Results 161 to 170 of about 1,171 (203)
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Geological Society, London, Special Publications, 2006
Abstract Three fundamental terms in ichnology are: (1) assemblage, which is equivalent to an assemblage of body fossils; (2) ichnocoenosis, which is a trace fossil assemblage produced by a biological community
Adrian P. Hunt, Spencer G. Lucas
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Abstract Three fundamental terms in ichnology are: (1) assemblage, which is equivalent to an assemblage of body fossils; (2) ichnocoenosis, which is a trace fossil assemblage produced by a biological community
Adrian P. Hunt, Spencer G. Lucas
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Two New, Substrate-Controlled Nonmarine Ichnofacies
Ichnos, 2016ABSTRACTSubstantial ichnocoenoses of ichnofossil assemblages in nonmarine environments can be grouped into two, substrate-controlled ichnofacies. These are traces in plant tissues (mostly wood and leaves) and in bone. Plant tissues and bones provide distinctive, “hardground” substrates that are colonized and/or utilized in the nonmarine realm by a ...
Spencer G. Lucas
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2007
Abstract The ichnofacies paradigm endures as the elegant, unifying framework within which accurate ichnological observations and their reliable environmental interpretations can be derived from the rock record. These recurring, strongly facies-controlled groupings of trace fossils, reflecting specific combinations of organism behavior
James A. MacEachern +3 more
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Abstract The ichnofacies paradigm endures as the elegant, unifying framework within which accurate ichnological observations and their reliable environmental interpretations can be derived from the rock record. These recurring, strongly facies-controlled groupings of trace fossils, reflecting specific combinations of organism behavior
James A. MacEachern +3 more
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Environmental Factors Affecting the Development of the Zoophycos Ichnofacies in the Lower Cretaceous Río Mayer Formation (Austral Basin, Patagonia) [PDF]
Palaeogeography, Palaeoclimatology, Palaeoecology, 2015 The Río Mayer Formation (Berriasian-Albian) is part of the basal infill of the Austral Basin, southwestern Gondwana. In the Los Glaciares National Park (Santa Cruz Province) seven sections were sedimentologically studied in detail.
Sebastián Miguel Richiano
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Ichnofacies: a mixture of taphofacies and biofacies
Lethaia, 1991The environmental significance of individual ichnofacies has become a point of debate, and the Scoyenia ichnofacies is not clearly defined. Removal of the marine/non-marine boundary from ichnofacies definitions, as well as the bathymetry control, would render the Scoyenia ichnofacies unnecessary and would consolidate the definitions of the remaining ...
Bromley, Granville Richard +1 more
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Cretaceous Chalk Ichnofacies in Northern Europe
Geobios, 1984Abstract The Upper Cretaceous chalk of northern Europe is a pure calcitic, pelagic deposit which appears to be totally bioturbated in almost all cases. Trace fossils are abundant but there is no single association of trace fossils that can characterize all chalk.
A A Ekdale
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Ichnofacies and bathymetry: a passive relationship
Journal of Paleontology, 1990Ichnofacies stand today as one of the more elegant but widely misunderstood concepts in ichnology, especially where paleobathymetry is concerned. Marine ichnofacies arenotintended to be paleobathometers, as some workers continue to imply (e.g., Lockley et al., 1987; Ekdale, 1988); rather, they are archetypical facies models based upon recurring ...
Robert W. Frey +2 more
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Ichnofacies of a Wave-Dominated Shoreline
1992Abstract The Upper Cretaceous sediments of the Blackhawk Formation of the Mesa Verde Group are interpreted as a complex of wave-dominated, prograding, siliciclastic shoreline parasequences. The Spring Canyon Member, of the Blackhawk Formation is representative of the shoreline deposits and was preserved in core of the Exxon Production
S. George Pemberton +2 more
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The Glossifungites Ichnofacies
1985Abstract The Glossifungitesichnofacies, albeit areally restricted, constitutes a distinct intermediary between freely shifting, particulate substrates of the Skolithosichnofacies and fully consolidated substrates of the Trypanitesichnofacies. All three typically occur within, but are not restricted to, littoral to shallow sublittoral,
S. George Pemberton, Robert W. Frey
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2018
Seilacherian ichnofacies are defined as trace fossil assemblages that recur through long intervals of geologic time and are more or less characteristic of a given set of environmental conditions (Frey and Pemberton 1984, 1985). Essential to the ichnofacies concept is their archetypal nature.
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Seilacherian ichnofacies are defined as trace fossil assemblages that recur through long intervals of geologic time and are more or less characteristic of a given set of environmental conditions (Frey and Pemberton 1984, 1985). Essential to the ichnofacies concept is their archetypal nature.
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