Toba Tephra across India
| Cobertura |
MEDIAN LATITUDE: 14.129891 * MEDIAN LONGITUDE: 87.129297 * 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 |
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| Data(s) |
08/12/1998
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| Resumo |
A controversy currently exists regarding the number of Toba eruptive events represented in the tephra occurrences across peninsular India. Some claim the presence of a single bed, the 75,000-yr-old Toba tephra; others argue that dating and archaeological evidence suggest the presence of earlier Toba tephra. Resolution of this issue was sought through detailed geochemical analyses of a comprehensive suite of samples, allowing comparison of the Indian samples to those from the Toba caldera in northern Sumatra, Malaysia, and, importantly, the sedimentary core at ODP Site 758 in the Indian Ocean - a core that contains several of the earlier Toba tephra beds. In addition, two samples of Toba tephra from western India were dated by the fission-track method. The results unequivocally demonstrate that all the presently known Toba tephra occurrences in peninsular India belong to the 75,000 yr B.P. Toba eruption. Hence, this tephra bed can be used as an effective tool in the correlation and dating of late Quaternary sedimentary sequences across India and it can no longer be used in support of a middle Pleistocene age for associated Acheulian artifacts. |
| Formato |
application/zip, 2 datasets |
| Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.754857 doi:10.1594/PANGAEA.754857 |
| Idioma(s) |
en |
| Publicador |
PANGAEA |
| Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
| Fonte |
Supplement to: Westgate, John A; Shane, Philip AR; Pearce, Nicholas JG; Perkins, William T; Korisettar, Ravi; Chesner, Craig A; Williams, Martin AJ; Acharyya, Subhrangsu K (1998): All Toba Tephra Occurrences across Peninsular India Belong to the 75,000 yr B.P. Eruption. Quaternary Research, 50(1), 107-112, doi:10.1006/qres.1998.1974 |
| Palavras-Chave | #121-758; Age; AGE; Age, standard deviation; Age std dev; Al2O3; Al2O3 std dev; Aluminium oxide; Aluminium oxide, standard deviation; Area; Area/locality; Ba; Barium; Caesium; Calcium oxide; Calcium oxide, standard deviation; CaO; CaO std dev; Ce; Cerium; Chlorine; Chlorine, standard deviation; Cl; Cl std dev; COMPCORE; Composite Core; Cs; Dy; Dysprosium; Electron microprobe; Er; Erbium; Eu; Europium; Event; FeO; FeO std dev; G. angiporoides; Gadolinium; Gd; Globigerina angiporoides; H2O; H2O std dev; Hafnium; Hf; Ho; Holmium; ICP-MS, VG-Plasma-Quad 2; Indian Ocean; Iron oxide, FeO; Iron oxide, FeO, standard deviation; Joides Resolution; K2O; K2O std dev; La; Label; Lanthanum; Latitude; LATITUDE; Leg121; Longitude; LONGITUDE; Lu; Lutetium; Magnesium oxide; Magnesium oxide, standard deviation; Manganese oxide; Manganese oxide, standard deviation; MgO; MgO std dev; MnO; MnO std dev; N; Na2O; Na2O std dev; Nb; Nd; Neodymium; Niobium; Ocean Drilling Program; ODP; ODP sample designation; Potassium oxide; Potassium oxide, standard deviation; Pr; Praseodymium; Rb; Rubidium; Samarium; Sample amount; Sample code/label; Silicon dioxide; Silicon dioxide, standard deviation; SiO2; SiO2 std dev; Sm; Sodium oxide; Sodium oxide, standard deviation; Sr; Strontium; Ta; Tantalum; Tb; Terbium; Th; Thorium; Thulium; TiO2; Titanium oxide; Tm; total iron; U; Uranium; Water in rock; Water in rock, standard deviation; Y; Yb; Ytterbium; Yttrium; Zirconium; Zr |
| Tipo |
Dataset |
