Landslides and bedrock geology associations, Mount Martin, Yukon Territory - Northwest Territories - British Columbia

Anastrophyllum assimile (Mitt.) Steph. and Marsupella revoluta (Nees) Lindb. are reported from the Keele Peak area, central-eastern Yukon Territory, Canada, and M. revoluta is also reported from Devon Island, Northwest Territories, Canada. These new localities extend a pattern of disjunct occurrences throughout the known range of both species, which further support the hypothesis of their relictual status. However, collections of A. assimile from coastal British Columbia and the Alexander Archipelago, Alaska, are indicative of strong oceanic affinities of North American populations of this species. Also, the arctic and alpine localities at which either A. assimile or M. revoluta might be expected to occur in the interior of Alaska and the Yukon are limited in number as both species invariably occur in association with siliceous substrates.

Landslides and bedrock geology associations, Babiche Mountain, Yukon Territory - Northwest Territories

10.4095/214407 ◽

2003 ◽

Author(s):

I R Smith ◽

K M Fallas ◽

L S Lane

Keyword(s):

Northwest Territories ◽

Yukon Territory ◽

Bedrock Geology

Geology, Mount Martin, Yukon Territory-Northwest, Territories-British, Columbia

10.4095/222639 ◽

2006 ◽

Author(s):

K M Fallas

Keyword(s):

British Columbia ◽

Northwest Territories ◽

Yukon Territory

Semitubina yukonensis new species, first occurrence of this biogeographically distinctive Old World Realm gastropod genus in the Lower Devonian of the western hemisphere

Journal of Paleontology ◽

10.1017/s0022336000018266 ◽

2001 ◽

Vol 75 (2) ◽

pp. 466-470 ◽

Cited By ~ 5

Author(s):

Robert B. Blodgett ◽

Jiří Frýda ◽

Alfred C. Lenz

Keyword(s):

British Columbia ◽

Northwest Territories ◽

Lower Devonian ◽

Yukon Territory ◽

Western Hemisphere ◽

East Central ◽

Early Devonian ◽

Western Cordillera ◽

First Occurrence ◽

Mackenzie Mountains

Despite the rapidly expanding knowledge of Lower Devonian brachiopod faunas of the Western Cordillera of Canada (Lenz, 1976, 1977a, 1977b, 1982; Ludvigsen, 1970; Perry, 1984; Perry and Lenz, 1978; Perry et al., 1974, 1981), equivalent data on coeval gastropod faunas from this region are non-existent; to date, no publications have appeared in which gastropods have been described. Blodgett et al. (1988, table 1) provided faunal lists for two Lower Devonian localities in Western Canada: 1) Lochkovian-Emsian age collections from the Mackenzie Mountains, Northwest Territories, collected by the late D. G. Perry as part of his Ph.D. dissertation (Perry, 1984); and 2) an early Emsian collection from the Mt. Lloyd George area, British Columbia. We are currently examining the gastropod material recovered by A. C. Lenz from his richly diverse collections in the Royal Creek area, Yukon Territory, equivalent in age to those gathered by D. G. Perry from the Mackenzie Mountains. This note is the first of several papers focused on these paleobiogeographically significant faunas, and it is our desire to ultimately make clear the character of this Early Devonian province, which appears to include strata of British Columbia, Yukon and Northwest Territories, as well as the non-accreted portion of adjacent east-central Alaska.

Map symbology and analysis of box and polyclinal folds, with examples from the Rocky Mountain Foothills of northeastern British Columbia and the Liard Ranges of southeastern Yukon Territory and southwestern Northwest Territories

Canadian Journal of Earth Sciences ◽

10.1139/e01-071 ◽

2002 ◽

Vol 39 (2) ◽

pp. 145-155

Author(s):

Glen S Stockmal ◽

Thomas E Kubli ◽

Lisel D Currie ◽

Michael R McDonough

Keyword(s):

British Columbia ◽

Northwest Territories ◽

Rocky Mountain ◽

Yukon Territory

The hinge surface traces of some types of folds cannot be portrayed adequately on maps using traditional symbology. Specifically, there are no widely accepted symbols suitable for hinge surfaces of (1) box folds (a class of polyclinal folds with two hinges), (2) folds whose limbs both dip in the same direction, or (3) overturned folds whose limbs dip in opposite directions. The latter two cases are not uncommon for hinges within polyclinal or composite folds. An unambiguous symbology is proposed, illustrated using hypothetical examples, and applied to the analysis of kilometre-scale folds mapped in the Rocky Mountain Foothills of northeastern British Columbia and the Franklin Mountain Liard Ranges of southeastern Yukon Territory and southwestern Northwest Territories.