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Orbital forcing of palynofacies in the Jurassic of France and the United Kingdom

Orbital forcing of palynofacies in the Jurassic of France and the United Kingdom
Orbital forcing of palynofacies in the Jurassic of France and the United Kingdom
Palynofacies analysis of marine Jurassic sedimentary successions in France and the United Kingdom demonstrates the pervasiveness of regular cycles in qualitative and quantitative aspects of the microscopic particulate organic content of the rocks, especially that part which is ignored during routine palynology. The cycles are attributed to precession, obliquity, and eccentricity forcing. Most of the palynofacies cycles are independent of lithology, whether it be cyclic, irregular, or uniform. Terrestrially derived organic particles record the effects of orbital cyclicity on land, which may be controlled by orbital cycles different from those controlling marine sediment deposition. The majority of studies on orbital cyclicity in the sedimentary record concentrate on cyclicity in lithology. This study demonstrates that sections lacking regular lithological cycles may still record evidence of orbital forcing of both the depositional environment and sediment source and transport.
0091-7613
511-514
Waterhouse, H.K.
84578b2c-668c-4a35-a1ab-333589a03114
Waterhouse, H.K.
84578b2c-668c-4a35-a1ab-333589a03114

Waterhouse, H.K. (1999) Orbital forcing of palynofacies in the Jurassic of France and the United Kingdom. Geology, 27 (6), 511-514. (doi:10.1130/0091-7613(1999)027<0511:OFOPIT>2.3.CO;2).

Record type: Article

Abstract

Palynofacies analysis of marine Jurassic sedimentary successions in France and the United Kingdom demonstrates the pervasiveness of regular cycles in qualitative and quantitative aspects of the microscopic particulate organic content of the rocks, especially that part which is ignored during routine palynology. The cycles are attributed to precession, obliquity, and eccentricity forcing. Most of the palynofacies cycles are independent of lithology, whether it be cyclic, irregular, or uniform. Terrestrially derived organic particles record the effects of orbital cyclicity on land, which may be controlled by orbital cycles different from those controlling marine sediment deposition. The majority of studies on orbital cyclicity in the sedimentary record concentrate on cyclicity in lithology. This study demonstrates that sections lacking regular lithological cycles may still record evidence of orbital forcing of both the depositional environment and sediment source and transport.

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Published date: 1999

Identifiers

Local EPrints ID: 1367
URI: http://eprints.soton.ac.uk/id/eprint/1367
ISSN: 0091-7613
PURE UUID: 9cf513eb-6018-479c-b0a2-bb684ead46e8

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Date deposited: 19 Apr 2004
Last modified: 15 Mar 2024 04:43

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Author: H.K. Waterhouse

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