X

Interested in the Harquail School of Earth Sciences?

Fill out this form and we will contact you with details about our programs!

Learn More!
?
Comment
Home  /  Comment

New U–Pb geochronology from Timiskaming-type assemblages in the Shebandowan and Vermilion greenstone belts, Wawa subprovince, Superior Craton: Implications for the Neoarchean development of the southwestern Superior Province

Publication Type:

Journal Article

Source:

Precambrian ResearchPrecambrian Research, Volume 235, p.264-277 (2013)

ISBN:

03019268

Keywords:

Neoarchean, Shebandowan greenstone belt, Timiskaming-type assemblages, U–Pb geochronology, Vermilion greenstone belt

Abstract:

Timiskaming-type assemblages in the Wawa-Abitibi terrane of the Superior Craton and other Archean cratons worldwide are important because of their spatial and temporal association with world-class orogenic gold mineralization, especially in the Kirkland Lake area of Ontario. These mainly locally derived sedimentary assemblages are deposited in transpressional, pull-apart basins that developed during the final stages of terrane accretion, and are commonly associated with calc-alkalic to alkalic volcanic and plutonic rocks. The Shebandowan and Vermilion greenstone belts (SGB, VGB) in the Wawa subprovince have significantly less economic base and precious metal mineralization than the greenstone belts of the Abitibi subprovince and the timing of deformation and magmatism in the SGB and VGB is less well constrained. This study presents new U-Pb geochronology from the SGB and VGB that demonstrating that the sedimentary and volcanic rocks of the Lake Vermilion Formation in the VGB are coeval with similar rocks in the SGB and their interpreted depositional environment are consistent with these units being Timiskaming-type assemblages. Analyses of magmatic zircons in a dacitic tuff breccia from the Gafvert Lake sequence, the volcanic member of the Lake Vermilion Formation, provided a high precision U-Pb age of 2689.7. ±. 0.8. Ma using thermal ionization mass spectrometry. Detrital zircon geochronology using LA-ICP-MS confirms that the source of the detritus in the Lake Vermilion Formation was locally derived from the Gafvert Lake metavolcanic lithofacies. A similar temporal pattern was observed in many of the Timiskaming-type sedimentary rocks that were sampled in the SGB. The locally derived, alluvial-fluvial to shallow marine depositional environment in long, narrow basins with rapid lateral facies changes described in the SGB and VGB are consistent with deposition in structurally controlled, pull-apart basins. However, one sample from the SGB had detrital zircons with ages that were more akin to the age range found to the north in the Wabigoon subprovince, which is suggestive of trans-terrane transport of detritus in a foreland-type basin. Geochemically, the Timiskaming-type volcanic rocks in the VGB and SGB are less enriched in incompatible elements and are comparatively less alkalic than the volcanic rocks in the Timiskaming assemblage of Kirkland Lake. This may indicate that the structures that formed the basins within the SGB and VGB in the Wawa were not as deeply penetrating as those in the Abitibi, which may explain the paucity of economic gold mineralization associated with the former. The Timiskaming-type deposits of the northern Wawa-Abitibi terrane are 20. Ma older than the Timiskaming assemblage in the Abitibi subprovince, and co-depositional with the flysch-like deposits of the Porcupine assemblage in the southern part of that terrane.

Reply a comment

Your email address will not be published. Required fields are marked *

Filtered HTML

  • Web page addresses and e-mail addresses turn into links automatically.
  • Allowed HTML tags: <a> <em> <strong> <cite> <blockquote> <code> <ul> <ol> <li> <dl> <dt> <dd>
  • Lines and paragraphs break automatically.

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.

Courses search

The wait is over. Signup today to maximize your future incomes

935 Ramsey Lake Road
Sudbury, Ontario
P3E 2C6
Canada

hes@laurentian.ca

+1 (705) 675-1151 ext 6575

Newsletter


casibomizmir escortizmir escort bayanMarsbahis güncel girişMarsbahis güncelMarsbahis giriş güncelMarsbahis girişMarsbahisBetturkey güncel girişBetturkey güncelBetturkey giriş güncelBetturkey girişBetturkeySekabet güncel girişSekabet güncelSekabet giriş güncelSekabet girişSekabetDinamobetDinamobet girişDinamobet giriş güncelDinamobet güncelDinamobet güncel girişFixbetFixbet girişFixbet giriş güncelFixbet güncelFixbet güncel girişMatadorbetMatadorbet girişMatadorbet giriş güncelMatadorbet güncelMatadorbet güncel girişBahiscasinoBahiscasino girişBahiscasino giriş güncelBahiscasino güncelBahiscasino güncel girişBahsegelBahsegel girişBahsegel giriş güncelBahsegel güncelBahsegel güncel girişBahiscomBahiscom girişBahiscom giriş güncelBahiscom güncelBahiscom güncel girişPadişahbetPadişahbet girişPadişahbet giriş güncelPadişahbet güncelPadişahbet güncel girişGalabetGalabet girişGalabet giriş güncelGalabet güncel girişGalabet güncelParibahisParibahis girişParibahis giriş güncelParibahis güncelParibahis güncel girişBetcioBetcio girişBetcio giriş güncelBetcio güncelBetcio güncel girişUltrabetUltrabet girişUltrabet giriş güncelUltrabet güncelUltrabet güncel girişOnwinOnwin girişOnwin giriş güncelOnwin güncelOnwin güncel girişİzmir escortEscort izmirİzmir escort bayanEscort bayan izmirBuca escortEscort bucaBuca escort bayanEscort bayan bucaBornova escortEscort bornovaBornova escort bayanEscort bayan bornovaKarşıyaka escortEscort karşıyakaKarşıyaka escort bayanEscort bayan karşıyakaÇiğli escortEscort çiğliÇiğli escort bayanEscort bayan çiğliÇeşme escortEscort çeşmeÇeşme escort bayanEscort bayan çeşmeKonak escortEscort konakKonak escort bayanEscort bayan konakAlsancak escortEscort alsancakAlsancak escort bayanEscort bayan alsancakİzmit escortEscort izmitİzmit escort bayanEscort bayan izmitKocaeli escortEscort kocaeliKocaeli escort bayanEscort bayan kocaeliGebze escortEscort gebzeGebze escort bayanEscort bayan gebzeSakarya escortEscort sakaryaSakarya escort bayanEscort bayan sakaryaSerdivan escortEscort serdivanSerdivan escort bayanEscort bayan serdivanSapanca escortEscort sapancaSapanca escort bayanEscort bayan sapancaTekirdağ escortEscort tekirdağTekirdağ escort bayanEscort bayan tekirdağÇorlu escortEscort çorluÇorlu escort bayanEscort bayan çorluÇerkezköy escortEscort çerkezköyÇerkezköy escort bayanEscort bayan çerkezköyankara escortcasibom바카라사이트바카라사이트casibom girişhacklink satışAntalya escortEscort antalyaAntalya escort bayanEscort bayan antalyaAlanya escortEscort alanyaAlanya escort bayanEscort bayan alanyaManisa escortEscort manisaManisa escort bayanEscort bayan manisaKuşadası escortEscort kuşadasıKuşadası escort bayanEscort bayan kuşadasıÇanakkale escortEscort çanakkaleÇanakkale escort bayanEscort bayan çanakkaleKonya escortEscort konyaKonya escort bayanEscort bayan konyaKayseri escortEscort kayseriKayseri escort bayanEscort bayan kayseriGaziantep escortEscort gaziantepGaziantep escort bayanEscort bayan gaziantepMersin escortEscort mersinMersin escort bayanEscort bayan mersinBodrum escortEscort bodrumBodrum escort bayanEscort bayan bodrumFethiye escortEscort fethiyeFethiye escort bayanEscort bayan fethiyeElazığ escortEscort elazığElazığ escort bayanEscort bayan elazığAdana escortEscort adanaAdana escort bayanEscort bayan adanaSamsun escortEscort samsunSamsun escort bayanEscort bayan samsunDenizli escortEscort denizliDenizli escort bayanEscort bayan denizliMalatya escortEscort malatyaMalatya escort bayanEscort bayan malatyaEskişehir escortEscort eskişehirEskişehir escort bayanEscort bayan eskişehirDiyarbakır escortEscort diyarbakırDiyarbakır escort bayanEscort bayan diyarbakırVan escortEscort vanVan escort bayanEscort bayan vanHatay escortEscort hatayHatay escort bayanEscort bayan hatayCasibomCasibom girişCasibom giriş güncelCasibom güncelCasibom güncel girişPusulabetPusulabet girişİzmir escortEscort izmirİzmir escort bayanEscort bayan izmirDoha escortEscort dohaDoha escortsQatar escortEscort qatar바카라사이트