(Folkestone Gualt) - 2003
The Gault consists of dark bluish grey to pale grey soft mudstones and silty mudstones which weather to yellow and brown clays. The basic few feet of the formation are commonly silty or sandy, and at other levels the clays are generally either glauconitic or calcareous. Phosphatic nodule beds occur at several horizons, notably in the middle of the formation.
The Gault contains a rich marine fauna in which molluscs predominate. The formation is divided into four ammonite zones; the zones of and, making up the lower Gault, correspond to the Stage, and the zones of and correspond to the. Other cehalopods which are usually present include other ammonites and other fossils. Locally the thickness of the formation varies considerably, but there is a general westwards thickening across the outcrop.
Lower Chalk - 2003
Lower Greensand - 2003
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Late |
Maastrichtian |
65.0 to 71.0 |
| Campanian |
71.0 to 83.0 |
| Santonian |
83.0 to 86.0 |
| Contacian |
86.0 to 89.0 |
| Turonian |
89.0 to 93.0 |
| Cenomanian |
93.0 to 98.9 |
Early |
Albian |
98.9 to 111 |
| Aptian |
111 to 121 |
| Barremian |
121 to 127 |
| Hauterivian |
127 to 132 |
| Valanginian |
132 to 137 |
| Ryazanian
|
137 to 142 |
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1:250 000 Geological Map of Folkestone
Geological Maps are sold either Flat or Folded for Solid, or Seabed geology. Special editions may be available for certain locations. For a complete list click the link below.
Click here to BUY ONLINE from our Store |
|
1: 50 000 Geological Map of Folkestone
Geological Maps are sold either Flat or Folded for Solid, Drift or combined geology. Special editions may be available for certain locations. For a complete list of
1: 50 000 maps, click the link below.
Click here to BUY ONLINE from our Store |
