Cristin-resultat-ID: 1847512
Sist endret: 12. november 2020, 18:09
Resultat
Doktorgradsavhandling
2019

Continental to Shallow Marine Transition in a Tide-Dominated, Low Accommodation Basin - Controlling Factors and Depositional Architecture

Bidragsytere:
  • Valentin Zuchuat

Utgiver/serie

Utgiver

University of Oslo

Om resultatet

Doktorgradsavhandling
Publiseringsår: 2019
Antall sider: 245
Revidert utgave

Beskrivelse Beskrivelse

Tittel

Continental to Shallow Marine Transition in a Tide-Dominated, Low Accommodation Basin - Controlling Factors and Depositional Architecture

Sammendrag

Modern tide-dominated, regressive shorelines featuring deltas estuaries and lagoons are well characterised and distinctive from wave or fluvial dominated systems. However, some ancient tidedominated basins and their associated sedimentary successions do not relate well to any of the above-mentioned, present-day systems. The Utah-Idaho Trough a semi-enclosed, narrow, and shallow foreland basin flooded during the Upper Jurassic by the Curtis Sea is one of these exceptions. The main target of this doctoral thesis is the Upper Jurassic, tide-dominated Curtis Formation, which outcrops in east-Central Utah, where it overlies the Middle Jurassic, aeolian deposits of the Entrada Sandstone. The Curtis Formation is defined at its base by the J-3 Unconformity and is conformably overlain by supratidal sabkha deposits of the Summerville Formation. The Entrada-Curtis-Summerville is subdivided into eight facies associations (FA 1-8), with six subfacies associations (FA 1a, 1b, 3a, 3b, 4a, 4b). Based on the specific three-dimensional arrangement of these facies associations, it is proposed to separate the Curtis Formation into three informal subunits: The lower, middle and upper Curtis. The lower Curtis, which consists of upper shoreface to beach deposits (FA 2), mud- (FA 3a) and sand-dominated heterolithic subtidal flat sediments (FA 3b),

Bidragsytere

Valentin Zuchuat

  • Tilknyttet:
    Forfatter
    ved Seksjon for geologi og geofysikk ved Universitetet i Oslo

Ivar Midtkandal

  • Tilknyttet:
    Veileder
    ved Seksjon for geologi og geofysikk ved Universitetet i Oslo

Alvar Braathen

  • Tilknyttet:
    Veileder
    ved Seksjon for geologi og geofysikk ved Universitetet i Oslo
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