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초록· 키워드
A palynological investigation of the Sansudong Formation, Jinan Basin, has been carried out and a small number of poorly preserved pteridophyte spores were recorded for the first time. The palynofacies are dominated by land-derived plant debris, in particular black irregular, and black elongate wood fragments and cuticles. The colour of the spores and phytoclasts examined under a transmitted light microscope, shows that the organic matter was heated to over 200°C, indicating that it is over-mature for hydrocarbon generation. It is directly correlated with the numerical thermal alteration index of Batten (1996), being rated at 7. This reflects local metamorphism by post-depositional volcanic intrusion/extrusion along the right-lateral fault fracture zone of the basin. The relatively good sorting of the terrestrially derived palynodebris and the absence of marine microfossils suggests that the sediments comprising the Sansudong Formation were transported a fairly long distance to the depositional site near the centre of the basin where fluvio-lacustrine conditions prevailed. The synthesis of the spore assemblage recorded associated with other published data suggests that the formation is probably of Early Cretaceous (Barremian?) age.
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목차
- Abstract
- INTRODUCTION
- GEOLOGY
- MATERIAL AND METHODS
- PALYNOFACIES
- BIOSTRATIGRAPHY
- RESULTS AND CONCLUSIONS
- ACKNOWLEDGEMENTS
- 요약
- REFERENCES
참고문헌
참고문헌 신청최근 본 자료
UCI(KEPA) : I410-ECN-0101-2010-457-002181924
