Metallogenesis and Tectonics of the Russian Far East, Alaska, and ...

n
pJ pRanens. Pd-dc i3
Meeomic
.------ Zone averaghg 0.13% MoS
(epproximate cutoff 0.05%)
FhRJt &a& ehow~ng str~ke * dlp. anl aeries Ofdisplacement
Figure 119. Quartz Hill porphyly Mo deposll, Cerrtr;rl-and
Nokleberg a d dhers (1995).
Alaska rmbktgenk belt, &- A h . Adapted from
peraluminous, hrnblcnde-biotite ganitc d grPnilc porphyry, and haex sycnite and pbbo (hew, 198%). K-Ar, W r , and
fission track isotopic ages range from 19 to 35 Ma. The belt exhibits skortgly Prsctionatsd REEpWmO, large Europium
anomalies, and initial Sr mths of 0.747 lo 0.705 ( Mh aad o-, 1986).
The Glacier Bay magmatic and gkope-B~hd Paaid wlcenicplulanic beh iwe part of ?h Wl.t: hte
Cretaceous and early T uliary Coast-Nd Ccseads plutonic beh which Wmds rhe Len@ of the CaWdhr~ Cordillera and into
East-Central Alaska (fig. 103) (Rubin aad olhass, 199'1; Odhrels d ohem, 1W. Wbek and McFeley, 199 1; van der Heyden,
1992; Woodsworth and olhm, 1992; Journeay md Fr-, 1993). The CoastM Ciw%dc pIutonic belt forms tbemajor part
of the Coast continental-margin arc in Ihe region.
Bulkley Metallogonic Bdt of Porphyry Cu-Ma and
Polyrnetallic Vein Do- (Belt BK)
Central British Cdumbm
The Bulkley mdlogenic bdt of p~phyry Cu-Mo encl pdymtdk * depds (fig. 103; tables 3,4) oGcurs in mtral
British Columbia and is btd in a belt of mall stocks lurd brBobth8 d the Late CIZ~UXWU~ B~lldy Pl~tdc Suit& whiB
exposed along the uplift of the Slrem Arch in the centml paR of dK Stiltinin ~MIYU'ICI (Chtt~, 19B; h&d~ttiUk, 1m; Mh&l&
B