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English Early Jurassic geological formation with ironstone From Wikipedia, the free encyclopedia
The Marlstone Rock Formation is a geological formation in England. It dates to the Early Jurassic, it consists of "Sandy, shell-fragmental and ooidal ferruginous limestone interbedded with ferruginous calcareous sandstone, and generally subordinate ferruginous mudstone beds", with ironstone.[1]
Marlstone Rock Formation | |
---|---|
Stratigraphic range: | |
Type | Geological formation |
Unit of | Lias Group |
Underlies | Whitby Mudstone Formation |
Overlies | Dyrham Formation, Charmouth Mudstone Formation (East Midlands Shelf northwards) |
Thickness | 10 metres (33 ft) |
Lithology | |
Primary | Limestone, sandstone |
Other | Mudstone, Ironstone |
Location | |
Country | United Kingdom |
Extent | East Midlands Shelf and Worcester Basin (Mendips to Market Weighton). |
Type section | |
Location | Jeffries Brickworks, near Stonehouse |
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