School of Earth and Environmental Sciences


Photo of Holly Turner

Holly Turner

  • Role Title: PhD Researcher
  • Address: Burnaby Building, Burnaby Road, Portsmouth, PO1 3QL
  • Telephone: 023 9284 2418
  • Email:
  • Department: School of Earth and Environmental Sciences
  • Faculty: Science


My interests are focused on the use of isotopic proxies and the application of microfossils in biostratigraphy and palaeoclimatology/environmental analysis. Currently, I am researching the interregional correlation of the Kimmeridge Clay Formation in north-west Europe.


  • 2014-Present: Ph.D. Researcher, UoP
  • 2010-2013: BSc(Hons) Palaeobiology and Evolution, UoP


  • Norwegian Offshore Stratigraphic Lexicon (NORLEX) Research Bursary (2014-2017)
  • Lundin Petroleum Research and Travel Grant


  • Fellow of The Geological Society, London
  • Member of The Micropalaeontological Society
  • Member of The Palaeontological Association
  • STEMNet Ambassador


Ph.D. - Integrated stratigraphy and correlation of the Kimmeridge Clay Formation (bio-, cyclo- and chemostratigraphy) in north-west Europe: a Tethyan-Boreal transect.

Supervisors: Professors Andy Gale (UoP) and Felix Gradstein (NHM Oslo & Unisinos).

The Upper Jurassic Kimmeridge Clay is a major source rock in north-west Europe, and its genesis, stratigraphy and correlation are critical to understanding its petroleum potential. Many studies, including bio-, cyclo-, and chemo- stratigraphy, have been produced on the type area in Dorset, but further comparison with its counterparts in north-west Europe is necessary to gain a Tethyan-Boreal correlation of the formation. The aims of this project are as follows:

  • To produce a detailed study of the interregional stratigraphy of the Kimmeridgian–Ryazanian Kimmeridge Clay offshore marine facies across a Boreal-Tethyan transect, building on the current chemostratigraphical and orbital framework for NW Europe.
  • Potentially refine the chronostratigraphy for the interval studied.
  • Ultimately to better understand why the Kimmeridge clay facies, its widespread deposition and prolific source rock potential, is so exceptional.

Sections studied are from the type section in Dorset, cores from wells operated by Lundin Petroleum in the North, Norwegian, and Western Barents Sea, and possible localities from Southern France/Germany. Carbon isotope curves for each location will be produced and compared to show any correlation in isotope excursions. This correlation will be supported by existing dinoflagellate biostratigraphy, and my own nannofossil biostratigraphy of the sample sets.