Citation:

2010PA002011

Name: (Table 1) Age determination of ODP Hole 146-893A
Published: 2010
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

To better understand the deglacial upwelling pattern in the east Pacific, we have made radiocarbon (14C) measurements on benthic foraminifera and macrofauna from a 3.5 m long interval in ODP Core 893A from Santa Barbara Basin, California, representing early deglaciation. This work serves to investigate the source of apparent disagreement between radiocarbon data sets from Leibnitz Laboratory, Kiel University (Kiel) and Carbon Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory (LLNL). These data sets are based on measurements of mixed benthic and mixed planktonic foraminifera. Interlaboratory 14C results are similar for the planktonic foraminiferal analyses; however, Kiel measurements on mixed benthic foraminifera are much older than mixed benthic measurements from equivalent depths measured at LLNL. Our new results show distinct 14C differences between taxa, with Pyrgo sp. giving ages consistently older than Kiel measurements on mixed benthic taxa, while ages for Nonionellina sp., Buliminella sp., Uvigerina sp., and benthic macrofauna were much younger, even younger than the LLNL mixed benthic data. The new data supports benthic-planktonic age offsets of no more than 300 years, indicating that bottom waters within the basin remained significantly younger during early deglaciation than some previous results have suggested and are thus consistent with sedimentary and faunal evidence for well-oxygenated conditions.

Related to:

Behl, Richard J (1995): Sedimentary facies and sedimentology of the Late Quaternary Santa Barbara Basin, Site 893. In: Kennett, JP; Baldauf, JG; Lyle, M (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 146(2), 295-308, https://doi.org/10.2973/odp.proc.sr.146-2.276.1995

Hendy, Ingrid L; Kennett, James P; Roark, E Brendan; Ingram, B Lynn (2002): Apparent synchroneity of submillennial scale climate events between Greenland and Santa Barbara Basin, California from30-10 ka. Quaternary Science Reviews, 21(10), 1167-1184, https://doi.org/10.1016/S0277-3791(01)00138-X

Ingram, B Lynn; Kennett, James P (1995): Radiocarbon chronology and planktonic-benthic foraminiferal 14C age differences in Santa Barbara Basin sediments, Hole 893A. In: Kennett, JP; Baldauf, JG; Lyle, M (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 146(2), 19-27, https://doi.org/10.2973/odp.proc.sr.146-2.278.1995

Merrill, Russell B; Beck, J Warren (1995): The ODP Color Digital Imaging System: Color Logs of Quaternary Sediments from the Santa Barbara Basin, Site 893. In: Kennett, JP; Baldauf, JG; Lyle, M (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 146(2), 45-59, https://doi.org/10.2973/odp.proc.sr.146-2.285.1995

Sarnthein, Michael; Grootes, Pieter Meiert; Kennett, James P; Nadeau, Marie-Josée (2007): 14C reservoir ages show deglacial changes in ocean currents and carbon cycle. In: Andreas Schmittner, John Chiang & Sidney Hemmings (eds.) Ocean Circulation: Mechanisms and Impacts. Geophysical Monograph Series, American Geophysical Union, 392 pages, ISBN: 978-0-87590-438-2, 173, 175-196, https://doi.org/10.1029/173GM13

Project(s):

Ocean Drilling Program (ODP)

Coverage:

Latitude: 34.287500 * Longitude: -120.036000

Date/Time Start: 1992-11-20T10:30:00 * Date/Time End: 1992-11-20T23:40:00

Minimum DEPTH, sediment/rock: 24.18 m * Maximum DEPTH, sediment/rock: 32.99 m

Event(s):

146-893A * Latitude: 34.287500 * Longitude: -120.036000 * Date/Time Start: 1992-11-20T10:30:00 * Date/Time End: 1992-11-20T23:40:00 * Elevation: -588.0 m * Penetration: 196.5 m * Recovery: 204.91 m * Location: North Pacific Ocean * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 21 core; 196.5 m cored; 0 m drilled; 104.3 % recovery

Comment:

DEPTH, sediment/rock [m] is given in mbsf. This dataset shows data from Hendy et al., (2002) and Sarnthein et al., (2007), plus new 14C data from this study. Lawrence Livermore National Laboratory 14C results originally published in Ingram and Kennett [1995] were recalculated in Hendy et al. (2002) to properly correct for the presence of 14C-dead carbon as well as modern carbon in 14C small-sample processing backgrounds. All data have been placed on the Hendy et al. (2002) depth scale for ODP 893A: void-corrected depths within each ODP core section were calculated based on Merrill and Beck (1995), and these are keyed to the sectiontop depths of Behl (1995). We have followed Hendy et al. (2002) in correcting the Behl (1995) depths for 1.5 m and 0.75 m of missing core at the 1H-2H and 2H-3H section boundaries, respectively, and in our use of 27.7 m for the top of 4H1 rather than the adjusted Behl (1995) depth of 25.8 + 2.25 m (see the 4H1 depths shown in Hendy et al. (2002, Table 3)).

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m			Geocode
2	Sample code/label	Sample label		Magana, Alexandra L	DSDP/ODP/IODP sample designation
3	Age, dated material	Dated material		Magana, Alexandra L
4	Laboratory	Lab		Magana, Alexandra L
5	Age, dated	Age dated	ka	Magana, Alexandra L	Age, 14C AMS
6	Age, dated standard deviation	Age dated std dev	±	Magana, Alexandra L	Age, 14C AMS
7	Foraminifera, benthic δ13C	Foram benth δ13C	‰ PDB	Magana, Alexandra L		#1
8	Foraminifera, benthic δ13C	Foram benth δ13C	‰ PDB	Magana, Alexandra L		#2
9	Foraminifera, benthic δ13C	Foram benth δ13C	‰ PDB	Magana, Alexandra L		#3
10	Foraminifera, benthic δ13C	Foram benth δ13C	‰ PDB	Magana, Alexandra L		#4

License:

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

Size:

600 data points

Data

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

1 Depth sed [m]	2 Sample label (DSDP/ODP/IODP sample designation)	3 Dated material	4 Lab	5 Age dated [ka] (Age, 14C AMS)	6 Age dated std dev [±] (Age, 14C AMS)	7 Foram benth δ13C [‰ PDB] (#1)	8 Foram benth δ13C [‰ PDB] (#2)	9 Foram benth δ13C [‰ PDB] (#3)	10 Foram benth δ13C [‰ PDB] (#4)
24.18	146-893A-3H-5,9-12	Mixed benthic taxa	Lawrence Livermore National Laboratory	12.760	0.080
24.18	146-893A-3H-5,9-12	Mixed planktonic taxa	Lawrence Livermore National Laboratory	12.340	0.070
24.76	146-893A-3H-5,67-69	Mixed planktonic taxa	Leibnitz Laboratory, Kiel University	12.630	0.060
25.33	146-893A-3H-5,124-126	Mixed planktonic taxa	Leibnitz Laboratory, Kiel University	12.940	0.065
25.54	146-893A-3H-5,145-147	Mixed planktonic taxa	Leibnitz Laboratory, Kiel University	12.960	0.075
25.81	146-893A-3H-6,144-146	Mixed benthic taxa	Leibnitz Laboratory, Kiel University	13.890	0.150
26.36	146-893A-3H-6,96-99	Mixed benthic taxa	Lawrence Livermore National Laboratory	13.520	0.090
26.36	146-893A-3H-6,96-99	Mixed planktonic taxa	Lawrence Livermore National Laboratory	12.990	0.170
26.42	146-893A-3H-6,105-107	Mixed benthic taxa	Leibnitz Laboratory, Kiel University	13.620	0.070
26.80	146-893A-3H-6,140-142	Pyramidellidae or Turridae	University of California, Irvine	13.615	0.030
26.81	146-893A-3H-6,144-146	Mixed planktonic taxa	Leibnitz Laboratory, Kiel University	13.400	0.120
27.37	146-893A-3H-7,50-52	Mixed benthic taxa	Leibnitz Laboratory, Kiel University	14.900	0.160
27.37	146-893A-3H-7,50-52	Mixed planktonic taxa	Leibnitz Laboratory, Kiel University	13.960	0.150
27.47	146-893A-3H-7,60-62	Mixed benthic taxa	Leibnitz Laboratory, Kiel University	14.740	0.130
27.47	146-893A-3H-7,60-62	Mixed planktonic taxa	Leibnitz Laboratory, Kiel University	13.770	0.120
27.65	146-893A-3H-7,79-81	Mixed benthic taxa	Lawrence Livermore National Laboratory	14.030	0.160
27.65	146-893A-3H-7,79-81	Mixed planktonic taxa	Lawrence Livermore National Laboratory	13.800	0.280
27.80	146-893A-4H-1,8-11	Mixed benthic taxa	Lawrence Livermore National Laboratory	14.980	0.160
27.80	146-893A-4H-1,8-11	Mixed planktonic taxa	Lawrence Livermore National Laboratory	14.490	0.130
27.92	146-893A-4H-1,21-23	Mixed benthic taxa	Leibnitz Laboratory, Kiel University	15.500	0.110
27.92	146-893A-4H-1,21-23	Mixed planktonic taxa	Leibnitz Laboratory, Kiel University	14.730	0.100
27.98	146-893A-4H-1,26-28	Pyrgo sp.	University of California, Irvine	17.140	0.280
28.03	146-893A-4H-1,32-34	Mixed benthic taxa	Lawrence Livermore National Laboratory	15.240	0.220
28.03	146-893A-4H-1,32-34	Mixed planktonic taxa	Lawrence Livermore National Laboratory	14.690	0.140
28.12	146-893A-4H-1,40-42	Pyrgo sp.	University of California, Irvine	17.640	0.420	-4.5
28.13	146-893A-4H-1,42-44	Mixed benthic taxa	Leibnitz Laboratory, Kiel University	16.130	0.080
28.13	146-893A-4H-1,42-44	Mixed planktonic taxa	Leibnitz Laboratory, Kiel University	14.820	0.140
28.19	146-893A-4H-1,47-49	Pyrgo sp.	University of California, Irvine	16.310	0.060	-6.6
28.44	146-893A-4H-1,93-95	Mixed benthic taxa	Leibnitz Laboratory, Kiel University	16.360	0.080
28.44	146-893A-4H-1,93-95	Mixed planktonic taxa	Leibnitz Laboratory, Kiel University	14.890	0.100
28.45	146-893A-4H-1,96-98	Mixed planktonic taxa	University of California, Irvine	14.970	0.060
28.45	146-893A-4H-1,96-98	Nonionellina sp.	University of California, Irvine	14.950	0.140	-4.6
28.45	146-893A-4H-1,96-98	Pyrgo sp.	University of California, Irvine	16.740	0.070	-5.9	-8.2
28.55	146-893A-4H-1,105-107	Mixed benthic taxa	Lawrence Livermore National Laboratory	15.510	0.140
28.55	146-893A-4H-1,105-107	Mixed planktonic taxa	Lawrence Livermore National Laboratory	14.740	0.180
28.59	146-893A-4H-1,110-112	Pyrgo sp.	University of California, Irvine	17.090	0.050	-6.2
28.66	146-893A-4H-1,117-119	Nonionellina sp.	University of California, Irvine	15.210	0.180	-1.9
28.66	146-893A-4H-1,117-119	Pyrgo sp.	University of California, Irvine	17.375	0.045	-7.0
28.73	146-893A-4H-1,124-126	Nonionellina sp.	University of California, Irvine	14.990	0.120	-1.7
28.73	146-893A-4H-1,124-126	Pyrgo sp.	University of California, Irvine	17.030	0.150
28.76	146-893A-4H-1,126-128	Mixed benthic taxa	Leibnitz Laboratory, Kiel University	16.570	0.080
28.76	146-893A-4H-1,126-128	Mixed planktonic taxa	Leibnitz Laboratory, Kiel University	14.550	0.130
28.80	146-893A-4H-1,131-133	Cadulus californicus	University of California, Irvine	14.890	0.060
28.80	146-893A-4H-1,131-133	Gastropod	University of California, Irvine	15.100	0.030
28.94	146-893A-4H-1,145-147	Nonionellina sp.	University of California, Irvine	15.000	0.050	-1.4
28.94	146-893A-4H-1,145-147	Pyrgo sp.	University of California, Irvine	17.390	0.060	-4.7	-5.0	-5.3	-5.8
29.38	146-893A-4H-2,5-7	Mixed benthic taxa	Lawrence Livermore National Laboratory	15.370	0.450
29.38	146-893A-4H-2,5-7	Mixed planktonic taxa	Lawrence Livermore National Laboratory	15.040	0.230
29.46	146-893A-4H-2,12-14	Buliminella sp.	University of California, Irvine	16.300	0.930
29.46	146-893A-4H-2,12-14	Nonionellina sp.	University of California, Irvine	15.135	0.050	-1.6
29.46	146-893A-4H-2,12-14	Cardiidae or Carditidae	University of California, Irvine	15.200	0.030
29.46	146-893A-4H-2,12-14	Pyrgo sp.	University of California, Irvine	17.185	0.050
29.47	146-893A-4H-2,14-16	Mixed benthic taxa	Leibnitz Laboratory, Kiel University	16.450	0.080
29.47	146-893A-4H-2,14-16	Mixed planktonic taxa	Leibnitz Laboratory, Kiel University	15.010	0.110
29.47	146-893A-4H-2,14-16	Pyrgo sp.				-5.6
29.53	146-893A-4H-2,19-21	Pyrgo sp.	University of California, Irvine	17.010	0.140	-5.1
29.63	146-893A-4H-2,33-35	Pyrgo sp.	University of California, Irvine	17.350	0.060	-5.1
29.78	146-893A-4H-2,47-49	Pyrgo sp.	University of California, Irvine	17.295	0.050	-4.7	-6.1	-7.1	-7.1
29.78	146-893A-4H-2,47-49	Mixed benthic taxa	Leibnitz Laboratory, Kiel University	16.820	0.080
29.78	146-893A-4H-2,47-49	Mixed planktonic taxa	Leibnitz Laboratory, Kiel University	14.670	0.130
29.78	146-893A-4H-2,47-49	Cardiidae or Carditidae	University of California, Irvine	15.205	0.030
29.78	146-893A-4H-2,47-49	Cardiidae or Carditidae	University of California, Irvine	15.195	0.025
29.78	146-893A-4H-2,47-49	Boreotrophon	University of California, Irvine	15.215	0.025
29.88	146-893A-4H-2,55-57	Mixed benthic taxa	Lawrence Livermore National Laboratory	15.820	0.150
29.88	146-893A-4H-2,55-57	Mixed planktonic taxa	Lawrence Livermore National Laboratory	14.940	0.160
29.96	146-893A-4H-2,63-65	Mixed benthic taxa	Leibnitz Laboratory, Kiel University	16.900	0.080
29.96	146-893A-4H-2,63-65	Mixed planktonic taxa	Leibnitz Laboratory, Kiel University	15.210	0.140
30.06	146-893A-4H-2,73-75	Mixed benthic taxa	Leibnitz Laboratory, Kiel University	16.700	0.080
30.06	146-893A-4H-2,73-75	Mixed planktonic taxa	Leibnitz Laboratory, Kiel University	15.420	0.100
30.18	146-893A-4H-2,89-91	Nonionellina sp.	University of California, Irvine	15.510	0.230	-1.4
30.18	146-893A-4H-2,89-91	Pyrgo sp.	University of California, Irvine	17.340	0.090	-5.8
30.25	146-893A-4H-2,96-98	Cadulus californicus	University of California, Irvine	15.455	0.025
30.32	146-893A-4H-2,103-105	Mixed planktonic taxa	University of California, Irvine	15.280	0.060
30.32	146-893A-4H-2,103-105	Buliminella sp.	University of California, Irvine	15.410	0.210
30.32	146-893A-4H-2,103-105	Nonionellina sp.	University of California, Irvine	15.470	0.170
30.32	146-893A-4H-2,103-105	Pyrgo sp.	University of California, Irvine	17.280	0.060	-5.1	-6.9	-7.9	-6.3
30.39	146-893A-4H-2,110-112	Buliminella sp.	University of California, Irvine	15.470	0.450
30.39	146-893A-4H-2,110-112	Nonionellina sp.	University of California, Irvine	15.680	0.170	-1.5
30.39	146-893A-4H-2,110-112	Uvigerina sp.	University of California, Irvine	15.780	0.340
30.39	146-893A-4H-2,110-112	Pyrgo sp.	University of California, Irvine	17.550	0.070	-4.1
30.46	146-893A-4H-2,117-119	Buliminella sp.	University of California, Irvine	15.800	0.470	-2.7
30.46	146-893A-4H-2,117-119	Nonionellina sp.	University of California, Irvine	15.800	0.290	-2.8
30.46	146-893A-4H-2,117-119	Pyrgo sp.	University of California, Irvine	17.500	0.160	-5.9
30.62	146-893A-4H-2,138-140	Mixed planktonic taxa	University of California, Irvine	14.320	0.210
30.62	146-893A-4H-2,138-140	Pyrgo sp.	University of California, Irvine	17.440	0.080	-6.1
30.78	146-893A-4H-2,145-147	Mixed benthic taxa	Leibnitz Laboratory, Kiel University	16.620	0.100
30.78	146-893A-4H-2,145-147	Mixed planktonic taxa	Leibnitz Laboratory, Kiel University	15.330	0.090
30.98	146-893A-4H-3,21-23	Cardiidae or Carditidae	University of California, Irvine	15.790	0.070
31.01	146-893A-4H-3,24-26	Buliminella sp.	University of California, Irvine	16.580	0.560
31.05	146-893A-4H-3,28-30	Pyrgo sp.	University of California, Irvine	17.660	0.130
31.20	146-893A-4H-3,42-44	Mixed benthic taxa	Leibnitz Laboratory, Kiel University	16.475	0.110
31.20	146-893A-4H-3,42-44	Mixed planktonic taxa	Leibnitz Laboratory, Kiel University	15.740	0.130
31.35	146-893A-4H-3,57-60	Mixed benthic taxa	Lawrence Livermore National Laboratory	16.080	0.220
31.35	146-893A-4H-3,57-60	Mixed planktonic taxa	Lawrence Livermore National Laboratory	15.550	0.140
31.40	146-893A-4H-3,63-65	Mixed planktonic taxa	University of California, Irvine	15.750	0.130
31.40	146-893A-4H-3,63-65	Nonionellina sp.	University of California, Irvine	16.180	0.240	-1.4
31.40	146-893A-4H-3,63-65	Pyrgo sp.	University of California, Irvine	17.700	0.420
31.52	146-893A-4H-3,77-79	Uvigerina sp.	University of California, Irvine	16.070	0.070	-0.8
31.52	146-893A-4H-3,77-79	Cardiidae or Carditidae	University of California, Irvine	15.800	0.090
31.59	146-893A-4H-3,84-86	Uvigerina sp.	University of California, Irvine	16.110	0.060	-1.0
31.69	146-893A-4H-3,91-93	Mixed benthic taxa	Leibnitz Laboratory, Kiel University	16.340	0.100
31.69	146-893A-4H-3,91-93	Mixed planktonic taxa	Leibnitz Laboratory, Kiel University	15.780	0.105
31.78	146-893A-4H-3,106-108	Mixed planktonic taxa	University of California, Irvine	15.830	0.140
31.78	146-893A-4H-3,106-108	Uvigerina sp.	University of California, Irvine	16.130	0.060
30.91	146-893A-4H-3,14-16	Mixed planktonic taxa	University of California, Irvine	15.450	0.120
30.91	146-893A-4H-3,14-16	Pyrgo sp.	University of California, Irvine	17.390	0.290	-5.6
32.24	146-893A-4H-4,3-5	Mixed planktonic taxa	Lawrence Livermore National Laboratory	16.080	0.190
32.45	146-893A-4H-4,24-26	Uvigerina sp.	University of California, Irvine	16.680	0.420
32.52	146-893A-4H-4,31-33	Cadulus californicus	University of California, Irvine	16.685	0.030
32.59	146-893A-4H-4,38-40	Boreotrophon	University of California, Irvine	16.570	0.040
32.91	146-893A-4H-4,73-75	Uvigerina sp.		0.000	0.000	-1.0
32.99	146-893A-4H-4,90-93	Mixed benthic taxa	Lawrence Livermore National Laboratory	17.120	0.090
32.99	146-893A-4H-4,90-93	Mixed planktonic taxa	Lawrence Livermore National Laboratory	16.630	0.190