Citation:

qres.1998.1974

Name: (Table 2) Average major-element composition of glass shards from Toba Tephra Beds in Sumatra, Malaysia, India, and the Indian Ocean
Published: 1998
License: https://creativecommons.org/licenses/by/3.0/

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Project(s):

Ocean Drilling Program (ODP)

Coverage:

Median Latitude: 17.531656 * Median Longitude: 82.454183 * South-bound Latitude: 2.684500 * West-bound Longitude: 73.500000 * North-bound Latitude: 29.400000 * East-bound Longitude: 101.716700

Date/Time Start: 1988-06-15T00:00:00 * Date/Time End: 1988-06-15T00:00:00

Minimum Elevation: -2935.0 m * Maximum Elevation: -2935.0 m

Event(s):

121-758 * Latitude: 5.384067 * Longitude: 90.361167 * Date/Time Start: 1988-06-15T00:00:00 * Date/Time End: 1988-06-15T00:00:00 * Elevation: -2935.0 m * Penetration: 782.2 m * Recovery: 561.9 m * Location: Indian Ocean * Campaign: * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 84 cores; 782.2 m cored; 0 m drilled; 71.8% recovery

Comment:

Positions are estimated from map. Analyses done on a Cameca SX-50 wavelength dispersive electron microprobe operating at 15 kV accelerating voltage, 20-mm beam diameter, 6nA beam current, and counting times of 20-55 s with Na and Al being analyzed first, as recommended by Morgan and London (1996). Standardization achieved by use of mineral and glass standards. Analyses recast to 100% on a water-free basis. All samples are rhyolites (IUGS classification, Le Bas et al., 1986).

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event
2	LATITUDE	Latitude				Geocode
3	LONGITUDE	Longitude				Geocode
4	AGE	Age	ka BP			Geocode
5	Age, standard deviation	Age std dev	±	Westgate, John A
6	Sample code/label	Sample label		Westgate, John A	DSDP/ODP/IODP sample designation
7	Area/locality	Area		Westgate, John A
8	Silicon dioxide	SiO2	%	Westgate, John A	Electron microprobe (EMP)
9	Silicon dioxide, standard deviation	SiO2 std dev	±	Westgate, John A	Electron microprobe (EMP)
10	Titanium dioxide	TiO2	%	Westgate, John A	Electron microprobe (EMP)
11	Globigerina angiporoides	G. angiporoides		Westgate, John A	Electron microprobe (EMP)
12	Aluminium oxide	Al2O3	%	Westgate, John A	Electron microprobe (EMP)
13	Aluminium oxide, standard deviation	Al2O3 std dev	±	Westgate, John A	Electron microprobe (EMP)
14	Iron oxide, FeO	FeO	%	Westgate, John A	Electron microprobe (EMP)	total iron
15	Iron oxide, FeO, standard deviation	FeO std dev	±	Westgate, John A	Electron microprobe (EMP)
16	Manganese oxide	MnO	%	Westgate, John A	Electron microprobe (EMP)
17	Manganese oxide, standard deviation	MnO std dev	±	Westgate, John A	Electron microprobe (EMP)
18	Magnesium oxide	MgO	%	Westgate, John A	Electron microprobe (EMP)
19	Magnesium oxide, standard deviation	MgO std dev	±	Westgate, John A	Electron microprobe (EMP)
20	Calcium oxide	CaO	%	Westgate, John A	Electron microprobe (EMP)
21	Calcium oxide, standard deviation	CaO std dev	±	Westgate, John A	Electron microprobe (EMP)
22	Sodium oxide	Na2O	%	Westgate, John A	Electron microprobe (EMP)
23	Sodium oxide, standard deviation	Na2O std dev	±	Westgate, John A	Electron microprobe (EMP)
24	Potassium oxide	K2O	%	Westgate, John A	Electron microprobe (EMP)
25	Potassium oxide, standard deviation	K2O std dev	±	Westgate, John A	Electron microprobe (EMP)
26	Chlorine	Cl	%	Westgate, John A	Electron microprobe (EMP)
27	Chlorine, standard deviation	Cl std dev	±	Westgate, John A	Electron microprobe (EMP)
28	Sample amount	N	#	Westgate, John A
29	Water in rock	H2O	%	Westgate, John A	Electron microprobe (EMP)
30	Water in rock, standard deviation	H2O std dev	±	Westgate, John A	Electron microprobe (EMP)

License:

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

Size:

455 data points

Data

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

1 Event	2 Latitude	3 Longitude	4 Age [ka BP]	5 Age std dev [±]	6 Sample label	7 Area	8 SiO2 [%]	9 SiO2 std dev [±]	10 TiO2 [%]	11 G. angiporoides	12 Al2O3 [%]	13 Al2O3 std dev [±]	14 FeO [%]	15 FeO std dev [±]	16 MnO [%]	17 MnO std dev [±]	18 MgO [%]	19 MgO std dev [±]	20 CaO [%]	21 CaO std dev [±]	22 Na2O [%]	23 Na2O std dev [±]	24 K2O [%]	25 K2O std dev [±]	26 Cl [%]	27 Cl std dev [±]	28 N [#]	29 H2O [%]	30 H2O std dev [±]
121-758	5.3840	90.3610	73	4	UT1363	Layer A, Youngest Toba tuff	77.68	0.27	0.08	0.05	12.27	0.13	0.84	0.06	0.08	0.04	0.05	0.02	0.79	0.07	3.16	0.11	4.88	0.13	0.16	0.03	26	1.2	0.6
121-758	5.3840	90.3610	501	5	UT1364	Layer C, Middle Toba tuff	77.57	0.20	0.06	0.05	12.24	0.15	1.02	0.07	0.04	0.03	0.04	0.02	0.63	0.09	3.55	0.20	4.73	0.22	0.12	0.03	20	2.3	0.5
121-758	5.3840	90.3610	840	30	UT1365	Layer E, Oldest Toba tuff	76.05	0.41	0.15	0.08	12.94	0.22	1.23	0.07	0.09	0.04	0.14	0.02	0.89	0.07	4.07	0.11	4.17	0.13	0.27	0.04	16	2.4	1.0
	2.6845	98.8756	73	4	UT1298	Toba caldera, Youngest Toba tuff	77.70	0.18	0.06	0.05	12.21	0.12	0.83	0.06	0.09	0.04	0.04	0.02	0.71	0.04	3.18	0.08	5.03	0.10	0.15	0.03	18	0.9	0.7
	3.0333	101.7167	73	4	UT778	Malaysia, Youngest Toba tuff	77.71	0.29	0.06	0.06	12.16	0.12	0.89	0.07	0.07	0.04	0.05	0.02	0.74	0.07	3.24	0.10	4.93	0.21	0.14	0.04	20	2.2	0.6
	22.3000	76.3000			UT1069	Pawlaghat Place, Narmada River	77.78	0.24	0.05	0.05	12.26	0.14	0.86	0.05	0.05	0.03	0.04	0.02	0.80	0.05	3.08	0.11	4.94	0.17	0.13	0.02	17	2.9	1.4
	20.0000	75.0000			UT1070	Gandhigram Place, Purna River	77.63	0.29	0.05	0.04	12.21	0.18	0.87	0.07	0.06	0.04	0.06	0.02	0.80	0.07	3.13	0.16	5.05	0.18	0.13	0.04	25	2.7	0.6
	22.3000	76.3000			UT1299	Guruwara, Narmada	77.81	0.17	0.05	0.04	12.02	0.12	0.86	0.07	0.03	0.02	0.05	0.01	0.75	0.08	3.24	0.11	5.03	0.13	0.14	0.02	10	1.5	0.5
	29.4000	79.1000			UT1359	Ramnagar, Son Valley	77.76	0.23	0.06	0.04	12.06	0.12	0.88	0.07	0.06	0.03	0.05	0.02	0.76	0.08	3.21	0.11	5.02	0.14	0.15	0.03	11	1.1	0.4
	21.5000	83.0000			UT1358	Pitha mohul, Mohanadi	77.76	0.23	0.03	0.04	12.10	0.14	0.87	0.04	0.06	0.03	0.05	0.02	0.80	0.08	3.08	0.21	5.12	0.09	0.14	0.04	11	1.2	0.9
	14.5000	79.5000			UT1300	Karnool area	77.68	0.24	0.05	0.04	12.12	0.16	0.88	0.07	0.05	0.03	0.06	0.02	0.83	0.07	3.22	0.11	4.96	0.18	0.14	0.03	10	1.4	0.7
	20.0000	75.0000			UT1361	Purna Basin	77.69	0.27	0.09	0.05	12.09	0.15	0.88	0.04	0.05	0.04	0.06	0.02	0.82	0.05	3.14	0.16	5.04	0.08	0.13	0.03	11	1.2	0.4
	19.5000	84.0000			UT1362	Goguparhu, Vansadhara	77.67	0.22	0.07	0.05	12.14	0.18	0.89	0.05	0.06	0.05	0.05	0.01	0.75	0.08	3.24	0.15	4.98	0.13	0.14	0.03	19	1.3	0.5
	29.4000	79.1000			UT1071	Son Valley	77.64	0.12	0.05	0.04	12.14	0.06	0.87	0.06	0.05	0.04	0.04	0.01	0.77	0.07	3.22	0.16	5.09	0.19	0.12	0.02	11	2.5	0.9
	18.0000	73.5000			UT1072	Bori Place, Kukdi River	77.57	0.13	0.05	0.04	12.16	0.11	0.92	0.03	0.07	0.04	0.05	0.01	0.83	0.06	3.17	0.12	5.06	0.07	0.12	0.04	10	2.7	0.6
	29.4000	79.1000			UT1134	Son Valley	77.58	0.29	0.07	0.06	12.12	0.11	0.90	0.06	0.06	0.04	0.06	0.02	0.78	0.09	3.10	0.12	5.18	0.16	0.15	0.03	9	2.0	0.4
	29.4000	79.1000			UT1135	Son Valley	77.71	0.26	0.08	0.08	12.04	0.14	0.85	0.05	0.07	0.04	0.05	0.02	0.74	0.09	3.14	0.17	5.17	0.15	0.14	0.02	10	3.9	3.0
	18.0000	73.5000			UT1068	Bori, Kukdi River, Pune	77.62	0.22	0.07	0.06	12.20	0.14	0.90	0.07	0.07	0.04	0.05	0.02	0.79	0.09	3.17	0.12	5.00	0.10	0.14	0.03	20	2.5	1.2