scholarly journals Dispersal and provenance studies of clasts in till and eskers in the proposed National Park Reserve, east arm of Great Slave Lake

2013 ◽  
Author(s):  
D E Kerr ◽  
R D Knight ◽  
D R Sharpe ◽  
D I Cummings ◽  
B A Kjarsgaard ◽  
...  
Keyword(s):  
National Park ◽  
Provenance Studies ◽  
Great Slave Lake

scholarly journals Gold grain counts from till and esker samples in the proposed national park reserve, east arm of Great Slave Lake

2013 ◽  
Author(s):  
D E Kerr ◽  
R D Knight ◽  
D R Sharpe ◽  
D I Cummings ◽  
B A Kjarsgaard ◽  
...  
Keyword(s):  
National Park ◽  
Great Slave Lake

scholarly journals Regional correlation of the Sonsela Member (Upper Triassic Chinle Formation) and detrital U-Pb zircon data from the Sonsela Sandstone bed near the Sonsela Buttes, northeastern Arizona, USA, support the presence of a distributive fluvial system

Geosphere ◽  
2019 ◽  
Vol 15 (4) ◽  
pp. 1128-1139 ◽  
Author(s):  
Adam D. Marsh ◽  
William G. Parker ◽  
Daniel F. Stockli ◽  
Jeffrey W. Martz
Keyword(s):  
National Park ◽  
Provenance Studies ◽  
Northern Arizona ◽  
Regional Correlation ◽  
Chinle Formation ◽  
Petrified Forest National Park ◽  
Continental Basin ◽  
Land Vertebrate ◽  
Lithostratigraphic Correlation ◽  
Petrified Forest

AbstractThe Sonsela Sandstone bed was first named as an informal unit in the lower part of the Chinle Formation in northern Arizona, USA, and it was later assigned a type section near the Sonsela Buttes, where it is composed of two prominent sandstone units separated by a predominately siltstone unit. The Sonsela Sandstone bed has been correlated to a number of specific sandstones within the thicker, formal Sonsela Member at Petrified Forest National Park in northern Arizona. Here, we present the first detrital U-Pb zircon data for the Sonsela Sandstone bed at the Sonsela Buttes to hypothesize the maximum deposition age of that unit (216.6 ± 0.3 Ma) that are consistent with the proposed lithostratigraphic correlation with the fossiliferous Jasper Forest bed of the lower part of the Sonsela Member at the Park. These results are corroborated by previous high-resolution U-Pb dates and detrital zircon provenance studies from Petrified Forest National Park and similar sections in northern Arizona and western New Mexico, USA. The hypothesized chronostratigraphic correlation of these sandstones throughout northern Arizona permits the recognition of diachronous facies distributions in the lower part of the Chinle Formation as these coarse sediments prograded from the southwest into a continental basin already receiving finer-grained fluvial sediments from the southeast. The new age data corroborate the Norian age designation for the Sonsela Member (and the Sonsela Sandstone bed) and suggest that the Sonsela Sandstone bed at the Sonsela Buttes is within the Adamanian land vertebrate estimated holochronozone.

scholarly journals A Facies Approach to the Stratigraphic Analysis of Late Wisconsinan Sediments in the Portal Creek Area, Jasper National Park, Alberta

2007 ◽  
Vol 40 (2) ◽  
pp. 129-144 ◽  
Author(s):  
Victor Levson ◽  
Nathaniel W. Rutter
Keyword(s):  
National Park ◽  
Classification Scheme ◽  
Facies Analysis ◽  
Environment Analysis ◽  
Jasper National Park ◽  
Provenance Studies ◽  
The Third ◽  
Stratigraphic Analysis ◽  
Graphic Record ◽  
Late Wisconsinan

ABSTRACT Glacial diamictons described and sampled during regional stratigraphie studies in Jasper National Park, Alberta, Canada, are categorized using a facies approach. The classification scheme is based on objective field criteria but it is designed to ultimately aid in genetic interpretations of the described deposits which are required for meaningful stratigraphie correlations. The utility of the facies approach in solving stratigraphie problems is tested by the analysis of a complex sequence of glacial diamictons in the Portal Creek area. Genetic interpretations placed on the facies were supported by general agreement between theoretical and observed facies sequences, and proved useful in solving stratigraphie problems. Stratigraphic and provenance studies in the Portal Creek region reveal three major sediment packages of distinct provenance indicating that three separate glacial episodes may have occurred. However, an environment analysis of the deposits shows that the oldest two groups of sediment probably were deposited during the same episode. Changes in till provenance are believed to be the result of fluctuations in the dominance of two confluent glaciers originating in different valleys. The facies analysis supports the stratigraphie evidence that the third sedimentary package was deposited in a distinct glacial episode at a significantly later time than the underlying deposits. Although stratigraphie correlations with dated sediments are tentative, both glacial events recorded in the Portal Creek strati-graphic record are presumed to be Late Wisconsinan in age.

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