Department of Earth Sciences
University College London
London WC1E 6BT
Tel. 00 44 (0)20-7679-1325
Tel. 00 44 (0)20-8977-1719
B.Sc. Hons Geology (University of
D.Phil. Physical Sciences (University of Oxford, 1979)
P.G.C.E. (Physics & Chemistry (University of Exeter, 1981)
2000- UCL (University
College London) - Professor of Sedimentology & Stratigraphy
1994-2000UCL (University College London) - Reader in Sedimentology & Stratigraphy
1985-1993 University of Leicester - University Lecturer, Department of Geology
1993-1994 Reader in Sedimentology
1981-1985 University of London, Goldsmiths' College - Research Demonstrator, Department of Geology
1983- Fellow of
The Geological Society of London.
1976- Member, International Association of Sedimentologists.
1976- Member, Society of Economic Paleontologists & Mineralogists.
1987-90 Elected Member of Council of The Geological Society, London.
1989-92 Editorial Board of the Journal of the Geological Society, London.
1992- Advisory Editor of international journal The Island Arc Blackwell Scientific, Australia.
1996- Member, Geological Society of America.
1997- Member, Petroleum Exploration Society of Great Britain.
My principal active research interests are in various aspects of Earth surface processes/marine sedimentology. In particular, I work mainly on many aspects of deep-marine clastic sedimentology process, sediments and environments. My research history can be summarised as follows:
Late Precambrian passive margin deep-water systems, Finnmark, Arctic Norway, and Arctic Russia.
Late Jurassic (Kimmeridge-Volgian) sedimentation, sedimentary geochemistry, and tectonics in NE Scotland and the northern North Sea.
Pleistocene sedimentation and sedimentary geochemistry, Mississippi Fan, Gulf of Mexico (DSDP Leg 96, Shipboard scientist, 1983).
Lower Palaeozoic sedimentation and tectonics of the circum-Atlantic region, particularly the Ordovician-Silurian of central Newfoundland and the Quebec Appalachians.
Tertiary continental molasse sedimentation and tectonics, Ladakh Himalaya, India.
Neogene sedimentation, sedimentary geochemistry and tectonics of the Nankai accretionary prism (Shipboard scientist, ODP Leg 131, 1990), offshore Japan.
Lower-Middle Jurassic shallow-marine Bridport Sands, southern England.
Neogene sedimentation and tectonics of southeast Japan.
Lower Palaeozoic geology, Alai Range, southern Tien Shan, Kyrghyzstan and Uzbekistan, SE Central Asia.
Geochemistry (majors, traces and REE) and clay mineralogy of mudrocks.
Sediment flux. Nature, magnitude and frequency of sediment delivery to deep sea. Dissembling the sedimentary signals in marine sediments.
Subduction Inputs. IODP Expedition 322 (NanTroSEIZE) shipboard scientist and Lead Sedimentologist.
Back to top
Future and current research can be summarised as follows:
DEEP-WATER SEDIMENTARY PROCESSES AND ENVIRONMENTS
This research is essentially field-based in ancient deep-marine sedimentary records, e.g. current active research programmes in the Paleogene of SE France (Grès d'Annot turbidite system), the Paleogene of the north-central Pyrenees (Ainsa Drilling Project), and the Neogene of SE Spain (Tabernas and Sorbas basins). An aim of this research is to understand the controls on particular stratal packages (architectural element analysis). A quantitative approach to architectural elements is currently being developed which will permit an objective comparison between systems at a variety of scales: the scheme will also provide statistical data on elements which can be used in object-based stochastic modelling of deep-water systems.
SEDIMENTARY SIGNALS in active-margin basins
This research is in collaboration with many workers, notably Prof. Asahiko Taira (Ocean Research Institute, University of Tokyo, Japan) and Dr. Wonn Soh (University of Kyushu, Fukuoka, Japan), and colleagues at UCL Department of Geological Sciences (Drs Jürgen Thurow and Ellen PLatzman). The aim of this research, in the Plio-Pleistocene Kazusa Group forearc-basin stratigraphy of Boso Peninsula, SE Japan, is to recognise and quantify the contribution of each sedimentary signal to the overall stratigraphic evolution of a clastic forearc basin. This approach requires continuous stratigraphic sections, ideally those which can be placed within an astronomically-tuned time-scale - as is the case for the Kazusa Group, SE Japan. The sedimentary signals obtained in this study will represent the product of a number of distinct processes. These include:
Irrespective of the sedimentary response to any driving mechanism (above), it has been proposed that deep-water turbidite bed thickness distributions, in the absence of significant bed amalgamation and erosion, ideally obey a power law distribution. An aspect of this research is to test the hypothesis of a power-law distribution using the long and continuous records of the turbiditic sedimentary layers throughout the Kazusa Group. We will also endeavour to account for any distribution/cyclicity in terms of a causal process by using geochemical, petrographic and faunal-floral data to finger-print the sediment provenance (e.g. direct fluvial input, shelf-spillover during storms, seismically-induced slope failure).
Back to top
PublicationsStudentsThe Ainsa Project