M
Margaret E. Collinson
Researcher at Royal Holloway, University of London
Publications - 200
Citations - 7905
Margaret E. Collinson is an academic researcher from Royal Holloway, University of London. The author has contributed to research in topics: Megaspore & Azolla. The author has an hindex of 51, co-authored 195 publications receiving 7176 citations. Previous affiliations of Margaret E. Collinson include Birkbeck, University of London & British Museum.
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Journal ArticleDOI
Episodic fresh surface waters in the Eocene Arctic Ocean
Henk Brinkhuis,Stefan Schouten,Margaret E. Collinson,Appy Sluijs,Jaap S. Sinninghe Damsté,Gerald R. Dickens,Matthew Huber,Thomas M. Cronin,Jonaotaro Onodera,Kozo Takahashi,Jonathan P. Bujak,Ruediger Stein,Johan van der Burgh,James S Eldrett,Ian C. Harding,André F. Lotter,Francesca Sangiorgi,Han van Konijnenburg-van Cittert,Han van Konijnenburg-van Cittert,Jan W. de Leeuw,Jens Matthiessen,Jan Backman,Kathryn Moran,Expedition Scientists +23 more
TL;DR: Palaeogene sediments obtained during the Arctic Coring Expedition are analysed, showing that large quantities of the free-floating fern Azolla grew and reproduced in the Arctic Ocean by the onset of the middle Eocene epoch and that onset and termination of the Azolla phase depended on the degree of oceanic exchange between Arctic Ocean and adjacent seas.
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Environmental mutagenesis during the end-Permian ecological crisis
Henk Visscher,Cindy V. Looy,Margaret E. Collinson,Henk Brinkhuis,Johanna H.A. van Konijnenburg-van Cittert,Wolfram M. Kürschner,Mark A. Sephton +6 more
TL;DR: It is document that the microspores of these lycopsids were regularly released in unseparated tetrads indicative of failure to complete the normal process of spore development, providing concrete evidence for chronic environmental mutagenesis at the time of global ecological crisis.
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Cainozoic ferns and their distribution
TL;DR: The phytogeographic distribution of Cainozoic ferns is reported based upon a critical re-appraisal of the macrofossil and mesofossil record also taking account of evidence from a few highly diagnostic spores.
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The taphonomy of charcoal following a recent heathland fire and some implications for the interpretation of fossil charcoal deposits
TL;DR: In this article, a fire burnt an area of heathland with stands of pine and birch trees in the Frensham Common Country Park near Tilford in Surrey, southeast England.
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Experiments in waterlogging and sedimentology of charcoal: results and implications
TL;DR: In this article, the authors carried out a series of waterlogging experiments on uncharred material and charcoal from a range of different plant types and tissues, and found that buoyancy contrasts are likely to result in separation during transport and deposition.