Geologic Field Trips of the Canadian Rockies: 2017 Meeting of the GSA Rocky Mountain Section

2017 ◽  
Keyword(s):  
Rocky Mountain ◽  
Field Trips ◽  
Canadian Rockies

scholarly journals Conditions for caribou persistence in the wolf-elk-caribou systems of the Canadian Rockies

Rangifer ◽  
2007 ◽  
Vol 27 (4) ◽  
pp. 79 ◽  
Author(s):  
Mark Hebblewhite ◽  
Jesse Whittington ◽  
Mark Bradley ◽  
Geoff Skinner ◽  
Alan Dibb ◽  
...  
Keyword(s):  
National Parks ◽  
Prey Species ◽  
Rocky Mountain ◽  
Future Research ◽  
Population Estimates ◽  
Canadian Rockies ◽  
Wolf Predation ◽  
Inverse Density Dependence ◽  
Kill Rate ◽  
Numeric Response

Woodland caribou populations are considered threatened in Alberta and have declined in the Canadian Rocky Mountain National Parks of Banff and Jasper despite protection from factors causing caribou populations to decline outside of parks. Recent research emphasizes the importance of the numeric response of wolves to moose in moose-caribou-wolf systems to caribou persistence. Moose are rare in the Canadian Rockies, where the dominant ungulate prey for wolves is elk. Few studies have explored wolf-elk dynamics and none have examined implications for caribou. We used data collected in Banff to estimate the numeric response of wolves to elk from 1985 to 2005. Because no caribou kill-rate data exist for the Rockies, we explore the consequences of a range of hypothetical kill-rates based on kill-rates of alternate prey collected from 1985 to 2000 in Banff. We then multiplied the numeric response of wolves by the estimated caribou kill-rates to estimate the wolf predation response on caribou as a function of elk density. Caribou predation rates were inversely density dependent because wolf numbers depend on prey species besides caribou in multiple prey species systems. We then combined this simple wolf-elk-caribou model with observed demographic and population estimates for Banff and Jasper caribou from 2003-2004 and solved for the critical kill-rate thresholds above which caribou populations would decline. Using these critical kill-rate thresholds, Jasper caribou are likely to persist when wolf densities are below 2.1 - 4.3 wolves/1000km2 and/or when elk densities are below 0.015- 0.033 elk/km2. Thresholds for Banff caribou persistence are much lower because of inverse density dependence. Future research is needed on some of the necessary assumptions underlying our modeling including multi-prey wolf numeric responses, wolf kill-rates of caribou, caribou mortality by other predators, and spatial aspects of wolf-elk-caribou dynamics.

scholarly journals Nuptse & Lhotse Go to the Rockies by J. Asnong

2016 ◽  
Vol 5 (3) ◽  
Author(s):  
Lauren Wheeler
Keyword(s):  
Visual Experience ◽  
Reading Aloud ◽  
Rocky Mountain ◽  
Grizzly Bear ◽  
Canadian Rockies ◽  
Young Readers ◽  
Entry Points ◽  
Simple Language ◽  
Canadian Pacific Railway ◽  
Mountain Geography

Asnong, Jocey. Nuptse & Lhotse Go to the Rockies. Victoria, BC: Rocky Mountain Books, 2014. Print.Nuptse & Lhotse are sibling cats with a sense of adventure.  Finding inspiration in the Canadian Rockies, author and illustrator Jocey Asnong sends the cats on an adventure through the Canadian Rockies to help Mrs. Jasper find her missing cubs, Yoho and Kootenay.  The cats along with Mrs. Jasper travel through the scenic highlights of Mountain Parks, from the Valley of the Ten Peaks to Lake Louise, along the Canadian Pacific Railway tracks to the Spiral Tunnels and up to the Columbia Icefields, with a stop to ski along the way.The story is straightforward, with simple language that works for beginner readers or reading aloud. A map at the beginning situates the events of the story, a comparison of a teddy bear to a grizzly bear is lighthearted and informative, and a maze illustration works with the plot of finding the lost cubs and is a fun activity while reading. It is the illustrations that bring the story to life by combining pencil crayon drawings with collage to create a layered visual experience leaving something new to be discovered with each read. Seamlessly incorporated into the text and illustrations are aspects of mountain geography and culture.  This includes an explanation of the blue-green colour of the mountain lakes that is part of the cats’ stop in Lake Louise and homage to legendary mountain photographer Byron Harmon. These details make good entry points for further classroom learning and connect to a number of curriculum areas.The publisher, Rocky Mountain Books, is known for publications that celebrate mountain culture and Nuptse & Lhotse Go to the Rockies is an excellent addition to their growing catalogue for young readers. Highly recommended: 4 out of 4 starsReviewer: Lauren WheelerLauren Wheeler is a Program Lead at the Alberta Museums Association. When not assisting museums across Alberta, Lauren likes to explore and relax in her hometown of Canmore.

scholarly journals Canada’s Rocky Mountain Forests Are on the Move

Eos ◽  
2020 ◽  
Vol 101 ◽  
Author(s):  
Mara Johnson-Groh
Keyword(s):  
Rocky Mountain ◽  
Mountain Forests ◽  
Canadian Rockies

Using century-old surveying photos, scientists have mapped 100 years of change in the Canadian Rockies to document the climate-altered landscape.

EXPLORATION IN THE CANADIAN ROCKIES AND FOOTHILLS

1966 ◽  
Vol 3 (5) ◽  
pp. 713-723 ◽  
Author(s):  
L. F. Keating
Keyword(s):  
Oil And Gas ◽  
Rocky Mountain ◽  
Surface Mapping ◽  
Canadian Rockies ◽  
Reflection And Refraction ◽  
Basement Rocks ◽  
Refraction Seismic ◽  
Complex Structural ◽  
Central Montana ◽  
Main Deformation

The Canadian Rockies form the most easterly ranges of the Cordilleran system for a distance of more than 1 050 miles, from the Yukon border south into central Montana. They are bounded on the east by the Interior Plains and to the west by the Rocky Mountain Trench. The main deformation occurred during the Eocene, resulting in a system of stacked thrust plates which are restricted to the sedimentary section and do not involve the crystalline basement rocks. More than 100 miles of shortening in the sediments occurred as a result of this deformation.Exploration in this structural belt has resulted in an important oil- and gas- producing province, with the major reserves located in the southern Foothills. The vast amount of information that has been accumulated in the course of this exploration through surface mapping, drilling, and geophysical work has provided excellent structural detail over a large part of the area.Prospective structures are difficult to locate, and they require careful integration of all available geological and geophysical control. Reflection and refraction seismic methods have had considerable success in locating many of the presently producing fields and have provided information that is fundamental to our understanding of this complex structural belt.

Reconnaissance of rockslide hazards in Kananaskis Country, Alberta

1987 ◽  
Vol 24 (3) ◽  
pp. 414-429 ◽  
Author(s):  
D. M. Cruden ◽  
T. M. Eaton
Keyword(s):  
Key Words ◽  
Rocky Mountains ◽  
Sedimentary Rock ◽  
Rocky Mountain ◽  
Friction Angle ◽  
Thrust Faults ◽  
Rock Masses ◽  
Canadian Rockies ◽  
Basic Friction Angle ◽  
New Facilities

Kananaskis Country is situated in the Front Ranges of the Canadian Rockies in southwestern Alberta. Sedimentary rock thrust northeastwards forms mountain ridges that trend northwest–southeast parallel to the major thrust faults. Older, Palaeozoic rocks—mainly limestone and dolomite—form the ridges and peaks. Younger, Mesozoic rocks—sandstones, quartzites, siltstones, shales, conglomerates, and coals—are more easily eroded and form mountain passes and valleys.A reconnaissance mapped 228 rockslides, 8 km2 of rockslide debris and 96 km2 of talus. The largest rockslide exceeds 50 × 106 m3. Rockslides are most probable in the Devonian Palliser Formation, then in the Permo-Pennsylvanian Rocky Mountain Group, Mississippian Rundle Group, Devonian Fairholme Group, Mississippian Banff Formation, and the younger detrital rocks. Rockslides are most probable on dip and overdip slopes, followed by reverse-dip slopes, oblique and strike-dip slopes, and underdip slopes. Large rock masses have not slid on slopes below their basic friction angle, [Formula: see text]The reconnaissance shows that certain facilities in valleys below steep mountain slopes are exposed to rockslide hazards, and provides a guide for the location of new facilities. Analyses of two mountain slopes show that there are large, hypothetical hazards in Kananaskis. Rockslides are likely and could be destructive. Key words: Front Ranges, Rocky Mountains, Alberta, rockslides, hazards.

THE CHINOOK WIND EAST OF THE CANADIAN ROCKIES

1941 ◽  
Vol 19a (4) ◽  
pp. 57-66 ◽  
Author(s):  
H. L. Osmond
Keyword(s):  
Pressure Distribution ◽  
Short Distance ◽  
Rocky Mountain ◽  
Mountain Ridge ◽  
Canadian Rockies ◽  
Southern Alberta ◽  
Salient Features

The phenomenon known as the Chinook wind, which occurs in the foothills of the Canadian Rockies, has been investigated. A number of salient features of the Chinook have been established. The most important one is that of the pressure distribution associated with a Chinook. This involves the establishment of a pressure trough between two anticyclones, one on each side of the Rocky Mountain ridge. The location of this trough relative to the ridge is extremely important. In order that a strong Chinook occur, the trough must lie in the lee of the Rockies. It has been shown also that the region of the Chinook is in southern Alberta, extending a short distance east from the mountains.

Mitbringsel aus den Ferien

Praxis ◽  
2005 ◽  
Vol 94 (47) ◽  
pp. 1869-1870
Author(s):  
Balestra ◽  
Nüesch
Keyword(s):  
Rocky Mountains ◽  
Spotted Fever ◽  
Rocky Mountain ◽  
Rickettsia Conorii ◽  
Rocky Mountain Spotted Fever ◽  
Klinische Diagnose ◽  
Rickettsia Rickettsii

Eine 37-jährige Patientin stellt sich nach der Rückkehr von einer Rundreise durch Nordamerika mit einem Status febrilis seit zehn Tagen und einem makulösem extremitätenbetontem Exanthem seit einem Tag vor. Bei suggestiver Klinik und Besuch der Rocky Mountains wird ein Rocky Mountain spotted fever diagnostiziert. Die Serologie für Rickettsia conorii, die mit Rickettsia rickettsii kreuzreagiert, war positiv und bestätigte die klinische Diagnose. Allerdings konnte der beweisende vierfache Titeranstieg, möglicherweise wegen spät abgenommener ersten Serologie, nicht nachgewiesen werden. Nach zweiwöchiger antibiotischer Therapie mit Doxycycline waren Status febrilis und Exanthem regredient.

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