Lincolnshire reaching between 4.7 and 5.3 on the Richter magnitude scale; it was one of the largest earthquakes to affect Britain in recent years. Lincolnshire is home to Woolsthorpe Manor, birthplace and home of Sir Isaac Newton. He attended The King's School, Grantham. Its library has preserved his signature, carved into a window sill when he was a youth. Bedrock in Lincolnshire features Jurassic limestone (near Lincoln) and Cretaceous chalk (north-east). For much of prehistory, Lincolnshire was under tropical seas, and most fossils found in the county are marine invertebrates. Marine vertebrates have also been found including ichthyosaurus and plesiosaur .
Isaac Newton Telescope by Grubb Parsons after the move. INT locations are Herstmonceux Castle (1967–79) then ORM (1984–). The INT was inaugurated by Queen Elizabeth II in 1967. Largest optical telescopes 1967: INT began its new life atop the Canary Island of La Palma, a Spanish mountain island, in 1984, with a new mirror and dome. Large visible-light optical ground telescopes in 1984: Isaac Newton Telescope The Isaac Newton Telescope or INT is a 2.54 m (100 in.) optical telescope run by the Isaac Newton Group of Telescopes at Roque de los Muchachos Observatory on La Palma in the Canary Islands since 1984.