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Egeberg, Per Kristian; Brunfelt, Arild O; Stabel, Arne S (1992): (Table 1) Composition of selected ash layers in ODP Site 126-792 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.774205, Supplement to: Egeberg, PK et al. (1992): Characterization and correlation of megascopic tephras in Site 792 cores from the Izu-Ogasawara Forearc Basin (Japan) by trace elements and 87Sr/86Sr and 143Nd/144Nd isotopes. In: Taylor, B; Fujioka, K; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 126, 457-465, https://doi.org/10.2973/odp.proc.sr.126.149.1992

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Published: 1992 (exact date unknown)DOI registered: 2012-02-15

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Abstract:
Glass shards from 26 megascopic tephras (1-29 cm thick) were separated and analyzed for 26 elements and 87Sr/86Sr and 143Nd/144Nd isotope ratios. The isotope data allowed us to assess the degree of alteration of the samples. The separates contain less than 10% of palagonitized glass or secondary alteration minerals. Correlation diagrams and multivariate analyses have been used to characterize the glass shards in a tectonic setting and group the tephras according to their magmatic affinity. Four tholeiitic groups, two calc-alkaline groups, and one group with glass of shoshonitic affinity can be distinguished. The tholeiitic groups form a time series; however, judging from the rare-earth-element patterns and the temporal variations of the Ce/Yb ratios, the evolution is not unidirectional from strong to weak tholeiitic affinity.
The tephras have been correlated with volcanism along the Izu-Ogasawara and Ryukyu arcs by means of trace element distribution, 87Sr/86Sr ratios, and their magmatic affinity. The tholeiitic layers were derived from volcanoes on the Izu-Ogasawara Arc, most probably from the volcanic island Hachijojima. Only one group of the calc-alkaline layers can have derived from the Izu-Ogasawara Arc. The other calc-alkaline layers and the two layers with shoshonitic affinity probably derive from volcanism along the Ryukyu Arc.
Project(s):
Coverage:
Median Latitude: 32.399600 * Median Longitude: 140.380000 * South-bound Latitude: 32.399400 * West-bound Longitude: 140.379300 * North-bound Latitude: 32.399800 * East-bound Longitude: 140.380700
Date/Time Start: 1989-05-17T01:36:00 * Date/Time End: 1989-05-26T06:40:00
Minimum DEPTH, sediment/rock: 6.34 m * Maximum DEPTH, sediment/rock: 309.45 m
Event(s):
126-792A  * Latitude: 32.399800 * Longitude: 140.380700 * Date/Time Start: 1989-05-17T01:36:00 * Date/Time End: 1989-05-17T17:25:00 * Elevation: -1798.0 m * Penetration: 95 m * Recovery: 72.09 m * Location: North Pacific Ocean * Campaign: Leg126 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 10 cores; 95 m cored; 0 m drilled; 75.9 % recovery
126-792E  * Latitude: 32.399400 * Longitude: 140.379300 * Date/Time Start: 1989-05-19T04:55:00 * Date/Time End: 1989-05-26T06:40:00 * Elevation: -1798.0 m * Penetration: 885.9 m * Recovery: 362.07 m * Location: North Pacific Ocean * Campaign: Leg126 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 78 cores; 750.3 m cored; 0 m drilled; 48.3 % recovery
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Event labelEvent
Sample code/labelSample labelEgeberg, Per KristianDSDP/ODP/IODP sample designation
Layer descriptionLayerEgeberg, Per KristianShipboard Scientific Party, ash layer number
Layer descriptionLayerEgeberg, Per KristianShipboard Scientific Party, ash layer number
DEPTH, sediment/rockDepth sedmGeocode – mbsf
AGEAgeka BPGeocode
Layer thicknessThicknessmEgeberg, Per Kristian
Sodium oxideNa2O%Egeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 5.4 %
SeleniumSemg/kgEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 2.3 %
10 Titanium dioxideTiO2%Egeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 9.9 %
11 Iron oxide, Fe2O3Fe2O3%Egeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 2.1 %
12 CobaltComg/kgEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 1.9 %
13 RubidiumRbmg/kgEgeberg, Per KristianIsotope dilutionRel. Std. = 0.03 %
14 StrontiumSrmg/kgEgeberg, Per KristianIsotope dilutionRel. Std. = 0.03 %
15 ZirconiumZrmg/kgEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 9.02 %
16 AntimonySbmg/kgEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 25.76 %
17 CaesiumCsmg/kgEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 7.01 %
18 BariumBamg/kgEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 4.75 %
19 LanthanumLamg/kgEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 6.64 %
20 CeriumCemg/kgEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 12.4 %
21 NeodymiumNdmg/kgEgeberg, Per KristianIsotope dilutionRel. Std. = 0.05 %
22 SamariumSmmg/kgEgeberg, Per KristianIsotope dilutionRel. Std. = 0.05 %
23 EuropiumEumg/kgEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 2.04 %
24 TerbiumTbmg/kgEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 0.8 %
25 HolmiumHomg/kgEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 5 %
26 ThuliumTmmg/kgEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 1.78 %
27 YtterbiumYbmg/kgEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 1.86 %
28 LutetiumLumg/kgEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 9.83 %
29 HafniumHfmg/kgEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 2.42 %
30 TantalumTamg/kgEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 1.58 %
31 TungstenWmg/kgEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 10.6 %
32 ThoriumThmg/kgEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 3.38 %
33 UraniumUmg/kgEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 12.9 %
34 Strontium-87/Strontium-86 ratio87Sr/86SrEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 0.0019 %
35 Neodymium-143/Neodymium-144 ratio143Nd/144NdEgeberg, Per KristianInstrumental neutron activation analysis (INAA) (Reimann et al., 1998)Rel. Std. = 0.00075 %
Size:
827 data points

Data

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


Event

Sample label
(DSDP/ODP/IODP sample designation)

Layer
(Shipboard Scientific Party, a...)

Layer
(Shipboard Scientific Party, a...)

Depth sed [m]
(mbsf)

Age [ka BP]

Thickness [m]

Na2O [%]
(Rel. Std. = 5.4 %, Instrument...)

Se [mg/kg]
(Rel. Std. = 2.3 %, Instrument...)
10 
TiO2 [%]
(Rel. Std. = 9.9 %, Instrument...)
11 
Fe2O3 [%]
(Rel. Std. = 2.1 %, Instrument...)
12 
Co [mg/kg]
(Rel. Std. = 1.9 %, Instrument...)
13 
Rb [mg/kg]
(Rel. Std. = 0.03 %, Isotope d...)
14 
Sr [mg/kg]
(Rel. Std. = 0.03 %, Isotope d...)
15 
Zr [mg/kg]
(Rel. Std. = 9.02 %, Instrumen...)
16 
Sb [mg/kg]
(Rel. Std. = 25.76 %, Instrume...)
17 
Cs [mg/kg]
(Rel. Std. = 7.01 %, Instrumen...)
18 
Ba [mg/kg]
(Rel. Std. = 4.75 %, Instrumen...)
19 
La [mg/kg]
(Rel. Std. = 6.64 %, Instrumen...)
20 
Ce [mg/kg]
(Rel. Std. = 12.4 %, Instrumen...)
21 
Nd [mg/kg]
(Rel. Std. = 0.05 %, Isotope d...)
22 
Sm [mg/kg]
(Rel. Std. = 0.05 %, Isotope d...)
23 
Eu [mg/kg]
(Rel. Std. = 2.04 %, Instrumen...)
24 
Tb [mg/kg]
(Rel. Std. = 0.8 %, Instrument...)
25 
Ho [mg/kg]
(Rel. Std. = 5 %, Instrumental...)
26 
Tm [mg/kg]
(Rel. Std. = 1.78 %, Instrumen...)
27 
Yb [mg/kg]
(Rel. Std. = 1.86 %, Instrumen...)
28 
Lu [mg/kg]
(Rel. Std. = 9.83 %, Instrumen...)
29 
Hf [mg/kg]
(Rel. Std. = 2.42 %, Instrumen...)
30 
Ta [mg/kg]
(Rel. Std. = 1.58 %, Instrumen...)
31 
W [mg/kg]
(Rel. Std. = 10.6 %, Instrumen...)
32 
Th [mg/kg]
(Rel. Std. = 3.38 %, Instrumen...)
33 
U [mg/kg]
(Rel. Std. = 12.9 %, Instrumen...)
34 
87Sr/86Sr
(Rel. Std. = 0.0019 %, Instrum...)
35 
143Nd/144Nd
(Rel. Std. = 0.00075 %, Instru...)
126-792A 126-792A-1H-5,33-351936.34800.064.0011.20.533.683.512.8134.21350.200.8520513.014.612.44.011.060.971.420.454.450.703.270.1234.20.710.430.703600.51308
126-792A126-792A-1H-6,110-1122548.611100.295.3817.10.312.922.211.1113.01510.130.791757.218.012.33.751.010.880.990.454.450.853.460.1330.10.540.260.703470.51306
126-792A126-792A-2H-1,114-116510.851300.104.4627.00.565.725.19.2155.41120.140.962235.210.411.23.911.501.051.790.545.000.742.910.1129.10.590.320.703980.51304
126-792A126-792A-2H-2,84-8634612.051500.104.8917.40.483.112.763.9141.01860.172.8434421.240.223.15.551.341.011.350.664.430.664.970.6325.56.991.650.705270.51260
126-792A126-792A-3H-1,83-8544719.942500.145.2614.20.242.151.812.686.41360.281.002436.09.612.53.931.120.921.170.455.090.833.740.1014.30.730.340.703480.51310
126-792A126-792A-3H-1,125-12746820.362500.055.529.70.141.811.323.652.71560.200.9327313.931.716.54.240.710.891.140.465.021.184.990.3839.21.810.700.703260.51300
126-792A126-792A-3H-2,107-10950921.682700.162.968.60.322.092.013.390.11140.311.282322.515.112.13.810.890.901.360.474.780.683.970.1013.30.740.410.703490.51307
126-792A126-792A-4H-2,39-41751430.303700.134.3611.80.463.324.013.169.02270.401.833124.916.511.84.411.171.322.150.736.970.775.710.1315.40.750.600.703720.51309
126-792A126-792A-4H-4,6-8821632.974100.015.6820.90.404.004.117.2115.81730.231.022298.113.819.86.001.361.201.830.666.211.354.430.2421.51.050.560.704040.51305
126-792A126-792A-4H-4,99-101881733.904200.094.5620.90.393.672.36.6110.21160.360.922414.513.611.74.311.361.181.930.525.671.063.070.0721.40.190.310.703720.51311
126-792A126-792A-5H-1,40-421041838.214700.055.2912.10.172.371.021.780.72560.050.8921314.234.423.26.041.381.281.680.646.520.906.540.479.42.110.760.703150.51306
126-792A126-792A-5H-2,85-871121940.165000.095.0912.40.212.252.114.668.01530.371.492656.813.313.84.500.771.141.910.535.551.184.440.1112.00.700.530.703740.51307
126-792A126-792A-5H-3,17-191152040.985100.115.2022.30.393.142.16.0116.8900.200.611793.614.310.53.831.321.091.410.455.321.043.050.0710.30.290.150.703760.51310
126-792A126-792A-5H-3,61-631182141.425100.064.9023.30.443.152.97.3117.81200.210.581904.114.710.83.921.351.031.310.515.220.882.840.0741.60.280.280.703740.51308
126-792A126-792A-5H-3,135-1371232242.165200.154.454.00.151.200.999.882.71130.597.0447124.046.416.93.250.540.530.530.432.850.513.710.7019.89.501.880.705100.51260
126-792A126-792A-6H-2,100-1021292449.716100.195.5515.70.212.740.814.681.22000.090.5716211.325.421.76.411.681.461.660.707.131.225.610.328.41.120.390.702590.51305
126-792A126-792A-7H-1,27-291452656.887000.085.7813.50.142.040.614.477.42280.080.5817513.326.122.26.211.641.321.740.726.491.305.510.376.31.300.540.703170.51306
126-792A126-792A-7H-2,44-461492758.557200.115.7214.90.312.611.314.4101.61840.140.4818611.522.017.95.931.431.371.600.726.071.185.660.3112.11.170.520.703230.51306
126-792A126-792A-7H-4,16-181562961.277300.165.9117.90.293.091.914.5131.32660.060.7424212.031.819.95.752.121.511.780.837.321.206.090.3414.01.430.590.703330.51304
126-792A126-792A-8H-CC,2-41733075.408600.094.864.10.180.940.6112.483.2880.437.5957130.145.115.03.170.620.500.710.352.530.372.930.8614.210.722.860.705020.51260
126-792A126-792A-9H-3,47-491823179.088900.174.2614.10.362.642.747.4106.61630.662.6047813.441.414.84.501.040.981.370.444.920.934.760.3211.75.001.230.704340.51281
126-792A126-792A-9H-4,11-133280.229000.123.8218.50.474.314.214.3121.31380.210.952056.621.013.84.331.441.021.290.525.140.644.010.1813.60.970.430.703430.51302
126-792A126-792A-10H-3,38-401913388.699700.055.3720.20.342.200.711.984.61930.090.601898.627.318.75.701.321.371.540.706.631.094.790.2510.01.050.440.703460.51303
126-792E 126-792E-3R-1,1-338154.8227000.034.868.20.181.581.225.4107.11640.180.8524012.321.215.03.890.840.831.340.424.410.874.570.3615.81.680.650.703310.51304
126-792E126-792E-9R-1,80-8239213.4164000.054.6912.10.221.471.255.968.91950.562.8355222.344.517.64.270.410.881.040.564.741.094.700.4526.67.091.710.704950.51274
126-792E126-792E-19R-1,44-4643309.45106000.054.4224.10.494.154.013.2126.91430.211.152104.514.612.14.051.311.031.550.575.671.213.260.0931.80.610.390.703730.51248