Dahl Researcher ID: G-5473-2012. ORCID ID: 0000-0003-4629-8036

A – Peer reviewed research articles and reviews
B – Comments, brevia and perspectives
C – Editorials
D – Textbook chapters
E – Theses
P – Press releases
† – shared first-authorship


D1. Dahl TW. The origin of O2 on Earth, in: Origins. Editors: D. Harper & O. Seeberg, Dunedin Academic Press. (in press).

A19. Dahl TW, Connelly JN, Kouchinsky A, Gill BC, Månsson SF, Bizzarro M. Reorganization of Earth’s biogeochemical cycles briefly oxygenated the oceans 520 Myr ago (in review).

A18. Dahl, TW and Wirth, SB. Molybdenum isotope fractionation and speciation in a euxinic lake – testing ways to discern isotope fractionation processes in a sulfidic setting (in review)

A17. Kendall, B†and Dahl, TW† and Anbar, A.D. (2017) The Stable Isotope Geochemistry of Molybdenum. Reviews in Mineralogy and Geochemistry 82, 683–732. pdf


A16. Dahl TW, Chappaz A, Hoek J, McKenzie C, Svane S, Canfield DE. Evidence of molybdenum interaction with particulate organic matter under sulfidic conditions. Early View pdf.

A15. Lenton T, Dahl TW, Daines S, Mills B, Ozaki K, Saltzman MR, Porada P. Earliest land plants created modern levels of atmospheric oxygen. Proc Natl Acad Sci 113, 9704–9 (2016) pdf  press (DK)

C1 Dahl TW. Identifying remnants of early Earth. Science, 352(6287): 768-769. pdf

B3. Zhang S, Wang X, Wang H, Bjerrum CJ, Hammarlund EU, Dahl TW and Canfield DE. Reply to Planavsky et al.: [strong evidence for high atmospheric oxygen levels 1400 million years ago. Proceedings of the National Academy of Sciences (Early edition online). pdf


A14. Boyle RA, Dahl TW, Dale A, Shields-Zhou GA, Zhu M, Brasier MD, Canfield DE, Lenton TM Stabilization of the coupled oxygen and phosphorus cycles by the evolution of bioturbation. Nature-Geoscience Published Online (2014)pdf teaser

A13. Dahl TW, Boyle RA, Canfield DE, Connelly JN, Gill BC, Lenton TM, Bizzarro M. Uranium isotopes distinguish two geochemically distinct stages during the later Cambrian SPICE event. Earth and Planetary Science Letters 401, 313-326 (2014). pdf teaser


A12. Overballe-Petersen, Harms, Orlando, Mayar, Rasmussen, Dahl TW, Rosing, Poole, Sicheritz-Ponten, Brunak, Wackernagel, Inselmann, de Vries, Pybus, Nielsen, Johnsen, Nielsen, Willerslev. Bacterial natural transformation by highly fragmented and damaged DNA (2013). pdf

A11. Wirth SB, Gilli A, Niemann H, Dahl TW, Ravasi D, Lehmann MF, Peduzzi R, Peduzzi S, Tonolla M, and Anselmetti FS, Combining sedimentological, trace metal (Mn, Mo) and molecular evidence for reconstructing past water-column redox conditions: The example of meromictic Lake Cadagno (Swiss Alps). Geochimica et Cosmochimica Acta 120: 220–238 (2013). pdf teaser

A10. Dahl TW, Ruhl M, Hammarlund E, Canfield DE, Rosing M, Bjerrum CJ. Tracing euxinia from elevated molybdenum concentrations in sediments using handheld x-ray fluorescence spectroscopy (HH-XRF). Chemical Geology. 360-361: 241–251 (2013). pdf teaser

A9. Balslev-Clausen D, Dahl TW, Saad N, Rosing, MT. Precise and accurate d13C analysis of rock samples using Flash Combustion-Cavity Ring Down Laser Spectroscopy. Journal of Analytical Atomic Spectrometry, 28(4): 516-523 (2013). front cover pdf teaser

A8. Dahl TW, Chappaz A, Fitts JP, Lyons TW, 2013. Molybdenum reduction in a sulfidic lake: Evidence from X-ray absorption fine-structure spectroscopy and implications for the Mo paleoproxy. Geochimica Et Cosmochimica Acta, 103: 213-231. pdf teaser


A7. Hammarlund EU, Dahl TW, Harper, DAT, Bond DPG, Bjerrum CJ, Bengtson S, Schovsbo NH, Schönlaub HP, Zalasiewicz JA, Canfield DE, A Sulfidic Driver for the end-Ordovician (Hirnantian) Deep-Water Extinction. Earth and Planetary Science Letters 331-332, 128-139 (2012). pdf teaser


A6. Dahl TW, Canfield DE., Rosing MT, Frei RE, Gordon GW., Knoll A, Anbar AD, Molybdenum abundance and isotopic evidence for expanded sulfidic water masses in ~750 Ma oceans. pdf supplement 

A5. Dahl TW and Hammarlund E, Do large predatory fish track ocean oxygenation? Communicative and Integrative Biology. 4:1, 1-3 Jan/Feb 2011. pdf


B1. Dahl TW, Hammarlund EH, Anbar AD, Bond DPG, Gill BC, Gordon GW, Knoll AH, Nielsen AT, Canfield DE. Reply to Butterfield: The Devonian radiation of large predatory fish coincided with elevated atmospheric oxygen levels PNAS 107, 17911-17915 (2010). pdf

A4. Dahl TW, Hammarlund EH, Anbar AD, Bond DPG, Gill BC, Gordon GW, Knoll AH, Nielsen AT, Schovsbo NH, Canfield DE. A Devonian rise of atmospheric oxygen correlated to the radiations of terrestrial plants and predatory fish. PNAS 107, 17911-17915 (2010). pdf supplement

A3. Dahl TW and Stevenson DJ. Turbulent Mixing of Metal and Silicate during Planet Accretion – and interpretation of the Hf-W chronometer. Earth and Planetary Science Letters 295 pp. 177-186 (2010) pdf supplement pdf supplement teaser

A2. Dahl TW, Clausen AU, Hansen PB, The human impact on natural rock reserves using basalt, anorthosite, and carbonates as raw materials in insulation products, International Geology Review 53, 894–904 (2011). pdf

A1. Dahl TW, Anbar A, Gordon G, Rosing M, Frei R, Canfield DE, 2010. The behavior of molybdenum and its isotopes across the chemocline and in the sediments of sulfidic Lake Cadagno, Switzerland. Geochimica Et Cosmochimica Acta 74., 144-163. pdf supplement

Theses and Study projects

2016 Lohse-Sørensen A, Alunskifer Havets bundmiljø og liv BSc thesis (Danish)
2008 Dahl TW, PhD thesis about Molybdenum isotope fractionation.
2005  Dahl TW, Master’s thesis about core formation and the age of the Moon.
2003 Dahl TW, SURF thesis about aspects of turbulent mixing in planets.
2003 Dahl TW, Magnetisme på Mars, bachelor’s thesis (Danish)

Teaching material

2012 Dahl T. W., Kock B., + scientific playground team PlanetCards for Apple iPhone/iPod.
2011 Dahl, T.W., Leer K., Pagh M. Planetkort 2nd ed. Forlaget Meloni. ISBN 978-87-92505-57-6
2008 Jensen F., Dahl, T.W., Leer K., Pagh M. Planetkort lærervejledning. Geografforlaget
2007 Dahl, T.W., Leer K.L., Pagh M. Planetkort. Geografforlaget ISBN: 978-87-7702-522-8