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Professor Geoffrey Clayton

Fellow Emeritus (Geology)

  BIOSTRATIGRAPHY   Earth Sciences   Geology   Hydrocarbons, exploration and production   PALAEOTEMPERATURE   PALEOBIOLOGY   PALEOGEOGRAPHY   Paleontology   PALYNOLOGY   Palynostratigraphy, Devonian and Carboniferous   Stratigraphy
 Nitrogen isotopes as indicators of climate change
 Palynological correlation of Mississippian (Carboniferous) stage boundaries in Western Europe and the USA
 Stratigraphic Palynology of the Palaeozoic of Saudi Arabia

Details Date
Vice-Chair, Subcommission for Carboniferous Stratigraphy 2000 -2008
Councillor, International Federation of Palynological Societies 1996 - 1999
President, Commission Internationale de Microflore du Paleozoique 1991 - 1999
Secretary-General, Commission Internationale de Microflore du Paleozoique 1983 - 1987
Details Date From Date To
American Association of Stratigraphic Palynologists 1973
Commisssion Internationale de Microflore du Paleozoique 1968
Lopes, G. and McLean, D. and Mangerud, G. and Clayton, G., A new Mississippian biozonal scheme for the Finnmark Platform, Norway â€" Palynostratigraphic integration of exploration wells 7128/4-1 and 7128/6-1, Marine and Petroleum Geology, 92, 2018, p94-108 , Notes: [cited By 0], Journal Article, PUBLISHED  DOI
Spina, A. and Vecoli, M. and Riboulleau, A. and Clayton, G. and Cirilli, S. and Di Michele, A. and Marcogiuseppe, A. and Rettori, R. and Sassi, P. and Servais, T. and Riquier, L., Application of Palynomorph Darkness Index (PDI) to assess the thermal maturity of palynomorphs: A case study from North Africa, International Journal of Coal Geology, 188, 2018, p64-78 , Notes: [cited By 0], Journal Article, PUBLISHED  DOI
Lopes, G. and Mangerud, G. and Clayton, G., The palynostratigraphy of the Mississippian Birger Johnsonfjellet section, Spitsbergen, Svalbard, Palynology, 2018, Notes: [cited By 0], Journal Article, PUBLISHED  DOI
Clayton, G. and Goodhue, R. and Abdelbagi, S.T. and Vecoli, M., Correlation of Palynomorph Darkness Index and vitrinite reflectance in a submature Carboniferous well section in northern Saudi Arabia, Revue de Micropaleontologie, 60, (3), 2017, p411-416 , Notes: [cited By 0], Journal Article, PUBLISHED  DOI
CLARK, N.D.L., GILLESPIE, R., MORRIS, S.F., CLAYTON, G., A new early Carboniferous crustacean from the Forest of Dean, England, Journal of Systematic Palaeontology, 14, (9), 2016, p799-807 -, Journal Article, PUBLISHED  DOI
ROONEY, A., GOODHUE, R., CLAYTON, G., Stable nitrogen isotope analysis of the Upper Devonian palynomorph, Tasmanites, Palaeogeography, Palaeoclimatology, Palaeoecology, 429, 2015, p13 - 21, Notes: [ ], Journal Article, PUBLISHED  DOI
NAYLOR, D., AL-RAWI, M., CLAYTON, G., FITZPATRICK, M.J. and GREEN, P. F. , Hydrocarbon potential in Jordan, Journal of Petroleum Geology, 36, 2013, p205 - 236, Journal Article, PUBLISHED  DOI
FERNANDES, P., RODRIGUES, B., BORGES, M., MATOS, V. and CLAYTON, G. , Organic maturation of the Algarve Basin (southern Portugal) and its bearing on thermal history and hydrocarbon exploration, Marine and Petroleum Geology, 46, 2013, p210 - 233, Journal Article, PUBLISHED  DOI
ROONEY, A., CLAYTON, G. and GOODHUE, R., The dispersed spore Retusotriletes loboziakii sp. nov., affiliated with the enigmatic Late Devonian alga Protosalvinia Dawson 1884, Palynology, 37, (2), 2013, p196 - 201, Journal Article, PUBLISHED  DOI
FERNANDES, P., MUSGRAVE, J.A., CLAYTON, G., PEREIRA, Z., OLIVEIRA, J.-T., GOODHUE, R. and RODRIGUES, B., New evidence concerning the thermal history of Devonian and Carboniferous rocks in the South Portuguese Zone, Journal of the Geological Society, 169, 2012, p647 - 654, Journal Article, PUBLISHED  DOI

Page 1 of 4
Lopes, G., Mangerud, G., Clayton, G., Mørk, A., New insights on East Finnmark Platform palynostratigraphy and paleogeography - A study of three shallow cores from a Mississippian succession in the Barents Sea, Norway, Palaeogeography, Palaeoclimatology, Palaeoecology, 450, 2016, p60-76 , Journal Article, PUBLISHED


Award Date
Visiting Professor of Palynology, University of Sheffield 2014-2019
Senior Fellow, Trinity College Dublin 2012-2013
Berkeley Research Fellow, Trinity College Dublin 2002
Member of Royal Irish Academy 2000
Fellow, Trinity College Dublin 1981
My main research interests are: 1) PALYNOLOGY - the use of palynomorphs in Palaeozoic rocks to determine their age, depositional environment and palaeogeographic setting. 2) ORGANIC PETROLOGY - interpretation of thermal histories of rocks based on studies of microscopic plant debris and other organic particles. Current areas of interest include Ireland, Bolivia, Portugal, Jordan, Saudi Arabia and the USA.