IRD event

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

4898 data points

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