Tectonics of the Southern Central Andes

Structure and State of the Lithosphere.- The Lithospheric Structure of the Central Andes (20° - 26°S) as Inferred from Interpretation of Regional Gravity.- Variation in the Crustal Structure of the Southern Central Andes Deduced from Seismic Refraction Investigations.- Crustal High Conductivity Zones in the Southern Central Andes.- Geothermal Structure of the Central Andean Crust - Implications for Heat Transport and Rheology.- Large- and Fine-Scale Geochemical Variations Along the Andean Arc of Northern Chile (17.5°-22°S).- Partial Melting in the Lower Crust: New Constraints on Crustal Contamination Processes in the Central Andes.- State of In Situ Stress in Northern Chile and in Northwestern Argentina.- Large Events, Seismic Gaps, and Stress Diffusion in Central Chile.- Geological Evolution.- Tectonic Development of the North Chilean Andes in Relation to Plate Convergence and Magmatism Since the Jurassic.- K-Ar and Fission Track Mineral Age Determinations of Igneous Rocks Related to Multiple Magmatic Arc Systems Along the 23°S Latitude of Chile and NW Argentina.- Geothermal and Tectonic Evolution of the Eastern Cordillera and the Subandean Ranges of Southern Bolivia.- Sedimentary and Structural Evolution of the Salar de Atacama Depression.- The Purilactis Group of Northern Chile: Boundary Between Arc and Backarc from Late Cretaceous to Eocene.- Early Jurassic to Early Cretaceous Magmatism in the Coastal Cordillera and the Central Depression of North Chile.- Sediment Accumulation and Subsidence History in the Mesozoic Marginal Basin of Northern Chile.- Jurassic Cretaceous Palaeogeographic Evolution of the Chilean Andes at 23°-24°S Latitude and 34°-35°S Latitude: A Comparative Analysis.- The Southern Andes Between 39° and 44°S Latitude: TheGeological Signature of a Transpressive Tectonic Regime Related to a Magmatic Arc.- Terranes of Southern Gondwanaland and Their Control in the Andean Structure (30°-33°S Latitude).- Some Isotopic and Geochemical Constraints on the Origin and Evolution of the Central Andean Basement (19°-24°S).- The Late Carboniferous to Triassic Volcanic Belt in Northern Chile.- Geodynamic Evolution of the Early Palaeozoic Continental Margin of Gondwana in the Southern Central Andes of Northwestern Argentina and Northern Chile.- The Nitrate Deposits of Chile.- Petrochemical Factors Governing the Metallogeny of the Bolivian Tin Belt.- Maps of the Central Andean Segment Between 20° and 26°S.- Comments on the Geological and Geophysical Maps.- Enclosure.- 1 Geological Map.- 2 Bouguer Anomaly and Epicenters.- 3 Residual Gravity Anomaly (each at the scale 1:1 000 000 covering the area 20°-26° latitude and 63°-71° 30'W longitude).