Citation:

PANGAEA.527933, Supplement to: Mangini, A (1978): Thorium and uranium isotope analyses on "Meteor" core 12310, NW African Continental Rise. Meteor Forschungsergebnisse, Deutsche Forschungsgemeinschaft, Reihe C Geologie und Geophysik, Gebrüder Bornträger, Berlin, Stuttgart, C29, 1-5

Name: Thorium and Uranium analyses of sediment core GIK12310-4, NW African continental margin (Table 1,2)
Creator: Augusto Mangini
Published: 1978
License: https://creativecommons.org/licenses/by/3.0/

Always quote citation above when using data! You can download the citation in several formats below.

RIS Citation BibTeX Citation Text Citation Facebook TwitterShow Map Google Earth

Abstract:

The Th content of the sediment samples from "Meteor" core GIK12310-4 (3080 m water depth, off NW Africa) on a carbonate-free basis lies around the average of 12.4 ppm and is similar to the average content of the earth crust. On the contrary, uranium was found to be up to 3.5-fold enriched in the core section between 60 and 330 cm (within the Wuerm Glacial) where reducing conditions occur, due to deposition of authigenic uranium (9 µg/cm**2 1000 yrs.). The authigenic uranium content is correlated to the organic matter content (U/Corg ratio = 6 * 10**4). On the basis of the uranium content of the oxidized section uranium was split into a detritic and an authigenic component and the amount of supported ionium was calculated. From the profile of the specific Io-cxcess activity (= Io-total - Io-supported) with depth, average sedimentation rates of 3.3 ± 0.6 cm/1000 yrs. for the warmer stages and of 5 ± 1 cm/l000 yrs. for the cooler periods were estimated.

Coverage:

Latitude: 23.498333 * Longitude: -18.716667

Date/Time Start: 1971-11-02T00:00:00 * Date/Time End: 1971-11-02T00:00:00

Minimum DEPTH, sediment/rock: 0.030 m * Maximum DEPTH, sediment/rock: 5.450 m

Event(s):

GIK12310-4 * Latitude: 23.498333 * Longitude: -18.716667 * Date/Time: 1971-11-02T00:00:00 * Elevation: -3080.0 m * Recovery: 5.57 m * Location: East Atlantic * Campaign: * Basis: Meteor (1964) * Method/Device: Kasten corer (KAL)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	DEPTH, sediment/rock	Depth sed	m		Geocode
2	Depth, top/min	Depth top	m	Mangini, Augusto
3	Depth, bottom/max	Depth bot	m	Mangini, Augusto
4	Calcium carbonate	CaCO3	%	Mangini, Augusto
5	Thorium	Th	mg/kg	Mangini, Augusto
6	Thorium, standard deviation	Th std dev	±	Mangini, Augusto
7	Uranium	U	mg/kg	Mangini, Augusto
8	Uranium	U	mg/kg	Mangini, Augusto	Detritic
9	Uranium	U	mg/kg	Mangini, Augusto	Authigenic
10	Uranium, standard deviation	U std dev	±	Mangini, Augusto
11	Uranium-234/Uranium-238 activity ratio	(234U/238U)		Mangini, Augusto
12	Uranium-234/Uranium-238 activity ratio, standard deviation	(234U/238U) std dev	±	Mangini, Augusto
13	Thorium-230	230Th	dpm/g	Mangini, Augusto
14	Protactinium-231	231Pa	dpm/g	Mangini, Augusto
15	Protactinium, standard deviation	Pa std dev	±	Mangini, Augusto
16	Thorium-230 excess	230Th xs	dpm/g	Mangini, Augusto
17	Thorium-230 excess, standard deviation	230Th xs std dev	±	Mangini, Augusto
18	Protactinium-231 excess	231Pa xs	dpm/g	Mangini, Augusto
19	Protactinium-231 excess, standard deviation	231Pa xs std dev	±	Mangini, Augusto

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

237 data points

Download Data

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

View dataset as HTML