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1:250 000 Geological Map
This range of geological maps show the general geology of the area, they come in either folded (for taking on the field), or flat (for wall mounting)
Buy from UKGE |
|
1: 50 000 Geological Map
This range of geological maps show the localised geology, they come in either folded (for taking on the field), or flat (for wall mounting)
Buy from UKGE |
Cretaceous
GEOGRAPHY AND CLIMATE: Seas flood half the land, Great thickness of
chalk, single-celled animals laid down. Land masses
begin to move towards their present positions. Climate mild without
extremes.
TERRESTRIAL ANIMAL LIFE: Advanced dinosaurs such as duck-bills. Turtles,
snakes,salamanders. Gulls and wading birds. Opossums & other mammals.
All dinosaurs and many other large reptiles extinct by the end of
the period.
PLANT LIFE: Gymnosperms, sequoias and cypresses. Flowering plants appear,
magnolias and oaks.
SEA LIFE: Plankton, coral reefs, rudists, ammonites, calcareous algae.
Marine reptiles and ammonites extinct by the end of the period. |
Pleistocene
GEOGRAPHY AND CLIMATE: Ice ages cover Northern lands, sea level falls
TERRESTRIAL ANIMAL LIFE: Woolly mammoths and rhinos, saber toothed cats.
cave lions. Giant marsupials in Australia. Human hunting skills
develop, many large mammals disappear.
PLANT LIFE: Grasslands
SEA LIFE: Whales
Pliocene
GEOGRAPHY AND CLIMATE: Continents in their present positions, Climate cools.
TERRESTRIAL ANIMAL LIFE: crazing hoofed animals successful. mammals mostly as they are today. Human ancestors appear in Africa. Rats arrive.
PLANT LIFE: Grasslands.
SEA LIFE: Whales. |
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Geological Guide to
Caistor St Edmund
At the top of the quarry, there are several meters of pleistocene gravels. These gravels contain flints, stones and sands. The quarry actually lets out part of the site to a gravel company which processes these gravels.
Below this, and sitting directly on-top of the chalk is the Norwich Crag basement bed. This bed is full of flints, stones and gravels, as well as shelly material and bones. The actual chalk here is the Beeston Chalk of Late Campanian age.
Recent excavation, April 2008 at the site, the Norwich Crag Basement Bed and Gravels have been removed in preparation for extracting the chalk. The very top of the chalk is exposed as a platform ready for digging.
Campanian
71 - 83 MYA |
| (Upper Chalk) |
Belemnitella mucronate Zone |
Studland Bay |
| Flamborough Chalk Formation |
South Landing Member |
Danes Dyke |
| Danes Dyke Member |
| Sewerby Member |
Paramoudra Chalk |
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Beeston Chalk |
|
Weybourne Chalk |
|
Pre-Weybourne Chalk |
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Portsdown Chalk Member |
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Culver Group |
Spetisbury Chalk Member |
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Tarrant Chalk Member |
Newhaven Group |
Whitecliff Ledge Member |
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Bastion Steps |
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Meeching |
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Peacehaven |
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Old Nore Marl |
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