caa a22 4500 477064582 CHVBK 20180405111409.0 cr unu---uuuuu 170330e19960601xx s 000 0 eng 10.1007/BF02422241 doi (NATIONALLICENCE)springer-10.1007/BF02422241 Tavarnelli E. Dipartimento di Scienze della Terra, Via delle Cerchia 3, I-53100, Siena, Italy aut The effects of pre-existing normal faults on thrust ramp development: An example from the northern Apennines, Italy [Elektronische Daten] [E. Tavarnelli] The Umbria-Marche foreland fold-and-thrust belt in the northern Apennines of Italy provides excellent evidence to test the hypothesis of synsedimentary-structural control on thrust ramp development. This orogenic belt consists of platform and pelagic carbonates, Late Triassic to Miocene in age, whose deposition was controlled by significant synsedimentary extension. Normal faulting, mainly active from Jurassic through Late Cretaceous-Paleogene time, resulted in significant lateral thickness variability within the related stratigraphic sequences. By Late Miocene time the sedimentary cover was detached from the underlying basement and was deformed by east-verging folds and west-dipping thrusts. Two restored balanced cross sections through the southernmost part of the belt show a coincidence between the early synsedimentary normal faults and the late thrust fault ramps. These evidences suggest that synsedimentary tectonic structures, such as faults and the related lithological lateral changes, can be regarded as mechanically important controlling factors in the process of thrust ramp development during positive tectonic inversion processes. Springer-Verlag GmbH & Co KG, 1996 Umbria-Marche Apennines nationallicence Synsedimentary normal faults nationallicence Thrust ramps nationallicence Mechanical heterogeneities nationallicence Positive tectonic inversion nationallicence Geologische Rundschau Springer-Verlag 85/2(1996-06-01), 363-371 0016-7835 85:2<363 1996 85 531 https://doi.org/10.1007/BF02422241 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02422241 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Tavarnelli E. Dipartimento di Scienze della Terra, Via delle Cerchia 3, I-53100, Siena, Italy aut NATIONALLICENCE 773 0- Geologische Rundschau Springer-Verlag 85/2(1996-06-01), 363-371 0016-7835 85:2<363 1996 85 531 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer