none 10.1144/petgeo2016-073 Geological Society of London Geological Society of London 1881 89863281 78679 2024072322130800158 10.1144 2024-07-24T06:12:12Z 2017-04-27T20:10:22Z 6 Petroleum Geoscience PG 1354-0793 2041-496X 11 2017 11 2017 23 4 Stephen Stukins Department of Earth Sciences, The Natural History Museum, Cromwell Road, London SW7 5BD, UK Department of Geology and Petroleum Geology, King's College, Meston Building, Aberdeen AB24 3UE, UK https://orcid.org/0000-0003-3551-8283 Duncan McIlroy Department of Earth Sciences, Memorial University of Newfoundland, St John's, Newfoundland A1B 3X5, Canada David W. Jolley Department of Geology and Petroleum Geology, King's College, Meston Building, Aberdeen AB24 3UE, UK https://orcid.org/0000-0003-0909-2952 Accurate palaeoenvironmental analysis is at the heart of producing reliable interpretations and depositional models. This study demonstrates a multivariate statistical approach to facies analysis based on relationships between grain size and quantitative palynology. Our methodology has the advantage that it can be used on small amounts of sample, such as core or well cuttings, as the basis for facies analysis. Proof of concept studies involving the collection of grain-size and palynological datasets from well-exposed outcrops of the Middle Jurassic, Lajas Formation of the Neuquén Basin, Argentina, demonstrate that canonical correspondence analysis can be used to consistently recognize facies and aid in the determination of depositional environments. This study demonstrates the link between depositional facies, grain-size distribution, palynomorph hydrodynamics and assemblage taphonomy of palynomorphs. This knowledge can be transferred into a semi-automated statistical facies prediction technique for the subsurface in complex depositional settings, particularly when calibrated against conventional sedimentary facies analysis. Supplementary material: The full set of grain-size data and statistical scores are available at: https://doi.org/10.6084/m9.figshare.c.3745481.v1 04 27 2017 11 2017 395 402 10.1144/petgeo2016-073 1 10.1144/crossmark-policy www.lyellcollection.org true 2016-05-06 2017-02-03 2017-03-23 2017-04-27 https://doi.org/10.15223/policy-002 10.1144/petgeo2016-073 https://www.lyellcollection.org/doi/10.1144/petgeo2016-073 https://www.lyellcollection.org/doi/pdf/10.1144/petgeo2016-073 https://geoscienceworld.org/pg/article-lookup?doi=10.1144/petgeo2016-073 10.1144/1354-079303-611 10.1016/j.marmicro.2006.01.001 10.1144/TMS001.11 10.1086/jg.70.6.30066373 10.4095/215638 10.2110/jsr.2015.19 The Neuquén Basin, Argentina: A Case Study in Sequence Stratigraphy and Basin Dynamics Howell J.A. 1 252 2005 The Neuquén Basin: an overview Howell, J.A., Schwarz, E., Spalletti, L. & Veiga, G.D. (eds) 2005. The Neuquén Basin: an overview. 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