Impact of stocked Rainbow Trout on resident salmonid populations. Phase I, scoping study. R&D Progress Report

[摘要] This account describes the geology of 1:lO 000 Sheet SP 11 NW (Farmington). The area falls largely within 150 000 Geological Sheet 235 (Cirencester), although the northenmost srtip (about lOOm wide) forms part of Sheet 217 (Moreton-in-Marsh). The first geological survey of the area was undertaken by E Hull during the 1850s; it was published as part of Old Series One-Inch Geological Sheet 44 in 1856, and described by Hull (1857). This survey was re-issued with minor amendments as New Series One-Inch Geological Sheets 217 and 235, published in 1929 and 1933, respectively. For the Farmington area, the only change from Hull��s original survey was the addition of alluvium and some outcrops of Chipping Norton Limestone by H G Dines. The geology of sheets 217 and 235 is described in memoirs by Richardson (1929; 1933); these are based on the work of Hull, supplemented by additional data such as quarry sections.

[发布机构] National Rivers Authority