Chalk Biozone 12 - Callaiosphaeridium asymmetricum: Difference between revisions

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Created page with " '''Age:''' Early Campanian. '''Macrofaunal correlation''': The lowermost ''O. pilula'' Zone to the middle ''G. quadrata'' Zone. '''Definition''': The interval between the..."
 
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'''Age:'''  Early Campanian.
'''Age:'''  Early Campanian.


Latest revision as of 11:13, 30 September 2013

Age: Early Campanian.

Macrofaunal correlation: The lowermost O. pilula Zone to the middle G. quadrata Zone.

Definition: The interval between the LAD of Cassiculosphaeridia reticulata to the LAD of Callaiosphaeridium asymmetricum.

Comments: The index for the top of this biozone, Callaiosphaeridium asymmetricum, has a well established LAD within the Q. quadrata Zone (Haq et al., 1987; Costa & Davey, 1992).

Lithostratigraphical correlation: The Newhaven Chalk and Culver Chalk formations (Southern Province), the Flamborough Chalk Formation (Northern Province) and the Mackerel Formation (North Sea).

Retrieved from "http://earthwise-staging.bgs.ac.uk/index.php?title=Chalk_Biozone_12_-_Callaiosphaeridium_asymmetricum&oldid=1565"