The county of Cleveland was created in 1974 and comprises the Teesside area which was formerly part of County Durham (north of the Tees) and Yorkshire (south of the Tees). It consists of the lowlands surrounding the lower reaches and estuary of the River Tees, and the slopes rising to the Cleveland Hills south of the river. To the north the basic rock is sandstone, with marls and conglomerates, and to the south the hills are Jurassic limestone. The latter was used in the villages and small town buildings of the south, but the main conurbation post-dates the industrial revolution to a large extent and has no characteristic building style.
KeywordsClay Migration Depression Petroleum Steam
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