| Abstract: | ![]()
The capital of the world's nickel.Sudbury in north Ontario,is named for the Sudbury Structure. The Sudbury Structure and its associated Cu-Ni sulphide deposits is a significant geological record on the earth. Detailed study of the Sudbury Structure has suggested that the Sudbury Structure is a violent structure,widely regarded as meteoritic shocking structure. The footwall rock of the structure is Precambrian metamorphic rocks which has subjected shock metamorphism and formed Sudbury Breccia partly. The Sudbury Igneous Complex(SIC)is a controversial igneous rocks,compositionally from quartznorite to granophyre and quartz diorite-offset dikes,for its special composition andgeological occurrence. The hang-wall rock,Whitewater Group,is more complex and interpreted as an ignimbrite or the fallback breccia from the impact of a meteorite. Coinci-dentally, the Sudbury Structure is located on the east-tending Elliot Lake- Englehart positive gravity anomaly and at the "Junction" of three structure provinces,and also located on a big Cu-Ni metallic mineralization zone...It is a milestone in Sudbury Structure research that the monograpgy,The Geology and Ore Deposits of the Sudbury Structure, was published by Ontario Geological Survey (OGS) in 1984. This year there will be a international symposium on the Sudbury Structure in Laurentian University. This paper is an introduction of Sudbury Structure to people who are not familiar with it. |
