 | Christie, A. B., Simpson, M. P., Brathwaite, R. L., Mauk, J. L., Simmons, S. F. (2007) Epithermal Au-Ag and Related Deposits of the Hauraki Goldfield, Coromandel Volcanic Zone, New Zealand. Economic Geology, 102 (5) 785-816 doi:10.2113/gsecongeo.102.5.785 | Journal (article/letter/editorial) | | Related Deposits of the Hauraki Goldfield, Coromandel Volcanic Zone, New Zealand ANTHONY B. CHRISTIE,†...GNS Science, P.O. Box 30-368, Lower Hutt 5040, New Zealand MARK P. SIMPSON, School of Geography, Geology...1142, New Zealand ROBERT L. BRATHWAITE, GNS Science, P.O. Box 30-368, Lower Hutt, New Zealand JEFFREY... Auckland 1142, New Zealand Abstract Epithermal Au-Ag vein deposits of the Hauraki goldfield in the...the Coromandel volcanic zone, New Zealand, produced 320,000 kg Au and 1.5 million kg Ag between 1862 and |  | Simpson, Mark P., Gazley, Michael F., Stuart, Alistair G.J., Pearce, Mark A., Birchall, Renee, Chappell, Debra, Christie, Anthony B., Stevens, Murray R. (2019) Hydrothermal Alteration at the Karangahake Epithermal Au-Ag Deposit, Hauraki Goldfield, New Zealand. Economic Geology, 114 (2) 243-273 doi:10.5382/econgeo.2019.4630 | Journal (article/letter/editorial) | | Alteration at the Karangahake Epithermal Au-Ag Deposit, Hauraki Goldfield, New Zealand Mark P. Simpson...Research Centre, 114 Karetoto Road-RD4, Taupo 3377, New Zealand Scientific and Industrial Research Organisation...2013, New Zealand 4 GNS 5 Stevens Science, 1 Fairway Drive, Avalon, Lower Hutt 5010, New Zealand and...Parade, Beachlands, Auckland 2018, New Zealand Abstract The Karangahake deposit is the third largest gold...gold producer in the Hauraki goldfield, Coromandel, New Zealand. Production was mainly from the Maria and |  | | Report (issue) | | NEW ZEALAND DEPARTMENT OF SCIENTIFIC AND INDUSTRIAL RESEARCH NEW ZEALAND GEOLOGICAL SURVEY 125th ANNIVERSARY...1865 -1990 NEW ZEALAND GEOLOGICAL SURVEY BULLETIN 104 ISSN 0077-9628 Minerals of New Zealand by G. L....initials should be G.T., not G.L. Lower Hutt, New Zealand 1990 I I Beach sand, alluvium, • terrace...Figure 1. Simplified geological sketch-map of New Zealand. 0 20 40 60 80 100 KM l INTRODUCTION It...Morgan's "Minerals and Mineral Substances of New Zealand" was published, as NZ. Geological Survey bulletin |  | | Journal (article/letter/editorial) | | MetallogenicEpochsand MetallogenicProvincesof the Estrie-Beauce Region,SouthernQuebecAppalachians* MICHEL GAUTHIER, D...aluatethe mineralpotentialof the Estrie-Beauce region, the MinistArede l'Energie et des Ressourcesdu...same time in the Glens Falls area of west-central New 1323 logicorder.Our studyrecognizesthree metallogenic...Acadianorogeny(epoch7). The postorogenic period is dominatedby the New EnglandandQuebecalkaline metallogenicepoch (8). The...TENX'\ K¾ '"•, nH•'•e• ONT(xESTRIE ANDBEAUCE REGION • • oh; ......... 50G km F•C.1. Locationmapof |  | | Journal (volume) | | Poster: - Marc Bardoux* and Robert Marquis: L 2001: a new interpretation of northwesterly-dipping reflectors....... 50 IV. DESTRUCTION OF A PASSIVE MARGIN II: NEW DEVELOPMENTS IN THE VERMONT APPALACHIANS...........biostratigraphic and geochronologic evidence from the general region does not provide tight time constraints on the...has yet come to light from the Sutton Mountains region to suggest a protracted period of rifling, or a...Pond Formation. The area of interest encompasses a region extending from central Vermont to Sutton, Québec |  | | Journal (article/letter/editorial) | | and Copper Ridge formationsin the Powell River district, and, finally, to the very importantLower OrdovicianKingsportand... JeffersonCity districtand in the CopperRidge district (Fig. 1). There is no knownsignificantzinc or...Generaiized bection, East Tennessee Zinc 695 District Thickness Age Formation M. Ordovician Lenoir...dove-colored bird• eye (Hosheim) is. unconformity 5•ascot dolomite unconform{ty-- 500-600 Light-and Limestone... 300 • Greenish to purplish shale with thin siltstone Is. 'Romeformation mostly ribboned with dolomite |  | | Book | | GEOLOGICAL SURVEY Geology of the Windsor and Bracknell district a brief explanation of the geological map Sheet...Terrace Deposits 16 8 tvlineral resources of the district 20 9 Potential ground constraints 22 Plates 1...stone 21 Queen Mary Reservoir 27 Notes The word 'district' is used here to refer to the area represented...Forest, Runnymede and Windsor and Maide.nhead district councils, the London Borough of Hounslow, and...fow1d in the ,nemoir for th e district (Dewey and Bromehead, 1915). New in fonnation from these sections |  | | Report (issue) | | volcano-sedimentary depositional system, providing new U-Pb zircon geochronologic data, and concluding that...Stuhini Group rocks in the past-producing Scottie gold mine area near Stewart and a Hazelton Group stratigraphy...gaseous elemental mercury as an exploration tool with new surveys at the Lara-Coronation polymetallic volcanogenic...LA-ICP-MS zircon geochronology of the Scottie gold mine area, northwestern British Columbia ..............province). The Cordilleran Geoscience Section generates new knowledge through fieldand desk-based research activities |  | | Journal (article/letter/editorial) | | in the Tennant Creek district. The early proterozoic Tennant Creek Au-Cu district of the Northern Territory...porphyry dikes at the White Devil deposit and the district in general has been controYersial. Early workers...talc (P. Hunter, pets. comm.). The Tennant Creek district occurs within turbiditic graywacke and shale of...discussions of the geology of the Tennant Creek district are given by Khin Zaw et al. (1994) and Rattenbury...the northwestern portion of the Tennant Creek district, 35 km to the northwest of the town of Tennant |  | | Journal (article/letter/editorial) | | that is dominated by dark-coloured mudstone and siltstone (LespCrance 1963). As rule the basaltic rocks...structurally overlies the volcanicbearing mudstone-siltstone unit. In this area, an amygdular dike of basaltic...earlier unconsolidated calcareous mudstone and siltstone washed into the karstic spaces. These "paraconglomerates"...used to discriminate the tectonic setting of this region. As pointed out by Hynes (1980), metasomatic alteration...that demonstrated by basalts analyzed form northern New England states, which are known to be different in |  | | Journal (article/letter/editorial) | | ofthewestern UnitedStates arepresentin theYauricocha district, centralPeru. The PurlsimaConcepci6ndepositis...study. The principalorebodies of the Yauricocha district, locatednear the westernmarginof the Yauricocha... CARMENCITA •, .f- ,•oo -1+ ! I T.C.O t %ASCOT? AO.,ANA'• PURISIMA CONCEPCION-,. T. COAGZ\ •...provided carbonaceous siltstone or carbonate rock of the Parby the Bau district, Indonesia(Wolfenden,1965;...the RobertsMountainsand PopovichFormations, Carlin mine area, Eureka County, Nevada:U.S. Geol. Survey Bull |  | | Journal (article/letter/editorial) | | and structure in the Callie gold deposit, Tanami Region of northern Australia Nicholas C. Williams Received:...Soak goldfield of the Northern Territory’s Tanami Region, 550 km northwest of Alice Springs. The Callie...graphitic host rocks. Keywords Gold deposits . Tanami Region . Quartz veins . Graphite . Geochemistry Introduction...Dead Bullock Soak (DBS) goldfield in the Tanami Region of Australia’s Northern Territory (Fig. 1), 550...metamorphosed Archean and Paleoproterozoic rocks of the region host a Miner Deposita (2007) 42:65–87 number |  | | Journal (article/letter/editorial) | | related exhumation of the collisional wedge. The new age data imply that the southern Quebec ophiolites...mainland Canada and New England showing the major lithotectonic elements of the region. Modified from Williams...Conn—Connecticut; Mass—Massachussets; Me—Maine; NB—New Brunswick; NH—New Hamshire; Qc—Quebec and Vt—Vermont. Note...Note that the boundary between Medial New England (Gander zone) and Composite Avalon is approximate; see...(3) the Magog Group forearc basin; and (4) the Ascot Complex volcanic arc. The Thetford-Mines, Asbestos |  | de Caritat, Patrice, Kirste, Dirk, Carr, Graham, McCulloch, Malcolm (2005) Groundwater in the Broken Hill region, Australia: recognising interaction with bedrock and mineralisation using S, Sr and Pb isotopes. Applied Geochemistry, 20 (4) 767-787 doi:10.1016/j.apgeochem.2004.11.003 | Journal (article/letter/editorial) | | com/locate/apgeochem Groundwater in the Broken Hill region, Australia: recognising interaction with bedrock...mineralisation type). This study also highlights several new locations under sedimentary cover where these indicators...The area for the present study is the Broken Hill region, which is host to a single known supergiant Pb–Zn–...quartzite, quartzite conglomerate, limestone, siltstone, sandstone, shale, dolomite and diamictite forming...regolith and landscape features of the Broken Hill region are now being extensively studied. Recent works |  | | Journal (article/letter/editorial) | | the north-north-west accretion of the Notre Dame, Ascot-Weedon, St Victor and various ophiolitic massifs...the Burgeo Terrane. The striped pattern near the New Brunswick-Maine border indicates rocks of mixed Gander...(Fig. 2). This includes Newfoundland, Nova Scotia, New Brunswick and Quebec south of the St Lawrence River...north-east- south-west zones passing through southern New Brunswick, Nova Scotia and from St Georges Bay to...named either by redefining older terms or assigning new names. As relatively little modification is required |  | | Report (Issue volume) | | and more accessible regions. A large part of the new knowledge has been gained in the course of systematic...and also by the National Research Council. Whole new fields of endeavour and extensions to the old established...non-geologist with a brief and handy refer¬ ence to new and important facts, concepts, and interpreta¬ tions...familiar to him and stimulate the development of new The increased knowledge has resulted from a larger...dependent to a very large degree on the discovery of new mineral deposits Moreover, money is available to |  | | Report (chapter) | | orogenic system (Fig. 1) circumscribe the N Atlantic region. Consideration of this orogenic complex is integral...belts The crystalline basement of the N Atlantic region consists of a mosaic of crustal elements consolidated...orogenic cycles (Ziegler 1984). The forelands of the region (Fig. 1) consist of (1) the Laurentian-Greenland...lavas 191 ,,r ! , t Jtt Limestone I ~ . - ~ Siltstone Dolomite [O01Pillowlava,hyaloclastite a Ophiolite...Piedmont-Chopawamsic belt; 4, New England central mobile belt; 5, southern New England Avalonian belt; 6 |  | | Journal (article/letter/editorial) | | Geoscience Limited, Silwood Park , Buckhurst Road , Ascot, Berkshire, SL5 7QW 1. INTRODUCTION The Dungeness...drilling and geophysical data collection, have provided new information on the nature and geometry of the Holocene...borehole cores and these provide an interesting new insight into the depositional history. (a) Boreholes...of the faults mapped due west in the Hastings district (BGS 1: 250,000 Dover-Boulogne Sheet; 1:50,000...~ - ~ -\"'i - ~ - """"" ~~..2 3270!90BP siltstone siltstone \ Fault ..,) In ,bedrock ---=-- ~ |  | | Report (issue) | | al., is in the most active mineral exploration district in the province, colloquially known as the Golden...Hogem batholith in east-central British Columbia. New geochronologic data from an area in southern British...in the Trembleur ultramafite. BCGS is developing new exploration methods to help in the search for buried...till samples collected from near Highland Valley mine in the Interior Plateau. The Survey has invested...Survey. Resources have been focussed primarily on new mapping and updating BC digital geology. The Survey |  | | Book | | vertebrate fossils in the Australasian region - including Australia, New Zealand and the Southwest Pacific as well...unique history of vertebrate palaeontology in this region, as well as gives an overview of the geological...of vertebrate palaeontology of the Australasian region. The second part of the book outlines the different...me and my colleagues. The central theme of this new volume, Australasian vertebrate palaeontology, is...authored by David's and Stirt's students, In this new volume we find abundant evidence that not only does |  | | Report (Issue volume) | | + 4, Mineral Fe # — of Australia and™ Papua New Guinea ... Geology of the Mineral Deposits of Australia and Papua New Guinea The COVER PHOTOGRAPH shows an aerial view...on the east coast of Lihir Island, New Ireland Province, Papua New Guinea. The Ladolam gold deposit lies...Resources Development Centre, Port Moresby, Papua New Guinea The Australasian Institute of Mining and...Mines — 1968 1968 and Papua New Ed. C.L. Knight 1974 1975 and Papua New Eds D.M. Traves and D. King |  | | Book | | vertebrate fossils in the Australasian region - including Australia, New Zealand and the Southwest Pacific as well...unique history of vertebrate palaeontology in this region, as well as gives an overview of the geological...of vertebrate palaeontology of the Australasian region. The second part of the book outlines the different...me and my colleagues. The central theme of this new volume, Australasian vertebrate palaeontology, is...authored by David's and Stirt's students. In this new volume we find abundant evidence that not only does |  | | Report (issue) | | (Petrology)—Appalachian Region—Congresses. 2. Olistostromes—Appalachian Region—Congresses. I. Horton,...Olistostromes of the Avalonian terrane of southeastern New England 0 iic0o0. sia SO OO BE ate. Richard H. Bailey...the U.S. Appalachians in order to emphasize these new and exciting research endeavors. Canadian Appalachian...a more complete picture of the geology. Several new discoveries and interpretations in the U.S. Appalachians...Orogen held in 1984 were unable to agree on any new or previous definition. Similar disagreements are |  | | Report (issue) | | CONTENTS l Introduction l Description of the district 2 Topography 3 Geology 3 Composition of sand and...the sub-Drift surface in the western part of the district 5 Mean grading of the aggregate-bearing deposits... �he main town 1n the district, lies near_ its western 111arg1n. The district is served by two main roads...Chilterns, which crosses the south-east corner of the district and reaches an elevation of 230m (755 ft) at Britwell...resistant Chalk bedrock. The remainder of the district is underlain mainly by less resistant clays and |  | | Book | | Industrial Minerals dredge pond, Lang Lang Deep lead mine dumps at Allendale Potential silica resource areas...Geological environments, favourable to exploration for new resources of these and other nonmetallic materials...ranking mineral sands province. It is important that new programs are undertaken as a matter of priority,...poorly researched materials which offer scope for a new or increased contribution to the State's mineral...An assessment of the potential for discovery of new, economically significant deposits, is based on the |
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