scholarly journals The moraines of the Missouri Coteau and their attendant deposits

10.3133/b144 ◽  
1896 ◽  
Keyword(s):  
Missouri Coteau

CONTRIBUTIONS TO THE HOLOCENE PALEOECOLOGY OF WESTCENTRAL CANADA: A LATE-GLACIAL DEPOSIT FROM THE MISSOURI COTEAU

1964 ◽  
Vol 42 (6) ◽  
pp. 677-692 ◽  
Author(s):  
J. C. Ritchie ◽  
Bernard de Vries
Keyword(s):  
Great Plains ◽  
Late Glacial ◽  
Pollen Spectrum ◽  
Pollen Diagram ◽  
Glacial Deposit ◽  
Carbon 14 ◽  
Missouri Coteau ◽  
Plant Assemblages ◽  
Mixed Prairie ◽  
Artemisia Pollen

A buried deposit of limnic sediment was excavated from a site on the Missouri Coteau of Saskatchewan, within the Mixed Prairie section of the Great Plains. Carbon-14 determinations indicate that the section is late-glacial, possibly deposited during an interstadial terminated by the Condie (= Valders?) re-advance. On the basis of the records of about 60 taxa of Tracheophyta and a pollen diagram, the section is characterized by lower, middle, and upper plant assemblages. It is suggested that the lower and upper assemblages, distinguished mainly by a Picea – Shepherdia canadensis – Salix – Artemisia pollen spectrum, indicate the prevalence on mesic sites of a spruce forest. The middle assemblage, having an array of macrofossils and a few microfossils of temperate geographical affinity and a pollen spectrum suggesting relatively less spruce and (or) more herbaceous vegetation, is interpreted in terms of a mixed spruce–poplar forest on mesic sites with shrub and grassland communities on the more xeric habitats. This tripartite division of the section in terms of ecologically concordant plant assemblages suggests an amelioration of environment followed by a deterioration which was probably correlative with the Condie re-advance.

BRYOPHYTE SUBFOSSILS OF A LATE-GLACIAL DEPOSIT FROM THE MISSOURI COTEAU, SASKATCHEWAN

1965 ◽  
Vol 43 (8) ◽  
pp. 947-953 ◽  
Author(s):  
B. de Vries ◽  
C. D. Bird
Keyword(s):  
Boreal Forest ◽  
Higher Plants ◽  
Late Glacial ◽  
Organic Layer ◽  
Middle Zone ◽  
Higher Plant ◽  
Glacial Deposit ◽  
Boreal Species ◽  
The North ◽  
Missouri Coteau

Bryophyte and associated macro-subfossils were recovered from a kettle located in prairie southwest of Moose Jaw in the Missouri Coteau of southern Saskatchewan. The higher plants were discussed in an earlier paper.Three samples taken from the organic layer gave C14 datings ranging from 11,650 ± 150 to 10,270 ± 150 B.P.Sixteen species and one variety of Musci were recovered. Eleven of these were found in the lowermost zone at a depth of 510–450 cm. This zone was composed of bryophytes and higher plants characteristic of a modern Picea forest. Fifteen bryophyte taxa were recovered from the middle zone at a depth of 450–290 cm. The macro-subfossils in this zone are typical of a present-day Populus–Picea forest. No bryophytes were found in the upper layer, 290–280 cm characterized by higher plant macro-subfossils and pollen typical of a modern Picea forest.All bryophytes recovered belong to present-day taxa; however, many of the boreal species are not now found in the region as the southern margin of the boreal forest is now 200 miles to the north.

scholarly journals A Swainson's hawk staging area long the Missouri Coteau in southeast Saskatchewan

Blue Jay ◽  
2005 ◽  
Vol 63 (1) ◽  
Author(s):  
Martin Bailey ◽  
Carol Bjorklund
Keyword(s):  
Missouri Coteau ◽  
Staging Area

Life cycle of the marsh grass, Scolochloa festucacea

1973 ◽  
Vol 51 (9) ◽  
pp. 1661-1668 ◽  
Author(s):  
Alan L. Smith
Keyword(s):  
Life Cycle ◽  
Great Plains ◽  
Low Temperatures ◽  
Dominant Species ◽  
Freezing Point ◽  
Northern Great Plains ◽  
Missouri Coteau ◽  
Marsh Grass

This paper describes the life cycle of Scolochloa festucacea, a dominant species in potholes subjected to regular burning or mowing throughout the Drift Prairie and Missouri Coteau of the Northern Great Plains. Vernal growth is initiated at extremely low temperatures; some plants grow in water at the freezing point. Flowers develop in June if the pothole is inundated in the spring. Mature caryopses drop in July, but do not germinate until the next year. Tillers and new rhizomes are produced in August, followed by senescence in late September – early October.

The Dirt Hills structure: an ice-thrust feature in southern Saskatchewan, Canada

1997 ◽  
Vol 34 (1) ◽  
pp. 76-85 ◽  
Author(s):  
E. A. Christiansen ◽  
E. Karl Sauer
Keyword(s):  
Shear Zone ◽  
Shear Zones ◽  
Thrust Faults ◽  
Last Deglaciation ◽  
Missouri Coteau ◽  
Compressive Flow ◽  
Single Block ◽  
The Last Deglaciation

The Dirt Hills structure is expressed at the surface as a broad, arcuate moraine, 7.5 km wide, 120 m high, and 40 km long. The structure is composed mainly of bedrock and drift consisting of three slabs stacked to form a single block 215 m thick. The shear zones that bound the slabs are mainly in clays of the Bearpaw Formation. The Dirt Hills structure originated during the last deglaciation when the glacier, under compressive flow, readvanced up the Missouri Coteau escarpment and stacked the subglacial slabs of bedrock and drift. The subparallel, arcuate ice-thrust ridges are formed presumably by imbricate thrust faults originating from the uppermost shear zone.

Remote wetland assessment for Missouri Coteau prairie glacial basins

Wetlands ◽  
10.1672/10 ◽  
2005 ◽  
Vol 25 (2) ◽  
pp. 335-349 ◽  
Author(s):  
Rebecca L. Phillips ◽  
Ofer Beeri ◽  
Edward Shawn DeKeyser
Keyword(s):  
Wetland Assessment ◽  
Missouri Coteau

DUCK NEST SURVIVAL IN THE MISSOURI COTEAU OF NORTH DAKOTA: LANDSCAPE EFFECTS AT MULTIPLE SPATIAL SCALES

2005 ◽  
Vol 15 (6) ◽  
pp. 2137-2149 ◽  
Author(s):  
Scott E. Stephens ◽  
Jay J. Rotella ◽  
Mark. S. Lindberg ◽  
Mark L. Taper ◽  
James K. Ringelman
Keyword(s):  
North Dakota ◽  
Spatial Scales ◽  
Nest Survival ◽  
Multiple Spatial Scales ◽  
Missouri Coteau ◽  
Landscape Effects
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