Early Cambrian Humid, Tropical, Coastal Paleosols from Montana, USA

  title={Early Cambrian Humid, Tropical, Coastal Paleosols from Montana, USA},
  author={Gregory J. Retallack},
  • G. Retallack
  • Published 1 April 2013
  • Environmental Science, Geography, Geology
A putative Precambrian paleosol mapped at the unconformity between the Cambrian Flathead Sandstone and Belt Supergroup at Fishtrap Lake, Montana, was found instead to be a succession of paleosols forming the basal portion of the Flathead Sandstone. Early Cambrian age of these paleosols comes from stratigraphic ranges of associated marine trace fossils: Bergaueria hemispherica, Didymaulichnus lyelli, Torrowangea sp. indet., and Manykodes pedum. Instead of a single strongly developed paleosol on… 
Arumberia and other Ediacaran–Cambrian fossils of central Australia
ABSTRACT Problematic fossils are described from Late Ediacaran to Early Cambrian red sandstones of the Arumbera Sandstone, Grant Bluff, and Central Mount Stuart Formations in central Australia,
Ediacaran sedimentology and paleoecology of Newfoundland reconsidered
Field and laboratory tests for recognition of Ediacaran paleosols
Liu (2016) provides elegant evidence for pyritization of bedding planes at Ediacaran fossil localities of Newfoundland, but fails to demonstrate the ‘death mask' model of moldic preservation for two
Affirming life aquatic for the Ediacara biota in China and Australia: COMMENT
[Xiao et al. (2013)][1] argue that Ediacaran fossils were not in paleosols because some Australian beds contain the problematic fossil Eoandromeda also known from Chinese beds they consider marine.


Cambrian paleosols and landscapes of South Australia
Cambrian marine, grey shales are widespread, and so are Cambrian intertidal, redbeds with weakly developed marine-influenced paleosols. A broader view of Cambrian landscapes and soilscapes now comes
Early Cambrian and Older Trace Fossils from the Southern Cordillera of Canada
  • F. Young
  • Geography, Environmental Science
  • 1972
Metazoan trace fossils of Early Cambrian and older age have been found in parts of the Gog, Cariboo, and Miette Groups of eastern British Columbia and western Alberta. Most of them occur in beds
Were Ediacaran siliciclastics of South Australia coastal or deep marine?
The Late Neoproterozoic Ediacara Member of the Rawnsley Quartzite in South Australia has been considered aeolian, fluvial, intertidal and deep marine by various authors. Palaeosols would not be
Well Preserved Late Precambrian Paleosols from Northwest Scotland
ABSTRACT Two paleosol profiles were developed side by side on gneiss (Sheigra clay paleosol) and amphibolite (Staca clay paleosol) along the same unconformable contact of Lewisian metamorphic rocks
Problematic megafossils in Cambrian palaeosols of South Australia
Abstract:  Red calcareous Middle Cambrian palaeosols from the upper Moodlatana Formation in the eastern Flinders Ranges of South Australia formed in well‐drained subhumid floodplains and include a
Weathering and paleosol formation in the 1.1 Ga Keweenawan Rift
Trace fossils and the Upper Vendian boundary in the southeastern White Sea region
Among numerous localities of Late Proterozoic (Vendian) fossilized soft-bodied organisms, the southeastern White Sea region is the most informative one owing primarily to high taxonomic diversity of
Petrology of the Middle Cambrian Wolsey Shale of Southwestern Montana
ABSTRACT The Wolsey Shale is a transitional unit between the coarsely clastic Flathead Sandstone below and the Meagher (Limestone) Formation above. The Wolsey Shale consists of predominantly green
Lowermost Cambrian Ichnofabrics from the Chapel Island Formation, Newfoundland: Implications for Cambrian Substrates
Abstract Bioturbation long has been ‘blamed’ for eliminating late Proterozoic-style sedimentary structures and fabrics. While the presence of diverse and complex burrows in lowermost Cambrian strata