Matches in SemOpenAlex for { <https://semopenalex.org/work/W146962296> ?p ?o ?g. }
Showing items 1 to 73 of
73
with 100 items per page.
- W146962296 abstract "The High Point prospect is located on the northern slopes of Mount Charter in westernTasmania within the Que-Hellyer Volcanics of the Cambrian Mount Read Volcanic belt. Themain lithologies include intrusive sub-ophitic dolerite, pyritic black shales, andesite dykes andsills, coherent basalt units, basalt breccias, dacite lavas and dacite breccias. The prehnitepumpellyitegrade of metamorphism recognised in the area is attributed to the DevonianTabberabberan Orogeny. The structure of the area is dominated by N.E.-plunging synclinesand by the Henty Fault zone to the east of the region, and the Mount Charter fault immediatelyto the southwest of the study area.The previously enigmatic High Point dolerites are now considered to be broadly comagmaticwith the upper basalts of the Que Hellyer Volcanics based on geologic relationshipsand geochemical analyses. Similarly, andesite units in the area are geochemical equivalents ofthe hornblende andesites of the southern Central Volcanic Complex. Dacites units in the HighPoint region correlate with the 'mixed sequence' dacites of the Que-Hellyer Volcanics (part ofsuite Ill of Crawford et al., 1992).Alteration of the High Point lithologies is considered to be a low intensity, lowtemperature equivalent of VHMS-related alteration at the Que River and Hellyer massivesulphide deposits. Typical alteration assemblages, considered to be Cambrian, include; silicasericitein dacites, chlorite in basalts, sericite-fuchsite in the upper basalts and silica-albite in theandesites. Epidote alteration overprints the Cambrian alteration assemblages and is likely to berelated to the Devonian Tabberabberan Orogeny.The High Point prospect contains low grade, disseminated sphalerite mineralisationwhich occurs as fine-grained anhedral masses associated with minor galena and pyrite, and ispredominantly hosted within the basalts and andesites. Lead isotope data suggests that thedisseminated mineralisation is Cambrian and has a target signature similar to that of the QueRiver massive sulphide deposit, Zn ratios also indicate that the mineralisation is CambrianVHMS style. Vein style sphalerite mineralisation is associated with minor pyrite, galena, iiichalcopyrite and pyrrhotite and is attributed to remobilisation during the DevonianTabberabberan Orogeny.The heat source for the Cambrian mineralisation and alteration is interpreted to be relatedto the emplacement of the andesite dykes and sills. Hydrothermal fluids have preferentiallyprecipitated sphalerite within the ba~alts and andesites, particularly below the contact of the QueRiver Shale. The Que River Shale has behaved as a chemical trap for the mineralisedhydrothermal fluids. The mineralisation is currently subeconomic however, potential exists foreconomic mineralisation deeper within the stratigraphic sequence." @default.
- W146962296 created "2016-06-24" @default.
- W146962296 creator A5043773892 @default.
- W146962296 date "1995-01-01" @default.
- W146962296 modified "2023-09-27" @default.
- W146962296 title "Mafic-hosted zinc mineralisation,High Point, western Tasmania" @default.
- W146962296 hasPublicationYear "1995" @default.
- W146962296 type Work @default.
- W146962296 sameAs 146962296 @default.
- W146962296 citedByCount "0" @default.
- W146962296 crossrefType "dissertation" @default.
- W146962296 hasAuthorship W146962296A5043773892 @default.
- W146962296 hasConcept C107504934 @default.
- W146962296 hasConcept C112764850 @default.
- W146962296 hasConcept C120806208 @default.
- W146962296 hasConcept C127313418 @default.
- W146962296 hasConcept C151730666 @default.
- W146962296 hasConcept C161509811 @default.
- W146962296 hasConcept C167284885 @default.
- W146962296 hasConcept C17409809 @default.
- W146962296 hasConcept C192241223 @default.
- W146962296 hasConcept C193944797 @default.
- W146962296 hasConcept C2777844515 @default.
- W146962296 hasConcept C2778357522 @default.
- W146962296 hasConcept C2779321686 @default.
- W146962296 hasConcept C2779870107 @default.
- W146962296 hasConcept C36986328 @default.
- W146962296 hasConcept C5900021 @default.
- W146962296 hasConcept C62074269 @default.
- W146962296 hasConceptScore W146962296C107504934 @default.
- W146962296 hasConceptScore W146962296C112764850 @default.
- W146962296 hasConceptScore W146962296C120806208 @default.
- W146962296 hasConceptScore W146962296C127313418 @default.
- W146962296 hasConceptScore W146962296C151730666 @default.
- W146962296 hasConceptScore W146962296C161509811 @default.
- W146962296 hasConceptScore W146962296C167284885 @default.
- W146962296 hasConceptScore W146962296C17409809 @default.
- W146962296 hasConceptScore W146962296C192241223 @default.
- W146962296 hasConceptScore W146962296C193944797 @default.
- W146962296 hasConceptScore W146962296C2777844515 @default.
- W146962296 hasConceptScore W146962296C2778357522 @default.
- W146962296 hasConceptScore W146962296C2779321686 @default.
- W146962296 hasConceptScore W146962296C2779870107 @default.
- W146962296 hasConceptScore W146962296C36986328 @default.
- W146962296 hasConceptScore W146962296C5900021 @default.
- W146962296 hasConceptScore W146962296C62074269 @default.
- W146962296 hasLocation W1469622961 @default.
- W146962296 hasOpenAccess W146962296 @default.
- W146962296 hasPrimaryLocation W1469622961 @default.
- W146962296 hasRelatedWork W1015636254 @default.
- W146962296 hasRelatedWork W1532864797 @default.
- W146962296 hasRelatedWork W1699739657 @default.
- W146962296 hasRelatedWork W1770170891 @default.
- W146962296 hasRelatedWork W1904218968 @default.
- W146962296 hasRelatedWork W1964841052 @default.
- W146962296 hasRelatedWork W2017209895 @default.
- W146962296 hasRelatedWork W2047188505 @default.
- W146962296 hasRelatedWork W2059867089 @default.
- W146962296 hasRelatedWork W2085345382 @default.
- W146962296 hasRelatedWork W209974954 @default.
- W146962296 hasRelatedWork W2182867662 @default.
- W146962296 hasRelatedWork W2267080513 @default.
- W146962296 hasRelatedWork W2292866310 @default.
- W146962296 hasRelatedWork W2531102337 @default.
- W146962296 hasRelatedWork W258319228 @default.
- W146962296 hasRelatedWork W2789767878 @default.
- W146962296 hasRelatedWork W282995211 @default.
- W146962296 hasRelatedWork W372649142 @default.
- W146962296 hasRelatedWork W2741076898 @default.
- W146962296 isParatext "false" @default.
- W146962296 isRetracted "false" @default.
- W146962296 magId "146962296" @default.
- W146962296 workType "dissertation" @default.