Lower Miocene Alluvial Deposits of the Po¾e¹ka Mt. (Pannonian Basin, Northern Croatia): Cycles, Megacycles and Tectonic Implications
<div>In the area of the present Po¾e¹ka Mt. braided alluvial fans were</div><div>formed during the Early Miocene above the subsiding Cretaceous-</div><div>Palaeogene basement. Due to autocyclic processes, i.e. lateral migration</div><div>...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Croatian Geological Survey
2010-11-01
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| Series: | Geologia Croatica |
| Subjects: | |
| Online Access: | http://www.geologia-croatica.hr/ojs/index.php/GC/article/view/279 |
| Summary: | <div>In the area of the present Po¾e¹ka Mt. braided alluvial fans were</div><div>formed during the Early Miocene above the subsiding Cretaceous-</div><div>Palaeogene basement. Due to autocyclic processes, i.e. lateral migration</div><div>of flows due to vertical aggradation of longitudinal bars, or</div><div>migration of the main trench, small-scale fining-upward cycles were</div><div>formed. The complete succession of the alluvial deposits is composed</div><div>of two fining-upward megacycles, which are the consequence of allocyclic</div><div>influences, i.e. the pulsating character of synsedimentary tectonics.</div><div>Megacycles were developed parallel to backstepping of the</div><div>front of the fault scarp towards the mountain massif, caused by normal</div><div>faulting along the active margin of an extensional basin. This</div><div>kind of depositional style indicates that the Sava fault operated as a</div><div>normal fault at the beginning of its life during the Early Miocene,</div><div>probably the Ottnangian.</div> |
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| ISSN: | 1330-030X 1333-4875 |