@article {Gouramanis:2003:0812-0099:811,
title = "Fluviodeltaic sedimentology and ichnology of part of the Silurian Grampians Group, western Victoria",
journal = "Australian Journal of Earth Sciences",
parent_itemid = "infobike://tandf/aes",
publishercode ="tandf",
year = "2003",
volume = "50",
number = "5",
publication date ="2003-10-01T00:00:00",
pages = "811-825",
itemtype = "ARTICLE",
issn = "0812-0099",
eissn = "1440-0952",
url = "https://www.ingentaconnect.com/content/tandf/aes/2003/00000050/00000005/art00010",
doi = "doi:10.1111/j.1440-0952.2003.01028.x",
keyword = "Grampians Group, Silurian, sedimentology, ichnology, Victoria, fluviodeltaic",
author = "Gouramanis, C. and Webb, J. A. and Warren, A. A.",
abstract = "The midSilurian Major Mitchell Sandstone of the Grampians Group outcrops at Mt Bepcha, western Victoria, represent a prograding fluviodeltaic sequence comprising four lithofacies and five ichnofacies. The stratigraphically lowest Interbedded Sandstone/Siltstone Facies is characterised by thin sandstone and siltstone beds with softsediment deformation and scours with gravelly lag deposits. This lithofacies contains Thalassinoides, Palaeophycus, Rhizocorallium and intrastratal burrows, together indicative of the Cruziana Ichnofacies, and is interpreted as a shallowmarine depositional environment on a lowenergy delta front with minor tidal influences. The overlying Massive Sandstone Facies lacks silt, and consists of predominantly massive and some planelaminated sandstone, abundant Skolithos linearis , rare Palaeophycus and a single small Cruziana problematica ; the tracefossil assemblage is assigned to the Skolithos Ichnofacies. This facies is believed to have been deposited in a marine highenergy shoreface environment with continuously shifting sands, affected by periodic flooding events from the mouth of a nearby river. Above this is the Trough Crossbedded Facies, which contains trough crossbedding with gravelly lag deposits, a northwest palaeocurrent direction and large Taenidium barretti burrows (Burrowed Ichnofacies). This facies also contains abundant planelaminated sandstone with a northeastsouthwest palaeocurrent direction and ichnofossils of Scoyenia and Daedalus , representing the Scoyenia Ichnofacies. The Trough Crossbedded Facies is interpreted to have been deposited in shallow lowsinuosity channels by overbankflooding events, most likely on a delta plain. The uppermost facies, the Planelaminated Facies, contains thin beds of currentlineated, planelaminated graded coarse to fine sandstone that preserve arthropod trackways (Arthropod Ichnofacies). This facies was deposited on a periodically sheetflooded, subaerially exposed delta plain.",
}