Southern Region Chalk Group Lithostratigraphy: Sussex lithostratigraphy of Mortimore (1986a) - Seaford Chalk Member: Difference between revisions

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The Seaford Chalk Member, c. 65 m thick, is marked by the upper of the two Shoreham Marls at the base, and the lowest of the Buckle Marls at the top (Mortimore, 1986a). The member comprises soft, pure white, regularly flinty chalk, with marl seams in the lower part, and locally conspicuous beds of inoceramid bivalve shell fragments (Mortimore, 1986a). Mortimore (1986a) subdivided the Seaford Chalk as follows:
The Seaford Chalk Member, c. 65 m thick, is marked by the upper of the two Shoreham Marls at the base, and the lowest of the Buckle Marls at the top (Mortimore, 1986a). The member comprises soft, pure white, regularly flinty chalk, with marl seams in the lower part, and locally conspicuous beds of inoceramid bivalve shell fragments (Mortimore, 1986a). Mortimore (1986a) subdivided the Seaford Chalk as follows:
 
{| class="wikitable" cellpadding="0" cellspacing="0" align="left"
 
| Member
{| cellpadding="0" cellspacing="0" align="left"
| Beds
|
|-
|
| rowspan="3" | Seaford Chalk
| Haven Brow
|-
| Cuckmere
|-
| Belle Tout
|}
|}
'''Macrofossil Biozonation''':            ''M. coranguinum'' Zone
'''Macrofossil Biozonation''':            ''M. coranguinum'' Zone


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see Correlation with other UK Chalk Group successions
see Correlation with other UK Chalk Group successions


 
===References===
'''<u>References:</u>'''


'''MORTIMORE, R N'''.1986a. Stratigraphy of the Upper Cretaceous White Chalk of Sussex. ''Proceedings of the Geologists' Association'', Vol. '''97'''(2), 97-139.
'''MORTIMORE, R N'''.1986a. Stratigraphy of the Upper Cretaceous White Chalk of Sussex. ''Proceedings of the Geologists' Association'', Vol. '''97'''(2), 97-139.

Revision as of 13:52, 4 October 2013

The Seaford Chalk Member, c. 65 m thick, is marked by the upper of the two Shoreham Marls at the base, and the lowest of the Buckle Marls at the top (Mortimore, 1986a). The member comprises soft, pure white, regularly flinty chalk, with marl seams in the lower part, and locally conspicuous beds of inoceramid bivalve shell fragments (Mortimore, 1986a). Mortimore (1986a) subdivided the Seaford Chalk as follows:

Member Beds
Seaford Chalk Haven Brow
Cuckmere
Belle Tout

Macrofossil Biozonation: M. coranguinum Zone

Correlation: see Correlation with other Southern Region Chalk Group classifications

see Correlation with other UK Chalk Group successions

References

MORTIMORE, R N.1986a. Stratigraphy of the Upper Cretaceous White Chalk of Sussex. Proceedings of the Geologists' Association, Vol. 97(2), 97-139.

See: marl, flint, Shoreham Marls

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