Extensional basins in the tectonically bimodal central Apennines fold-thrust belt, Italy: Response to corner flow above a subducting slab in retrograde motion

Abstract

Research Article| October 01, 1999 Extensional basins in the tectonically bimodal central Apennines fold-thrust belt, Italy: Response to corner flow above a subducting slab in retrograde motion G. P. Cavinato; G. P. Cavinato 1CNR, Centro di Studio per il Quaternario e l'Evoluzione Ambientale, Dipartimento Scienze della Terra, Università di Roma "La Sapienza," Roma 00185, Italy Search for other works by this author on: GSW Google Scholar P. G. De Celles P. G. De Celles 2Department of Geosciences, University of Arizona, Tucson, Arizona 85721, USA Search for other works by this author on: GSW Google Scholar Author and Article Information G. P. Cavinato 1CNR, Centro di Studio per il Quaternario e l'Evoluzione Ambientale, Dipartimento Scienze della Terra, Università di Roma "La Sapienza," Roma 00185, Italy P. G. De Celles 2Department of Geosciences, University of Arizona, Tucson, Arizona 85721, USA Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1999) 27 (10): 955–958. https://doi.org/10.1130/0091-7613(1999)027<0955:EBITTB>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation G. P. Cavinato, P. G. De Celles; Extensional basins in the tectonically bimodal central Apennines fold-thrust belt, Italy: Response to corner flow above a subducting slab in retrograde motion. Geology 1999;; 27 (10): 955–958. doi: https://doi.org/10.1130/0091-7613(1999)027<0955:EBITTB>2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract The Apennines fold-thrust belt has developed over the past ∼20 m.y. in response to southeastward retrograde migration of the Adriatic trench in a region of ongoing subduction but little plate convergence. The orogenic belt is characterized by a gently sloping southwestern flank in a state of regional extensional collapse, and a steeply sloping northeastern flank in regional contraction. In any given area in the central Apennines, the chronologies of thrusting and subsequent extension provide an estimate of the time required for attainment of high elevation (2.5–3.0 km). The time between initial extension and eruption of local ultramafic lavas provides an estimate of the time required to collapse by regional crustal thinning. These estimates suggest that the northeastern, contractional flank of the range is rising at least twice as fast as the southwestern flank is collapsing. We propose that the bimodal state of stress in the Apennines is maintained by corner flow in the mantle wedge beneath the crest of the range. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.