Authors / CoAuthors
Ollier, C.D. | Chan, R.A. | Craig, M.A. | Gibson, D.L.
Abstract
The regolith of the Kalgoorlie region includes saprolite in deep weathering profiles, and a range of surficial deposits, including colluvium, alluvium, and duricrusts, the distribution of which is the result of a long geological and geomorphic evolution. The generally accepted model of landscape evolution, with an old lateritised plateau being replaced by a younger plateau, is shown to be oversimplified. Features in the saprolite indicate changes in the former position of water tables. Sand plains are essentially confined to areas of granite; and red earths, to greenstone belts. Neither of these appears to have any significant aeolian component. Ferricrete is generally unconformable over various substrates: it originally formed on lower slopes, and occupies high sites in the present landscape because of repeated inversion of relief. Silcrete appears to have the same landscape relationships. In a new geomorphic chronology of the region regolith formation is treated as an integral part of the geological history since the Permian.
Product Type
document
eCat Id
81228
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
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Keywords
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- GA PublicationJournal
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- WA
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_External
Publication Date
1988-01-01T00:00:00
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geoscientificInformation
Series Information
BMR Journal of Australian Geology and Geophysics 10:4:309-321
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Unknown
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Extents
[-32.67, -27.07, 119.06, 123.89]
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