NDLI: Isotope characterization of lead in galena from ore deposits of the Aysén Region, southern Chile

Please wait, while we are loading the content...

Lithological and spatial controls on the distribution of quartz veins in andesite- and rhyolite-hosted epithermal Au–Ag deposits of the Hauraki Goldfield, New Zealand

Alteration zoning and primary geochemical dispersion at the Bronzewing lode-gold deposit, Western Australia

Epithermal gold mineralisation in the active Aegean Volcanic Arc: the Profitis Ilias deposit, Milos Island, Greece

Isotope characterization of lead in galena from ore deposits of the Aysén Region, southern Chile

Gabbro Akarem, Eastern Desert, Egypt: Cu–Ni–PGE mineralization in a concentrically zoned mafic–ultramafic complex

Petrological characteristics of podiform chromitites and associated peridotites of the Pan African Proterozoic ophiolite complexes of Egypt

Critical factors for the formation of a nickel–copper deposit in an evolved magma system: lessons from a comparison of the Pants Lake and Voisey's Bay sulfide occurrences in Labrador, Canada

Sodic(–calcic) alteration in Fe-oxide–Cu–Au districts: an origin via unmixing of magmatic H2O–CO2–NaCl ± CaCl2–KCl fluids

Discussion of “Unconventional PGE occurrences and PGE mineralization in the Great Dyke: metallogenic and economic aspects” by B. Stribrny, F.-W. Wellmer, K.-P. Burgath, T. Oberthür, M. Tarkia, and T. Pfeiffer (Mineralium Deposita 35:260–281)

Unconventional PGE occurrences and PGE mineralization in the Great Dyke: metallogenic and economic aspects – a reply

Mineralium Deposita : Volume 35

Mineralium Deposita : Volume 34

Mineralium Deposita : Volume 33

Mineralium Deposita : Volume 32

Isotope characterization of lead in galena from ore deposits of the Aysén Region, southern Chile

Content Provider	Springer Nature Link
Author	Townley, Brian K. Godwin, Collin I.
Copyright Year	2001
Abstract	Lead isotope analyses of galena from five ore deposits and six prospects in the Aysén region of southern Chile are reported. Most of the deposits are either low sulfidation epithermal gold–silver veins or skarn and manto deposits; the majority are either suspected to be, or dated as, Late Jurassic to mid-Cretaceous. Galena lead isotope data for most of the deposits from southern Chile cluster near the “orogene” within a “plumbotectonic” model framework. Average values (206Pb/204Pb=18.53, 207Pb/204Pb=15.63, and 208Pb/204Pb=38.50) are near Jurassic to Cretaceous model ages on the “orogene” curve of Zartman and Doe (1981) and the second-stage curve of Stacey and Kramers (1975) on a 206Pb/204Pb versus 207Pb/204Pb plot. These model ages are compatible with absolute ages as currently known. The elongate trends in the general cluster indicate mainly an orogenic model fit, suggesting variable mixing of lead from different sources, mainly model upper crust and lesser model mantle and lower crust reservoirs. Galena lead associated with one deposit (El Faldeo) is relatively radiogenic, and lies near a Jurassic age on the “upper crustal” curve of Zartman and Doe (1981), which is compatible with the Ar/Ar age of the deposit. Galena lead isotope clusters define three main groups of deposits. These three groups appear to be related to three mineralizing events, dated by K–Ar and Ar/Ar, in the Late Jurassic (group 3), and in the Early and mid-Cretaceous (groups 1 and 2 respectively). Averages for group 1, the northern group including El Toqui and Katerfeld, are 206Pb/204Pb=18.51, 207Pb/204Pb=15.62, 208Pb/204Pb=38.48. Averages for group 2, the southern group with Fachinal and Mina Silva, are 206Pb/204Pb = 18.56, 207Pb/204Pb=15.63, 208Pb/204Pb=38.52. Averages for group 3, the southernmost group with the El Faldeo, Lago Chacabuco and Lago Cochrane prospects, are 206Pb/204Pb=18.83, 207Pb/204Pb=15.65, 208Pb/204Pb=38.63. The Cretaceous deposits (groups 1 and 2) contain orogene-type lead that becomes increasingly radiogenic southward. Lead from the Late Jurassic deposits (group 3) appears to reflect mixing of orogene lead with highly radiogenic lead. The observed linear array of lead in group 3 probably reflects mixing of orogene lead with highly radiogenic lead, which was likely extracted by selective leaching of mineralizing hydrothermal solutions from the metamorphic basement.
Starting Page	45
Ending Page	57
Page Count	13
File Format	PDF
ISSN	00264598
Journal	Mineralium Deposita
Volume Number	36
Issue Number	1
e-ISSN	14321866
Language	English
Publisher	Springer-Verlag
Publisher Date	2001-01-01
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Geophysics Economic Geology Geochemistry and Petrology

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Lead isotope signatures of epithermal and porphyry-type ore deposits from the Romanian Carpathian Mountains

Lead sources in Mesozoic and Cenozoic Andean ore deposits, north-central Chile (30–34°S)

From sandstone- to carbonate-hosted stratabound deposits: an isotope study of galena in the Upper-Moulouya District (Morocco)

Fluid inclusion and stable isotope characteristics of the Karalar (Gazipaşa, Antalya) barite-galena deposits, Southern Turkey

Pb isotope fingerprinting of mesothermal gold deposits from central Victoria, Australia: implications for ore genesis

Lead isotope variations across terrane boundaries of the Tien Shan and Chinese Altay

Aysén seismic swarm (January 2007) in southern Chile: analysis using Joint Hypocenter Determination

Lead isotope systematics of the giant massive sulphide deposits in the Iberian Pyrite Belt

Ore lead and sulphur isotope pattern from the low-temperature veins of the Catalonian Coastal Ranges (NE Spain)

Isotope characterization of lead in galena from ore deposits of the Aysén Region, southern Chile

Similar Documents

Lead isotope signatures of epithermal and porphyry-type ore deposits from the Romanian Carpathian Mountains

Lead sources in Mesozoic and Cenozoic Andean ore deposits, north-central Chile (30–34°S)

From sandstone- to carbonate-hosted stratabound deposits: an isotope study of galena in the Upper-Moulouya District (Morocco)

Fluid inclusion and stable isotope characteristics of the Karalar (Gazipaşa, Antalya) barite-galena deposits, Southern Turkey

Pb isotope fingerprinting of mesothermal gold deposits from central Victoria, Australia: implications for ore genesis

Lead isotope variations across terrane boundaries of the Tien Shan and Chinese Altay

Aysén seismic swarm (January 2007) in southern Chile: analysis using Joint Hypocenter Determination

Lead isotope systematics of the giant massive sulphide deposits in the Iberian Pyrite Belt

Ore lead and sulphur isotope pattern from the low-temperature veins of the Catalonian Coastal Ranges (NE Spain)

Isotope characterization of lead in galena from ore deposits of the Aysén Region, southern Chile