 | | Journal (article/letter/editorial) | | in The DalesGorgeMember,Hamersley Group, Western Australia D. E. AYRES Abstract The HamersleyIron Ore...crystallization from hematiteand by decomposition of siderite. This type of crystallization was also responsiblefor...(1962) aided formationsof the HamersleyRange of Western carbonate-staining identification Australiacontainabundant...Australiacontainabundant iron-richminerals--magnetite, hematite,siderite,ankerite, stilpnomelane, minnesotaite and,lesscommonly...Trendall (1965a) within the Dales Gorge Member of the of Western Australia, some 700 miles from Perth. BrockmanIron |  | | Journal (article/letter/editorial) | | HAMERSLEY ROCKS IN IRON-FORMATION RANGE, WESTERN GENE IN AUSTRALIA L. LABERGE ABSTRACT Altered pyroclasticrocks...theareahasbeenmapped by theGeological Surveyof Western Australia(10). Figure1 is a location mapof thearea....onlyslightlymetamorphosed, andare relativelyflat-lyingin the Wittenoom Gorgearea. Threebanded iron-formations, theMatraMamba...is composed dominantly of chert,iron oxidesand siderite,with variableamountsof minnesotaite, ferruginous...IRON-FORMATIONS MARBLE.BAR ß IRON FORMATIONS NULLAGINEß WITTENOOM • •OLGEEI)A BROCKMAN [] MARRA MAMBA .•TOß• |  | | Journal (article/letter/editorial) | | Asteroid Impact Fallout Units, Pilbara Craton, Western Australia ANDREW Y. GLIKSON ABSTRACT Pioneering studies...deposits in the Hamersley Basin, Pilbara Craton, Western Australia, by B.M. Simonson and S.W. Hassler, document...Bed SMB-1 and SMB-2 impact events, Bee Gorge Member, Wittenoom Formation. The two impact cycles are separated...depth. The ,2.47–2.50 Ga DGS4 (S4 Macroband, Dales Gorge Member, Brockman Iron Formation) fallout units include...example is the Acraman impact structure, South Australia, and the adjoining fallout and tsunami units in |  | | Journal (article/letter/editorial) | | the origin of a banded iron-formation in Western Australia RICHARD H. BECKER Department of Chemistry...iron-formation of the Dales Gorge Member of the Brockman Iron Formation and from the Wittenoom and Duck Creek Dolomite...Formations of the Hamersley Range area of Western Australia. The ironformation carbonates had SCY3values... CLAYTON The Hamersley Iron Province of Western Australia contains examples of extremely well-preserved...Iron Province lies on the northwest coast of Australia, between latitudes 21’30’ and 23’30’5 and longitudes |  | | Journal (article/letter/editorial) | | hematite ore deposit at Mount Whaleback, Western Australia Received: 20 February 2004 / Accepted: 5 August...martite-microplaty hematite ore deposits in northwest Australia remains a contentious topic in part because important...to unaltered black Mount McRae Shale from Wittenoom Gorge in the north and altered black and red Mount...carbonate-rich, silica-poor rocks in the overlying Dales Gorge Member at Mount Whaleback is consistent with pervasive...James Cook University, 4811 Townsville, QLD, Australia E-mail: Adam.Webb@jcu.edu.au Present address: |  | | Journal (article/letter/editorial) | | constraints from across the Hamersley Province, Western Australia Adam D. Webb a,*, Gerald R. Dickens a,b, Nicholas...James Cook University, Townsville, QLD 4811, Australia b Department of Earth Sciences, Rice University...Hamersley Province, Western Australia, where banded ironformation (BIF) of the Dales Gorge Member has been...samples of the Dales Gorge Member and surrounding shales from the type section near Wittenoom and the Mt. Whaleback...Whaleback mine near Newman. Profound chemical and mineralogical changes suggest that after early diagenesis |  | | Journal (article/letter/editorial) | | Upper Mount McRae Shale at Mount Whaleback, Western Australia – implications for iron ore genesis A. D....genesis of giant hematite ore deposits in northwest Australia remains a contentious topic in part because key... Compared with unaltered black shale from Wittenoom Gorge in the north and altered black and red shale...Introduction The Hamersley Province of northern Western Australia is one of the largest iron ore producing regions...Billiton Iron Ore, PO Box 655, Newman WA 6753, Australia Department of Earth Sciences, Rice University |  | | Journal (article/letter/editorial) | | from the late Archean (~2.5 Ga) Hamersley Basin, Australia and the early Archean (~3.8 Ga) Isua Supracrustal...facies: oxide (magnetite, hematite), carbonate (siderite, ankerite, Fe–dolomite and, less commonly, calcite)...characteristics of iron-rich carbonates such as siderite [FeCO3] and ankerite [Ca0.5(Fe,Mg)0.5CO3] in BIFs...Mesoband Type Dales Gorge Member, Brockman Iron Formation Drill core from Wittenoom Gorge Area (118° 28′ E;...8 δ13C (‰)c δ56Fe (‰) d Ankerite Siderite Ankerite/Siderite − 11.41 − 15.05 − 6.98 − 9.24 ± 0.03 |  | | Journal (article/letter/editorial) | | Brockman Iron Formation, Hamersley Basin, Western Australia: evidence for a major asteroid impact in simatic...Australian National University, Canberra, ACT 0200, Australia Received 26 May 2003; received in revised form...Dales Gorge Member (2.47^2.50 Ga), Brockman Iron Formation, Hamersley Group, Western Australia, displays... Dales Gorge Iron Member, Brockman Iron Formation, Hamersley Group, Hamersley Basin, Western Australia...and stratigraphic column, Hamersley Basin, Western Australia (modi¢ed after Simonson and Hassler [13]) |  | | Journal (article/letter/editorial) | | BIF/argillite units, Hamersley Basin, Pilbara Craton, Western Australia Andrew Glikson ⁎, John Vickers Department...Australian National University, Canberra, A.C.T. 0200, Australia Received 23 September 2006; received in revised...Archean Jeerinah Formation, Fortescue Group, Western Australia. Aust. J. Earth Sci. 47 (2000) 315–325; B...asteroid impact fallout units, Pilbara Craton, Western Australia. Astrobiology 4 (2001) 19–50; S.W. Hassler...layers in the Fortescue and Hamersley Groups, Western Australia: stratigraphic and depositional implications |  | | Journal (article/letter/editorial) | | Precambrian banded iron-formation. Hamersley Range. Western Australia RICHARD H. BECKER* Department of Chemistry...were determined for quartz, magnetite, ankerite, siderite, riebeckite, hematite and talc in samples of banded...banded iron-formation from the Dales Gorge Member of the Brockman Iron Formation and for quartz, dolomite...dolomite and calcite in samples of the Wittenoom Dolomite and Duck Creek Dolomite Formations, all from the...the Hamersley Range area of Western Australia. Additionally, in order to interpret the measured isotope |  | | Journal (article/letter/editorial) | | stilpnomelane-rich layers in iron-formationfrom Western Australia. The presenceof thesealtered pyroclasticlayers...opportunityto studythe BrockmanIron-formation in Western Australia, and found abundant evidenceof volcanic activity...pyroclasticrocksin the BrockmanIron-formation in Western Australia. The writer spent 2 monthsin South Africa...water-table the iron mineralogychangesdrastically;siderite,magnetite,stilpnomelane and minnesotaite are common;hematiteand...transitionswere seenin ntunerousdrill coresand in mine workingsin the Kuruman and Koegasareasin the CapeProvince |  | | Journal (article/letter/editorial) | | University of Western Australia, 35 Stirling Highway, Perth, Western Australia 6009, Australia *Corresponding...and its depositional textures. Very fine grained siderite and hematite in laminated BIFs post-date dehydration...sedimentary basins such as the Hamersley basin, Western Australia and the Transvaal basin of South Africa. Major...America and the coeval Frere Formation in Western Australia, and the Rapitan-type iron formations deposited...oxides (magnetite, hematite, goethite), carbonates (siderite, ankerite, dolomite, calcite), and silicates (greenalite |  | | Journal (article/letter/editorial) | | Downs Iron Ore Deposit, Hamersley Province, Western Australia DESMOND F. LASCELLES† Centre for Exploration... University of Western Australia, 35 Stirling Highway, Crawley, W.A. 6009, Australia Abstract The banded...Archean to Proterozoic Hamersley Group of Western Australia. The main orebody extends to 260 m below the...after calcining. Karst erosion of the overlying Wittenoom Formation has produced steep-sided buried valleys...including remnants of Robe Pisolite Formation, bedded siderite, hematite gravels, red ochreous detrital material |  | | Journal (article/letter/editorial) | | iron-formation of the Dales Gorge Member, HamersleyGroup, Western Australia T,cxesHr MIveNor eNo ConNeI-Is...riebeckite formation in the Dales Gorge Member, Hamersley Group, Western Australia. Computed values of Sie6,...assemblagesin the iron-formations of the Dales Gorge Member can be divided into two groups, carbonate-free...temperature formations of the Hamersley Group of Western Australia pressureis bounded by the lower part ofthe...riebeckite-bearing of riebeckite within the Dales Gorge Member of the iron-formations have been described |  | | Book | | Perth, W.A., Australia and R.C. MORRIS Division of Mineralogy, CSIRO, Wembley, W.A., Australia ELSEVIER...6 9 5 Burke Road, Camberwell, Victoria 3124, Australia. P. CLOUD Department of Geological Sciences...House, 6 6 Adelaide Terrace, Perth Western Australia 6000, Australia. W.E. EWERS Unit 1 6 , 1 2 8 Forrest...Forrest Street, Peppermint Grove, Western Australia 6011. Australia. B.J. FRYER Department o f Geology...6 9 5 Burke Road, Camberwell, Victoria 3124, Australia. G.A. GROSS Geological Survey of Canada, 6 0 |  | | Journal (article/letter/editorial) | | Neoarchean-Paleoproterozoic Dales Gorge Member (Brockman Iron Formation, Hamersley Basin, Australia) Pillar de Oliveira...Neoarchean-Paleoproterozoic Dales Gorge Member (Brockman Iron Formation, Hamersley Basin, Australia), Precambrian Research...NeoarcheanPaleoproterozoic Dales Gorge Member (Brockman Iron Formation, Hamersley Basin, Australia) Pillar de Oliveira...The Dales Gorge Member (DGM) of the Brockman Iron Formation (Hamersley Basin, Western Australia) is a classic...photographs from three cores drilled in the Wittenboom Gorge vicinity is examined using well established methods |  | | Journal (article/letter/editorial) | | episodes, Kaapvaal (South Africa) and Pilbara (Western Australia) Cratons Andrew Y. Glikson ⁎ Research School...Australian National University, Canberra, A.C.T. 0200, Australia Received 8 April 2007; received in revised form...relationships are identified in the Pilbara Craton, Western Australia. Evidence for enrichment of seawater in ferrous...stratigraphic units in the Pilbara Craton, Western Australia (Fig. 3). Here an abrupt break occurs between...volcanic–BIF association and overlying conglomerates (Gorge Creek Group, de Grey Group), a boundary A.Y. Glikson |  | | Journal (article/letter/editorial) | | of the world--that of the HamersleyBasin of Australia--hasdefinedthe total amountof iron and t•heprobable...these water masseswere saturated with respect to siderite and calcite. was carried to the ocean or to an...unmistakable. Satura- tion of oceanwaterwith respectto siderite,ankerite, and/or pyrite is thereforenot unlikely...andBray, 1973); come saturated with respect to siderite and/or the widespreadoccurrenceof sideriteas an...sideriteto that of calcite. Thus rated with respectto siderite and containedon the orderof 3 ppmiron,ironcouldbe |  | | Journal (article/letter/editorial) | | Precambrianiron-formationsfrom the U.S., Canada,Australia, and South Africa reveals the commonpresenceof...iron-formations. The spheroidalstructuresin the chert, and siderite •rains within the same size range, are intimately...surpassed by dolomiteduringmiddleandlater in Western Australia and South Africa. Middle Precambrian. It is...restrictedto the Precambrian. man formation at Wittenoom Gorge and Deepdale, Sedimentaryiron depositsand chert...foundin youngerrocksequences, but thereseemsto Western Australia; and the iron-formation in the havebeena |  | | Book | | Related Mineral Systems with Special Reference to Australia Modern Approaches in Solid Earth Sciences Volume...Franco Pirajno, The University of Western Australia, Perth, Australia Brian Windley, Department of Geology...Related Mineral Systems with Special Reference to Australia Andrew Y. Glikson Planetary Science Institute...ACT, Australia Franco Pirajno Centre for Exploration Targeting The University of Western Australia Crawley...Crawley, WA, Australia Responsible Series Editor: F. Pirajno ISSN 1876-1682 ISSN 1876-1690 (electronic) |  | | Book | | Australian National University Canberra, ACT Australia ISSN 2191-5369 ISSN 2191-5377 (electronic) ISBN...the study of Gosses Bluff Structure, Central Australia, where the United States Astrogeology Branch,...Craton, with the support of Arthur Hickman of the Western Australian Geological Survey and my field mate...investigations of impact ejecta units in the Pilbara, Western Australia, on laboratory studies of impact ejecta from...Arthur Hickman of the Geological Survey of Western Australia. I thank Robert Iasky, Franco Pirajno, Peter |  | | Book | | Geological Survey of Western Australia, and The University of Western Australia, Perth, Australia M.J.R. Wortel...University Canberra, Australian Capital Territory Australia Responsible Series Editor: F. Pirajno Additional...zircons <4.404 Ga-old from the Jack Hills, Western Australia, leave large part of the earliest history...Superior Province in Canada, Yilgarn Craton and the western Pilbara Craton, compared by some authors to circum-Pacific...following my studies at the University of Western Australia during 1964–1968, my years in the Australian |  | | Journal (article/letter/editorial) | | hematite-magnetite pair. The siderite stability data are conflicting, but siderite is considerably less soluble...Greenalite appears to be very insoluble. Neither siderite nor greenalite are likely to precipitate under...assemblagessuch as oxides (hematite, magnetite), carbonates(siderite,ankerite), silicates(greenalite, minnesotaite...precipitationof magadiite,both of which are pH dependent: Mine. Servant, ORSTOM, 1147 Tchad, has kindly examined...pictured similar nodulesfrom Bed II at Olduvai Gorge (his figures 8a and 8b). Figure 3b is a chert nodule |  | | Journal (volume) | | progress review of the Hamersley Basin of Western Australia 113 Vokes, F. M.: Caledonian-Appalachian...Bj0rnevann occur on both sides of a synform, Bj0rnevann Mine lies at the northern crest" of the synform with...Bulletin 307 axes striking NW-SE. By this shear the western side of the deposits were displaced northwards...eposits (e. g . Souvrarappat, Porsanger). Repparfjord mine is a disseminated lowgrade copper deposit with chaleopyrite...nickel deposits in the Norseman-Viluna belt in Western Australia. According to R. Gee, D. Groves and C. Fletcher |
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