Citation:

j.epsl.2009.12.030

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Abstract:

Paired radiocarbon measurements on haptophyte biomarkers (alkenones) and on co-occurring tests of planktic foraminifera (Neogloboquadrina dutertrei and Globogerinoides sacculifer) from late glacial to Holocene sediments at core locations ME0005-24JC, Y69-71P, and MC16 from the south-western and central Panama Basin indicate no significant addition of pre-aged alkenones by lateral advection. The strong temporal correspondence between alkenones, foraminifera and total organic carbon (TOC) also implies negligible contributions of aged terrigenous material. Considering controversial evidence for sediment redistribution in previous studies of these sites, our data imply that the laterally supplied material cannot stem from remobilization of substantially aged sediments. Transport, if any, requires syn-depositional nepheloid layer transport and redistribution of low-density or fine-grained components within decades of particle formation. Such rapid and local transport minimizes the potential for temporal decoupling of proxies residing in different grain-size fractions and thus facilitates comparison of various proxies for paleoceanographic reconstructions in this study area. Anomalously old foraminiferal tests from a glacial depth interval of core Y69-71P may result from episodic spillover of fast bottom currents across the Carnegie Ridge transporting foraminiferal sands towards the north.

Project(s):

Center for Marine Environmental Sciences (MARUM)

Coverage:

Median Latitude: 0.660567 * Median Longitude: -86.417210 * South-bound Latitude: 0.021700 * West-bound Longitude: -86.483330 * North-bound Latitude: 1.860000 * East-bound Longitude: -86.305000

Minimum DEPTH, sediment/rock: 0.015 m * Maximum DEPTH, sediment/rock: 3.480 m

Event(s):

MC16 * Latitude: 1.860000 * Longitude: -86.305000 * Elevation: -2767.0 m * Location: Panama Basin * Campaign: * Basis: Knorr * Method/Device: Gravity corer (GC)

ME0005A-24JC * Latitude: 0.021700 * Longitude: -86.463300 * Elevation: -2941.0 m * Location: South Pacific Ocean * Campaign: (NEMO) * Basis: Melville * Method/Device: Gravity corer (GC)

Y69-71P * Latitude: 0.100000 * Longitude: -86.483330 * Elevation: -2740.0 m * Location: South Pacific Ocean * Campaign: * Basis: Yaquina * Method/Device: Piston corer (PC)

Comment:

Depths Comment (Depth in cm) refer to foraminifera samples, if different from organic matter samples. Analytical uncertainties are given as 1 Sigma analytical errors.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event
2	DEPTH, sediment/rock	Depth sed	m			Geocode
3	Depth, top/min	Depth top	m	Kusch, Stephanie
4	Depth, bottom/max	Depth bot	m	Kusch, Stephanie
5	Depth comment	Depth comm		Kusch, Stephanie
6	Age, dated material	Dated material		Kusch, Stephanie		Foraminifera
7	Reference/source	Reference		Kusch, Stephanie		Foraminifera
8	Fraction modern carbon	F14C		Kusch, Stephanie	Age, 14C AMS	Foraminifera
9	Fraction modern carbon, standard deviation	F14C std dev	±	Kusch, Stephanie	Age, 14C AMS	Foraminifera
10	Age, dated	Age dated	ka	Kusch, Stephanie	Age, 14C AMS	Foraminifera
11	Age, dated standard deviation	Age dated std dev	±	Kusch, Stephanie	Age, 14C AMS	Foraminifera
12	Fraction modern carbon	F14C		Kusch, Stephanie	Age, 14C AMS	TOC
13	Fraction modern carbon, standard deviation	F14C std dev	±	Kusch, Stephanie	Age, 14C AMS	TOC
14	Age, dated	Age dated	ka	Kusch, Stephanie	Age, 14C AMS	TOC
15	Age, dated standard deviation	Age dated std dev	±	Kusch, Stephanie	Age, 14C AMS	TOC
16	Fraction modern carbon	F14C		Kusch, Stephanie	Age, 14C AMS	Alkenones
17	Fraction modern carbon, standard deviation	F14C std dev	±	Kusch, Stephanie	Age, 14C AMS	Alkenones
18	Age, dated	Age dated	ka	Kusch, Stephanie	Age, 14C AMS	Alkenones
19	Age, dated standard deviation	Age dated std dev	±	Kusch, Stephanie	Age, 14C AMS	Alkenones

License:

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

Size:

304 data points

Data

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

1 Event	2 Depth sed [m]	3 Depth top [m]	4 Depth bot [m]	5 Depth comm	6 Dated material (Foraminifera)	7 Reference (Foraminifera)	8 F14C (Foraminifera)	9 F14C std dev [±] (Foraminifera)	10 Age dated [ka] (Foraminifera)	11 Age dated std dev [±] (Foraminifera)	12 F14C (TOC)	13 F14C std dev [±] (TOC)	14 Age dated [ka] (TOC)	15 Age dated std dev [±] (TOC)	16 F14C (Alkenones)	17 F14C std dev [±] (Alkenones)	18 Age dated [ka] (Alkenones)	19 Age dated std dev [±] (Alkenones)
ME0005A-24JC	0.175	0.150	0.200		Neogloboquadrina dutertrei		0.667	0.002	3.255	0.030	0.685	0.003	3.040	0.035	0.664	0.008	3.290	0.095
ME0005A-24JC	0.175	0.150	0.200		Globogerinoides sacculifer		0.679	0.002	3.105	0.030
ME0005A-24JC	0.485	0.460	0.510		Neogloboquadrina dutertrei		0.413	0.002	7.100	0.040	0.413	0.002	7.100	0.045
ME0005A-24JC	0.785	0.760	0.810	81	Neogloboquadrina dutertrei	Data from Kienast et al. (2007)	0.325	0.002	9.040	0.040	0.326	0.002	9.000	0.040
ME0005A-24JC	2.290	2.265	2.315	230	Neogloboquadrina dutertrei	Data from Kienast et al. (2007)	0.177	0.001	13.900	0.035	0.176	0.001	13.950	0.065	0.182	0.004	13.650	0.150
ME0005A-24JC	2.875	2.850	2.900	291	Neogloboquadrina dutertrei	Data from Kienast et al. (2007)	0.142	0.002	15.700	0.085	0.138	0.001	15.900	0.075	0.140	0.002	15.800	0.140
ME0005A-24JC	3.480	3.450	3.510	351	Neogloboquadrina dutertrei	Data from Kienast et al. (2007)	0.106	0.001	18.050	0.065	0.111	0.001	17.650	0.075	0.106	0.002	18.000	0.160
Y69-71P	0.145	0.110	0.180		Neogloboquadrina dutertrei		0.668	0.002	3.240	0.025	0.653	0.002	3.420	0.030	0.412	0.017	7.120	0.330
Y69-71P	0.145	0.110	0.180		Globogerinoides sacculifer		0.725	0.002	2.590	0.025
Y69-71P	0.275	0.250	0.300		Neogloboquadrina dutertrei		0.467	0.002	6.110	0.030	0.487	0.002	5.780	0.040	0.400	0.014	7.350	0.270
Y69-71P	0.275	0.250	0.300		Globogerinoides sacculifer		0.486	0.004	5.790	0.070
Y69-71P	0.350	0.310	0.390								0.419	0.002	6.980	0.035
Y69-71P	0.500				Neogloboquadrina dutertrei	Data from Clark et al. (2004)	0.297	0.002	9.760	0.040
Y69-71P	0.535	0.510	0.560		Neogloboquadrina dutertrei		0.299	0.002	9.705	0.060	0.312	0.002	9.350	0.045	0.309	0.005	9.430	0.130
Y69-71P	0.850	0.810	0.890								0.238	0.002	11.550	0.060	0.218	0.007	12.200	0.250
Y69-71P	1.200	1.170	1.230	120	Neogloboquadrina dutertrei		0.160	0.001	14.700	0.065	0.168	0.002	14.350	0.080	0.157	0.005	14.900	0.240
Y69-71P	1.650	1.630	1.670								0.133	0.001	16.200	0.080	0.121	0.004	17.000	0.240
Y69-71P	1.800				Neogloboquadrina dutertrei	Data from Clark et al. (2004)	0.092	0.001	19.150	0.070
Y69-71P	1.855	1.830	1.880		Neogloboquadrina dutertrei		0.111	0.002	17.690	0.140	0.098	0.001	18.650	0.110	0.100	0.002	18.500	0.200
Y69-71P	2.555	2.530	2.580		Neogloboquadrina dutertrei		0.035	0.002	26.920	0.370	0.052	0.001	23.700	0.130	0.053	0.002	23.600	0.230
Y69-71P	2.600				Neogloboquadrina dutertrei	Data from Kienast et al. (2007)	0.030	0.001	28.000	0.190
MC16	0.020	0.000	0.040												0.798	0.008	1.810	0.085
MC16	0.015	0.010	0.020		Neogloboquadrina dutertrei		0.756	0.003	2.240	0.035	0.768	0.003	2.120	0.035
MC16	0.035	0.030	0.040		Neogloboquadrina dutertrei		0.808	0.003	1.715	0.030	0.764	0.003	2.160	0.030
MC16	0.115	0.110	0.120		Neogloboquadrina dutertrei		0.779	0.003	2.005	0.030	0.777	0.003	2.030	0.030	0.763	0.006	2.170	0.060
MC16	0.315	0.310	0.320		Neogloboquadrina dutertrei		0.346	0.002	8.530	0.050	0.368	0.002	8.040	0.045	0.376	0.004	7.860	0.080