Citation:

s00410-005-0042-7

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Coverage:

Median Latitude: 12.700000 * Median Longitude: 123.950000 * South-bound Latitude: 12.500000 * West-bound Longitude: 123.800000 * North-bound Latitude: 12.900000 * East-bound Longitude: 124.100000

Event(s):

Bulusan_vocanic_complex * Latitude Start: 12.900000 * Longitude Start: 123.800000 * Latitude End: 12.500000 * Longitude End: 124.100000 * Location: Philippine Sea * Method/Device: Sampling by hand (HAND)

Comment:

Sample postions are a rough estimation from geological map. The Mt. Mayon samples 1968 and 1984 were erupted in the years 1968 and 1984 AD, respectively. 226Ra measurements were completed in the year 2000 AD. All data are as measured, i.e. no age corrections have been applied

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Thorium-234, total	234Th tot	dpm/g	McDermott, Frank
2	Sample code/label	Sample label		McDermott, Frank
3	Area/locality	Area		McDermott, Frank
4	Age, maximum/old	Age max	ka	McDermott, Frank		Bulusan volcanic complex approximate ages based on radiocarbon dating of the Irosin ignimbrite, stratigraphic and geomorphic considerations, while B220 has been dated using K–Ar
5	Age, minimum/young	Age min	ka	McDermott, Frank		Bulusan volcanic complex approximate ages based on radiocarbon dating of the Irosin ignimbrite, stratigraphic and geomorphic considerations, while B220 has been dated using K–Ar
6	Radium-226	226Ra	fg/g	McDermott, Frank	Mass spectrometer Finnigan MAT 262
7	Thorium	Th	mg/kg	McDermott, Frank	Mass spectrometer Finnigan MAT 262
8	Uranium	U	mg/kg	McDermott, Frank	Mass spectrometer Finnigan MAT 262
9	Uranium-238/Thorium-232 ratio	238U/232Th		McDermott, Frank	Mass spectrometer Finnigan MAT 262
10	Thorium-230/Thorium-232 activity ratio	(230Th/232Th)		McDermott, Frank	Mass spectrometer Finnigan MAT 262
11	Thorium-230/Uranium-238 ratio	230Th/238U		McDermott, Frank	Mass spectrometer Finnigan MAT 262
12	Radium-226/Thorium-230 ratio	226Ra/230Th		McDermott, Frank	Mass spectrometer Finnigan MAT 262

License:

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

Size:

61 data points

Data

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

1 234Th tot [dpm/g]	2 Sample label	3 Area	4 Age max [ka]	5 Age min [ka]	6 226Ra [fg/g]	7 Th [mg/kg]	8 U [mg/kg]	9 238U/232Th	10 (230Th/232Th)	11 230Th/238U	12 226Ra/230Th
124.05	B107B	Bulusan volcanic complex	10.000	20		2.049	0.598	0.885	1.070	1.209
124.05	B1-B	Bulusan volcanic complex	35.000	40		7.153	2.296	0.974	0.960	0.986
123.90	B148	Bulusan volcanic complex	>40.000	<400		2.177	0.713	0.993	0.962	0.968
124.00	B220	Bulusan volcanic complex	2140.000			10.540	2.766	0.796	0.793	0.996
123.68	1968	Mt. Mayon	0.032		306.06	1.726	0.572	1.005	1.003	0.998	1.512
123.68	1984	Mt. Mayon	0.016		316.75	1.985	0.603	0.921	0.887	0.963	1.589