04175nam 2200481 450 991058304990332120170920010711.00-12-804105-6(CKB)3710000000840682(EBL)4653370(MiAaPQ)EBC4653370(PPN)197277039(EXLCZ)99371000000084068220160909h20172017 uy 0engur|n|---|||||rdacontentrdamediardacarrierNickel Sulfide Ores and impact melts /Peter C. Lightfoot, Vale Base Metals Ontario, CanadaAmsterdam, Netherlands :Elsevier,2017.©20171 online resource (696 p.)Description based upon print version of record.0-12-804050-5 Includes bibliographical references.Cover; Title Page; Copyright Page; Dedication; Contents; Preface; Acknowledgments; Chapter 1 - Sudbury - an introduction to the ore deposits and the impact structure; Introduction to Sudbury; History of discovery and production at Sudbury; Position of the Sudbury Camp as a future producer of nickel; The geology of Sudbury in a nutshell; Terminology used to describe the geology of the Sudbury structure; The Igneous Rocks; The Target Country Rocks; Sudbury geology at the center of important Earth Science debates; Fundamental igneous petrology; Origin of the ore depositsThe catastrophy that created the Sudbury rocksThe deep structure and deformation history of the SIC; Attempts to reconcile impact models with igneous processes; The impact process and the formation of the sulfide ores; Where do all the metals and sulfur in the ores come from?; Magmatic nickel sulfides - an introduction and overview; Process controls in the formation of magmatic sulfide ore deposits; Melting of the mantle; Migration of the magmas through the crust, and magmatic differentiation; Triggers to sulfur saturation of mafic magmasThe Importance of gravity-assisted settling of dense magmatic sulfide, and pathways through the crustControls on the composition of sulfide magmas; Sulfide localization and concentration mechanisms in "container rocks"; Sulfide differentiation; Post magmatic deformation, metamorphism, and hydrothermal modification of sulfide mineralization; Evidence for impact origin of Sudbury; Compelling evidence for an impact event; Supporting evidence for an impact event; Some features not resolved by the Sudbury Impact Model; Synthesis of the approach used in this bookAppendix 1.1 Synthesis of Sudbury BibliographyChapter 2 - A Synthesis of the Geology of the Sudbury Structure; Introduction; An Impact Event at the Southern Margin of the Superior Province Craton; An overview of the Regional Geological Setting of the Sudbury Structure; Geology of the Sudbury Structure; The target country rocks; Archean granitoid rocks and gneisses of the Superior Province; Huronian Supergroup metavolcanic and metasedimentary rocks; Mafic and ultramafic intrusive rocks in the Sudbury Region; Early Proterozoic East Bull Lake Type Intrusions; The Nipissing DiabaseSudbury Gabbro IntrusionsFelsic Intrusive Rocks in the Sudbury Region; Geology of the SIC; The Main Mass; The Geology of the North and East Range of the Main Mass; The Geology of the South Range of the Main Mass; Felsic Enclaves within the Norite Stratigraphy of the Main Mass in the South Range; Synthesis of the Geology of the Main Mass; The Offset Dykes; The Radial Offset Dykes; The Concentric Offset Dykes; The Discontinuous Segmented Offset Dykes; Comparative Geology of the Offset Dykes; The Contact of the Offset Dykes with the Country Rocks; Thickness and Continuity of the Offset DykesBranching of the Offset DykesNickel oresNickel ores.549.32Lightfoot Peter C.963213MiAaPQMiAaPQMiAaPQBOOK9910583049903321Nickel Sulfide Ores and impact melts2183942UNINA