Foliation boudinage [Elektronische Ressource] / Arzu Arslan

Foliation boudinageDissertation zur Erlangung des Grades„Doktor der Naturwissenschaften“im Promotionfach Geologie/Paläontologieam Fachbereich Chemie, Pharmazie und Geowissenschaftender Johannes Gutenberg-Universität MainzArzu Arslangeboren in SalihliMainz, 2007ErklärungIch versichere hiermit, die vorliegende Arbeit selbstständig und nur unter Verwendung derangegebenen Quellen und Hilfsmittel verfasst zu haben.Mainz, Dezember 2007Abstract viAbstractIn this thesis foliation boudinage and related structures have been studied based onfield observations and numerical modeling. Foliation boudinage occurs in foliated rocksindependent of lithology contrast. The developing structures are called ‘Foliation boudinagestructures (FBSs)’ and show evidence for both ductile and brittle deformation. They arerecognized in rocks by perturbations in monotonous foliation adjacent to a centraldiscontinuity, mostly filled with vein material.Foliation boudinage structures have been studied in the Çine Massif in SW-Turkey andthe Furka Pass-Urseren Zone in central Switzerland. Four common types have beendistinguished in the field, named after vein geometries in their boudin necks in sectionsnormal to the boudin axis: lozenge-, crescent-, X- and double crescent- type FBSs. Lozenge-type FBSs are symmetric and characterized by lozenge-shaped veins in their boudin neck withtwo cusps facing opposite sides.