Title: An integrated study of the Hatton Basin :its role in regional North Atlantic petroleum systems
Researchers: Laura Berdi, Dr Brian O'Reilly
The Hatton Basin is located western offshore Ireland, east of the heavily intruded Hatton Continental Margin and the Icelandic Basin and west of the highly stretched crust of the Rockall and Porcupine Basins. The basin itself is lightly studied, little is known about its geology and economic resource potential. DSDP borehole data, shallow borehole data and seabed samples are available on the northern side of the basin, however, there is no well control on the southern side of the basin. Moreover, no deep exploration wells have been drilled in the area and there is little published information on the seismic stratigraphy of the basin. The geology and crustal structure of the basin is better covered by seismic refraction and reflection data such as the HADES and RAPIDS profiles and the recently acquired ENI/PAD 2D survey.
The relationship of the basin to the conjugate Greenland and Canadian margin, its role in regional paleogeography and sedimentary depositional systems has not been deeply studied. This has implications for the potential petroleum systems in the basin and in the surrounding areas, on the timing of clastic sediment routes and on the thermal and tectonic evolution of the region.
This project focuses on constraining the tectonic and thermal evolution of the Hatton Basin to understand its role in the formation of the North Atlantic passive margins. The datasets used for this study will include crustal-scale tomographic models developed by the Dublin Institue for Advanced Studies (DIAS) and other research institutes as well as long streamer seismic reflection profiles, potential field data and additional geological information including limited well and borehole data. These data will be integrated to better understand the large-scale sedimentary architecture and crustal structure of the Hatton Basin and its environs by means of seismic stratigraphic interpretation, basin analysis and gravity/magnetic field modelling. The results are expected to provide new insights into deep crustal and lithospheric processes that impact on the regional distribution of sediment sources and transport pathways in the North Atlantic region. Furthermore, the existence of the elements of a potential petroleum system will be investigated to assess the hydrocarbon prospectivity of the area.