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Journal articleSephton MA, Amor K, Franchi IA, et al., 2002,
Carbon and nitrogen isotope disturbances and an end-Norian (Late Triassic) extinction event
, GEOLOGY, Vol: 30, Pages: 1119-1122, ISSN: 0091-7613- Author Web Link
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- Citations: 69
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Journal articleWatson JS, Jones DM, Swannell RPJ, et al., 2002,
Formation of carboxylic acids during aerobic biodegradation of crude oil and evidence of microbial oxidation of hopanes
, Organic Geochemistry, Vol: 33, Pages: 1153-1169, ISSN: 0146-6380 -
Journal articleVerchovsky AB, Sephton MA, Wright IP, et al., 2002,
Separation of planetary noble gas carrier from bulk carbon in enstatite chondrites during stepped combustion
, EARTH AND PLANETARY SCIENCE LETTERS, Vol: 199, Pages: 243-255, ISSN: 0012-821X- Author Web Link
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- Citations: 51
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Journal articleSephton MA, Wright IP, Gilmour I, et al., 2002,
High molecular weight organic matter in martian meteorites
, PLANETARY AND SPACE SCIENCE, Vol: 50, Pages: 711-716, ISSN: 0032-0633- Author Web Link
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- Citations: 61
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Journal articleSephton MA, 2002,
Organic compounds in carbonaceous meteorites
, NATURAL PRODUCT REPORTS, Vol: 19, Pages: 292-311, ISSN: 0265-0568- Author Web Link
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- Citations: 520
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Conference paperSephton MA, Veefkind RJ, Looy CV, et 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- Author Web Link
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- Citations: 9
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Conference paperSephton MA, Looy CV, Veefkind RJ, et 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: 455-462In 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.
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BookSephton MA, Smith S, 2002,
Landforms and cycles
, London, Publisher: Open University Press, ISBN: 9780749252076 -
Journal articleSephton MA, 2001,
Life's sweet beginnings?
, Nature, Vol: 414, Pages: 857-858, ISSN: 0028-0836 -
Journal articleSephton MA, Gilmour I, 2001,
Compound-specific isotope analysis of the organic constituents in carbonaceous chondrites
, MASS SPECTROMETRY REVIEWS, Vol: 20, Pages: 111-120, ISSN: 0277-7037- Author Web Link
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- Citations: 36
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Journal articleSephton MA, Gilmour I, 2001,
Pyrolysis-gas chromatography-isotope ratio mass spectrometry of macromolecular material in meteorites
, PLANETARY AND SPACE SCIENCE, Vol: 49, Pages: 465-471, ISSN: 0032-0633- Author Web Link
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- Citations: 31
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Journal articleJones DM, Watson JS, Meredith W, et al., 2001,
Determination of naphthenic acids in crude oils using nonaqueous ion exchange solid-phase
, Analytical Chemistry, Vol: 73, Pages: 703-707, ISSN: 0003-2700A 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.
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Journal articleSephton MA, Pillinger CT, Gilmour I, 2001,
Normal alkanes in meteorites:: molecular δ<SUP>13</SUP>C values indicate an origin by terrestrial contamination
, PRECAMBRIAN RESEARCH, Vol: 106, Pages: 47-58, ISSN: 0301-9268- Author Web Link
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- Citations: 49
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Journal articleSephton MA, Pillinger CT, Gilmour I, 2001,
Supercritical fluid extraction of the non-polar organic compounds in meteorites
, PLANETARY AND SPACE SCIENCE, Vol: 49, Pages: 101-106, ISSN: 0032-0633- Author Web Link
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- Citations: 17
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Journal articleSephton MA, Gilmour I, 2000,
Aromatic moieties in meteorites: Relics of interstellar grain processes?
, ASTROPHYSICAL JOURNAL, Vol: 540, Pages: 588-591, ISSN: 0004-637X- Author Web Link
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- Citations: 38
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Journal articleSephton MA, Pillinger CT, Gilmour I, 2000,
Aromatic moieties in meteoritic macromolecular materials:: Analyses by hydrous pyrolysis and δ<SUP>13</SUP>C of individual compounds
, GEOCHIMICA ET COSMOCHIMICA ACTA, Vol: 64, Pages: 321-328, ISSN: 0016-7037- Author Web Link
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- Citations: 103
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Conference paperSephton M, Gilmour I, 2000,
Macromolecular organic materials in carbonaceous chondrites: A review of their sources and their role in the origin of life on the early Earth
, 1st Workshop of the European-Science-Foundation Scientific Program, Publisher: SPRINGER-VERLAG BERLIN, Pages: 27-49, ISSN: 0930-0317- Author Web Link
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- Citations: 9
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Conference paperSephton MA, Pillinger CT, Gilmour I, 2000,
Supercritical fluid extraction of the organic compounds in the Cold Bokkeveld meteorite
, Lorraine, 7th Meeting on Supercritical Fluids: Particle Design - Materials and Natural Products Processing, Antibes, France, December 6-8, Publisher: International Society for the Advancement of Supercritical Fluids, Pages: 839-844 -
Journal articleSephton MA, Pillinger CT, Gilmour I, 1999,
Small-scale hydrous pyrolysis of macromolecular material in meteorites
, PLANETARY AND SPACE SCIENCE, Vol: 47, Pages: 181-187, ISSN: 0032-0633- Author Web Link
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- Citations: 58
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Book chapterWatson JS, Jones DM, Swannell RPJ, 1999,
Formation of carboxylic acids during biodegradation of crude oil
, In situ bioremediation of petroleum hydrocarbon and other organic compounds, Editors: Alleman, Leeson, Publisher: Battelle Pr, Pages: 251-255, ISBN: 9781574770766
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