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The Sequence of Microspore Assemblages Associated with the Occurrence of Crassidurite in Coal Seams of Yorkshire

Published online by Cambridge University Press:  01 May 2009

A. H. V. Smith
A. H. V. Smith
Affiliation:
National Coal Board, 14 Endcliffe Avenue, Sheffield, 10.
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Abstract

An investigation of the sequence of microspores vertically within a number of seams containing horizons of crassidurite has revealed a succession of three distinct phases, each characterized in the main by the dominance of one of the three genera Lycospora, Laevigato-sporites, and Densosporites, The succession begins with the Lycospore phase and culminates in the crassidurite with the Densospore phase. The significance of this succession in relation to the formation of crassidurite and the provenance of Densospores is discussed.

Type
Articles
Information
Geological Magazine , Volume 94 , Issue 5 , October 1957 , pp. 345 - 363
Copyright
Copyright © Cambridge University Press 1957

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