skip to main content
Idioma:

The context of lowstand events in the Kimmeridgian (Late Jurassic) sequence stratigraphic evolution of the Wessex–Weald Basin, Southern England

Taylor, S.P ; Sellwood, B.W

Sedimentary geology, 2002-07, Vol.151 (1), p.89-106 [Periódico revisado por pares]

Elsevier B.V

Texto completo disponível

Citações Citado por
  • Título:
    The context of lowstand events in the Kimmeridgian (Late Jurassic) sequence stratigraphic evolution of the Wessex–Weald Basin, Southern England
  • Autor: Taylor, S.P ; Sellwood, B.W
  • Assuntos: Kimmeridgian ; Lowstands ; Marine ; Sequence stratigraphy ; Wessex–Weald Basin
  • É parte de: Sedimentary geology, 2002-07, Vol.151 (1), p.89-106
  • Notas: ObjectType-Article-2
    SourceType-Scholarly Journals-1
    ObjectType-Feature-1
    content type line 23
  • Descrição: A depositional sequence stratigraphic framework for the Kimmeridgian Stage of the Wessex–Weald Basin, southern England, is applied in the investigation of the sedimentary and erosional response to proposed lowstand events. This framework recognises 13 sequence boundaries (Km1-Km13) and is based on the integrated assessment of geophysical, sedimentological, palaeontological and geochemical data. Changes in the nature and continuity of Kimmeridgian unconformity surfaces record the effect of the reorganisation of the onshore basins in response to eustasy and tectonic movements. During the Earliest Kimmeridgian, the basin geometry was such that falls in relative sea level generated widespread unconformities. Associated lowstand events are recorded in marginal areas by a number of sand units, derived from a variety of local sources. A tectonically enhanced deepening event during the late Early Kimmeridgian (Eudoxus Zone) led to unconformities being confined in their distribution, to the basin margins. As sea level fell during the Latest Kimmeridgian, a progressive reduction in the depositional area led to an amplification of the effects of lowstand processes at the basin margins where unconformity surfaces are amalgamated. On the most positive areas these surfaces are overprinted by a major interregional hiatus, the ‘Late Cimmerian Unconformity’. The timing and effects of Kimmeridgian lowstand events were intimately linked to the tectonic evolution of the Wessex–Weald Basin. Thus at times when rates and amounts of eustatic change are small (i.e. during ‘greenhouse times’) the tectonic signature of a basin will be the primary signal recorded in sedimentary successions.
  • Editor: Elsevier B.V
  • Idioma: Inglês
Voltar para lista de resultados

  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

Buscando em bases de dados remotas. Favor aguardar.