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Facies and sequence stratigraphy of eocene paleovalley fills in the eastern Eucla Basin, South Australia

Hou, B L; Alley, N F; Frakes, LA; Gammon, Paul R; Clarke, Jonathan

Description

The Eocene succession filling palaeovalleys in the northeastern Eucla Basin, South Australia, is interpreted using facies and sequence-stratigraphic models based on relative sea-level changes. The dominantly fluvial sediments were deposited in incised valleys which graded basinwards to an estuarine coastal plain under warm and humid palaeoclimatic conditions. Sedimentological examination suggests a tidal influence in this fluvial succession. Fluvial-estuarine-shoreline facies associations can...[Show more]

dc.contributor.authorHou, B L
dc.contributor.authorAlley, N F
dc.contributor.authorFrakes, LA
dc.contributor.authorGammon, Paul R
dc.contributor.authorClarke, Jonathan
dc.date.accessioned2015-12-13T23:12:15Z
dc.date.available2015-12-13T23:12:15Z
dc.identifier.issn0037-0738
dc.identifier.urihttp://hdl.handle.net/1885/87964
dc.description.abstractThe Eocene succession filling palaeovalleys in the northeastern Eucla Basin, South Australia, is interpreted using facies and sequence-stratigraphic models based on relative sea-level changes. The dominantly fluvial sediments were deposited in incised valleys which graded basinwards to an estuarine coastal plain under warm and humid palaeoclimatic conditions. Sedimentological examination suggests a tidal influence in this fluvial succession. Fluvial-estuarine-shoreline facies associations can be recognised in these (Eocene) sequences, each of which comprises a diverse assemblage of lithofacies that can be grouped into lowstand and/or transgressive and highstand system tracts. Since the palaeorivers had hydrological connection with the sea, deposition was dominantly controlled by sea-level changes. Results of the study indicate that two third-order Eocene eustatic cycles have largely controlled sedimentation. The resulting key surfaces (unconformity, and transgressive, tidal/wave ravinement, and maximum flooding surfaces) bound depositional sequences which extend over significant areas and may be used in basin-wide correlations of stratal packages.
dc.publisherElsevier
dc.sourceSedimentary Geology
dc.subjectKeywords: Eocene; eustacy; facies analysis; sequence stratigraphy; valley fill; Australia Australia; Eocene; Facies; Palaeovalley; Sequence stratigraphy
dc.titleFacies and sequence stratigraphy of eocene paleovalley fills in the eastern Eucla Basin, South Australia
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume163
dc.date.issued2003
local.identifier.absfor040399 - Geology not elsewhere classified
local.identifier.ariespublicationMigratedxPub17464
local.type.statusPublished Version
local.contributor.affiliationHou, B L, CRC for Landscape Environments and Mineral Exploration / Primary Industries &
local.contributor.affiliationAlley, N F, CRC for Landscape Environments and Mineral Exploration / Primary Industries &
local.contributor.affiliationFrakes, LA, University of Adelaide
local.contributor.affiliationGammon, Paul R, University of Adelaide
local.contributor.affiliationClarke, Jonathan, College of Physical and Mathematical Sciences, ANU
local.bibliographicCitation.startpage111
local.bibliographicCitation.lastpage130
local.identifier.doi10.1016/S0037-0738(03)00175-1
dc.date.updated2015-12-12T08:30:54Z
local.identifier.scopusID2-s2.0-0348224672
CollectionsANU Research Publications

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