Robert Kerrich2000——The characteristics, origins, and geodynamic settings of supergiant gold metallogenic provinces教程.pdf

Vol. 43 Supp. SCIENCE IN CHINA (Series D) December 2000
The characteristics, origins, and geodynamic settings of
supergiant gold metallogenic provinces
Robert Kerrich1, Richard Goldfarb2, David Groves3, Steven Garwin3, 4
& Yiefei Jia1
1. Department of Geological Sciences, University of Saskatchewan, Saskatoon SK S7N 5E2, Canada;
2. United States Geological Survey, Box 25046, MS 964, Denver Federal Center, Denver, CO 80225-0046, USA;
3. Centre for Strategic Mineral Resources, Department of Geology and Geophysics, University of Western Australia,
Nedlands 6907, Western Australia;
4. Newmont Mining Corporation, 1700 Lincoln Street, Denver, Colorado 80203, USA
Correspondence should be addressed to Kerrich (email: Robert. ******@usa.) or Jia (email: ******@mail.
)
Received August 31, 2000
Abstract There are six distinct classes of gold deposits, each represented by metallogenic prov-
inces, having 100’s to ˚ 1 000 tonne gold production. The deposit classes are: (1) orogenic gold;
(2) Carlin and Carlin-like gold deposits; (3) epithermal gold-silver deposits; (4) copper-gold por-
phyry deposits; (5) iron-oxide copper-gold deposits; and (6) gold-rich volcanic hosted massive sul-
fide (VMS) to sedimentary exhalative (SEDEX) deposits. This classification is based on ore and
alteration mineral assemblages; ore and alteration metal budgets; ore fluid pressure(s) -
positions; crustal depth or depth ranges of formation; relationship to structures and/or magmatic
intrusions at a variety of scales; and relationship to the P-T-t evolution of the host terrane. These
classes reflect distinct geodynamic settings. Orogenic gold deposits are generated at mid-crustal
(4—16 km) levels proximal to terrane boundaries, in transpressional subduction--
plexes of Cordilleran style orogenic belts; other orogenic gold provinces form inboard by delamina-
tion of mantle lithosphere, or plume impingement. Carlin and Carlin-like gold deposits develop