Impact Tectonics

A collection of international contributions presenting current knowledge of impact tectonics, geological and geophysical investigations of terrestrial impact structures, and suggested new impact structures, resulting from the IMPACT program.

Zusammenfassung
This volume is the latest of eight books as a result of the activities of the scientific program on The Response of the Earth System to Impact Processes (IMPACT) of the European Science Foundation (ESF). The ESF is the European association of national funding organisations of fundamental research, with more than 60 member organisations from more than 20 countries. One of the main goals of ESF is to bring European scientists together to work on topics of common interest. The ESF IMPACT program deals with all aspect of impact research, mainly through the organisation of workshops, exchange program, short course, and related activities. An important aspect of the program is to stimulate interdisciplinary and international research. Impacts of asteroids or comets on the earth surface have played an important role in the evolution of the planet. The ESF IMPACT program is an interdisciplinary program aimed at understanding impact processes and their effect on the earth system, including environmental, biological, and geological changes, and consequences for the biodiversity of ecosystems. The key goal of the program, to comprehend the processes that are responsible for these interactions, has been met with by eight workshops and published proceedings from these. The workshop from which this volume resulted, was devoted to impact tectonic studies. It was located in the small town of Mora in the western part of the ring basin of the very large Siljan impact structure in Sweden.

Inhalt

Impact Tectonics - General Aspects.- "Pseudotachylites" in Large Impact Structures.- The Mechanics of Pseudotachylite Formation in Impact Events.- Silicified Cone-in-Cone Structures from Erfoud (Morocco): A Comparison with Impact-Generated Shatter Cones.- Redistribution of Lithologies in Impact-induced Dikes of Impact Structures.- The Preliminary Analysis of Polygonal Impact Craters within Greater Hellas Region, Mars.- Structural and Tectonic Aspects of Impact Craters.- BP and Oasis Impact Structures, Libya: Remote Sensing and Field Studies.- Late Modification-Stage Tectonic Deformation of the Popigai Impact Structure, Russia.- Settings of Meteorite Impact Structures in the Svecofennian Crustal Domain.- Geophysical Investigations of the Siljan Impact Structure - A Short Review.- Mjølnir Crater as a Result of Oblique Impact: Asymmetry Evidence Constrains Impact Direction and Angle.- The Duobblon Structure - A Small Segment of a Large Precambrian Impact Structure?.- Åvike Bay - a 10 km Diameter Possible Impact Structure at the Bothnian Sea Coast of Central Sweden..- The Structure and Age of the Kaali Main Crater, Island of Saaremaa, Estonia.- The Lockne Crater: Revision and Reassessment of Structure and Impact Stratigraphy.- A Study of Impact Fracturing and Electric Resistivity Related to the Lockne Impact Structure, Sweden.- Impact Studies by Numerical and Experimental Methods.- Hydrocode Simulation of the Lockne Marine Target Impact Event.- Numerical Simulation of Shock Propagation in Heterogeneous Solids.- The Kentland Impact Crater, Indiana (USA): An Apatite Fission-Track Age Determination Attempt.- The Combined Petrographic and Chemical Analysis of end-Permian Kerogens.- Economic Aspects of Impact Structures.- Economic Mineral Deposits in ImpactStructures: A Review.