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  • Journal article
    Bridges JC, Schwanethal JP, Pearson VK, Paton MD, Greenwood RC, Watson JS, Morgan GHet al., 2004,

    , Astronomy and Geophysics, Vol: 45, Pages: 625-626
  • Journal article
    Watson JS, Pearson VK, Sephton MA, Gilmour Iet al., 2004,

    , International Journal of Astrobiology, Vol: 3, Pages: 107-116, ISSN: 1473-5504
  • Journal article
    Sephton MA, Verchovsky AB, Bland PA, Gilmour I, Grady MM, Wright IPet al., 2003,

    , GEOCHIMICA ET COSMOCHIMICA ACTA, Vol: 67, Pages: 2093-2108, ISSN: 0016-7037
    • Cite
    • Citations: 131
  • Journal article
    Wignall PB, Zonneveld JP, Sephton MA, 2003,

    Carbon and nitrogen isotope disturbances and an end-Norian (Late Triassic) extinction event : comment and reply

    , GEOLOGY, Vol: 7, Pages: e25-e25, ISSN: 0091-7613
  • Journal article
    Watson JS, Pearson VK, Gilmour I, Sephton MAet al., 2003,

    , ORGANIC GEOCHEMISTRY, Vol: 34, Pages: 37-47, ISSN: 0146-6380
    • Cite
    • Citations: 17
  • Journal article
    Sephton MA, Amor K, Franchi IA, Wignall PB, Newton R, Zonneveld JPet al., 2002,

    , GEOLOGY, Vol: 30, Pages: 1119-1122, ISSN: 0091-7613
    • Cite
    • Citations: 76
  • Journal article
    Pearson VK, Sephton MA, Kearsley AT, Bland PA, Franchi IA, Gilmour Iet al., 2002,

    , METEORITICS & PLANETARY SCIENCE, Vol: 37, Pages: 1829-1833, ISSN: 1086-9379
    • Cite
    • Citations: 118
  • Journal article
    Watson JS, Jones DM, Swannell RPJ, van Duin ACTet al., 2002,

    , Organic Geochemistry, Vol: 33, Pages: 1153-1169, ISSN: 0146-6380
  • Journal article
    Verchovsky AB, Sephton MA, Wright IP, Pillinger CTet al., 2002,

    , EARTH AND PLANETARY SCIENCE LETTERS, Vol: 199, Pages: 243-255, ISSN: 0012-821X
    • Cite
    • Citations: 53
  • Journal article
    Sephton MA, Wright IP, Gilmour I, de Leeuw JW, Grady MM, Pillinger CTet al., 2002,

    , PLANETARY AND SPACE SCIENCE, Vol: 50, Pages: 711-716, ISSN: 0032-0633
    • Cite
    • Citations: 67
  • Journal article
    Sephton MA, 2002,

    , NATURAL PRODUCT REPORTS, Vol: 19, Pages: 292-311, ISSN: 0265-0568
    • Cite
    • Citations: 587
  • Conference paper
    Sephton MA, Looy CV, Veefkind RJ, Brinkhuis H, De Leeuw JW, Visscher Het al., 2002,

    Synchronous record of delta C-13 shifts in the oceans and atmosphere at the end of the Permian

    , International Interdisciplinary Conference on Catastrophic Events and Mass Extinctions - Impacts and Beyond, Pages: 455-462

    In conjunction with the profound ecologic crisis at the end of the Permian, the most conspicuous geochemical event is the worldwide negative shift in the carbon isotopic composition (delta(13)C) of both carbonates and sedimentary organic matter. Comparative carbon isotopic analyses of carbonates and the molecular fossils of land plant leaf cuticles from a marine Permian-Triassic transition section in the southern Alps, northeastern Italy, substantiates the concept of synchronous disturbances in oceanic and atmospheric chemistry and, therefore, verifies the primary nature of the end-Permian delta(13)C disturbance. The delta(13)C excursion appears to be a consequence of the ecological crisis, and the global reservoir of soil organic matter may be the only plausible source of C-13-depleted carbon.
  • Book
    Sephton MA, Smith S, 2002,

    Landforms and cycles

    , London, Publisher: Open University Press, ISBN: 9780749252076
  • Conference paper
    Sephton MA, Veefkind RJ, Looy CV, Visscher H, Brinkhuis H, de Leeuw JWet al., 2002,

    Lateral variations in end-Permian organic matter in northern Italy

    , 3rd Workshop of the European-Science-Foundation IMPACT Programme, Publisher: SPRINGER-VERLAG BERLIN, Pages: 11-24
    • Cite
    • Citations: 10
  • Journal article
    Sephton MA, 2001,

    , Nature, Vol: 414, Pages: 857-858, ISSN: 0028-0836
  • Journal article
    Sephton MA, Gilmour I, 2001,

    , MASS SPECTROMETRY REVIEWS, Vol: 20, Pages: 111-120, ISSN: 0277-7037
    • Cite
    • Citations: 40
  • Journal article
    Sephton MA, Gilmour I, 2001,

    , PLANETARY AND SPACE SCIENCE, Vol: 49, Pages: 465-471, ISSN: 0032-0633
    • Cite
    • Citations: 31
  • Journal article
    Sephton MA, Pillinger CT, Gilmour I, 2001,

    , PRECAMBRIAN RESEARCH, Vol: 106, Pages: 47-58, ISSN: 0301-9268
    • Cite
    • Citations: 56
  • Journal article
    Jones DM, Watson JS, Meredith W, Chen M, Bennett Bet al., 2001,

    , Analytical Chemistry, Vol: 73, Pages: 703-707, ISSN: 0003-2700

    A method is presented for the routine, rapid, and quantitative analysis of aliphatic and naphthenic acids in crude oils, based on their isolation using nonaqueous ion exchange solid-phase extraction cartridges. The isolated acid fractions are methylated and analyzed by gas chromatography and gas chromatography/mass spectrometry. The method is effective on both light and heavy oils and is capable of providing mechanistic information of geochemical significance on the origin of the acids in the oils. Analysis of oils that were solvent extracted from laboratory and field mesocosm marine sediment oil degradation studies indicate that this new method of analyzing the products of hydrocarbon biodegradation may be a useful tool for monitoring the progress of bioremediation of oil spills in the environment.
  • Journal article
    Sephton MA, Pillinger CT, Gilmour I, 2001,

    , PLANETARY AND SPACE SCIENCE, Vol: 49, Pages: 101-106, ISSN: 0032-0633
    • Cite
    • Citations: 19

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