Citation:

330156a0

Name: (Table 1) Cd/Ca and Mn/Ca ratios of benthic foraminifera from DSDP Hole 30-289
Published: 1987
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

The late Miocene carbon shift (~6.2 Myr) -a 0.5-1.0 per mil, d13C decrease in benthic and planktonic foraminifera- has been ascribed to changes in global inventory, deep-ocean circulation, and/or productivity. Cadmium, d13C, and nutrients in the ocean are linked; comparison of d13C and Cd/Ca yields circulation and chemical inventory information not available from either alone. We determined Cd/Ca ratios in late Miocene benthic foraminifera from DSDP Site 289. Results include: (1) late Miocene Pacific Cd/Ca values fall between those of late Quaternary Atlantic and Pacific benthic foraminifera; (2) there are no systematic Cd/Ca offsets between Cibicidoides kullenbergi, Cibicidoides wuellerstorfi and Uvigerina spp.; and (3) there is a very slight Cd/Ca change coincident with d13C. Cd/Ca, slightly higher in younger, isotopically lighter samples, exhibits a smaller increase than predicted if circulation were the primary cause of the carbon shift. The carbon shift may have been due to a long-term shift in the steady-state carbon isotope input or to a change in the sedimentation of organic carbon relative to calcium carbonate.

Project(s):

Deep Sea Drilling Project (DSDP)

Coverage:

Latitude: -0.498700 * Longitude: 158.511500

Date/Time Start: 1973-05-31T00:00:00 * Date/Time End: 1973-05-31T00:00:00

Minimum DEPTH, sediment/rock: 159.90 m * Maximum DEPTH, sediment/rock: 300.90 m

Event(s):

30-289 * Latitude: -0.498700 * Longitude: 158.511500 * Date/Time: 1973-05-31T00:00:00 * Elevation: -2206.0 m * Penetration: 1271 m * Recovery: 709.1 m * Location: South Pacific/PLATEAU * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 133 cores; 1270.8 m cored; 0 m drilled; 55.8 % recovery

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Sample code/label	Sample label		Delaney, Margaret Lois	DSDP/ODP/IODP sample designation
2	DEPTH, sediment/rock	Depth sed	m			Geocode
3	Epoch	Epoch		Delaney, Margaret Lois
4	AGE	Age	ka BP			Geocode
5	Species	Species		Delaney, Margaret Lois
6	Cadmium/Calcium ratio	Cd/Ca	mmol/mol	Delaney, Margaret Lois
7	Manganese/Calcium ratio	Mn/Ca	mmol/mol	Delaney, Margaret Lois
8	Comment	Comment		Delaney, Margaret Lois

License:

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

Size:

288 data points

Data

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

1 Sample label	2 Depth sed [m]	3 Epoch	4 Age [ka BP]	5 Species	6 Cd/Ca [mmol/mol]	7 Mn/Ca [mmol/mol]	8 Comment
30-289-17-6,40-42	159.90	Early Pliocene	5090	Uvigerina spp.	0.000068	0.059	small sample, excluded if it does not agree with replicates
30-289-17-6,40-42	159.90	Early Pliocene	5090	Cibicidoides kullenbergi	0.000147
30-289-17-6,40-42	159.90	Early Pliocene	5090	Cibicidoides wuellerstorfi	0.000160
30-289-18-3,25-27	164.75	Early Pliocene	5190	Uvigerina spp.	0.000143	0.028	small sample, excluded if it does not agree with replicates
30-289-18-3,25-27	164.75	Early Pliocene	5190	Cibicidoides kullenbergi	0.000133	0.066
30-289-18-3,25-27	164.75	Early Pliocene	5190	Cibicidoides wuellerstorfi	0.000140	0.051
30-289-19-4,40-42	175.90	Late Miocene	5410	Uvigerina spp.	0.000116	0.019
30-289-19-4,40-42	175.90	Late Miocene	5410	Cibicidoides kullenbergi	0.000127	0.036
30-289-19-4,40-42	175.90	Late Miocene	5410	Cibicidoides kullenbergi	0.000147	0.041
30-289-19-4,40-42	175.90	Late Miocene	5410	Cibicidoides wuellerstorfi	0.000155	0.064
30-289-20-6,40-42	188.40	Late Miocene	5630	Uvigerina spp.	0.000127	0.042
30-289-20-6,40-42	188.40	Late Miocene	5630	Cibicidoides kullenbergi	0.000139	0.056
30-289-20-6,40-42	188.40	Late Miocene	5630	Cibicidoides wuellerstorfi	0.000221	0.104	high Mn/Ca, excluded
30-289-21-3,40-42	191.90	Late Miocene	5690	Uvigerina spp.	0.000110	0.037
30-289-21-3,40-42	191.90	Late Miocene	5690	Cibicidoides kullenbergi	0.000295	0.056	error in sample handling, excluded
30-289-22-4,40-42	204.40	Late Miocene	6040	Uvigerina spp.	0.000113	0.020
30-289-22-4,40-42	204.40	Late Miocene	6040	Cibicidoides kullenbergi	0.000176	0.054
30-289-22-4,40-42	204.40	Late Miocene	6040	Cibicidoides wuellerstorfi	0.000183	0.062
30-289-23-6,40-42	216.90	Late Miocene	6520	Uvigerina spp.	0.000135	0.046
30-289-23-6,40-42	216.90	Late Miocene	6520	Cibicidoides kullenbergi	0.000125	0.043
30-289-23-6,40-42	216.90	Late Miocene	6520	Cibicidoides kullenbergi	0.000098	0.019
30-289-24-6,40-42	226.40	Late Miocene	6870	Uvigerina spp.	0.000117	0.037
30-289-24-6,40-42	226.40	Late Miocene	6870	Uvigerina spp.	0.000114	0.048	small sample, excluded if it does not agree with replicates
30-289-24-6,40-42	226.40	Late Miocene	6870	Cibicidoides kullenbergi	0.000097	0.042
30-289-24-6,40-42	226.40	Late Miocene	6870	Cibicidoides kullenbergi	0.000119	0.055
30-289-24-6,40-42	226.40	Late Miocene	6870	Cibicidoides wuellerstorfi	0.000146	0.066
30-289-25-5,40-42	234.40	Late Miocene	7180	Uvigerina spp.	0.000118	0.047
30-289-25-5,40-42	234.40	Late Miocene	7180	Cibicidoides kullenbergi	0.000115	0.034
30-289-25-5,40-42	234.40	Late Miocene	7180	Cibicidoides wuellerstorfi	0.000141	0.053
30-289-25-5,40-42	234.40	Late Miocene	7180	Uvigerina spp.	0.000122	0.057	Partial dissolution, fraction dissolved: 48%
30-289-25-5,40-42	234.40	Late Miocene	7180	Uvigerina spp.	0.000130	0.041	Partial dissolution, fraction dissolved: 34%
30-289-25-5,40-42	234.40	Late Miocene	7180	Uvigerina spp.	0.000146	0.032	Partial dissolution, fraction dissolved: 18%
30-289-26-3,40-42	240.90	Late Miocene	7440	Uvigerina spp.	0.000128	0.042
30-289-26-3,40-42	240.90	Late Miocene	7440	Cibicidoides kullenbergi	0.000137	0.055
30-289-26-3,40-42	240.90	Late Miocene	7440	Cibicidoides wuellerstorfi	0.000133	0.049
30-289-27-6,40-42	254.90	Late Miocene	8000	Uvigerina spp.	0.000102	0.029
30-289-27-6,40-42	254.90	Late Miocene	8000	Cibicidoides kullenbergi	0.000091	0.033
30-289-27-6,40-42	254.90	Late Miocene	8000	Cibicidoides wuellerstorfi	0.000104	0.024
30-289-28-6,40-42	264.40	Late Miocene	8380	Uvigerina spp.	0.000055	0.021	small sample, excluded if it does not agree with replicates
30-289-28-6,40-42	264.40	Late Miocene	8380	Cibicidoides kullenbergi	0.000149	0.036
30-289-28-6,40-42	264.40	Late Miocene	8380	Cibicidoides kullenbergi	0.000111	0.043
30-289-28-6,40-42	264.40	Late Miocene	8380	Cibicidoides wuellerstorfi	0.000121	0.036
30-289-28-6,40-42	264.40	Late Miocene	8380	Cibicidoides wuellerstorfi	0.000122	0.037
30-289-29-3,40-42	269.40	Late Miocene	8580	Uvigerina spp.	0.000106	0.016
30-289-29-3,40-42	269.40	Late Miocene	8580	Cibicidoides kullenbergi	0.000079	0.028
30-289-29-3,40-42	269.40	Late Miocene	8580	Cibicidoides wuellerstorfi	0.000120	0.032
30-289-29-3,40-42	269.40	Late Miocene	8580	Cibicidoides wuellerstorfi	0.000128	0.033
30-289-30-3,40-42	278.90	Late Miocene	8960	Uvigerina spp.	0.000083	0.021
30-289-30-3,40-42	278.90	Late Miocene	8960	Cibicidoides kullenbergi	0.000117	0.033
30-289-30-3,40-42	278.90	Late Miocene	8960	Cibicidoides wuellerstorfi	0.000122	0.030
30-289-31-6,40-42	292.90	Late Miocene	9520	Cibicidoides kullenbergi	0.000115	0.034
30-289-31-6,40-42	292.90	Late Miocene	9520	Cibicidoides kullenbergi	0.000118	0.059	small sample, excluded if it does not agree with replicates
30-289-31-6,40-42	292.90	Late Miocene	9520	Cibicidoides wuellerstorfi	0.000130	0.047
30-289-32-5,40-42	300.90	Late Miocene	9840	Uvigerina spp.	0.000073	0.058
30-289-32-5,40-42	300.90	Late Miocene	9840	Cibicidoides kullenbergi	0.000100	0.058
30-289-32-5,40-42	300.90	Late Miocene	9840	Cibicidoides wuellerstorfi	0.000120	0.056