Calderdale Geoscience
Calderdale Geoscience
Calderdale Geoscience Ltd

Since 2004, members of Calderdale Geoscience Limited (CGL1) have provided clients with in-house technical expertise in the evaluation of blocks offered in licensing rounds around the world , resulting in numerous license awards and successful wells. Recently, CGL has worked on a successful UK 29th and 30th Round applications; UK, Norway and Netherlands North Sea digital core and geopressure databases; and the vectorisation of all well and seismic data from the Cauvery Basin, Sri Lanka.

The current members of CGL are:

Dr David Melnyk

Director: David Melnyk PhD


Dr Jo Prigmore

Director: Jo Prigmore MA PhD


Mark Holliday

Director: Mark Holliday BSc


Mike Dempsey

Associate: Mike Dempsey MSc


A J (Tissa) Jayasekera OBE

Associate: A J (Tissa) Jayasekera OBE


Leonid (Len) Tiahlo

Associate: Leonid (Len) Tiahlo


Peter Stanley BSc

Associate: Peter Stanley BSc


Paul Emerson MSc

Associate: Paul Emerson MSc


Dr Chris Johns

Associate: Chris Johns PhD


Guy Markham

Associate: Guy Markham MSc


Roman Bobolecki

Associate: Roman Bobolecki MSc



While every effort will be made to prepare accurate data bases and maps, it should be recognized that the geological data available will always be incomplete and that any interpretations made or advice offered will be predictive, not certain. The directors of Calderdale Geoscience Limited cannot accept responsibility or liability for commitments undertaken by clients or for subsequent exploration results.

  • 1 CGL is privately owned by the directors and by Equipoise Solutions Ltd.

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    Last updated: 28th June, 2017
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