Geology of the Swadlincote and Church Gresley district, 1:10000 sheets SK31NW and SK21NE : part of 1:50000 sheets 141 (Loughborough), 155 (Coalville), 154 (Lichfield) & 140 (Burton)

This report describes the geology of 1:lO 000 sheets SK31NW (Swadlincote) and SK21NE (Church Gresley). The combined area (hereafter referred to as the 'district') falls mainly within the 1:50 000 Geological Sheet 141 (Loughborough), and partly within Geological Sheets 155 (Coalville), 154 (Lichfield) and 140 (Burton). The district was first geologically surveyed at 1:lO 560-scale by E Hull between 1850 and 1860, and published as part of the Old Series One-inch geological sheets 62E and 63W. The primary survey of the district was carried out by C Fox-Strangways in 1892-1896 and published on the Derbyshire (DY) sixinch County Series Sheets DY59, 60, 61, 62, 63 and Leicestershire (L) Sheets L15 and 22 (detailed sheet compilations are given on the accompanying 1:lO 000 maps). The One-inch to one-mile New Series Geological Sheet 141 (Loughborough) was published in 1904; an accompanying memoir was also produced (Fox-Strangways, 1905). Following amendments to the Coal Measures by G H Mitchell, shown on separate copies of the six-inch County Series Sheets, a revised one-inch sheet was published in 1950. Sheet SK31NW was resurveyed south of gridline 3181 at 1:lO 560-scale by B C Worssam in 1967-70. The same worker carried out a more extensive re-survey of Sheet SK21NE, to the south of gridline 3165 and west of gridline 3270. The mapping was completed at 1:lO 000-scale by J N Carney in 1995, under the direction of T J Charsley (Regional Geologist). This later mapping constitutes part of the Loughborough Geological Mapping Project.