The palaeogeographic position of the Lake district in the early ordovician
By: Fortey, R.A
.
Contributor(s): Owens, R.M | Rushton, A.W.A.
Material type: 
ArticleDescription: 9-17p ; Illustration.Subject(s): Position - Paleogeography - Lake district - Great Britain | Ordovician - Lake district - Great Britain | Faunal evidence - Lake district - Great Britain | Occurance - Arenig and Llanvirn trilobites - Lake district - Great Britain | Biostratigraphy - Lake district - Great Britain
In:
Geological magazine : Vol. 126 Iss. 1-6 Year. 1989Summary: Abstract
The early Ordovician was a time of maximum continental separation and hence a time when faunal evidence can be used to assess palaeogeography in a critical way. We summarize the known trilobite occurrences (18 genera) from the Arenig–Llanvirn of the Lake District, and record some genera for the first time. Maps of the distribution of some of these forms are given. All genera except Cyclopyge were confined to the Gondwana continent at the time, and some are known from many localities; and two species are widespread in England, Wales, France, Iberia and Bohemia. The fauna is entirely distinct from those of Scandinavia and North America. All the palaeontological evidence points to the Lake District being adjacent to Ordovician Gondwana. In the earlier Ordovician it is not reasonable to suggest that the Iapetus Ocean lay to the south of the Lake District as did Allen (1987).
| Item type | Current location | Collection | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|---|
Article
|
Library and Information Centre Periodical Section | Bound Journal Collection | Not for loan | 002528_02 | ||
Serials/Scientific Journal
|
Library and Information Centre Periodical Section | Bound Journal Collection | 550 GEO (Browse shelf) | Available | 002528 |
Abstract
The early Ordovician was a time of maximum continental separation and hence a time when faunal evidence can be used to assess palaeogeography in a critical way. We summarize the known trilobite occurrences (18 genera) from the Arenig–Llanvirn of the Lake District, and record some genera for the first time. Maps of the distribution of some of these forms are given. All genera except Cyclopyge were confined to the Gondwana continent at the time, and some are known from many localities; and two species are widespread in England, Wales, France, Iberia and Bohemia. The fauna is entirely distinct from those of Scandinavia and North America. All the palaeontological evidence points to the Lake District being adjacent to Ordovician Gondwana. In the earlier Ordovician it is not reasonable to suggest that the Iapetus Ocean lay to the south of the Lake District as did Allen (1987).
There are no comments for this item.