Petrology and Geochemistry of Continental Rifts

Proceedings of the NATO Advanced Study Institute, Oslo, Norway, July 27-August 5, 1977

Klappentext

Proceedings of the NATO Advanced Study Institute, Oslo, Norway, July 27-August 5, 1977

Inhalt

General Aspects of Rifting.- Continental Rifting and Mantle Degassing.- A Note on the Behavior of Incompatible Trace Elements in Alkaline Magmas.- Geological and Geophysical Parameters of Mid-Plate Volcanism.- Tectonic and Magmatic Evolution of the Southern Part of the Kenya Rift Valley.- Some Aspects of the Metallogeny of Continental Rifting Events.- Active Continental Rifts.- The Afar Rift Junction.- Petrology of Plio-Pleistocene Basaltic Rocks from the Central Rio Grande Rift (New Mexico, USA) and their Relation to Rift Structure.- Rifting and Volcanism in the New Mexico Segment of the Basin and Range Province, Southwestern USA.- Mineralogy of the Tullu Moje Active Volcanic Area (Arussi: Ethiopian Rift Valley).- The Volcanological Development of the Kenya Rift.- Spatial and Temporal Variations in Basalt Geochemistry in the N. Kenya Rift.- Paleorifts.- Rift-Associated Igneous Activity in Eastern North America.- Basaltic and Alkalic Rocks of Southern Brazil: A Review.- The Gardar Igneous Province: Evidence for Proterozoic Continental Rifting.- Evidence for an Early Permian Oceanic Rift in the Northern North Atlantic.- RB/SR-Relationship in the Oslo Igneous Rocks.- Distribution of Th, U, K in the Plutonic Rocks of the Oslo Region, Norway.- Origin of the Magmas of the Vestfold Lava Plateau.- Petrology of the Skien Basaltic Rocks and the Early Basaltic (B1) Volcanism of the Permian Oslo Rift.- Composite Plutonic Ring-Complexes: A Structural Characteristic of Rift-Zone Plutonism.- Petrogenesis of the Larvik Ring-Complex in the Permian Oslo Rift, Norway.- Petrogenesis of the Holterkollen Plutonic Complex, Norway.- Metallogeny.- Ore Deposits Related to the Keweenawan Rift.- K/AR Dating of Clay-Mineral Alteration Associated with Ore Deposition in the Northern Part Of the Oslo Region.- Further K/AR Determinations on Clay-Mineral Alteration Associated with Fluorite Deposition in Southern Norway.- Ore Deposits in the North-Eastern Part of the Oslo Region and in the Adjacent Pre-Cambrian Areas.