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  • MacLachlan, Ian (Arts and ScienceGeographyUniversity of Lethbridge, 2004-01)
    This unpublished manuscript provides an account of industrial development in the City of Lethbridge, Alberta, Canada from a geographical and historical perspective.
  • Townshend, Ivan; MacLachlan, Ian; O'Donoghue, Dan (Canadian Indian/Native Studies AssociationArts and ScienceGeographyUniversity of Lethbridge, 2004)
    An exploratory study of the employment specialization/diversity of Prairie First Nations Communities (FNCs) in relation to the employment structure of five comparative settlement system base profiles that are found within ...
  • MacLachlan, Ian (University of Toronto PressArts and ScienceGeographyUniversity of Lethbridge, 2001)
    Comprehensive in its treatment of the whole system surrounding the Canadian beef industry, Kill and Chill offers a history of the structural changes in Canada's cattle and beef commodity chain, beginning with calf production ...
  • Hugenholtz, Chris H.; Barchyn, Thomas E. (Blackwell Publishing Ltd.Arts and ScienceDepartment of GeographyUniversity of Lethbridge, 2011-02-23)
    This paper reports the results of laboratory and field tests that evaluate the performance of a new laser particle counter for measuring aeolian sand transport. The Wenglor® model YH03PCT8 (Wenglor) consists of a laser ...
  • MacLachlan, Ian; MacKay, Bruce (Historical Society of AlbertaArts and ScienceGeographyUniversity of Lethbridge, 2000)
    For the first nine years of transcontinental airline service, 1939-1948, Lethbridge was western Canada's principal airline hub. The city was ideally situated to fulfill this function due to its location on the southerly ...
  • Barendregt, Rene W.; Enkin, Randolph J.; Tessler, Dez L. (Institute of Geophysics of the ASCRArts and ScienceDepartment of GeographyGeological Survey of CanadaUniversity of Lethbridge, 2011)
    Two new records of glacial stratigraphy obtained from borecores collected in southcentral Saskatchewan are compared to previously published records from Wellsch Valley and Swift Current Creek in southern Saskatchewan. ...
  • Mahaney, W.C.; Hamilton, T.S.; Barendregt, R.W.; Hancock, R.G.V.; Costa, P. (ElsevierArts and ScienceDepartment of GeographyYork UniversityCamosun CollegeMcMaster UniversityUniversity of LisbonDundee UniversityUniversity of Lethbridge, 2013)
    Iron and Al extracts as weathering indices in paleosols have been used in many localities to determine relative age, transformation of total chemical element concentrations to secondary forms, translocation of ...
  • MacLachlan, Ian; Townshend, Ivan (Arts and ScienceGeographyUniversity of Lethbridge, 2007-08-20)
    Structure of Talk: Regional Impact of BSE Crisis; Discuss data issues; Describe shift and share model (Notation, Sailboat racing metaphor, & Shift‐share identity); Examine preliminary results; Future research.
  • Barnewall, Emily C; University of Lethbridge. Faculty of Arts and Science (Lethbridge, Alta. : University of Lethbridge, Department of Biological Sciences, c2011Arts and ScienceDepartment of Biological Sciences, 2011)
    Yellow toadflax, Linaria vulgaris (L.) Mill. (Plantaginaceae), is a non-native invasive plant. Rhinusa pilosa Germar (Coleoptera: Curculionidae) is a proposed biocontrol agent. Gall development by R. pilosa was described ...
  • Jackson, L.E.; Nelson, F.E.; Huscroft, C.A.; Villeneuve, M.; Barendregt, R.W.; Storer, J.E.; Ward, B.C. (ElsevierArts and ScienceDepartment of GeographyGeological Survey of CanadaUniversity of LethbridgeThompson Rivers UniversitySimon Fraser University, 2011)
    Neogene volcanism in the Fort Selkirk area began with eruptions in the Wolverine Creek basin ca. 4.3 Ma and persisted to ca. 3.0 Ma filling the ancestral Yukon River valley with at least 40 m of lava flows. Activity at ...
  • MacLachlan, Ian; Townshend, Ivan; Aitken, Sheena (Arts and ScienceGeographyUniversity of Lethbridge, 2006-06)
  • Barchyn, Thomas E.; Hugenholtz, Chris H. (Blackwell Publishing Ltd.Arts and ScienceDepartment of GeographyUniversity of Lethbridge, 2012-09-12)
    The activity of inland aeolian dune fields is typically related to the external forcing imposed by climate: active (bare) dunes are associated with windy and/or arid settings, and inactive (vegetated) dunes are associated ...
  • Hanson, Michelle Andree; Enkin, Randolph Jonathan; Barendregt, Rene William; Clague, John Joseph (ElsevierArts and ScienceDepartment of GeographySaskatchewan Geological SurveyGeological Survey of CanadaUniversity of LethbridgeSimon Fraser University, 2014)
    Repeated outburst flooding from glacial LakeMissoula,Montana, affected large areas of Washington duringMarine Oxygen Isotope Stage 2 (29–14 ka).We present the first high-resolution rock magnetic results from two sites ...
  • Hugenholtz, Chris H.; Barchyn, Thomas E. (Blackwell Publishing Ltd.Arts and ScienceDepartment of GeographyUniversity of Lethbridge, 2012-01-26)
    From high-resolution satellite imagery of barchan sand dunes, we provide geomorphological evidence of collisions that result in the ejection of a barchan from the wake of another barchan dune. Previous interpretations ...
  • Johnson, Catherine L; Constable, Catherine G; Tauxe, Lisa; Barendregt, Rene; Brown, Laurie L; Coe, Rob; Gans, Phil; Layer, Paul; Mejia, Vicky; Opdyke, Neil D; Singer, Brad; Staudigel, Hubert; Stone, David (Arts and ScienceDepartment of GeographyUniversity of British ColumbiaScripps Institution of Oceanography, University of CaliforniaUniversity of LethbridgeUniversity of MassachussettsUniversity of California, Santa CruzUniversity of California, Santa BarbaraUniversity of AlaskaUniversity of FloridaUniversity of Wisconsin, 2015-06-12)
    We present a synthesis of paleomagnetic directional data collected from 873 lava flows at 17 different locations under the collaborative Time Averaged geomagnetic Field Initiative (TAFI). The data range from 05 Ma in ...
  • MacLachlan, Ian (Alberta Association, Canadian Institute of PlannersArts and ScienceGeographyUniversity of Lethbridge, 1992)
    On August 4, 1992 Western Diversification Canada (WD) celebrated its 5th birthday. This anniversary provides an excellent opportunity to examine WD's mandate and programs and to assess the allocation of funding under its ...
  • MacLachlan, Ian; Townshend, Ivan (Arts and ScienceGeographyUniversity of Lethbridge, 2007-07-17)
    Structure of Talk: Global rural: Zoonosis!; Beef Production is Important in Rural Alberta; Alberta’s BSE Crisis in Context; Half full or half empty? (We dodged a bullet! Perfect Storm); Regional Impact of BSE Crisis.
  • Hugenholtz, Chris H.; Levin, Noam; Barchyn, Thomas E.; Baddock, Matthew C. (ElsevierArts and ScienceDepartment of GeographyUniversity of Lethbridge, 2012)
    For more than four decades remote sensing images have been used to document and understand the evolution of aeolian sand dunes. Early studies focused on mapping and classifying dunes. Recent advances in sensor technology ...
  • MacLachlan, Ian (International Geographical Union, Commission on Monitoring Cities of TomorrowArts and ScienceGeographyUniversity of Lethbridge, 2002-12)
    The concept of situation, or the relative location of a place, includes two subsidiary components: intermediacy and centrality. Urban boosterism, the promotion of growth in a local centre in competition with other places ...
  • MacLachlan, Ian (Geografía y Desarrollo, MéxicoArts and ScienceGeographyUniversity of Lethbridge, 1998)
    To explain trends in inequality in Mexico, three theoretical approaches to income inequality are outlined: Kuznets' inverted "U", Mexican crisis theory, and the informal-formal duality. Empirical data are used to construct ...

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