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Bauxites of the NSW Southern Highlands

Taylor, G; Eggleton, Richard

Description

The Southern Highlands of New South Wales between Goulburn and Moss Vale have long been known to contain scattered deposits of bauxite associated with Paleogene basalts. They are currently the subject of an exploration licence held by Australian Bauxite Ltd. Mostly the bauxites overlie the basalt or unconsolidated sub-basaltic Paleogene sediments. Most previous studies suggest the bauxites are formed by in situ weathering of the basalt. This study shows that all the bauxite deposits occur...[Show more]

dc.contributor.authorTaylor, G
dc.contributor.authorEggleton, Richard
dc.date.accessioned2015-12-13T22:15:35Z
dc.identifier.issn0812-0099
dc.identifier.urihttp://hdl.handle.net/1885/70472
dc.description.abstractThe Southern Highlands of New South Wales between Goulburn and Moss Vale have long been known to contain scattered deposits of bauxite associated with Paleogene basalts. They are currently the subject of an exploration licence held by Australian Bauxite Ltd. Mostly the bauxites overlie the basalt or unconsolidated sub-basaltic Paleogene sediments. Most previous studies suggest the bauxites are formed by in situ weathering of the basalt. This study shows that all the bauxite deposits occur unconformably above pisolithic basalt, Paleogene sediments or weathered Paleozoic rocks, and that they contain materials only formed at or near the surface including poorly diffracting materials and maghemite. Most also contain significant quartz. Most bauxites also show signs that they have been chemically active over a long period with abundant gibbsite cements, pseudomorphs and void fillings as well as abundant hematite and goethite. These bauxites, like those at Weipa, are formed by the erosion, transport and deposition of bauxitic pisoliths in valleys as the landscape evolved. The pisoliths are inferred to have originated from weathered basalt profiles and have been concentrated by reworking.
dc.publisherBlackwell Publishing Ltd
dc.sourceAustralian Journal of Earth Sciences
dc.subjectKeywords: Bryophyta basalt; bauxite; bauxite chemistry; bauxite mineralogy; landscape history; transported pisoliths
dc.titleBauxites of the NSW Southern Highlands
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume62
dc.date.issued2015
local.identifier.absfor049999 - Earth Sciences not elsewhere classified
local.identifier.ariespublicationa383154xPUB2322
local.type.statusPublished Version
local.contributor.affiliationTaylor, G, University of Canberra
local.contributor.affiliationEggleton, Richard, College of Physical and Mathematical Sciences, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.issue3
local.bibliographicCitation.startpage341
local.bibliographicCitation.lastpage363
local.identifier.doi10.1080/08120099.2015.1021836
dc.date.updated2019-08-11T08:16:09Z
local.identifier.scopusID2-s2.0-84930582229
local.identifier.thomsonID000355592600001
CollectionsANU Research Publications

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