Citation:

2006PA001337

Name: d11B and metal/Ca ratios versus size fractions in the Surface and deep dwelling species, ODP Holes 130-806B and 108-664C
Published: 2007
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:

We have assessed the reliability of several foraminifer-hosted proxies of the ocean carbonate system (d11B, B/Ca, and U/Ca) using Holocene samples from the Atlantic and Pacific oceans. We examined chemical variability over a range of test sizes for two surface-dwelling foraminifers (Globigerinoides sacculifer and Globigerinoides ruber). Measurements of d11B in G. ruber show no significant relationship with test size in either Atlantic or Pacific sites and appear to provide a robust proxy of surface seawater pH. Likewise there is no significant variability in the d11B of our Atlantic core top G. sacculifer, but we find that d11B increases with increasing test size for G. sacculifer in the Pacific. These systematic differences in d11B are inferred to be a consequence of isotopically light gametogenic calcite in G. sacculifer and its preferential preservation during postdepositional dissolution. The trace element ratio proxies of ocean carbonate equilibria, U/Ca and B/Ca, show systematic increases in both G. ruber and G. sacculifer with increasing test size, possibly as a result of changing growth rates. This behavior complicates their use in paleoceanographic reconstructions. In keeping with several previous studies we find that Mg/Ca ratios increase with increasing size fraction in our well-preserved Atlantic G. sacculifer but not in G. ruber. In contrast to previous interpretations we suggest that these observations reflect a proportionally larger influence of compositionally distinct gametogenic calcite in small individuals compared to larger ones. As with d11B this influences G. sacculifer but not G. ruber, which has negligible gametogenic calcite.

Project(s):

Ocean Drilling Program (ODP)

Coverage:

Median Latitude: -0.347067 * Median Longitude: 75.433500 * South-bound Latitude: -1.467000 * West-bound Longitude: -23.227500 * North-bound Latitude: 0.318500 * East-bound Longitude: 159.361000

Date/Time Start: 1971-03-23T00:00:00 * Date/Time End: 1990-02-23T01:30:00

Minimum DEPTH, sediment/rock: 0.02 m * Maximum DEPTH, sediment/rock: 0.02 m

Event(s):

108-664C * Latitude: 0.107300 * Longitude: -23.227500 * Date/Time Start: 1986-03-31T00:00:00 * Date/Time End: 1986-04-01T07:30:00 * Elevation: -3810.0 m * Penetration: 61.2 m * Recovery: 57.18 m * Location: South Atlantic Ocean * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 7 cores; 61.2 m cored; 0 m drilled; 93.4 % recovery

130-806B * Latitude: 0.318500 * Longitude: 159.361000 * Date/Time Start: 1990-02-18T21:00:00 * Date/Time End: 1990-02-23T01:30:00 * Elevation: -2519.9 m * Penetration: 743.1 m * Recovery: 666.36 m * Location: North Pacific Ocean * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 78 cores; 743.1 m cored; 0 m drilled; 89.7 % recovery

RC14-37 * Latitude: -1.467000 * Longitude: 90.167000 * Date/Time: 1971-03-23T00:00:00 * Elevation: -2226.0 m * Recovery: 6.05 m * Campaign: * Basis: Robert Conrad * Method/Device: Piston corer (PC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event
2	Sample code/label	Sample label		Ni, Yunyan	DSDP/ODP/IODP sample designation
3	DEPTH, sediment/rock	Depth sed	m			Geocode
4	Species	Species		Ni, Yunyan
5	Size fraction	Size fraction		Ni, Yunyan		[µm]
6	Magnesium/Calcium ratio	Mg/Ca	mmol/mol	Ni, Yunyan
7	Strontium/Calcium ratio	Sr/Ca	mmol/mol	Ni, Yunyan
8	Manganese/Calcium ratio	Mn/Ca	mmol/mol	Ni, Yunyan
9	Cadmium/Calcium ratio	Cd/Ca	µmol/mol	Ni, Yunyan
10	Barium/Calcium ratio	Ba/Ca	µmol/mol	Ni, Yunyan
11	Uranium/Calcium ratio	U/Ca	µmol/mol	Ni, Yunyan
12	Lithium/Calcium ratio	Li/Ca	µmol/mol	Ni, Yunyan
13	Sodium/Calcium ratio	Na/Ca	mmol/mol	Ni, Yunyan
14	Aluminium/Calcium ratio	Al/Ca	mmol/mol	Ni, Yunyan
15	Neodymium/Calcium ratio	Nd/Ca	µmol/mol	Ni, Yunyan
16	Boron/Calcium ratio	B/Ca	µmol/mol	Ni, Yunyan
17	δ11B	δ11B	‰ SRM	Ni, Yunyan	Negative-thermal ionization mass spectrometry (N-TIMS)	Permil deviation from NIST SRM 951, 11B/10BTE = 4.0396
18	δ11B, standard deviation	δ11B std dev	±	Ni, Yunyan	Negative-thermal ionization mass spectrometry (N-TIMS)
19	Replicates	Repl	#	Ni, Yunyan

License:

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

Size:

494 data points

Data

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

1 Event	2 Sample label	3 Depth sed [m]	4 Species	5 Size fraction	6 Mg/Ca [mmol/mol]	7 Sr/Ca [mmol/mol]	8 Mn/Ca [mmol/mol]	9 Cd/Ca [µmol/mol]	10 Ba/Ca [µmol/mol]	11 U/Ca [µmol/mol]	12 Li/Ca [µmol/mol]	13 Na/Ca [mmol/mol]	14 Al/Ca [mmol/mol]	15 Nd/Ca [µmol/mol]	16 B/Ca [µmol/mol]	17 δ11B [‰ SRM]	18 δ11B std dev [±]	19 Repl [#]
130-806B	130-806B-1H-1,12-17		Globigerinoides sacculifer with final sac-like chamber	600-710	4.230	1.28	33.56	0.17	1.18	14.62	7.34	5.14	15.88	0.48	74.94	24.4	0.8	7
130-806B	130-806B-1H-1,12-17		Globigerinoides sacculifer with final sac-like chamber	500-600	4.390	1.29	38.28	0.41	1.81	14.42	0.00	5.17	14.39	0.52	75.20	24.0	0.4	3
130-806B	130-806B-1H-1,12-17		Globigerinoides sacculifer with final sac-like chamber	425-500	4.240	1.30	28.04	0.15	1.27	12.09	7.76	5.19	3.63	0.58	69.67	22.8	0.5	3
130-806B	130-806B-1H-1,12-17		Globigerinoides sacculifer with final sac-like chamber	355-425	4.250	1.29	42.09	0.28	1.37	10.52	10.31	5.23	22.63	0.71		22.0	0.4	2
130-806B	130-806B-1H-1,12-17		Globigerinoides sacculifer with final sac-like chamber	300-355	3.940	1.29	24.40	0.17	1.24	8.64	9.82	5.07	45.07	0.67	66.50	21.3	0.2	3
130-806B	130-806B-1H-1,12-17		Globigerinoides sacculifer with final sac-like chamber	250-300	3.700	1.32	30.92	0.16	1.01	7.70	7.05	5.14	7.88	0.48		19.2	0.0	2
130-806B	130-806B-1H-1,12-17		Globigerinoides ruber white	355-425	4.400	1.41	32.54	0.25	1.16	10.65	14.14	6.13	30.58	1.07		22.4	0.7	2
130-806B	130-806B-1H-1,12-17		Globigerinoides ruber white	300-355	4.420	1.40	41.97	0.23	1.82	9.77	14.09	6.46	18.17	0.86	111.69	22.8	0.7	3
130-806B	130-806B-1H-1,12-17		Globigerinoides ruber white	250-300	4.460	1.43	47.53	0.21	2.03	9.33	13.07	5.96	33.18	0.67	110.68	23.2	0.0	2
130-806B	130-806B-1H-1,12-17		Globigerinoides ruber white	212-250	4.560	1.42	32.38	0.25	1.32	8.26	12.72	5.85	14.17	0.50	101.35	23.1	0.7	1
108-664C	108-664C-1H-1,10-12		Globigerinoides sacculifer with final sac-like chamber	600-710	3.630	1.27	20.89	0.14	1.37	10.84	13.95	6.36	21.27	0.94	97.08	24.1	0.4	3
108-664C	108-664C-1H-1,10-12		Globigerinoides sacculifer with final sac-like chamber	500-600	3.700	1.29	28.55	0.13	1.42	11.98	13.02	5.91	38.32	0.82		24.0	0.5	3
108-664C	108-664C-1H-1,10-12		Globigerinoides sacculifer with final sac-like chamber	425-500	3.600	1.30	21.71	0.12	1.56	10.86	13.25	6.06	33.91	0.80	86.97	22.7	0.8	4
108-664C	108-664C-1H-1,10-12		Globigerinoides sacculifer with final sac-like chamber	355-425	3.470	1.31	9.68	0.13	1.15	8.98	12.44	5.89	12.14	0.69	86.46	24.4	1.1	3
108-664C	108-664C-1H-1,10-12		Globigerinoides sacculifer with final sac-like chamber	300-355	3.300	1.33	15.79	0.13	1.32	8.00	12.26	6.28	22.50	0.86	86.97	23.8	0.4	3
108-664C	108-664C-1H-1,10-12		Globigerinoides sacculifer with final sac-like chamber	250-300	3.240	1.32	15.03	0.13	1.40	7.70	12.70	6.25	14.95	0.79	79.34	23.0	0.3	3
108-664C	108-664C-1H-1,10-12		Globigerinoides sacculifer with final sac-like chamber	212-250	3.200	1.33	17.86	0.13	1.29	6.74	12.12	5.98	18.50	0.69	84.56	23.8	1.1	3
108-664C	108-664C-1H-1,10-12		Globigerinoides ruber pink	425-500	3.632	1.38	37.72	0.15	2.57	13.47	16.31	6.53	72.28	0.92	125.43	24.1	0.3	3
108-664C	108-664C-1H-1,10-12		Globigerinoides ruber pink	355-425	3.525	1.39	20.00	0.14	1.44	13.31	15.34	6.54	32.12	0.91	119.08	23.4	0.5	4
108-664C	108-664C-1H-1,10-12		Globigerinoides ruber pink	300-355	3.582	1.38	23.94	0.14	1.76	11.08	15.75	6.47	44.15	0.81	110.43	23.5	0.6	2
108-664C	108-664C-1H-1,10-12		Globigerinoides ruber pink	250-300	3.560	1.41	13.62	0.14	1.42	11.33	14.33	6.32	20.42	0.83		25.4	0.2	2
108-664C	108-664C-1H-1,10-12		Globigerinoides ruber pink	212-250	3.465	1.39	20.53	0.14	1.66	9.30	15.21	6.48	40.20	0.79	94.66	24.0	0.7	2
108-664C	108-664C-1H-1,10-12		Globigerinoides ruber white	425-500	3.680	1.37	10.67	0.20	3.06	13.93	15.88	7.55	86.45	1.14		22.8	0.1	2
108-664C	108-664C-1H-1,10-12		Globigerinoides ruber white	355-425	3.870	1.37	19.96	0.17	1.53	9.75	16.76	7.25	22.38	0.76	116.41	24.3	0.5	6
108-664C	108-664C-1H-1,10-12		Globigerinoides ruber white	300-355	3.870	1.39	25.38	0.13	1.79	9.70	15.30	6.33	51.75	0.82	113.44	23.3	0.5	2
108-664C	108-664C-1H-1,10-12		Globigerinoides ruber white	250-300	4.000	1.39	14.25	0.15	1.23	9.78	13.49	6.35	27.73	0.88	65.89	22.9	1.0	2
108-664C	108-664C-1H-1,10-12		Globigerinoides ruber white	212-250	3.940	1.37	25.50	0.13	1.58	8.12	15.04	6.40	35.40	0.81	117.31	22.6	1.0	2
108-664C	108-664C-1H-1,10-12		Globigerinoides ruber white	180-212	4.080	1.40	32.65	0.14	1.89	7.91	14.92	6.45	38.07	0.86	107.42	22.4	0.3	2
RC14-37	1H-1,0-4	0.02	Globigerinoides sacculifer with final sac-like chamber	515-865												23.3	0.5	2
RC14-37	1H-1,0-4	0.02	Globigerinoides sacculifer with final sac-like chamber	425-515												23.7	0.7	1
RC14-37	1H-1,0-4	0.02	Globigerinoides sacculifer with final sac-like chamber	380-425												22.9	0.8	2
RC14-37	1H-1,0-4	0.02	Globigerinoides sacculifer with final sac-like chamber	250-350												20.6	0.7	1