![Professor NICK SCHOFIELD Professor NICK SCHOFIELD](/img/200x200/staffpages/uploads/s04ns3/avatar/T7J82k9lchh2SczofbSVJoIsLBUCMMrwI15MLf5S.jpeg)
Professor NICK SCHOFIELD
Personal Chair
- About
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- Email Address
- n.schofield@abdn.ac.uk
- Telephone Number
- +44 (0)1224 272096
- School/Department
- School of Geosciences
Biography
Nick Schofield is a Professor of Igneous and Petroleum Geology. He specializes in the seismic and field interpretation of intrusive and extrusive sequences in volcanic terranes and their interaction with hydrocarbon systems.
He is a multi-award winning scientist at the forefront of aiding industry in understanding challenging volcanic geology in the subsurface globally.
External roles include sitting on the IODP (Integrated Ocean Drilling Program) Science Evaluation Panel (SEP) and the UK-IODP program advisory group (PAG)
Nick is the current Director of the world-renowned Integrated Petroleum Geoscience MSc in the School of Geosciences
- Research
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Research Overview
- Geology and Petroleum Geology West of Shetland
- Geology of NE Atlantic Margin
- Seismic Interpretation of Volcanics
- Petroleum Geology
- Evolution of Sedimentary Basins affected by Volcanism
- Sill Complexes
- Intra-Lava hydrocarbon plays (e.g. Rosebank)
- Lava field stratigraphy
- North Atlantic Igneous Province
- South Australian Volcanism
- Salt-Igneous interaction
- Publications
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Page 1 of 1 Results 1 to 83 of 83
Look-ahead-while-drilling resistivity tools and their role in drilling sedimentary basins containing complex volcanic geology
Petroleum Geoscience, vol. 30, no. 3Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1144/petgeo2024-012
- [ONLINE] View publication in Scopus
Lithological influence on sill geometry in sedimentary basins: Controls and recognition in reflection seismic data
Basin Research, vol. 36, no. 2, e12857Contributions to Journals: ArticlesPetroleum generation and migration through the Faroe-Shetland Basin - The role of Igneous Intrusions
Petroleum Geoscience, vol. 30, no. 2Contributions to Journals: ArticlesThe magma plumbing system of the Northern Carnarvon Basin, offshore Australia: multiscale controls on basin-wide magma emplacement, and implications for petroleum exploration
Geological Society Special Publications , vol. 547, no. 1Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1144/SP547-2023-143
The Impact of Igneous Intrusions on Sedimentary Host Rocks: Insights from Field Outcrop and Subsurface Data
Petroleum Geoscience, vol. 30, no. 1, pp. 2022-2086Contributions to Journals: ArticlesUncertainties in Ray-Tracing Tomography Models Used for Sub-Basalt Seismic Imaging
Pure and Applied Geophysics, vol. 180, pp. 145-156Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1007/s00024-022-03199-2
3D seismic reflection evidence for lower crustal intrusions beneath the Faroe-Shetland Basin, NE Atlantic Margin
Journal of the Geological Society , vol. 180, no. 5, jgs2022-172Contributions to Journals: ArticlesNature and preservation of Late Jurassic breakup-related volcanism in the carnarvon basin, North West shelf, Australia
Marine and Petroleum Geology, vol. 153, 106304Contributions to Journals: ArticlesNew insights into the structure, geology and hydrocarbon prospectivity along the central-northern Corona Ridge, Faroe-Shetland Basin
Chapters in Books, Reports and Conference Proceedings: Conference Proceedings- [ONLINE] View publication in Scopus
New insights on the origin of Barra Volcanic Ridge System, offshore Ireland: a long distance influence of the Iceland mantle plume
Marine and Petroleum Geology, vol. 152, 106237Contributions to Journals: ArticlesSeismic wave propagation around subsurface igneous sill complexes
Marine and Petroleum Geology, vol. 152, 106232Contributions to Journals: ArticlesAlkaline sill intrusions in sedimentary basins: emplacement of the Mussentuchit Wash Sill in San Rafael Swell, Utah
Journal of the Geological Society , vol. 180, no. 1Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1144/jgs2021-139
Challenges and opportunities for hydrocarbon exploration within the Mesozoic sub-basalt plays of the Norwegian Atlantic Margin Petroleum Geoscience
Petroleum Geoscience, vol. 28, no. 4, pp. 1-23Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1144/petgeo2022-022
- [ONLINE] View publication in Scopus
New Insights into the Structure, Geology and Hydrocarbon Prospectivity along the Central-Northern Corona Ridge, Faroe-Shetland Basin
Petroleum Geoscience, vol. 28, 2021-090Contributions to Journals: ArticlesPaleogene volcanic rocks in the northern Faroe–Shetland Basin and Møre Marginal High: understanding lava field stratigraphy
Geological Society Special Publications , vol. 495, pp. 199-235Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1144/SP495-2019-13
- [ONLINE] View publication in Scopus
Paleogene drainage system evolution in the NE Faroe-Shetland Basin
Journal of the Geological Society , vol. 179, no. 5, jgs2021-121Contributions to Journals: ArticlesVirtual field trips utilizing virtual outcrop: construction, delivery and implications for the future
Geoscience Communication, vol. 5, no. 3, pp. 227-249Contributions to Journals: ArticlesApplication of a probability model to detect unrecognised igneous intrusions in sedimentary basins
The APPEA Journal, vol. 62, pp. S426-S430Contributions to Journals: Abstracts- [ONLINE] DOI: https://doi.org/10.1071/AJ21051
Seismic, petrophysical and petrological constraints on the alteration of igneous rocks in the Northern Carnarvon Basin, Western Australia: implications for petroleum exploration and drilling operations
The APPEA Journal, vol. 62, no. 1, pp. 196-222Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1071/AJ21172
Transport of mafic magma through the crust and sedimentary basins: Jameson Land, East Greenland
Journal of the Geological Society , vol. 179, no. 3, jgs2021-043Contributions to Journals: Articles3D seismic reflection constraints on the emplacement of mafic laccoliths and their role in shallow crustal magma transport: A case study from the Ceduna sub-basin, Great Australian Bight
Marine and Petroleum Geology, vol. 135, 105419Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1016/j.marpetgeo.2021.105419
- [ONLINE] View publication in Scopus
Geology and Petroleum Prospectivity of the Sea of Hebrides Basin and Minch Basin, Offshore Northwest Scotland
Petroleum Geoscience, vol. 27, no. 4, petgeo2021-003Contributions to Journals: ArticlesOverpressure transmission through igneous intrusions: An unrecognized drilling hazard in volcanic affected basins?
Chapters in Books, Reports and Conference Proceedings: Conference Proceedings- [ONLINE] DOI: https://doi.org/10.3997/2214-4609.202010962
- [ONLINE] View publication in Scopus
Sorry to Intrude, but is it time to checkout of the “Motel Theory” in the Faroe-Shetland?
Chapters in Books, Reports and Conference Proceedings: Conference Proceedings- [ONLINE] DOI: https://doi.org/10.3997/2214-4609.202011672
- [ONLINE] View publication in Scopus
Storing CO2 in buried volcanoes
Contributions to Journals: Conference Articles- [ONLINE] DOI: https://doi.org/10.1071/AJ20056
Observations of reservoir quality alteration in proximity to igneous intrusions for two distinct sandstones units in Scotland
Marine and Petroleum Geology, vol. 129, 105071Contributions to Journals: ArticlesReply to discussion on ‘Palaeogeographical evolution of the Rattray Volcanic Province, Central North Sea’, by Quirie et al. 2020 (JGS, 177, 718–737)
Journal of the Geological Society, vol. 178, no. 3, jgs2021-011Contributions to Journals: Comments and Debates- [ONLINE] https://www.lyellcollection.org/doi/10.1144/jgs2021-011
- [ONLINE] DOI: https://doi.org/10.1144/jgs2021-011
- [ONLINE] View publication in Scopus
Emplacement of the Little Minch Sill Complex, Sea of Hebrides Basin, NW Scotland
Journal of the Geological Society , vol. 178, no. 3, jgs2020-177Contributions to Journals: ArticlesInside the volcano: Three-dimensional magmatic architecture of a buried shield volcano
Geology, vol. 49, no. 3, pp. 243-247Contributions to Journals: ArticlesLinking surface and subsurface volcanic stratigraphy in the Turkana Depression of the East African Rift System
Journal of the Geological Society , vol. 178, no. 1, ARTN jgs2020-110Contributions to Journals: ArticlesIgneous Intrusions: Sills, Dykes and Plutons
Encyclopedia of Geology. Second Edition edition. Elsevier, pp. 313-329, 17 pagesChapters in Books, Reports and Conference Proceedings: Chapters- [ONLINE] DOI: https://doi.org/10.1016/B978-0-08-102908-4.00112-0
- [ONLINE] View publication in Scopus
The spatial distribution of igneous centres along the Norwegian Atlantic Margin (Møre and Vøring) and their relationship to magmatic plumbing systems
Journal of the Geological Society , vol. 178, no. 5, ARTN jgs2020-192Contributions to Journals: ArticlesUK oil and gas fields: an overview
United Kingdom Oil and Gas Fields: 50th Anniversary Commemorative Volume. Goffey, G., Gluyas, J. (eds.). 1 edition. Geological Society of London, pp. 3-18, 16 pagesChapters in Books, Reports and Conference Proceedings: Chapters- [ONLINE] DOI: https://doi.org/10.1144/m52-2019-48
- [OPEN ACCESS] http://aura.abdn.ac.uk/bitstream/2164/17411/1/Goffey_etal_UK_oil_and_VOR.pdf
Palaeogeographical evolution of the Rattray Volcanic Province, Central North Sea
Journal of the Geological Society , vol. 177, no. 4, pp. 718-737Contributions to Journals: ArticlesUK Rockall prospectivity: re-awakening exploration in a frontier basin
Petroleum Geoscience, vol. 26, no. 2, pp. 247-271Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1144/petgeo2019-098
Geology and petroleum prospectivity of the Larne and Portpatrick basins, North Channel, offshore SW Scotland and Northern Ireland
Petroleum Geoscience, vol. 26, no. 2, pp. 272-302Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1144/petgeo2019-134
Overpressure transmission through interconnected igneous intrusions
AAPG Bulletin, vol. 104, no. 2, pp. 285-303Contributions to Journals: Articles- [ONLINE] https://pubs.geoscienceworld.org/aapgbull/article/104/2/285/580563/Overpressure-transmission-through-interconnected
- [ONLINE] DOI: https://doi.org/10.1306/05091918193
- [OPEN ACCESS] http://aura.abdn.ac.uk/bitstream/2164/13683/1/Schofield_etal_AAPGBull_Overpressure_Transfer_VOR.pdf
- [ONLINE] View publication in Scopus
Structural and lithological controls on the architecture of igneous intrusions: examples from the NW Australian Shelf
Petroleum Geoscience, vol. 26, no. 1, pp. 50-69Contributions to Journals: ArticlesRaiders of the Lost Mud: The geology behind drilling incidents within the Balder Formation around the Corona Ridge, West of Shetland
Petroleum Geoscience, vol. 26, no. 1, pp. 110-125Contributions to Journals: ArticlesMaking Oil From Magma
Geological Society Special Publications , vol. 484, pp. 295-303Contributions to Journals: ArticlesThe Warnie volcanic province: Jurassic intraplate volcanism in Central Australia
Gondwana Research, vol. 76, pp. 322-347Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1016/j.gr.2019.06.012
- [OPEN ACCESS] http://aura.abdn.ac.uk/bitstream/2164/14820/1/Hardman_Warnie_Paper_Accepted.pdf
- [ONLINE] View publication in Mendeley
Overpressure transmission through igneous intrusions: An unrecognized drilling hazard in volcanic affected basins?
Exploration Geophysics, vol. 2019, no. 1, pp. 1-5Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1080/22020586.2019.12073096
- [ONLINE] View publication in Scopus
Modeling petroleum expulsion in sedimentary basins: The importance of igneous intrusion timing and basement composition
Geology, vol. 47, no. 10, pp. 904-908Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1130/G46578.1
- [OPEN ACCESS] http://aura.abdn.ac.uk/bitstream/2164/13045/1/Gardiner_etal_Geol_Modeling_petroleum_expulsion.pdf
- [ONLINE] https://pubs.geoscienceworld.org/gsa/geology/article/573069/Modeling-petroleum-expulsion-in-sedimentary-basins
- [ONLINE] View publication in Mendeley
- [ONLINE] View publication in Scopus
Structural signatures of igneous sheet intrusion propagation
Journal of Structural Geology, vol. 125, pp. 148-154Contributions to Journals: ArticlesSeismic geomorphology linked to sequence stratigraphy of an Eocene delta in the Outer Moray Firth, UKCS
Marine and Petroleum Geology, vol. 104, pp. 150-167Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1016/j.marpetgeo.2019.03.014
- [ONLINE] View publication in Scopus
- [ONLINE] View publication in Mendeley
The Rattray Volcanics: Mid-Jurassic fissure volcanism in the UK Central North Sea
Journal of the Geological Society , vol. 176, pp. 462-481Contributions to Journals: ArticlesControls on the Distribution of Volcanism and Intra-Basaltic Sediments in the Cambo-Rosebank Region, West of Shetland
Petroleum Geoscience, vol. 25, no. 1, pp. 71-89Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1144/petgeo2017-061
- [OPEN ACCESS] http://aura.abdn.ac.uk/bitstream/2164/11802/1/RosebankPaper.pdf
- [ONLINE] View publication in Mendeley
Failure to predict igneous rocks encountered during exploration of sedimentary basins: a case study of the Bass Basin, Southeastern Australia
Marine and Petroleum Geology, vol. 99, pp. 526-547Contributions to Journals: ArticlesOverthickening of sedimentary sequences by igneous intrusions
Journal of the Geological Society , vol. 176, no. 1, pp. 46-60Contributions to Journals: ArticlesStructural and lithological controls on the geometry and morphology of igneous intrusions: a 3D seismic case study from the Exmouth sub-basin, NW Shelf
Exploration Geophysics, vol. 2019, no. 1, pp. 1-5Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1080/22020586.2019.12072958
- [ONLINE] View publication in Scopus
The spatial distribution of igneous intrusions in the Exmouth Plateau and Exmouth Sub Basin, North West Shelf, Western Australia
Exploration Geophysics, vol. 2019, no. 1, pp. 1-5Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1080/22020586.2019.12072966
- [ONLINE] View publication in Scopus
The importance of subsurface lithology in controlling magma storage v. eruption: an example from offshore southern Australia
Journal of the Geological Society , vol. 175, no. 4, pp. 694-703Contributions to Journals: ArticlesMagma Plumbing Systems: A Geophysical Perspective
Journal of Petrology, vol. 59, no. 6, pp. 1217-1251Contributions to Journals: ArticlesProlonged dynamic support from the Icelandic plume of the NE Atlantic margin
Journal of the Geological Society , vol. 175, no. 3, pp. 396-410Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1144/jgs2017-088
- [OPEN ACCESS] http://aura.abdn.ac.uk/bitstream/2164/11803/1/Hardman_etal_2017b.pdf
Igneous intrusions in the Faroe Shetland basin and their implications for hydrocarbon exploration: new insights from well and seismic data
Marine and Petroleum Geology, vol. 92, pp. 733-753Contributions to Journals: ArticlesSeismic interpretation of sill complexes in sedimentary basins: implications for the sub-sill imaging problem
Journal of the Geological Society , vol. 175, no. 2, pp. 193-209Contributions to Journals: ArticlesThe architecture of submarine monogenetic volcanoes – insights from 3D seismic data
Basin Research, vol. 30, no. 1, pp. 437-451Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1111/bre.12230
- [ONLINE] View publication in Scopus
Challenges of future exploration within the UK Rockall Basin
Chapters in Books, Reports and Conference Proceedings: Conference ProceedingsUnderstanding the challenges of sub-sill seismic imaging using full-waveform seismic modelling
Contributions to Conferences: Papers- [ONLINE] DOI: https://doi.org/10.1190/segam2018-2997634.1
- [ONLINE] View publication in Scopus
The shallow depth emplacement of mafic intrusions on a magma-poor rifted margin: An example from the Bight Basin, Southern Australia
Marine and Petroleum Geology, vol. 88, pp. 605-616Contributions to Journals: ArticlesSource rock maturation owing to igneous intrusion in rifted margin petroleum systems
Journal of the Geological Society , vol. 174, no. 6, pp. 979-987Contributions to Journals: Articles- [ONLINE] http://jgs.lyellcollection.org/content/jgs/174/6/979.full.pdf
- [ONLINE] DOI: https://doi.org/10.1144/jgs2017-011
- [OPEN ACCESS] http://aura.abdn.ac.uk/bitstream/2164/10724/5/MuirheadSourceRockMaturationIntrusionManuscript_1_.docx
- [OPEN ACCESS] http://aura.abdn.ac.uk/bitstream/2164/10724/9/Figure_1_.pdf
- [OPEN ACCESS] http://aura.abdn.ac.uk/bitstream/2164/10724/6/Figure_2_1_.pdf
- [OPEN ACCESS] http://aura.abdn.ac.uk/bitstream/2164/10724/3/Figure_3.pdf
- [OPEN ACCESS] http://aura.abdn.ac.uk/bitstream/2164/10724/8/Figure_4.pdf
- [OPEN ACCESS] http://aura.abdn.ac.uk/bitstream/2164/10724/2/Figure_5.pdf
- [OPEN ACCESS] http://aura.abdn.ac.uk/bitstream/2164/10724/1/Figure_6.pdf
- [OPEN ACCESS] http://aura.abdn.ac.uk/bitstream/2164/10724/7/SRMSTable_1.pdf
- [OPEN ACCESS] http://aura.abdn.ac.uk/bitstream/2164/10724/4/SRMSTable_2.pdf
Three-Dimensional Seismic Imaging of Ancient Submarine Lava Flows: An Example From the Southern Australian Margin
Geochemistry, Geophysics, Geosystems , vol. 18, no. 11, pp. 3840-3853Contributions to Journals: Articles3D structure and formation of hydrothermal vent complexes at the Paleocene-Eocene transition, the Møre Basin, mid-Norwegian margin
Interpretation, vol. 5, no. 3, pp. SK65-SK81Contributions to Journals: ArticlesIntroduction to special section: Subsurface expression of igneous systems and their impacts on petroleum systems
Interpretation, vol. 5, no. 3, pp. SKi-SKiiiContributions to Journals: Editorials- [ONLINE] DOI: https://doi.org/10.1190/int-2017-0706-spseintro.1
- [ONLINE] View publication in Scopus
Mafic intrusions, hydrothermal venting and the basalt-sediment transition: Linking onshore and offshore examples from the north atlantic igneous province
Interpretation, vol. 5, no. 3, pp. SK83-SK101Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1190/int-2016-0162.1
- [ONLINE] View publication in Scopus
Mechanisms of overburden deformation associated with the emplacement of the Tulipan sill, mid-Norwegian margin
Interpretation, vol. 5, no. 3, pp. SK23-SK38Contributions to Journals: ArticlesSubsurface fluid flow focused by buried volcanoes in sedimentary basins: Evidence from 3D seismic data, Bass Basin, offshore southeastern Australia
Interpretation, vol. 5, no. 3, pp. SK39-50Contributions to Journals: ArticlesStratigraphic Overview of Palaeogene Tuffs in the Faroe-Shetland Basin, NE Atlantic Margin
Journal of the Geological Society , vol. 174, no. 4, pp. 627-645Contributions to Journals: ArticlesHydrothermal vent complexes offshore Northeast Greenland: A potential role in driving the PETM
Earth and Planetary Science Letters, vol. 467, pp. 72-78Contributions to Journals: Articles3D seismic imaging of the shallow plumbing system beneath the Ben Nevis Monogenetic Volcanic Field: Faroe-Shetland Basin
Journal of the Geological Society , vol. 174, no. 3, pp. 468-485Contributions to Journals: ArticlesRegional Magma Plumbing and emplacement mechanisms of the Faroe-Shetland Sill Complex: Implications for magma transport and petroleum systems within sedimentary basins
Basin Research, vol. 29, no. 1, pp. 41-63Contributions to Journals: ArticlesBasin-scale architecture of deeply emplaced sill complexes: Jameson Land, East Greenland
Journal of the Geological Society , vol. 174, no. 1, pp. 23-40Contributions to Journals: ArticlesLateral magma flow in mafic sill complexes
Geosphere, vol. 12, no. 3, pp. 809-841Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1130/GES01256.1
- [OPEN ACCESS] http://aura.abdn.ac.uk/bitstream/2164/6098/1/Geosphere_2016_Magee_809_41.pdf
Distribution, chronology and causes of Cretaceous - Cenozoic magmatism along the magma-poor rifted southern Australian margin: Links between mantle melting and basin formation
Marine and Petroleum Geology, vol. 73, pp. 271-298Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1016/j.marpetgeo.2016.03.003
- [ONLINE] View publication in Scopus
Frontier exploration and the North Atlantic Igneous Province: new insights from a 2.6 km offshore volcanic sequence in the NE Faroe–Shetland Basin
Journal of the Geological Society , vol. 173, no. 2, pp. 320-336Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1144/jgs2015-069
- [OPEN ACCESS] http://aura.abdn.ac.uk/bitstream/2164/8255/1/7713_1_merged_1441016373.pdf
Palaeogene Basaltic Tuffs in the Faroe-Shetland Basin and their Impact on the Petroleum System
Janet Watson: The Future of Hydrocarbon ExplorationContributions to Conferences: PostersSills in Sedimentary Basins and Petroleum Systems
Physical Geology of Shallow Magmatic Systems. Breitkreuz, C., Rocchi, S. (eds.). Springer, pp. 273-294, 22 pagesChapters in Books, Reports and Conference Proceedings: Chapters- [ONLINE] DOI: https://doi.org/10.1007/11157_2015_17
The Impact of Igneous Intrusions on the Petroleum System: Implications on Reservoir Quality, Source Rock and Exploration
Janet Watson: The Future of Hydrocarbon ExplorationContributions to Conferences: Posters- [ONLINE] https://www.geolsoc.org.uk/jwatson16
Mobilizing Salt: Magma-Salt Interactions
Geology, vol. 42, no. 7, pp. 599-602Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1130/G35406.1
Development of intra-basaltic lava-field drainage systems within the Faroe–Shetland Basin
Petroleum Geoscience, vol. 19, no. 3, pp. 273-288Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1144/petgeo2012-061
Sill morphology and comparison of brittle and non-brittle emplacement mechanisms
Journal of the Geological Society , vol. 169, no. 2, pp. 127-141Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1144/0016-76492011-078
Seismic analysis workflow for reservoir characterization in the vicinity of salt
First Break, vol. 28, no. 10, pp. 107-113Contributions to Journals: Articles- [ONLINE] View publication in Scopus
Magma fingers and host rock fluidization in the emplacement of sills
Geology, vol. 38, no. 1, pp. 63-66Contributions to Journals: Articles- [ONLINE] DOI: https://doi.org/10.1130/G30142.1