Syntectonic deposits and punctuated limb rotation in an Albian submarine transpressional fold (Mutriku village, Basque-Cantabrian basin, northern Spain)

Abstract

Research Article| March 01, 2002 Syntectonic deposits and punctuated limb rotation in an Albian submarine transpressional fold (Mutriku village, Basque-Cantabrian basin, northern Spain) L.M. Agirrezabala; L.M. Agirrezabala 1Estratigrafia eta Paleontologia Saila, Euskal Herriko Unibertsitatea, 644 postakutxa, 48080 Bilbao, Spain Search for other works by this author on: GSW Google Scholar H.G. Owen; H.G. Owen 2Natural History Museum, Cromwell Road, London SW7 5BD, UK Search for other works by this author on: GSW Google Scholar J. García-Mondéjar J. García-Mondéjar 3Estratigrafia eta Paleontologia Saila, Euskal Herriko Unibertsitatea, 644 postakutxa, 48080 Bilbao, Spain Search for other works by this author on: GSW Google Scholar Author and Article Information L.M. Agirrezabala 1Estratigrafia eta Paleontologia Saila, Euskal Herriko Unibertsitatea, 644 postakutxa, 48080 Bilbao, Spain H.G. Owen 2Natural History Museum, Cromwell Road, London SW7 5BD, UK J. García-Mondéjar 3Estratigrafia eta Paleontologia Saila, Euskal Herriko Unibertsitatea, 644 postakutxa, 48080 Bilbao, Spain Publisher: Geological Society of America Received: 28 Jun 2001 Revision Received: 22 Aug 2001 Accepted: 26 Oct 2001 First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (2002) 114 (3): 281–297. https://doi.org/10.1130/0016-7606(2002)114<0281:SDAPLR>2.0.CO;2 Article history Received: 28 Jun 2001 Revision Received: 22 Aug 2001 Accepted: 26 Oct 2001 First Online: 01 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 L.M. Agirrezabala, H.G. Owen, J. García-Mondéjar; Syntectonic deposits and punctuated limb rotation in an Albian submarine transpressional fold (Mutriku village, Basque-Cantabrian basin, northern Spain). GSA Bulletin 2002;; 114 (3): 281–297. doi: https://doi.org/10.1130/0016-7606(2002)114<0281:SDAPLR>2.0.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 SocietyGSA Bulletin Search Advanced Search Abstract Deep-water syntectonic deposits and angular unconformities record the denudation and deformation history of the middle Cretaceous Aitzeta structure, interpreted here as a monoclinal syncline associated with the high-angle reverse Mutriku fault (Basque- Cantabrian basin, northern Spain). Sedimentological and structural analyses, combined with a precise chronostratigraphy based on ammonites, permit us to document in detail the history of this syncline during ∼0.53 m.y. (Late Albian, Callihoplites auritus Subzone). Tectonism occurred during two major and two minor short- lived pulses. The sedimentary signatures of these pulses include unconformities and resedimented deposits derived from the uplifted rocks, showing inverted clast stratigraphy. In contrast, intervening phases of tectonic calm were characterized by gentle hemipelagic sedimentation. The major tectonic pulses were characterized by strong rotation and uplift of the syncline limb. The two major pulses coincided with the lower and upper limits of the auritus Subzone, respectively, and resulted in the following limb-rotation and uplift values: 42° and 250 m in the first pulse and 66° and 100–140 m in the second pulse. A maximum duration of 0.12 m.y. for each major pulse has been calculated, from which limb-rotation and uplift rates of 0.35°/k.y. and 2.08 m/k.y. (first pulse) and 0.55°/k.y. and 0.83–1.16 m/ k.y. (second pulse) are estimated. Growth strata and angular unconformity geometries, temporal variation of deformation rates, and bedding-parallel faulting indicate folding by progressive limb rotation and associated flexural slip. Local northwest- southeast compression is deduced in formation of the Aitzeta syncline. The presence of bedding-parallel oblique faulting and minor drag folds suggests a component of right-oblique movement along the Mutriku fault. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.