Download Basin Formation, Ridge Crest Processes, and Metallogenesis by Loren W. Kroenke, James V. Eade PDF

By Loren W. Kroenke, James V. Eade

The Earth technological know-how sequence of the Circum-Pacific investment for send time was once made to be had via Council for strength and Mineral assets (CPCEMR) the U. S. service provider for foreign improvement, the is designed to show the result of geologie study in USGS, the U. S. workplace of Naval learn (for HIG's and round the Pacific Basin. Topies of curiosity contain 1982 work), the Australian improvement counsel framework geology, petroleum geology, difficult minerals, Bureau, the Australian Bureau of Mineral assets geothermal power, environmental geology, volcanology, (BMR), the hot Zealand Ministry of overseas Affairs, oceanography, tectonics, geophysies, geochemistry, and the hot Zealand Departrnent of medical and commercial purposes of renewable power. The CPCEMR sup­ examine (DSIR), the recent Zealand Geological Survey, ports and publishes result of medical learn that may and the hot Zealand Oceanographic Institute (NZOI). improve the information of power and mineral source Coordination of this system used to be supplied through the U. S. power within the circum-Pacific area. The Earth Sci­ Departrnent of country and the South Pacific utilized Geo­ ence sequence is particularly designed to post papers that technological know-how fee (SOPAC, previously the United comprise new facts and new maps, record on CPCEMR­ Nations-sponsored Committee for the Coordination of backed symposia and workshops, and describe the Joint Prospecting for Mineral assets in South Pacific result of onshore and marine geological and geophysieal Offshore components CCOP/SOP AC) in Fiji. Over one hundred fifty scien­ explorations.

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Extra resources for Basin Formation, Ridge Crest Processes, and Metallogenesis in the North Fiji Basin

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86, p. 2825-2852. , 1984, Seismotectonics of the Fiji Plateau and Lau Basin: Tectonophysics, v. 102, p. 17-32. , 1983, Reports of eathquakes feit in Fiji, 18501940: Mineral Resources Department of Fiji, Report 48, 54 p. , 1985, Focal mechanisms of earthquakes near Fiji: Mineral Resources Department of Fiji, Note. A, 1978, Analysis of palaeomagnetic da ta from the New Hebrides: Bulletin of the Australian Society for Exploration Geophysicists, v. 9, p. 117-123. J. J. , The Western Pacific: Island Ares, Marginal Seas, Geochemistry: University of Western Australia Press, Nedlands, p.

78, p. 3431-3436. , J. Launay, and J. Recy, 1975, Some new evidence on Iithospheric bulges dose to island arcs: Tectonophysics, v. 26, p. 189-196. , J. Launay, J. Recy, and J. MarshalI, 1977, New Hebrides Trench: Subduction rate from associated lithospheric bulge: Canadian Journal of Earth Science, v. 14, p. 250-255. A. H. Woodhouse, 1981, Determination of earthquake source parameters from waveform da ta for studies of global and regional seismicity: Journal of Geophysical Research, v. 86, p. 2825-2852.

The fault planes, however, are oriented oblique to the strike of the ridge, at odds with a simple ridge/transform interpretation. Furthermore, an important question remains in the interpretation of event no. 7. Chinn and Isacks (1983), using the accurate synthetic seismogram method, showed that this event occurred at an anomalous depth of 48 km. This focal depth would be unusual for old oceanic lithosphere, but is enigmatic in this proposed setting of hot, thin, newly-created lithosphere. The occurrence of subcrustal seismieity beneath the Hazel Holme Ridge might be interpreted in terms of rifting of an older, thicker fragment of island are lithosphere.

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