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Pickerill et al., 1993
Ichnology of the Palaeogene Richmond Formation of eastern Jamaica - the final chapter?
Pickerill, R. K., Donovan, S. K., Doyle, E. N., Dixon, H. L.
DOI | 10.4138/1990 |
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Aasta | 1993 |
Ajakiri | Atlantic Geology |
Köide | 29 |
Number | 1 |
Leheküljed | 61–67 |
Tüüp | artikkel ajakirjas |
Keel | inglise |
Id | 19533 |
Abstrakt
Previously unrecorded ichnotaxa from the Palaeogene Richmond Formation of eastern Jamaica, namely Cosmorhaphe cf. gracilis, Helminthoida crassa, Paleodictyonl isp. and Taenidium cameronensis, are described. The ichnotaxa are assigned to a previously defined deep-water Scolicia ichnocoenosis characteristic of turbiditic strata. The general exclusion of graphoglyptids in these strata is believed to reflect a combination of the relatively shallow- water depths in which the turbiditic strata accumulated, the abundant organic matter available for biological consumption, and the existence of fluctuating dysaerobic/anoxic and oxygenated conditions at, or immediately below, the sediment-water interface.
Viimati muudetud: 25.11.2022