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Deinstitutionalisation of psychiatric patients since the 1980s has introduced a new population and a new land use to New Zealand's urban areas. This paper reviews the geography of deinstitutionalisation, and investigates whether the North American phenomenon of a service-dependent ghetto can be identified in Dunedin. 相似文献
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The Neoproterozoic Aries kimberlite was emplaced in the centralKimberley Basin, Western Australia, as a NNNE-trendingseries of three diatremes infilled by lithic-rich kimberlitebreccias. The breccias are intruded by hypabyssal macrocrysticphlogopite kimberlite dykes that exhibit differentiation toa minor, high-NaSi, olivinephlogopiterichteritekimberlite, and late-stage macrocrystic serpentinediopsideultramafic dykes. Mineralogical and geochemical evidence suggeststhat the high-NaSi, olivinephlogopiterichteritekimberlite was derived from the macrocrystic phlogopite kimberliteas a residual liquid following extended phlogopite crystallizationand the assimilation of country rock sandstone, and that themacrocrystic serpentinediopside ultramafic dykes formedas mafic cumulates from a macrocrystic phlogopite kimberlite.Chemical zonation of phlogopitebiotite phenocrysts indicatesa complex magmatic history for the Aries kimberlite, with theearly inheritance of a range of high-Ti phlogopitebiotitexenocrysts from metasomatized mantle lithologies, followed bythe crystallization of a population of high-Cr phlogopite phenocrystswithin the spinel facies lithospheric mantle. A further oneto two phlogopitebiotite overgrowth rims of distinctcomposition formed on the phlogopite phenocrysts at higher levelsduring ascent to the surface. Ultra-violet laser 40Ar/39Ar datingof mica grain rims yielded a kimberlite eruption age of 815·4± 4·3 Ma (95% confidence). 40Ar/39Ar laser profilingof one high-Ti phlogopite-biotite macrocryst revealed a radiogenic40Ar diffusive loss profile, from which a kimberlite magma ascentduration from the spinel facies lithospheric mantle was estimated(assuming an average kimberlite magma temperature of 1000°C),yielding a value of 0·232·32 days for thenorth extension lobe of the Aries kimberlite. KEY WORDS: 40Ar/39Ar; diamond; kimberlite; mantle metasomatism; phlogopitebiotite 相似文献
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BRENDAN J. GLEESON 《New Zealand geographer》1995,51(1):42-48
One outcome of the Resource Management Act 1991, especially the provisions of s.94, is liberalised public notification of resource consent applications. A market for consent has emerged, in which applicants financially compensate local communities as a way of securing public support for development proposals. Consent purchasing, however, raises diliemnas for regulatory planners and social equity concerns for local communities. 相似文献
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