PLANT FOSSIL DISTRIBUTIONS IN SOME AUSTRALIAN PERMIAN NONMARINE SEDIMENTS

被引:33
作者
MCLOUGHLIN, S
机构
[1] Department of Geology, University of Western Australia, Nedlands
关键词
D O I
10.1016/0037-0738(93)90104-D
中图分类号
P5 [地质学];
学科分类号
0709 ; 081803 ;
摘要
Plant remains occur in all post-Devonian, lowland, terrestrial depositional systems, with distinctive assemblages characterizing discrete environments. Glossopterid gymnosperms dominate most Australian Permian coal-bearing sediments. Herbaceous pteridophytes, sphenophytes, and lycophytes are best represented in lower deltaic lacustrine and paludal deposits. Non-glossopterid gymnosperms mostly colonized drier floodplain and upland environments and are poorly represented in Australian Permian sequences. Fresh- and brackish-water algae are abundantly preserved in paludal and lacustrine facies in both alluvial and delta plain environments. Seasonal productivity and taphonomic factors undoubtedly influenced the composition of interseam compression/impression floras but integration of information from these assemblages with that from permineralized peats, in-situ coalified plants, and coal maceral and palynological analyses can assist in the interpretation of Australian Permian coal-forming environments and the structure of plant communities.
引用
收藏
页码:601 / 619
页数:19
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