The Geological Survey Act 1845 (c.63) The Geological Survey Act 1845 (c.63) Changes not yet applied. Later legislation changes this provision in ways not yet written into the text below: Sch. 10 para. 40 repealed by Greater London Authority Act 1999 Sch. 34 Pt. 1 7Paragraph 7 The Geological Survey Act 1845 (c.63)