| 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 |
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]
References
[edit]- ^ "Marlstone Rock Formation". The BGS Lexicon of Named Rock Units. British Geological Survey.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction