Journal
INTERNATIONAL JOURNAL OF EARTH SCIENCES
Volume 101, Issue 3, Pages 747-759Publisher
SPRINGER
DOI: 10.1007/s00531-010-0634-y
Keywords
Anisotropy; Magnetic susceptibility; Pluton; Strike-slip shear zone
Categories
Funding
- Bulgarian-French PHC Rila program La collision Europe-Dinarides: Le cisa-illement alpin majeur de la Maritsa en Bulgarie centrale
- French Ministere des affaires etrangeres et europeennes
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The Kapitan-Dimitrievo pluton was emplaced within the 15 km wide Maritsa shear zone during the Late Cretaceous. It has well-known U-Pb zircon age (78.54 +/- 0.13 Ma) and appears as a late-syntectonic intrusion that marked the last ductile deformation in the Maritsa shear zone. Magnetite is believed to be the main carrier of the magnetic fabric in this pluton, and crystallized mainly late, after the main rock-forming minerals. Two fabrics are recorded, a visible syn-magmatic fabric (due to magma flow) and magnetic late-magmatic fabric (related to regional stresses). Although different, both are mainly related to the shearing along this shear zone. These results constrain in age the dextral strike-slip controlled emplacement and evolution of the Late Cretaceous plutons from Central Bulgaria.
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