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Auteur Frank Oldfield |
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Titre : Episodes in the Quaternary history of south-west France Type de document : Imprimé Auteurs : Frank Oldfield Editeur : University of Leicester Année de publication : 1962 Langues : Anglais (eng) Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=75057 Oldfield, Frank , 1962. Episodes in the Quaternary history of south-west France. University of Leicester, [S.l.].Documents numériques
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thèse (1962)Adobe Acrobat PDFLate quaternary deposits at Le Moura, Biarritz, south-west France / Frank Oldfield in New Phytologist, 63 (1964)
Titre : Late quaternary deposits at Le Moura, Biarritz, south-west France Type de document : Imprimé Auteurs : Frank Oldfield Année de publication : 1964 Article en page(s) : 374 et seq Langues : Anglais (eng) Résumé : The present paper describes pollen-analytical and stratigraphic evidence and macroscopic plant remains from Full-, Late- and Post-glacial deposits at Le Moura, a valley bog near Biarritz, South West France. The last part of the Full-glacial period probably saw the existence of treeless conditions in the area whilst during the Late-glacial period, pine (including Pinus uncinata) and tree birches spread into the area and forested episodes alternated with periods of park woodland and steppe-tundra. In the Late-glacial deposits at Le Moura, indications of hydroseral and terrestial plant successions intermingle in contrapuntal fashion, and only when a detailed palaeo-ecological analysis of the evidence was carried out did any satisfactory indication of climatic change during the period emerge. The main Late-glacial episodes closely parallel those from north-west Europe, a mild forested phase presumably contemporary with the Allerod (zone II) occurs, preceded and succeeded by less wooded, cooler episodes. A pre-Allerød climatic oscillation of apparently short duration and narrow amplitude is tentatively detected. Among the Full- and Late-glacial plant records, Armeria sp., Cryptogramma crispa, Centaurea cyanus, Empetrum nigrum, Ephedra cf. distachya, Erica tetralix, Euphorbia amygdaloides, Pinus sylvestris and P. uncinata, Polygonum cf. viviparum and Valeriana dioica may be noted. The Post-glacial record is incomplete, there being a discontinuity in deposition giving rise to the absence of any records from the whole of the period considered equivalent to British pollen zone VIIb, early zone VIII and late zone VIIa. The dominant woodland species throughout the earlier part of the Post-glacial period are the oaks and pine, with hazel, whilst alder and beech appear towards the top of the diagram. Other mixed oak forest elements are very scarce. Both the strati-graphic and pollen-analytical records show that the end of phase P2 (approximately equivalent to British zone VI) at the site was a relatively dry continental period. Whilst the highest levels of the series include records for recently introduced plants such as maize and a species of cedar, earlier pre-cultural levels include pollen records of Vitis, Olea, Daboecia cantabrica, Erica vagans and Quercus ilex. The biogeographical significance of the plant records and the palaeo-climato-logical reconstructions is briefly discussed. Lien pérenne : DOI : 10.1111/j.1469-8137.1964.tb07390.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=136077
in New Phytologist > 63 (1964) . - 374 et seqOldfield, Frank 1964 Late quaternary deposits at Le Moura, Biarritz, south-west France. New Phytologist, 63: 374 et seq.Documents numériques
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Article (1964)URL
est un extrait de V Simposio de flora Europaea (20-30 de mayo de 1967). Trabajos y comunicaciones / Simposio de flora Europaea (5; 1967; Sevilla, España) (1969)
Titre : The quaternary history of vegetation in south west France Type de document : Extrait d'ouvrage Auteurs : Frank Oldfield ; E. Vokes Année de publication : 1969 Importance : 119-132 En ligne : https://bibdigital.rjb.csic.es/idviewer/15667/138 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=150960 Oldfield, Frank, Vokes, E. 1969 The quaternary history of vegetation in south west France. In: V Simposio de flora Europaea (20-30 de mayo de 1967). Trabajos y comunicaciones. Publicaciones de la Universidad de Sevilla, Sevilla: 119-132.
Titre : The quaternary vegetational history of the french Pays Basque : I. Stratigraphy and pollen analysis Type de document : Imprimé Auteurs : Frank Oldfield Année de publication : 1968 Article en page(s) : 671-731 Langues : Anglais (eng) Lien pérenne : DOI : 10.1111/j.1469-8137.1968.tb05494.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=136079
in New Phytologist > 67 (1968) . - 671-731Oldfield, Frank 1968 The quaternary vegetational history of the french Pays Basque : I. Stratigraphy and pollen analysis. New Phytologist, 67: 671-731.Documents numériques
Article (1968)URL
Titre : The quaternary vegetational history of the french Pays Basque : II. Plant macrofossils and additional pollen-analytical data Type de document : Imprimé Auteurs : E. Huckerby ; Frank Oldfield Année de publication : 1976 Article en page(s) : 499-526 Langues : Anglais (eng) Résumé : This paper presents macrofossil data and additional pollen analyses from the Quaternary sites previously described in Oldfield (1967). Pollen evidence presented in that paper from Bidart Plage Series B (Bidartian) and Senix Series 1 (Moulignan and Senixian) is amplified and extended by more detailed and comprehensive diagrams. The additional pollen-analytical evidence from the Bidart section confirms the importance of a Castanea-dominated pollen assemblage zone within the Bidartian Interglacial. The new diagram from Senix shows that the Moulignan major biostratigraphic subdivision is likewise interglacial in character. The late-temperate and post-temperate stages of this interglacial are well represented by the Senix and Mouligna Cliff pollen sequences now published. The macrofossil evidence from Bidart Series B(Bidartian), Mouligna Cliff MC3 (Ilbarritzian) and Marbella (Marbellan) is represented on a quantitative basis using large and volumetrically equivalent samples from each level. The main additions to the flora from these macrofossil diagrams are a wide variety aquatic and semi-aquatic species including, for the Bidartian, Ludwigia palnstris and for the Marbellan, Aldrovandra vesiculosa and Proserpinaca cf. palnstris a North American species not previously recorded in Post-Tiglian deposits from Europe. From Bidart, there are also interesting macrofossil records of woody warm temperate taxa, for example Chamaecyparis thyoides, Cotoneaster acuticarpa and Ostrya cf. carpinifolia. The non-aquatic macroflora from Marbella is dominated by Erica species the seeds of which have been identified largely on the basis of the fine detail of their seed coats revealed by Scanning Electron Microscopy (Huckerby, Marchant and Oldfield, 1972). The macrofossil diagram from Marbella gives a detailed picture of the complex hydroseral changes taking place during the late- and post-temperate stages of the interglacial. Along with the stratigraphic and pollen-analytical evidence from the site it allows a rather comprehensive reconstruction of ecological changes taking place around the site in response to factors such as climate and soil deterioration and rising sea-level. Macrofossil records are presented from the early pleistocene Bidart Series A, the oldest material studied. The richness of the narrow peat lens in ericaceous remains strongly supports the inference from the stratigraphic and pollen-analytical record that the site represents the organic part of the ‘A’ Horizon of an acid, wet heath soil profile. Other suites of macrofossil records from Senix, Series 1, and Mouligna Cliff, MC 1 (Moulignan and Senixian), from Chabiague (Chabiaguian) and from Mouligna Plage (mid-Flandrian) are tabulated. Sediment from the coldest totally deforested episodes of each of the major cold phases considered to be contemporary with glaciation at higher latitudes and altitudes, either completely lacks or is exceptionally poor in macroscopic plant remains. At no site are the identified remains incompatible with the ecological interpretation of the apparently deforested intervals advanced on the basis of the pollen-analytical evidence (Oldfield, 1967). The macroflora from the Artemisia-rich, supposedly cool, dry episodes of low but not minimal tree pollen-representation, such as Ilbarritzian III includes open ground species of southern (e.g. Valeriana tuberosa) as well as northern affinities and tends to support previous suggestions that the flora during such periods was geographically mixed. With the completion of the macrofossil analyses from the sites, it is proposed to publish a final paper summarizing all the Quaternary palaeobotanical evidence from the area and commenting briefly on its general ecological and biogeographical significance.
Lien pérenne : DOI : 10.1111/j.1469-8137.1976.tb01535.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=136070
in New Phytologist > 77 (1976) . - 499-526Huckerby, E., Oldfield, Frank 1976 The quaternary vegetational history of the french Pays Basque : II. Plant macrofossils and additional pollen-analytical data. New Phytologist, 77: 499-526.Documents numériques
Article (1976)URL
