THE INTRAMOESIAN FAULT: EVOLUTION IN TIME AND SPACE
| Main Authors: | IRINA STANCIU, DUMITRU IOANE |
|---|---|
| Format: | Article Journal |
| Terbitan: |
, 2021
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/5031426 |
Daftar Isi:
- The name Intramoesian Fault was introduced in the scientific literature by Mircea Săndulescu in 1984. Săndulescu (1984) described the fault as being a sinistral transcrustal fault, after several dextral–sinistral displacement variations during geological time. The fault was located in the central part of the Moesian Platform, displaying NW–SE direction; it was continued south of the Danube river up to the Bulgarian Black Sea shelf, and northward underneath the Getic Nappe. Although this is the most accepted model of the Intramoesian Fault, used by many researchers as marker for the Moesian Platform compartments delineation, the Intramoesian Fault proved to be a complex and complicated tectonic target both at local and regional scale (in Space), being differently located on maps throughout history (in Time). The geological mapping of the Intramoesian Fault was not possible, as it does not outcrop and has no topographic expression, being concealed beneath a thick Neogene sedimentary cover, traces of regional faulting being hidden totally. This intriguing tectonic structure, still subject of debate, had a large variety of names and was identified so far as fault, fracture or tectonic contact. An extended documentation on the Intramoesian Fault and the Moesian Platform was carried out within the PhD Thesis “Intramoesian Fault: geophysical detection and regional active (neo)tectonics and geodynamics”, Doctoral School of Geology, Faculty of Geology and Geophysics, University of Bucharest. This PhD study offered the framework for a focused research on geophysical detection of the Intramoesian Fault and its regional tectonics and geodynamics, analysing and integrating a large number of geophysical and geodetic data, as well as geomorphological and geological observations. An updated regional tectonic and geodynamic model was developed within this study, showing that the Intramoesian Fault is composed of a number of segments, laterally displaced by several active regional NE–SW, N–S and W–E faults systems. Due to repeated junctions with the younger NE–SW strike-slip faults, and due to a NE–SW transcurrent fault in the Vrancea wrench tectonics system (Ioane, Stanciu, 2018), the Intramoesian Fault is displaced south–westward in the area close to the Carpathians. North of the Danube, a north–eastward displacement of the Intramoesian Fault was interpreted as due to an indentation of an Argeş – Danube Promontory along the Argeş (W–E) and Gabrovo – Veliko Tarnovo (NE–SW) faults.