Journal
NETHERLANDS JOURNAL OF GEOSCIENCES-GEOLOGIE EN MIJNBOUW
Volume 83, Issue 1, Pages 17-31Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0016774600020436
Keywords
palynology; palaeobotany; Late Jurassic; palaeo-ecology; palaeoclimate; sea-level
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Based on recent vegetation distribution and an integration of macropalaeobotanical and palynological information, a palaeo-community model is explored that may permit detailed interpretations of quantitative sporomorph distribution patterns in the Jurassic and Early Cretaceous of NW-Europe in terms of changes in palaeoenvironment (sea-level, climate). The conceptual model is based on the recognition of Sporomorph Ecogroups (SEGs) that reflect broad co-existing plant communities, viz. upland, lowland, river, pioneer, coastal, and tidally-influenced SEGs. In successive palynological assemblages, shifts in the relative abundance of SEGs are thought to be indicators of sea-level changes. Climatic changes may be recognised through significant shifts within the quantitative composition of individual SEGs.
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