The Clay and Závist faults – one large strike-slip fault in the east part of Barrandian (Bohemian Massif)

KNÍŽEK, Martin and Rostislav MELICHAR. The Clay and Závist faults – one large strike-slip fault in the east part of Barrandian (Bohemian Massif). In 12th Meeting of the Central European Tectonic Studies Group. 2014. ISSN 0072-100X.

Basic information

• Original name: The Clay and Závist faults – one large strike-slip fault in the east part of Barrandian (Bohemian Massif)
• Authors: KNÍŽEK, Martin (203 Czech Republic, guarantor, belonging to the institution) and Rostislav MELICHAR (203 Czech Republic, belonging to the institution).
• Edition: 12th Meeting of the Central European Tectonic Studies Group, 2014.

Other information

• Original language: English
• Type of outcome: Conference abstract
• Field of Study: 10500 1.5. Earth and related environmental sciences
• Country of publisher: Poland
• Confidentiality degree: is not subject to a state or trade secret
• RIV identification code: RIV/00216224:14310/14:00075391
• Organization unit: Faculty of Science
• ISSN: 0072-100X
• Keywords in English: Barrandian; Závist Fault; Clay Fault; strike-slip fault; stratigraphy fault-cut diagram

Abstract

The Clay and Závist faults are connected one another not only by the same direction but also by continuous change of their dip. The Clay Fault gradually changes its steep dipping to NW on the SW to subvertical orientation on the NE. Here, near Dobříš town, Závist Fault continuously varies analogously from subvertical position (on SW) to medium dipping to the SSE on the NE. It is obvious, that both faults are forming one single structure, whose surface is screwed into form of propeller. Construction of stratigraphy fault-cut (SFD) diagram was used to testify, whether faults movements are compatible (Fig. 1). Cross-cutting fault-cut lines indicate partially rotational nature of movement along the unified fault surface. The axis of rotation is projected to place near Dobříš town, where both walls of the fault take place in the Proterozoic sediments. Shared activity of both faults corresponds to sinistral strike-slip movement with a slight rotation producing different components relating to distance from rotational axis. As the main phase of tectonic movement is partly synchronous with granodiorite intrusion, we assume the Tournaisian and Visean age of tectonic activity along the fault.