Geochemistry, mineral composition and Ar40/Ar39 ages of dolerites from ODP Leg 180 sites
| Cobertura |
MEDIAN LATITUDE: -9.478211 * MEDIAN LONGITUDE: 151.758314 * SOUTH-BOUND LATITUDE: -9.585160 * WEST-BOUND LONGITUDE: 151.572580 * NORTH-BOUND LATITUDE: -9.111600 * EAST-BOUND LONGITUDE: 152.763600 * DATE/TIME START: 1998-06-27T08:00:00 * DATE/TIME END: 1998-08-05T04:30:00 |
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| Data(s) |
01/08/2001
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| Resumo |
New trace element analyses are presented for Leg 180 dolerites, basalts from the Papuan Ultramafic Belt (PUB), and basement rocks of Woodlark Island. The Leg 180 dolerites are similar to those from Woodlark Island in being derived from an enriched source but differ from the PUB, which came from a source similar to normal mid-ocean ridge basalts. A reliable 40Ar/39Ar age of 54.0 ± 1.0 Ma has been obtained by step heating of a whole-rock sample from Site 1109, and a similar but less reliable age was obtained for a sample from Site 1118. Plagioclase from Site 1109 did not give a meaningful age. This age is broadly similar to ages from the Dabi volcanics of the nearby Cape Vogel and for the PUB. |
| Formato |
application/zip, 3 datasets |
| Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.786805 doi:10.1594/PANGAEA.786805 |
| Idioma(s) |
en |
| Publicador |
PANGAEA |
| Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
| Fonte |
Supplement to: Brooks, Kent; Tegner, Christian (2001): Affinity of the Leg 180 dolerites of the Woodlark Basin: geochemistry and age. In: Huchon, P; Taylor, B; Klaus, A (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 180, 1-18, doi:10.2973/odp.proc.sr.180.155.2001 |
| Palavras-Chave | #39Ar; 40Ar/36Ar; 40Ar/36Ar std dev; Ab; Age, 40Ar/39Ar Argon-Argon; Age, dated; Age, dated standard deviation; Age dated; Age std dev; Al2O3; Albite; Aluminium oxide; An; Anorthite; Ap; Apatite; apparent Plateau; Argon 39; Argon 40/Argon 36; Argon 40/Argon 36, standard deviation; Ba; Barium; Caesium; Calcium oxide; CaO; Ce; Cerium; Chromium; Co; Cobalt; Cr; Cs; Di; Diopside; Dy; Dysprosium; Elements, total; Er; Erbium; Eu; Europium; Event; Fe2O3; Fe3O4; FeO; Ga; Gadolinium; Gallium; Gd; Hafnium; Hf; Ho; Holmium; Hyp; Hypersthene; ICP-MS, Inductively coupled plasma - mass spectrometry; Ilm; Ilmenite; inverse isochron; Iron oxide, Fe2O3; Iron oxide, FeO; K2O; La; Lanthanum; Lead; LOI; Loss on ignition; Lu; Lutetium; Magnesium oxide; Magnetite; Manganese; Manganese oxide; mean squares of weighted deviations; MgO; Mn; MnO; N; Na2O; Nb; Nd; Neodymium; Ni; Nickel; Niobium; Ocean Drilling Program; ODP; ODP sample designation; Ol; Olivine; Or; Orthoclase; P2O5; Parameter; Pb; Phosphorus oxide; Potassium oxide; Pr; Praseodymium; Quartz; Qz; Rb; Rock; Rock type; Rubidium; Samarium; Sample amount; Sample code/label; Sc; Scandium; Silicon dioxide; SiO2; Sm; Sodium oxide; Sr; Strontium; Ta; Tantalum; Tb; Terbium; Th; Thorium; Thulium; TiO2; Titanium oxide; Tm; total; U; Uranium; V; Vanadium; X-ray fluorescence (XRF); Y; Yb; Ytterbium; Yttrium; Zirconium; Zr |
| Tipo |
Dataset |
