Early Carboniferous siliciclastic-carbonates in east-central Iran versus coeval carbonates of north Iran: record of latest Tournaisian-early Visean tectonic events

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dc.creator Arefifard, Sakineh
dc.creator Vachard, Daniel
dc.date.accessioned 2016-11-01T17:50:23Z
dc.date.available 2016-11-01T17:50:23Z
dc.date.issued 2015-09
dc.identifier.issn 1666-115X es
dc.identifier.uri http://hdl.handle.net/2133/6624
dc.description Three stratigraphic sections of the Early Carboniferous Gachal Formation in the Kalmard area, central Iran were studied. The Gachal Formation shows alternation of siliciclastics and carbonates in repeated cyclic arrangements. The microfacies and depositional environment are described and reconstructed. Facies analyses indicate the presence of seven carbonate and one siliciclastic facies types, which are indicative of back-, inner- and middle-ramp settings. A mixed siliciclastic-carbonate ramp setting is proposed for the depositional environment of the Gachal Formation. This mixed lithology has only been reported from that central Iranian formation. The Mobarak Formation, coeval deposits of the Gachal Formation, in Alborz (northern Iran) is mainly composed of carbonates. The facies analysis of the carbonate portion of the Early Carboniferous Gachal Formation shows some resemblance with those of the Mobarak Formation, even though middle- and outer-ramp facies are more abundant in the Mobarak Formation. During the latest Tournaisianearliest Visean third-order, shallowing-upwards depositional sequences were recognized in the Gachal Formation in the study area. Tectonic activity (fault movements) was the main reason for thickness variations of the Gachal Formation members in these three studied section. Synsedimentary tectonic activity must have been responsible for the platform rising, leading to the erosion that created the siliciclastic influx into the Carboniferous basin in the Kalmard area. Our results show the importance of synsedimentary tectonics on the development of carbonate facies. es
dc.format application/pdf
dc.format.extent 29-44 es
dc.language.iso eng es
dc.publisher Instituto de Fisiografía y Geología. Facultad de Ciencias Exactas, Ingeniería y Agrimensura. Universidad Nacional de Rosario es
dc.rights openAccess es
dc.rights.uri http://creativecommons.org/licenses/by-nc-sa/2.5/ar/ *
dc.source Boletín del Instituto de Fisiografía y Geología 85 es
dc.subject Lower Carboniferous es
dc.subject Central Iran es
dc.subject Carbonate Microfacies es
dc.subject Depositional environment es
dc.subject Sequence stratigraphy es
dc.title Early Carboniferous siliciclastic-carbonates in east-central Iran versus coeval carbonates of north Iran: record of latest Tournaisian-early Visean tectonic events es
dc.type article
dc.type artículo
dc.type publishedVersion
dc.relation.publisherversion http://www.fceia.unr.edu.ar/fisiografia/Vol85.htm es
dc.citation.title Boletín del Instituto de Fisiografía y Geología es
dc.citation.volume 85 es
dc.description.fil Fil: Arefifard, Sakineh. Department of Geology and Geophysics. Texas A&M Universit; Texas; USA es
dc.description.fil Fil: Vachard, Daniel. University of Lille-Sciences and Technologies. Gruson; France es
dc.type.collection articulo
dc.type.version publishedVersion es


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