When Continents Collide: Geodynamics And Geochemistry Of Ultrahigh-pressure Rocks (petrology And Structural Geology)

2Gpa has increased to more than 15. This indicates that subduction of continental fragments to depths of 100-150 km may have played a significant role in the formation of mountain belts. This volume brings together the geochemical, geophysical and geodynamical approaches to study the processes active during ultrahigh-pressure (UHP) tectonics. The collection of papers demarkates the frontier of our understanding of the creation, preservation, and exhumation of ultrahigh-pressure rocks. __Audience:__ This volume will be of interest to any earth scientist interested in ultrahigh pressure processes and the formation and modification of continental crust. Front Matter....Pages i-x Active Crustal Subduction and Exhumation in Taiwan....Pages 1-25 Melting of Crustal Rocks During Continental Collision and Subduction....Pages 27-55 Rheology of Crustal Rocks at Ultrahigh Pressure....Pages 57-95 Thermal Controls on Slab Breakoff and the Rise of High-Pressure Rocks During Continental Collisions....Pages 97-115 Exhumation of Ultrahigh-Pressure Rocks: Thermal Boundary Conditions and Cooling History....Pages 117-139 Active Tectonics and Ultrahigh-Pressure Rocks....Pages 141-160 K-Ar ( 40 Ar/ 39 Ar) Geochronology of Ultrahigh Pressure Rocks....Pages 161-201 Geochemical and Isotopic Characteristics of UHP Eclogites and Ultramafic Rocks of the Dabie Orogen: Implications for Continental Subduction and Collisional Tectonics....Pages 203-239 Stable Isotope Geochemistry of Ultrahigh-Pressure Rocks....Pages 241-259 Tracing the Extent of a UHP Metamorphic Terrane: Mineral-Inclusion Study of Zircons in Gneisses from the Dabie Shan....Pages 261-273 H 2 O Recycling During Continental Collision: Phase-Equilibrium and Kinetic Considerations....Pages 275-295 Influence of Fluid and Deformation on Metamorphism of the Deep Crust and Consequences for the Geodynamics of Collision Zones....Pages 297-323 Back Matter....Pages 325-325