WebThe Grantham Formation is a geological formation in England, which dates to the Middle Jurassic Aalenian age around 172 million years ago. It is composed of mudstones and sandstone, usually with abundant plant debris.It overlies the preceding Northampton Sand Formation and underlies the following Lincolnshire Limestone.. It is found from the River … WebGrantham Formation, Northampton Sand Formation or Lias Group: Thickness: 0-30 m: Lithology; Primary: Limestone: Other: Sandy limestone, mudstone: ... in that it tends to contain more than usual amounts of sand. A stone from this part of the formation which was commercially exploited is the Collyweston stone slate which was used for ...
Lincolnshire Limestone Formation - Wikipedia
The Northampton Sand Formation, sometimes called the Northamptonshire Sand, is a Middle Jurassic geological formation which is placed within the Inferior Oolite Group. It was formerly worked extensively in Northamptonshire for its ironstone. The Northampton Sand Formation constitutes the lowest part of the … Ver mais There is a description of the twentieth century exploitation of the Northampton Sand for iron-smelting in the Wellingborough article. Ver mais • List of dinosaur-bearing rock formations Ver mais • Kent, P. & Gaunt, G.D. British Regional Geology Eastern England to The Wash (1980) ISBN 0-11-884121-1 • Hains, B.A. & Horton, A. British … Ver mais WebIn 1963 the quarry closed but not before exposing one of the most complete sections of the Middle Jurassic Lincolnshire Limestone Formation, together with the underlying Grantham and Northampton Sand Formations. It is now a … how many gallons does a tundra hold
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Web1 de out. de 2013 · The Lower Jurassic Marlstone Rock Formation was formerly worked for ironstone near Denton (SE Lincolnshire), and the Middle Jurassic Northampton Sand Formation near Hungerton and Colsterworth (SE ... WebSandy, ironstone, greenish grey where fresh, weathering to brown sandstone typically with a box stone structure. The common iron minerals in the fresh specimen are berthierine, … WebIn south-west Northamptonshire and north Oxfordshire, the lower part is replaced by the Horsehay Sand, Chipping Norton Limestone, Sharp’s Hill, and Taynton Limestone … how many gallons does a tanker truck hold