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Large sea, small tides: the Late Carboniferous seaway of NW Europe.
- Source :
-
Journal of the Geological Society . May2005, Vol. 162 Issue 3, p417-420. 4p. 2 Diagrams, 1 Graph. - Publication Year :
- 2005
-
Abstract
- Debate surrounds the extent of tidal influence in Palaeozoic shallow epi-continental seas. In the absence of analogical reasoning, numerical modelling provides a quantitative means of investigating tidality in the geological record. Herein a new finite element model, tested for accuracy on the present-day Mediterranean, is used to predict an exceedingly low tidal range (<10 cm) in the epi-continental seaway that covered much of NW Europe during the Late Carboniferous. This small bulge may have been amplified to c. 1 m in estuaries, leading to the localized deposition of cyclic rhythmites, agreeing with geological observations. Extremely low tidal ranges in ancient epi-continental seas may be one mechanism to prevent water-body mixing, enhancing stratification and promoting anoxia. [ABSTRACT FROM AUTHOR]
- Subjects :
- *FINITE element method
*TIDES
*SEAS
*HYPOXEMIA
Subjects
Details
- Language :
- English
- ISSN :
- 00167649
- Volume :
- 162
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- Journal of the Geological Society
- Publication Type :
- Periodical
- Accession number :
- 17368060
- Full Text :
- https://doi.org/10.1144/0016-764904-128