Citation:

2003PA000949

Name: (Table 1) AMS-14C ages determined in pairs of spreiten and directly adjacent host sediment of cores M39029-4 and M29039-8
Published: 2004
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

he downward transport of surface sediment deep into the sediment column by the Zoophycos-producing animal leads not only to large age differences between the Zoophycos structure and surrounding host sediment but also to large differences in age between different foraminifer species found inside the trace fossil. In the late Quaternary material from the southwestern Portuguese continental slope examined in this study, age differences of up to 2590 years were observed between the planktic foraminifer species Globigerinoides ruber and Globigerina bulloides. These differences are caused by the mixing of surface and host material with different abundances of the two species. If there are differences in the abundance of the two species at the surface and/or in the host sediment, plenty of relatively young foraminifers may be mixed with few relatively old ones, or vice versa. The age differences between species caused by the combination of deep-reaching bioturbation by the Zoophycos producer and abundance variations may be considerably larger than the age differences caused by the homogenizing bioturbation in the mixed layer.

Coverage:

Median Latitude: 36.041667 * Median Longitude: -8.231667 * South-bound Latitude: 36.041667 * West-bound Longitude: -8.233333 * North-bound Latitude: 36.041667 * East-bound Longitude: -8.230000

Date/Time Start: 1997-04-30T18:39:00 * Date/Time End: 1997-04-30T22:54:00

Minimum DEPTH, sediment/rock: 0.310 m * Maximum DEPTH, sediment/rock: 1.185 m

Event(s):

M39/1_29-4 (M39029-4) * Latitude: 36.041667 * Longitude: -8.233333 * Date/Time: 1997-04-30T18:39:00 * Elevation: -1918.0 m * Recovery: 3.055 m * Campaign: * Basis: * Method/Device: Gravity corer (Russian type) (RGC) * Comment: russian core device

M39/1_29-8 (M39029-8) * Latitude: 36.041667 * Longitude: -8.230000 * Date/Time: 1997-04-30T22:54:00 * Elevation: -1916.0 m * Recovery: 5.21 m * Campaign: * Basis: * Method/Device: Gravity corer (Kiel type) (SL) * Comment: kiel core device

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event
2	Host	Host		Löwemark, Ludvig
3	Laboratory code/label	Lab label		Löwemark, Ludvig
4	Corallinaceae	Corallinaceae	g/m²	Löwemark, Ludvig		Carbon
5	Carbon-14, modern	pMC	%	Löwemark, Ludvig		13C corrected
6	Carbon-14, modern, error	pMC e	±	Löwemark, Ludvig		13C corrected
7	DEPTH, sediment/rock	Depth sed	m			Geocode
8	Comment	Comment		Löwemark, Ludvig
9	Age, dated material	Dated material		Löwemark, Ludvig
10	Age, dated	Age dated	ka	Löwemark, Ludvig	Age, 14C AMS
11	Age, dated, error to older	Age e +	ka +	Löwemark, Ludvig	Age, 14C AMS
12	Age, dated, error to younger	Age e -	ka -	Löwemark, Ludvig	Age, 14C AMS
13	Age, difference	Age diff	ka	Löwemark, Ludvig		between species
14	Age, difference error	Age diff e	±	Löwemark, Ludvig		between species
15	Comment 2 (continued)	Comm 2		Löwemark, Ludvig		age difference, between species
16	Age, difference	Age diff	ka	Löwemark, Ludvig		host spreiten
17	Age, difference error	Age diff e	±	Löwemark, Ludvig		host spreiten
18	Age, dated material	Dated material		Löwemark, Ludvig		host spreiten, measured species

License:

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

Size:

330 data points

Data

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

1 Event	2 Host	3 Lab label	4 Corallinaceae [g/m²] (Carbon)	5 pMC [%] (13C corrected)	6 pMC e [±] (13C corrected)	7 Depth sed [m]	8 Comment	9 Dated material	10 Age dated [ka]	11 Age e + [ka +]	12 Age e - [ka -]	13 Age diff [ka] (between species)	14 Age diff e [±] (between species)	15 Comm 2 (age difference, between species)	16 Age diff [ka] (host spreiten)	17 Age diff e [±] (host spreiten)	18 Dated material (host spreiten, measured species)
M39/1_29-4	1	KIA10954	1.10	53.90	0.24	0.310	host	Globigerinoides ruber	4.965	0.035	0.035			paleo seafloor
M39/1_29-4		KIA10955	0.90	48.23	0.22	0.770	spreiten	Globigerinoides ruber	5.855	0.035	0.035			highest spreite
M39/1_29-4	A	KIA9312	0.70	28.64	0.18	0.880	host	Globigerina bulloides	10.045	0.050	0.050	0.075	0.08		2.360	0.080	Globigerinoides ruber
M39/1_29-4		KIA9313	0.90	28.92	0.23	0.880	host	Globigerinoides ruber	9.970	0.060	0.060
M39/1_29-4		KIA9311	1.00	38.77	0.25	0.900	spreiten	Globigerinoides ruber	7.610	0.050	0.050
M39/1_29-4	B	KIA9315	0.70	25.12	0.20	1.020	host	Globigerina bulloides	11.100	0.070	0.070				1.220	0.090	Globigerina bulloides
M39/1_29-4		KIA9314	0.80	29.23	0.20	1.040	spreiten	Globigerina bulloides	9.880	0.055	0.055
M39/1_29-4	C	KIA10227	1.10	28.52	0.27	1.160	spreiten	Globigerinoides ruber	10.080	0.080	0.070				1.750	0.100	Globigerinoides ruber
M39/1_29-4		KIA10228	0.54	22.00	0.19	1.185	host	Globigerina bulloides	12.160	0.070	0.070	0.330	0.10
M39/1_29-4		KIA10229	0.80	22.94	0.19	1.185	host	Globigerinoides ruber	11.830	0.070	0.070
M39/1_29-8	D	KIA10205	0.70	34.94	0.25	0.525	host	Globigerina bulloides	8.450	0.060	0.060	0.095	0.08		2.525	0.075	Globigerina bulloides
M39/1_29-8		KIA10206	0.90	34.53	0.23	0.525	host	Globigerinoides ruber	8.545	0.055	0.055
M39/1_29-8		KIA10203	0.28	47.84	0.28	0.540	spreiten	Globigerina bulloides	5.925	0.045	0.045	0.485	0.06		3.105	0.070	Globigerinoides ruber
M39/1_29-8		KIA10204	1.20	50.82	0.27	0.540	spreiten	Globigerinoides ruber	5.440	0.040	0.040
M39/1_29-8	E	KIA10211	0.70	26.07	0.22	0.780	host	Globigerina bulloides	10.800	0.070	0.070	0.380	0.09		1.110	0.100	Globigerina bulloides
M39/1_29-8		KIA10212	0.30	27.34	0.21	0.780	host	Globigerinoides ruber	10.420	0.060	0.060
M39/1_29-8		KIA10207	0.50	29.94	0.25	0.790	spreiten	Globigerina bulloides	9.690	0.070	0.070	2.590	0.09		3.320	0.080	Globigerinoides ruber
M39/1_29-8		KIA10208	0.90	41.31	0.25	0.790	spreiten	Globigerinoides ruber	7.100	0.050	0.050
M39/1_29-8	F	KIA10209	0.90	29.60	0.22	0.810	spreiten	Globigerina bulloides	9.780	0.060	0.060	1.790	0.09		1.340	0.100	Globigerina bulloides
M39/1_29-8		KIA10210	0.70	36.99	0.31	0.810	spreiten	Globigerinoides ruber	7.990	0.070	0.070
M39/1_29-8		KIA10213	1.10	25.04	0.25	0.825	host	Globigerina bulloides	11.120	0.080	0.080	0.350	0.11		2.780	0.110	Globigerinoides ruber
M39/1_29-8		KIA10214	0.20	26.17	0.27	0.825	host	Globigerinoides ruber	10.770	0.080	0.080
M39/1_29-8	G	KIA10215	0.20	26.93	0.24	0.905	spreiten	Globigerina bulloides	10.540	0.070	0.070	0.975	0.09		1.270	0.100	Globigerina bulloides
M39/1_29-8		KIA10216	0.80	30.40	0.21	0.905	spreiten	Globigerinoides ruber	9.565	0.055	0.055
M39/1_29-8		KIA10223	0.70	22.99	0.19	0.940	host	Globigerina bulloides	11.810	0.070	0.070	0.090	0.10		2.155	0.090	Globigerinoides ruber
M39/1_29-8		KIA10224	0.30	23.24	0.19	0.940	host	Globigerinoides ruber	11.720	0.070	0.070
M39/1_29-8	H	KIA10221	0.90	22.16	0.19	1.050	spreiten	Globigerina bulloides	12.110	0.070	0.070	1.500	0.11
M39/1_29-8		KIA10222	0.20	26.68	0.25	1.050	spreiten	Globigerinoides ruber	10.610	0.080	0.080				1.220	0.110	Globigerina bulloides
M39/1_29-8		KIA10225	1.00	19.02	0.18	1.070	host	Globigerina bulloides	13.330	0.080	0.080