Middle Devonian (Eifelian) spores from a fluvial dominated lake margin in the Orcadian Basin, Scotland
Middle Devonian (Eifelian) spores from a fluvial dominated lake margin in the Orcadian Basin, Scotland
The stratigraphic distribution of Mid Devonian spores is recorded from the Easter Town Burn Siltstone Member. A significant inception within the section is Ancyrospora grandispinosa. This indicates that the Easter Town Siltstone Member is a correlative of the basin-wide Achanarras lake horizon and not pre-Achanarras as hitherto assumed. It is also a correlative of the local nodular limestones. These limestones represent areas without significant clastic input, while the Easter Town Burn Siltstone Member is the point at which significant fluvial input entered an embayment at the margin of the Orcadian lake. This gives a clastic dominated Achanarras equivalent. A new species of Verrucosisporites (V. loboziakii) is described.
miospores, Devonian, Eifelian, taxonomy, lake sediments, Scotland
195-209
Marshall, J.E.A.
cba178e3-91aa-49a2-b2ce-4b8d9d870b06
Fletcher, T.P.
eb41e99f-631a-45c7-a670-860b9659b8ee
2002
Marshall, J.E.A.
cba178e3-91aa-49a2-b2ce-4b8d9d870b06
Fletcher, T.P.
eb41e99f-631a-45c7-a670-860b9659b8ee
Marshall, J.E.A. and Fletcher, T.P.
(2002)
Middle Devonian (Eifelian) spores from a fluvial dominated lake margin in the Orcadian Basin, Scotland.
Review of Palaeobotany and Palynology, 118 (1-4), .
(doi:10.1016/S0034-6667(01)00114-2).
Abstract
The stratigraphic distribution of Mid Devonian spores is recorded from the Easter Town Burn Siltstone Member. A significant inception within the section is Ancyrospora grandispinosa. This indicates that the Easter Town Siltstone Member is a correlative of the basin-wide Achanarras lake horizon and not pre-Achanarras as hitherto assumed. It is also a correlative of the local nodular limestones. These limestones represent areas without significant clastic input, while the Easter Town Burn Siltstone Member is the point at which significant fluvial input entered an embayment at the margin of the Orcadian lake. This gives a clastic dominated Achanarras equivalent. A new species of Verrucosisporites (V. loboziakii) is described.
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Published date: 2002
Keywords:
miospores, Devonian, Eifelian, taxonomy, lake sediments, Scotland
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Local EPrints ID: 12700
URI: http://eprints.soton.ac.uk/id/eprint/12700
ISSN: 0034-6667
PURE UUID: 1380ce12-2dd5-4f13-b2b0-0b8a6dbc6e46
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Date deposited: 29 Nov 2004
Last modified: 16 Mar 2024 02:35
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Author:
T.P. Fletcher
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