Eocene fan delta‐submarine fan deposition in the Wagwater Trough, east‐central Jamaica

Wescott, William A.; Ethridge, Frank G.

doi:10.1111/j.1365-3091.1983.tb00667.x

Cited by 40 publications

(21 citation statements)

References 21 publications

(14 reference statements)

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“…In all of these units, the data from trace fossils has provided additional evidence relating to their palaeoenvironmental interpretation. This is particularly true for the Richmond Formation, which is depauperate in body fossils and was hitherto interpreted on the basis of sedimentology alone (Westcott and Etheridge, ; Etheridge and Westcott, ). Differences among formations in the diversity of ichnotaxa must, in part, be related to differences in lithofacies and absolute water depth.…”

Section: Discussionmentioning

confidence: 99%

Jamaican Cenozoic ichnology: review and prospectus

2014

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Jamaica has the most diverse record of Cenozoic trace fossils of any of the Antillean islands, with over 100 ichnospecies divided among more than 50 ichnogenera. Trace fossils have been identified from both shallow‐ and deep‐water deposits in most major lithostratigraphic divisions, namely the Paleogene Richmond Formation (Wagwater Group), the mid‐Cenozoic White Limestone Group and the Neogene Coastal Group. Persistent ichnogenera in these palaeoenvironments include the burrows Palaeophycus Hall, Planolites Nicholson, Taenidium Heer and Thalassinoides Ehrenberg (deeper water), and the borings/microborings Entobia Bronn, Gastrochaenolites Leymerie and Oichnus Bromley (shallow water). Differences in diversity of ichnotaxa between formations can, in part, be due to differences in lithofacies and absolute water depth. This is recognized in the differences in deeper water lithofacies between the Richmond Formation (siliciclastic turbidites), White Limestone Group (chalks), Lower Coastal Group (submarine mass flow deposits) and Upper Coastal Group (deep fore reef). Intervals and lithofacies still awaiting detailed investigation include Pleistocene red beds and fore‐reef, Pliocene raised reef and shallow siliciclastic shelf, and most of the varied palaeoenvironments represented by the Eocene Yellow Limestone Group. Only crocodile coprolites (Eocene) are attributable to vertebrates; algal microborings apart, the only plant traces are Pleistocene root casts that await description. Copyright © 2014 John Wiley & Sons, Ltd.

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Section: Discussionmentioning

confidence: 99%

Jamaican Cenozoic ichnology: review and prospectus

2014

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“…3). It consists of about 1200 m of varied lithofacies, deposited in both shallow-and deep-water marine paleoenvironments, and is essentially part of a large fan-delta submarinefan system (Westcott and Etheridge 1983;Etheridge and Westcott 1984). These rocks have been intensely faulted and folded, have patchy exposure, and may be highly weathered except where exposed by frequent landslides.…”

Section: Richmond Formationmentioning

confidence: 99%

Professor Ron K. Pickerill and the genesis of ichnology in the Antilles (Jamaica and Carriacou)

Donovan

2015

atgeol

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Antillean ichnology was essentially a blank book when Ron Pickerill of the University of New Brunswick, Fredericton, made his first research visit to Jamaica in February 1990. Ron's first Jamaican trace-fossil research team worked initially on the Paleogene Richmond Formation, a flysch succession. Subsequent fieldwork examined the diverse sedimentary formations of the Neogene Coastal Group. Ron's encyclopaedic knowledge of ichnotaxonomy and his enthusiasm for fieldwork led the team in many directions. Investigations were integrated with new studies of the island's sedimentology and paleontology. For example, the description of the ichnology and sedimentology of the Upper Pliocene Bowden Formation, including the internationally famous Bowden shell bed, was part of a much wider study. The case-hardened rocks of the White Limestone Group discouraged detailed study until Donovan Blissett attacked the diverse ichnobiota of these user-unfriendly rocks for his doctorate under Ron's supervision at the University of New Brunswick. Carriacou in the Grenadines was the other island to receive detailed examination in terms of its ichnofauna by Ron and his co-workers. The east coast of this small island provides a near-continuous exposure of the deep water succession of the Grand Bay Formation. Deeper-water burrows and borings in allochthonous bioclasts derived from the shallow shelf provide ichnological contrast in this formation.

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“…It is therefore likely that the sediment-gravity flows originated in a fan-deltaic setting (cf. Wescott and Etheridge 1983;Kleinsplehn et al 1984;Nemec et al 1984).…”

Section: D Facies 4: Fan-deltaicsmentioning

confidence: 99%

The arenig in South Wales: Sedimentary and volcanic processes during the initiation of a marginal basin

John-Joe

1988

Geological Journal

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Marine clastic sediments and volcanics of Arenig (Ordovician) age crop out in South Wales. These were deposited after presumed late Tremadoc erosion and subsequent arc volcanicity. Arenig sedimentation was transgressive, and followed significant erosion of the arc volcanics. Arenig conglomerates, sandstones, and mudstones were deposited in deltaic and turbiditic systems. Storm and tidal processes influenced the shallow marine deposits. The minor rhyolitic volcanics extruded during the Arenig reflect the development of Ordovician marginal basin‐type volcanics across Wales. Five sandstone petrofacies are defined and reflect differing proportions of these volcanics and of Cambrian and Precambrian basement material. Sedimentation patterns were controlled by intra‐Arenig tectonism during an overall rise in sea level. Facies and petrofacies were ponded in small, interconnected, marine sub‐basins. Earliest Arenig tectonism and sedimentation, also recognized in North Wales, reflects the initiation of a marginal basin in Wales.

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Eocene fan delta‐submarine fan deposition in the Wagwater Trough, east‐central Jamaica

Cited by 40 publications

References 21 publications

Jamaican Cenozoic ichnology: review and prospectus

Jamaican Cenozoic ichnology: review and prospectus

Professor Ron K. Pickerill and the genesis of ichnology in the Antilles (Jamaica and Carriacou)

The arenig in South Wales: Sedimentary and volcanic processes during the initiation of a marginal basin

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