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    Academic Journals

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• Performance of temperature and productivity proxies based on long-chain alkane-1, mid-chain diols at test: a 5-year sediment trap record from the Mauritanian upwelling.

  Authors:Gerard J. M. Versteegh, Karin A. F. Zonneveld, Jens Hefter, Oscar E. Romero, Gerhard Fischer, and Gesine MollenhauerFrom:Biogeosciences (Vol. 19, Issue 5) Peer-Reviewed

  Mar. 18, 2022500 words Article Proxies based on long-chain alkane-1, mid-chain diols (diol for short) are obtaining increasing interest to reconstruct past upper ocean temperature and productivity. Here we evaluate performance of the sea surface...

• Geochemical consequences of oxygen diffusion from the oceanic crust into overlying sediments and its significance for biogeochemical cycles based on sediments of the northeast Pacific.

  Authors:Gerard J. M. Versteegh, Andrea Koschinsky, Thomas Kuhn, Inken Preuss, and Sabine KastenFrom:Biogeosciences (Vol. 18, Issue 17) Peer-Reviewed

  Sept. 13, 2021455 words Article Exchange of dissolved substances at the sediment-water interface provides an important link between the short-term and long-term geochemical cycles in the ocean. A second, as yet poorly understood sediment-water exchange...

• Better molecular preservation of organic matter in an oxic than in a sulfidic depositional environment: evidence from Thalassiphora pelagica (Dinoflagellata, Eocene) cysts.

  Authors:Gerard J. M. Versteegh, Alexander J. P. Houben, and Karin A. F. ZonneveldFrom:Biogeosciences (Vol. 17, Issue 13) Peer-Reviewed

  July 9, 2020420 words Article Anoxic sediments, as compared to oxic settings, encompass a much higher proportion of relatively labile and thus more reactive organic matter, naturally giving rise to structural changes of the organic molecules...

• The 2.1 Ga Old Francevillian Biota: Biogenicity, Taphonomy and Biodiversity

  Authors:Abderrazak El Albani, Stefan Bengtson, Donald E. Canfield, Armelle Riboulleau, Claire Rollion Bard, Roberto Macchiarelli, et al.From:PLoS ONE (Vol. 9, Issue 6) Peer-Reviewed

  June 25, 201410,474 words Article 1470LThe Paleoproterozoic Era witnessed crucial steps in the evolution of Earth's surface environments following the first appreciable rise of free atmospheric oxygen concentrations ~2.3 to 2.1 Ga ago, and concomitant...

• Use of selective degradation to separate preservation from productivity

  Authors:Gerard J.M. Versteegh and Karin A.F. ZonneveldFrom:Geology (Vol. 30, Issue 7) Peer-Reviewed

  July 200296 words Abstract

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• Transport of organic-walled dinoflagellate cysts in nepheloid layers off Cape Blanc (N-W Africa)

  Authors:Karin A.F. Zonneveld, Friederike Ebersbach, Mara Maeke, and Gerard J.M. VersteeghFrom:Deep-Sea Research. Part I, Oceanographic Research Papers (Vol. 139) Peer-Reviewed

  Sept. 2018531 words Report

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