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Thermal modelling of the Cheshire Basin using BasinModTM

Vincent, C.J.; Merriman, R.J.. 2004 Thermal modelling of the Cheshire Basin using BasinModTM. Nottingham, UK, British Geological Survey, 23pp. (IR/03/092) (Unpublished)

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Abstract/Summary

The Cheshire Basin is a half-graben formed as one of a series of sedimentary basins during Permo-Triassic rifting. The Permo-Triassic infill of this basin may have been up to four or five kilometres thick prior to geologically recent erosion. The basin is flanked to the East and West by Carboniferous and older rocks. The succession in this region displays widespread uplift and erosion resulting from northward encroachment of the Variscan Front at the end of the Carboniferous. This report details the development of 1-D thermal models and integration to a 2-D model of the Cheshire Basin. BasinModTM (Platte River Software) has been used to model compaction and temperature through burial over geological time using a variety of datasets. The report considers the Cheshire Basin area through the Carboniferous to the present day, concentrating on the late Carboniferous Coal Measures where maturity data are available. Heat flow in this region was assumed to be generally high during the latest Carboniferous to early Permian. Modelled isotherms and maturity plots imply that the greatest temperatures attained in the productive Coal Measures occurred during Permian to Cretaceous burial in the basin centre, and during late Carboniferous to Permian time outside of the basin. The 1-D models imply that some Carboniferous Coal Measures reached the oil generation window. Minor oil stains and shows were found in some Cheshire Basin boreholes. However there does not appear to be a suitable trap to create a commercially viable reservoir. The BasinMod model results and this best practice report with accompanying checklist and guidelines are stored electronically for the DGSM.

Item Type: Publication - Report
Programmes: BGS Programmes > Digital Geoscience Spatial Model
Funders/Sponsors: British Geological Survey
Additional Information. Not used in RCUK Gateway to Research.: This item has been internally reviewed, but not externally peer-reviewed.
Date made live: 07 May 2020 15:52 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/527618

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