Zobrazeno 1 - 10
of 11
pro vyhledávání: '"D. J. Whitford"'
Autor:
D. J. Whitford, B. Zhou
Publikováno v:
Australian Journal of Earth Sciences. 41:331-340
The Mt Wright Volcanics are located in the Wonominta Block of northwestern New South Wales. Detailed regional mapping has shown that the block is a composite tectonic unit and that the metavolcanic rocks described as the Mt Wright Volcanics may have
Publikováno v:
Geological Society, London, Special Publications. 62:155-158
Autor:
J. Pullar, D. J. Whitford
Publikováno v:
The APPEA Journal. 47:251
Australia’s large natural gas resource offers the prospect of a secure and competitive supply of transport, domestic and industrial fuels, lower emissions and an opportunity for significant wealth generation. Although the use of gas is growing fast
Publikováno v:
The APPEA Journal. 34:320
An understanding of the tinting of basin evolution is fundamental to the development of successful play concepts. The Sm-Nd geochronometer can be used to determine quantitatively the `average' age at which segments of continental crust have been extr
Autor:
P. A. Jezek, D. J. Whitford
Publikováno v:
Contributions to Mineralogy and Petrology. 68:141-150
The Banda arc of eastern Indonesia manifests the collision of a continent and an intra-oceanic island arc. The presently active arc is located on what appears to be oceanic crust whereas the associated subduction trench is underlain by continental cr
Publikováno v:
Nuclear Instruments and Methods. 156:541-546
We have developed a new method for determining the isotopic composition of lithium that makes use of the reactions 6Li(d, σ)4He, 7Li(d, σ)5He∗(n)4He and 7Li(d, n)8Be∗ (σ)4He. The σ-particles from these reactions are observed with surface barr
Publikováno v:
Earth and Planetary Science Letters. 51:41-44
The isotopic composition of lithium has been determined in two achondrites and seven chondrites (including two carbonaceous chondrites). No significant variations in the 7 Li/ 6 Li at the 1% level were found. Our results set upper limits of 1 × 10 1
Publikováno v:
Contributions to Mineralogy and Petrology. 70:341-356
Since Mesozoic time, Java and Bali have formed part of an evolving system of island arcs comprising the Sunda arc of Indonesia. The present tectonic setting is relatively simple with subduction occurring at the Java Trench to the south. A north-dippi
Autor:
M. A. Cameron, D. J. Whitford
Publikováno v:
Canadian Journal of Earth Sciences. 24:1498-1500
Lesher et al. claim that, with certain limitations, prospective horizons for base-metal sulfide deposits in the Superior Province of Canada can be identified from the trace-element characteristics of felsic metavolcanic host rocks. This claim has far
Publikováno v:
Geology. 5:571
The eastern Sunda and Banda arcs are characterized by an anomalous tectonic setting when compared with most other island arcs. Although the volcanic arc appears to be underlain by oceanic crust, the trough and sea floor beyond appear to be underlain