@inbook{bac7c3bfb4814c9d9a173163aab583fc,
title = "Inclusion of substrate blocks within a mass transport deposit: A case study from Cerro Bola, Argentina",
abstract = "The preservation of large, relatively undeformed blocks is a characteristic feature of mass transport deposits (MTD). We examine a well-exposed succession at Cerro Bola in La Rioja Province, western Argentina, which comprises mid to late Carboniferous fluvio-deltaic sediments, turbidites and MTD{\textquoteright}s. The main MTD, which is up to 180 m thick and crops out over 8 km, is characterized by allochthonous sandstone blocks that range in size from metres to 100s of metres in length, and are up to tens of metres in thickness. Blocks are preserved throughout the entire MTD, but are typically larger and much more abundant towards its base where they comprise up to ~30 % of the unit, and become progressively smaller and less frequent upward. Blocks were eroded from the underlying unlithified deltaic sands, and incorporated into the MTD during its transport and emplacement, resulting in local gouges and grooves in the substrate along the basal contact of the MTD. Sandstone blocks are interpreted to have undergone progressive abrasion and fragmentation as they rose through the MTD, thereby creating smaller blocks in the upper parts of the unit. We suggest that buoyancy-driven rise combined with the synchronous fragmentation of sandstone blocks that are entrained within a finer matrix, provides a mechanism for the observed distribution of blocks during overall downslope transport of the MTD.",
keywords = "mass-transport deposit, block buoyancy, sandstone blocks, carboniferous, Argentina",
author = "Sobiesiak, {Matheus S.} and Ben Kneller and Alsop, {G. Ian} and Milana, {Juan Pablo}",
note = "This work was carried out with support from CNPq (Conselho Nacional de Desenvolvimento Cient{\'i}fico e Tecnol{\'o}gico) – Brazil and BG-Brazil. We would like to thank the reviewers Claudio Corrado Lucente and Kei Ogata for their suggestions and criticism that helped to improve the manuscript.",
year = "2016",
doi = "10.1007/978-3-319-20979-1_49",
language = "English",
isbn = "9783319209784",
series = " Advances in Natural and Technological Hazards Research ",
publisher = "Springer International Publishing",
pages = "487--496",
editor = "Geoffroy Lamarche and Joshu Mountjoy and Suzanne Bull and Tom Hubble and Sebastian Krastel and Emily Lane and Aaron Micallef and Lorena Moscardelli and Christof Mueller and Ingo Pecher and Susanne Woelz",
booktitle = "Submarine Mass Movements and Their Consequences",
}