Citation:

2000PA000598

Name: (Table 2) Trace metal ratios of various benthic foraminifera shells
Published: 2002
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

Benthic foraminiferal d13C and Cd/Ca studies suggest that deep Atlantic circulation during the Last Glacial Maximum was very different from today, with high-nutrient (low d13C, high Cd) deep Southern Ocean Water (SOW) penetrating far into the North Atlantic. However, if some glacial d13C values are biased by productivity artifacts and/or air-sea exchange processes, then the existing d13C data may be consistent with the continual dominance of North Atlantic Deep Water (NADW). Cibicidoides wuellerstorfi Cd/Ca results presented here indicate that the glacial North Atlantic was strongly enriched in dissolved Cd below ~2500 m depth. If NADW formation was still vigorous relative to SOW formation, these data could be explained by either increased preformed nutrient levels in the high-latitude North Atlantic or by increased organic matter remineralization within lower NADW. High glacial Zn/Ca values in the same samples, however, are best explained by a substantially increased mixing with Zn-rich SOW. The cause was most likely a partial replacement of NADW by less dense Glacial North Atlantic Intermediate Water. This reorganization also lowered deep North Atlantic [CO3]2- concentrations by perhaps 10 to 15 µmol/kg.

Project(s):

Ocean Drilling Program (ODP)

Coverage:

Median Latitude: 51.129326 * Median Longitude: -24.486919 * South-bound Latitude: 41.430000 * West-bound Longitude: -32.510000 * North-bound Latitude: 61.183000 * East-bound Longitude: -14.702267

Date/Time Start: 1970-10-01T00:00:00 * Date/Time End: 1995-07-11T00:00:00

Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 4.315 m

Event(s):

162-980 * Latitude: 55.484933 * Longitude: -14.702267 * Date/Time Start: 1995-07-10T00:00:00 * Date/Time End: 1995-07-11T00:00:00 * Elevation: -2180.0 m * Penetration: 353.7 m * Recovery: 366.7 m * Location: South Atlantic Ocean * Campaign: * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 39 cores; 353.7 m cored; 0 m drilled; 103.7% recovery

CHN82-04 * Latitude: 41.430000 * Longitude: -32.510000 * Elevation: -3427.0 m * Campaign: * Basis: Jean Charcot

CHN82-11 * Latitude: 42.230000 * Longitude: -31.480000 * Elevation: -3209.0 m * Campaign: * Basis: Jean Charcot

Comment:

C. kullenbergi and C. pachyderma Zn/Ca values may all be contaminated, or these species may have very high Zn partition coefficients.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	Event label	Event
2	Latitude of event	Latitude
3	Longitude of event	Longitude
4	Elevation of event	Elevation	m
5	DEPTH, sediment/rock	Depth sed	m		Geocode
6	Depth, top/min	Depth top	m	Marchitto, Thomas M
7	Depth, bottom/max	Depth bot	m	Marchitto, Thomas M
8	Epoch	Epoch		Marchitto, Thomas M
9	Species	Species		Marchitto, Thomas M
10	Calcium	Ca	mmol/l	Marchitto, Thomas M
11	Zinc/Calcium ratio	Zn/Ca	µmol/mol	Marchitto, Thomas M
12	Cadmium/Calcium ratio	Cd/Ca	µmol/mol	Marchitto, Thomas M
13	Manganese/Calcium ratio	Mn/Ca	mmol/mol	Marchitto, Thomas M
14	Comment	Comment		Marchitto, Thomas M

License:

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

Size:

445 data points

Data

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

1 Event	2 Latitude	3 Longitude	4 Elevation [m]	5 Depth sed [m]	6 Depth top [m]	7 Depth bot [m]	8 Epoch	9 Species	10 Ca [mmol/l]	11 Zn/Ca [µmol/mol]	12 Cd/Ca [µmol/mol]	13 Mn/Ca [mmol/mol]	14 Comment
V29-193	55.4000	-18.7300	-1326	0.075	0.00	0.15	Holocene	Cibicidoides wuellerstorfi	28.60	2.08	0.068	0.0500
V29-193	55.4000	-18.7300	-1326	0.625	0.60	0.65	LGM	Cibicidoides wuellerstorfi	24.07	1.40	0.040	0.0686
V29-204	61.1830	-23.0200	-1849	0.110	0.10	0.12	Holocene	Cibicidoides wuellerstorfi	7.56		0.037	0.0303
V29-204	61.1830	-23.0200	-1849	0.175	0.15	0.20	Holocene	Cibicidoides wuellerstorfi	4.69	1.22	0.018	0.0669
V29-204	61.1830	-23.0200	-1849	2.050			LGM	Cibicidoides wuellerstorfi	13.98	1.37	0.038	0.2269
V28-73	57.1830	-20.8700	-2063	0.035	0.03	0.04	Holocene	Cibicidoides wuellerstorfi	15.03	3.62	0.102	0.0449
V28-73	57.1830	-20.8700	-2063	0.035	0.03	0.04	Holocene	Cibicidoides wuellerstorfi	12.95	3.00	0.119	0.0481
V28-73	57.1830	-20.8700	-2063	0.100			Holocene	Cibicidoides wuellerstorfi	8.77	2.38	0.134	0.0348
V28-73	57.1830	-20.8700	-2063	0.100			Holocene	Cibicidoides wuellerstorfi	13.82	2.48	0.112	0.0446
V28-73	57.1830	-20.8700	-2063	0.430			LGM	Cibicidoides wuellerstorfi	22.33	2.15	0.064
V28-73	57.1830	-20.8700	-2063	0.430			LGM	Cibicidoides wuellerstorfi	21.45	1.99	0.061
CHN82-15	43.3700	-28.2300	-2153	0.030	0.00	0.06	Holocene	Cibicidoides wuellerstorfi	15.05	1.96	0.075	0.0137
CHN82-15	43.3700	-28.2300	-2153	0.030	0.00	0.06	Holocene	Cibicidoides wuellerstorfi	7.88	2.26	0.080	0.0093
CHN82-15	43.3700	-28.2300	-2153	0.030	0.00	0.06	Holocene	Cibicidoides wuellerstorfi	12.94	3.48	0.127	0.0161
CHN82-15	43.3700	-28.2300	-2153	0.030	0.00	0.06	Holocene	Cibicidoides wuellerstorfi	17.31	2.40	0.079	0.0132
CHN82-15	43.3700	-28.2300	-2153	0.310			LGM	Cibicidoides wuellerstorfi	26.11	2.51	0.055	0.0110
162-980	55.4849	-14.7023	-2180	4.315	4.21	4.42	LGM	Cibicidoides wuellerstorfi	10.15	1.82	0.052		Sample depths are composite; actual sample IDs are 980C-2H-01,63-64 cm and 84-86 cm
V29-202	60.3830	-20.9700	-2658	0.400	0.26	0.54	Holocene	Cibicidoides wuellerstorfi	23.89	1.32	0.080	0.1708
V29-202	60.3830	-20.9700	-2658	1.075	1.07	1.08	LGM	Cibicidoides wuellerstorfi	10.15	4.09	0.099	0.1983
CHN82-20	43.5000	-29.8700	-3070	0.060	0.03	0.09	Holocene	Cibicidoides wuellerstorfi	11.21	1.64	0.082	0.0185
CHN82-20	43.5000	-29.8700	-3070	0.060	0.03	0.09	Holocene	Cibicidoides wuellerstorfi	11.43	1.55	0.083	0.0176
CHN82-20	43.5000	-29.8700	-3070	0.810	0.80	0.82	LGM	Cibicidoides wuellerstorfi	22.91	2.91	0.116	0.0690
CHN82-20	43.5000	-29.8700	-3070	0.810	0.80	0.82	LGM	Cibicidoides wuellerstorfi	24.96	3.06	0.134	0.0603
CHN82-20	43.5000	-29.8700	-3070	0.810	0.80	0.82	LGM	Cibicidoides wuellerstorfi	9.67	3.25	0.117	0.0611
CHN82-11	42.2300	-31.4800	-3209	0.070	0.06	0.08	Holocene	Cibicidoides wuellerstorfi	14.51	1.70	0.084	0.0137
CHN82-11	42.2300	-31.4800	-3209	0.750	0.74	0.76	LGM	Cibicidoides wuellerstorfi	19.85	3.62	0.160	0.0436
CHN82-11	42.2300	-31.4800	-3209	0.750	0.74	0.76	LGM	Cibicidoides wuellerstorfi	22.95	4.13	0.157	0.0396
CHN82-11	42.2300	-31.4800	-3209	0.770	0.76	0.78	LGM	Cibicidoides wuellerstorfi	16.89	3.50	0.164	0.0380
CHN82-11	42.2300	-31.4800	-3209	0.790	0.78	0.80	LGM	Cibicidoides wuellerstorfi	14.03	3.15	0.135	0.0327
CHN82-11	42.2300	-31.4800	-3209	0.790	0.78	0.80	LGM	Cibicidoides wuellerstorfi	23.42	3.08	0.142	0.0330
CHN82-04	41.4300	-32.5100	-3427	0.015	0.00	0.03	Holocene	Cibicidoides wuellerstorfi	15.20	1.64	0.097	0.0234
CHN82-04	41.4300	-32.5100	-3427	0.015	0.00	0.03	Holocene	Cibicidoides wuellerstorfi	17.90	1.65	0.106	0.0277
CHN82-04	41.4300	-32.5100	-3427	0.590	0.57	0.61	LGM	Cibicidoides wuellerstorfi	4.20	3.65	0.179	0.0737
CHN82-04	41.4300	-32.5100	-3427	0.625	0.60	0.65	LGM	Cibicidoides wuellerstorfi	12.48	5.03	0.165	0.1089
CHN82-04	41.4300	-32.5100	-3427	0.625	0.60	0.65	LGM	Cibicidoides wuellerstorfi	11.05	4.41	0.159	0.1256
V29-193	55.4000	-18.7300	-1326	0.005	0.00	0.01	Holocene	Uvigerina spp.	11.48	3.56	0.153	0.0092
V29-204	61.1830	-23.0200	-1849	0.110	0.10	0.12	Holocene	Uvigerina spp.	13.67	0.95	0.068	0.0103
V28-73	57.1830	-20.8700	-2063	0.035	0.03	0.04	Holocene	Uvigerina spp.	14.55	2.46	0.133	0.0152
V28-73	57.1830	-20.8700	-2063	0.100			Holocene	Uvigerina spp.	7.90	2.58	0.118	0.0083
CHN82-20	43.5000	-29.8700	-3070	0.810	0.80	0.82	LGM	Uvigerina spp.	14.50	3.13	0.106	0.0103
CHN82-20	43.5000	-29.8700	-3070	0.810	0.80	0.82	LGM	Uvigerina spp.	18.40	2.33	0.107	0.0128
CHN82-11	42.2300	-31.4800	-3209	0.750	0.74	0.76	LGM	Uvigerina spp.	12.51	2.68	0.131	0.0032
CHN82-11	42.2300	-31.4800	-3209	0.750	0.74	0.76	LGM	Uvigerina spp.	13.82	2.59	0.132	0.0051
CHN82-11	42.2300	-31.4800	-3209	0.770	0.76	0.78	LGM	Uvigerina spp.	12.41	2.34	0.140	0.0055
CHN82-11	42.2300	-31.4800	-3209	0.770	0.76	0.78	LGM	Uvigerina spp.	14.92	2.23	0.123	0.0059
CHN82-11	42.2300	-31.4800	-3209	0.790	0.78	0.80	LGM	Uvigerina spp.	10.39	3.14	0.115	0.0043
CHN82-11	42.2300	-31.4800	-3209	0.790	0.78	0.80	LGM	Uvigerina spp.	10.99	2.24	0.112	0.0039
CHN82-04	41.4300	-32.5100	-3427	0.590	0.57	0.61	LGM	Uvigerina spp.	15.66	2.25	0.123	0.0203
CHN82-04	41.4300	-32.5100	-3427	0.590	0.57	0.61	LGM	Uvigerina spp.	13.95	2.20	0.121	0.0170
CHN82-04	41.4300	-32.5100	-3427	0.625	0.60	0.65	LGM	Uvigerina spp.	19.82	1.75	0.117	0.0195
CHN82-04	41.4300	-32.5100	-3427	0.625	0.60	0.65	LGM	Uvigerina spp.	9.40	1.62	0.109	0.0208
CHN82-15	43.3700	-28.2300	-2153	0.030	0.00	0.06	Holocene	Cibicidoides kullenbergi	28.58	7.41	0.084	0.0070
CHN82-11	42.2300	-31.4800	-3209	0.070	0.06	0.08	Holocene	Cibicidoides kullenbergi	16.86	7.93	0.062	0.0058
CHN82-04	41.4300	-32.5100	-3427	0.015	0.00	0.03	Holocene	Cibicidoides kullenbergi	25.04	9.08	0.073	0.0065
CHN82-04	41.4300	-32.5100	-3427	0.015	0.00	0.03	Holocene	Cibicidoides kullenbergi	17.27	9.91	0.055	0.0060
V29-193	55.4000	-18.7300	-1326	0.005	0.00	0.01	Holocene	Cibicidoides pachyderma	18.03	4.77	0.077	0.0155
CHN82-15	43.3700	-28.2300	-2153	0.030	0.00	0.06	Holocene	Cibicidoides rugosus	25.90	2.10	0.065	0.0167
CHN82-15	43.3700	-28.2300	-2153	0.310			Holocene	Cibicidoides rugosus	21.78	2.32	0.047	0.0150