Geochemistry of Paleoproterozoic Pseudotachylites of the Anabar Shield and Mechanism of Its Formation

摘要

This study is aimed at solution of the problem of the formation conditions of thick bodies of Paleoproterozoic pseudotachylite on the Anabar Shield by investigation of their geochemistry, as well as the geochemistry of the parental rocks.rnPseudotachylite is a rock formed under the conditions of amphibolite facies at the expense of rapid friction (grinding) and melting of crack walls in upper crustal rocks during earthquakes and large impact events.