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Mekik, Figen; Francois, Roger (2006): (Tables 2, 3) Element ratios of planktonic foraminifera from western Pacific surface sediments [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.832902, Supplement to: Mekik, F; Francois, R (2006): Tracing deep-sea calcite dissolution: Agreement between the| Globorotalia menardii fragmentation index and elemental ratios (Mg/Ca and Mg/Sr) in planktonic foraminifers. Paleoceanography, 21(4), PA4219, https://doi.org/10.1029/2006PA001296

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Abstract:
Accurately quantifying deep-sea calcite dissolution is crucial for understanding the role of the marine carbonate system in regulating atmospheric pCO2 over millennia. We compare a foraminifer-fragmentation-based calcite dissolution proxy (Globorotalia menardii fragmentation index (MFI)) to Mg/Ca, Sr/Ca, and Mg/Sr in several species of deep dwelling planktonic foraminifers. We conducted microfossil and geochemical analyses on the same core top samples taken at different depths on the Ontong Java Plateau to maximize the dissolution signal and minimize the temperature overprint on our data. We also compare elemental ratios from planktonic foraminifer tests to modern bottom water [CO3]2- undersaturation and model-derived estimates of percent calcite dissolved in deep-sea sediments. We find clear linear decreases in Mg/Ca or Mg/Sr in G. menardii and Pulleniatina obliquiloculata with increasing (1) bottom water [CO3]2- undersaturation, (2) percent calcite dissolved in sediments calculated with biogeochemical modeling, (3) MFI, and (4) percent calcite dissolved derived from MFI. These findings lend further support to MFI as a calcite dissolution proxy for deep-sea sediments. In contrast, we find no significant correlation between Sr/Ca and independent dissolution indicators. Our results suggest that Mg/Ca and Mg/Sr from deep dwelling foraminifers could potentially be used as calcite dissolution proxies in combination with independent water temperature estimates. Likewise, establishing the relationship between MFI and dissolution-induced changes in the Mg/Ca of surface-dwelling foraminifers could provide a tool to correct Mg/Ca–derived sea surface temperature reconstructions for calcite dissolution.
Coverage:
Median Latitude: -0.901733 * Median Longitude: 159.692333 * South-bound Latitude: -2.083000 * West-bound Longitude: 155.865000 * North-bound Latitude: -0.003000 * East-bound Longitude: 162.683000
Date/Time Start: 1975-04-18T00:00:00 * Date/Time End: 1975-04-29T00:00:00
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
ERDC-089P  * Latitude: -0.003000 * Longitude: 155.865000 * Date/Time: 1975-04-18T00:00:00 * Elevation: -1932.0 m * Campaign: ERDC * Basis: Thomas Washington * Method/Device: Piston corer (PC)
ERDC-090G  * Latitude: -0.865000 * Longitude: 157.480000 * Date/Time: 1975-04-19T00:00:00 * Elevation: -1903.0 m * Campaign: ERDC * Basis: Thomas Washington * Method/Device: Gravity corer (GC)
ERDC-098G  * Latitude: -2.083000 * Longitude: 158.473000 * Date/Time: 1975-04-20T00:00:00 * Elevation: -1977.0 m * Campaign: ERDC * Basis: Thomas Washington * Method/Device: Gravity corer (GC)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Event labelEvent
2 Latitude of eventLatitude
3 Longitude of eventLongitude
4 Elevation of eventElevationm
5 DEPTH, sediment/rockDepth sedmGeocode
6 Neogloboquadrina dutertreiN. dutertrei#Mekik, Figenmeasured
7 Neogloboquadrina dutertreiN. dutertrei#Mekik, Figenduplicate
8 Globorotalia menardiiG. menardii#Mekik, Figenmeasured
9 Globorotalia menardiiG. menardii#Mekik, Figenduplicate
10 Pulleniatina obliquiloculataP. obliquiloculata#Mekik, Figenmeasured
11 Pulleniatina obliquiloculataP. obliquiloculata#Mekik, Figenduplicate
12 Globorotalia tumidaG. tumida#Mekik, Figenmeasured
13 Globorotalia tumidaG. tumida#Mekik, Figenduplicate
14 Neogloboquadrina dutertrei, Magnesium/Calcium ratioN. dutertrei Mg/Cammol/molMekik, Figenmeasured
15 Magnesium/Calcium ratio, standard deviationMg/Ca std dev±Mekik, FigenN. dutertrei, measured
16 Neogloboquadrina dutertrei, Magnesium/Calcium ratioN. dutertrei Mg/Cammol/molMekik, Figenduplicate
17 Magnesium/Calcium ratio, standard deviationMg/Ca std dev±Mekik, FigenN. dutertrei, duplicate
18 Globorotalia menardii, Magnesium/Calcium ratioG. menardii Mg/Cammol/molMekik, Figenmeasured
19 Magnesium/Calcium ratio, standard deviationMg/Ca std dev±Mekik, FigenG. menardii, measured
20 Globorotalia menardii, Magnesium/Calcium ratioG. menardii Mg/Cammol/molMekik, Figenduplicate
21 Magnesium/Calcium ratio, standard deviationMg/Ca std dev±Mekik, FigenG. menardii, duplicate
22 Pulleniatina obliquiloculata, Magnesium/Calcium ratioP. obliquiloculata Mg/Cammol/molMekik, Figenmeasured
23 Magnesium/Calcium ratio, standard deviationMg/Ca std dev±Mekik, FigenP. obliquiloculata, measured
24 Pulleniatina obliquiloculata, Magnesium/Calcium ratioP. obliquiloculata Mg/Cammol/molMekik, Figenduplicate
25 Magnesium/Calcium ratio, standard deviationMg/Ca std dev±Mekik, FigenP. obliquiloculata, duplicate
26 Globorotalia tumida, Magnesium/Calcium ratioG. tumida Mg/Cammol/molMekik, Figenmeasured
27 Magnesium/Calcium ratio, standard deviationMg/Ca std dev±Mekik, FigenG. tumida, measured
28 Globorotalia tumida, Magnesium/Calcium ratioG. tumida Mg/Cammol/molMekik, Figenduplicate
29 Magnesium/Calcium ratio, standard deviationMg/Ca std dev±Mekik, FigenG. tumida, duplicate
30 Strontium/Calcium ratioSr/Cammol/molMekik, FigenN. dutertrei, measured
31 Strontium/Calcium ratioSr/CaMekik, FigenN. dutertrei, measured
32 Strontium/Calcium ratioSr/Cammol/molMekik, FigenN. dutertrei, duplicate
33 Strontium/Calcium ratioSr/CaMekik, FigenN. dutertrei, duplicate
34 Strontium/Calcium ratioSr/Cammol/molMekik, FigenG. menardii, measured
35 Strontium/Calcium ratioSr/CaMekik, FigenG. menardii, measured
36 Strontium/Calcium ratioSr/Cammol/molMekik, FigenG. menardii, duplicate
37 Strontium/Calcium ratioSr/CaMekik, FigenG. menardii, duplicate
38 Strontium/Calcium ratioSr/Cammol/molMekik, FigenP. obliquiloculata, measured
39 Strontium/Calcium ratioSr/CaMekik, FigenP. obliquiloculata, measured
40 Strontium/Calcium ratioSr/Cammol/molMekik, FigenP. obliquiloculata, duplicate
41 Strontium/Calcium ratioSr/CaMekik, FigenP. obliquiloculata, duplicate
42 Strontium/Calcium ratioSr/Cammol/molMekik, FigenG. tumida, measured
43 Strontium/Calcium ratioSr/CaMekik, FigenG. tumida, measured
44 Strontium/Calcium ratioSr/Cammol/molMekik, FigenG. tumida, duplicate
45 Strontium/Calcium ratioSr/CaMekik, FigenG. tumida, duplicate
46 Magnesium/Strontium ratioMg/SrMekik, FigenN. dutertrei, measured [mmol/mmol]
47 Magnesium/Strontium ratio, standard deviationMg/Sr std devMekik, FigenN. dutertrei, measured
48 Magnesium/Strontium ratioMg/SrMekik, FigenN. dutertrei, duplicate [mmol/mmol]
49 Magnesium/Strontium ratio, standard deviationMg/Sr std devMekik, FigenN. dutertrei, duplicate
50 Magnesium/Strontium ratioMg/SrMekik, FigenG. menardii, measured [mmol/mmol]
51 Magnesium/Strontium ratio, standard deviationMg/Sr std devMekik, FigenG. menardii, measured
52 Magnesium/Strontium ratioMg/SrMekik, FigenG. menardii, duplicate [mmol/mmol]
53 Magnesium/Strontium ratio, standard deviationMg/Sr std devMekik, FigenG. menardii, duplicate
54 Magnesium/Strontium ratioMg/SrMekik, FigenP. obliquiloculata, measured [mmol/mmol]
55 Magnesium/Strontium ratio, standard deviationMg/Sr std devMekik, FigenP. obliquiloculata, measured
56 Magnesium/Strontium ratioMg/SrMekik, FigenP. obliquiloculata, duplicate [mmol/mmol]
57 Magnesium/Strontium ratio, standard deviationMg/Sr std devMekik, FigenP. obliquiloculata, duplicate
58 Magnesium/Strontium ratioMg/SrMekik, FigenG. tumida, measured [mmol/mmol]
59 Magnesium/Strontium ratio, standard deviationMg/Sr std devMekik, FigenG. tumida, measured
60 Magnesium/Strontium ratioMg/SrMekik, FigenG. tumida, duplicate [mmol/mmol]
61 Magnesium/Strontium ratio, standard deviationMg/Sr std devMekik, FigenG. tumida, duplicate
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
363 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 
N. dutertrei [#]
(measured)		7 
N. dutertrei [#]
(duplicate)		8 
G. menardii [#]
(measured)		9 
G. menardii [#]
(duplicate)		10 
P. obliquiloculata [#]
(measured)		11 
P. obliquiloculata [#]
(duplicate)		12 
G. tumida [#]
(measured)		13 
G. tumida [#]
(duplicate)		14 
N. dutertrei Mg/Ca [mmol/mol]
(measured)		15 
Mg/Ca std dev [±]
(N. dutertrei, measured)		16 
N. dutertrei Mg/Ca [mmol/mol]
(duplicate)		17 
Mg/Ca std dev [±]
(N. dutertrei, duplicate)		18 
G. menardii Mg/Ca [mmol/mol]
(measured)		19 
Mg/Ca std dev [±]
(G. menardii, measured)		20 
G. menardii Mg/Ca [mmol/mol]
(duplicate)		21 
Mg/Ca std dev [±]
(G. menardii, duplicate)		22 
P. obliquiloculata Mg/Ca [mmol/mol]
(measured)		23 
Mg/Ca std dev [±]
(P. obliquiloculata, measured)		24 
P. obliquiloculata Mg/Ca [mmol/mol]
(duplicate)		25 
Mg/Ca std dev [±]
(P. obliquiloculata, duplicate)		26 
G. tumida Mg/Ca [mmol/mol]
(measured)		27 
Mg/Ca std dev [±]
(G. tumida, measured)		28 
G. tumida Mg/Ca [mmol/mol]
(duplicate)		29 
Mg/Ca std dev [±]
(G. tumida, duplicate)		30 
Sr/Ca [mmol/mol]
(N. dutertrei, measured)		31 
Sr/Ca
(N. dutertrei, measured)		32 
Sr/Ca [mmol/mol]
(N. dutertrei, duplicate)		33 
Sr/Ca
(N. dutertrei, duplicate)		34 
Sr/Ca [mmol/mol]
(G. menardii, measured)		35 
Sr/Ca
(G. menardii, measured)		36 
Sr/Ca [mmol/mol]
(G. menardii, duplicate)		37 
Sr/Ca
(G. menardii, duplicate)		38 
Sr/Ca [mmol/mol]
(P. obliquiloculata, measured)		39 
Sr/Ca
(P. obliquiloculata, measured)		40 
Sr/Ca [mmol/mol]
(P. obliquiloculata, duplicate)		41 
Sr/Ca
(P. obliquiloculata, duplicate)		42 
Sr/Ca [mmol/mol]
(G. tumida, measured)		43 
Sr/Ca
(G. tumida, measured)		44 
Sr/Ca [mmol/mol]
(G. tumida, duplicate)		45 
Sr/Ca
(G. tumida, duplicate)		46 
Mg/Sr
(N. dutertrei, measured [mmol/...)		47 
Mg/Sr std dev
(N. dutertrei, measured)		48 
Mg/Sr
(N. dutertrei, duplicate [mmol...)		49 
Mg/Sr std dev
(N. dutertrei, duplicate)		50 
Mg/Sr
(G. menardii, measured [mmol/m...)		51 
Mg/Sr std dev
(G. menardii, measured)		52 
Mg/Sr
(G. menardii, duplicate [mmol/...)		53 
Mg/Sr std dev
(G. menardii, duplicate)		54 
Mg/Sr
(P. obliquiloculata, measured ...)		55 
Mg/Sr std dev
(P. obliquiloculata, measured)		56 
Mg/Sr
(P. obliquiloculata, duplicate...)		57 
Mg/Sr std dev
(P. obliquiloculata, duplicate)		58 
Mg/Sr
(G. tumida, measured [mmol/mmol])		59 
Mg/Sr std dev
(G. tumida, measured)		60 
Mg/Sr
(G. tumida, duplicate [mmol/mmol])		61 
Mg/Sr std dev
(G. tumida, duplicate)
ERDC-098G -2.083158.473-19770227440242.950.172.900.172.530.172.590.152.730.161.080.051.000.041.260.051.480.062.730.162.530.202.060.131.840.11
ERDC-116G -0.998159.468-2272020252892.160.162.570.152.760.161.750.101.050.051.260.051.550.061.120.052.060.172.040.131.780.111.550.10
ERDC-118G -0.982158.800-2163010682.370.142.260.122.340.131.210.051.160.051.130.051.960.141.950.132.110.14
ERDC-121G -0.018158.713-2245081.980.181.320.081.150.081.720.17
ERDC-126G -0.018160.983-33280261972.440.142.470.141.910.111.250.051.400.061.120.051.950.121.760.111.710.12
ERDC-127P -0.003161.418-372407443279101.400.091.200.092.240.162.070.121.560.111.570.091.140.051.20.051.280.081.390.061.080.071.260.051.230.081.000.081.750.121.490.091.440.101.250.09
ERDC-130P -0.040161.917-41230541.660.171.400.151.130.071.410.081.480.061.180.091.470.141.190.12
ERDC-132P -0.043162.683-4441043513141.460.091.940.121.690.111.320.131.210.051.300.061.310.061.130.071.210.081.490.101.290.091.170.10
ERDC-090G -0.865157.480-19030834262.410.242.670.202.750.171.150.081.240.081.450.062.090.202.150.141.900.10
ERDC-089P -0.003155.865-193202541130172.360.232.310.232.460.163.050.192.970.171.290.091.300.011.210.061.330.061.820.181.780.182.030.152.290.15
ERDC-115G -1.645159.198-21570136272252.730.282.640.222.840.172.100.151.240.081.280.051.330.091.520.061.150.062.220.231.980.151.870.121.830.14
ERDC-109G -1.743160.783-363603328662.210.142.300.141.600.131.790.111.290.111.440.061.150.081.290.051.710.191.600.101.390.111.390.11
ERDC-110G -1.738160.487-300303152.570.232.150.211.300.091.200.081.980.181.790.17
ERDC-111G -1.710159.917-266702762.660.152.050.171.440.061.160.071.850.111.650.13
ERDC-114G -1.637159.200-21510551422.680.222.660.162.640.152.830.231.160.081.490.061.060.062.310.171.940.091.750.112.670.23