ISSN:0008-3658    

DOI:10.1111/j.1541-0064.1953.tb01719.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY

摘要:

ABSTRACTIn spite of the use to which aerial photographs have been put in southern Ontario, there has not yet been developed a complete key for the interpretation of landforms. Accordingly, a beginning has been made on this work by the authors as a project in the Department of Geography in the University of Toronto. Certain landforms such as river valleys andescarpments are easily interpreted, but most of the forms of the glaciated landscape are not easily identified. The factors which are used in identifying lands are shape, tone, texture and shadow. Man‐made patterns often provide a clue to the nature of the landform. Such a key cannot be developed without personal experience in the reading of the photographs on the ground in the exact area in which the interpretation was made. It is from the personal experience of the authors in different areas of southern Ontario that this key has been prepare

ISSN:0008-3658    

DOI:10.1111/j.1541-0064.1953.tb01720.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY

ISSN:0008-3658    

DOI:10.1111/j.1541-0064.1953.tb01721.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY

摘要:

SUMMARYThe drumlin‐like landforms that Tyrre'll described in 1896 as lrdrumlinoidstl are themost characteristic features of glacial origin in the Barren Grounds. Their widespread distribution throughout the glacial‐drift covered portions of this region, as well as manyother regions in more southerly lati‐tudes covered by glacial materials, implies that thedrumlinoids are a rather significant landform developed under a continental glaciation. A yet, the pro‐cesses involved in their formation can only be speculated upon, or at best, drumlinoids might be regarded as being related to drumlins and therefore formed in a similar manner. There are a number of glaciological and geomorphological factors apparently affecting theirformation. Some of these are discussed here, but, until more detailed investigations have been carried out especially in field surveys, and a definite classification of such features has been evolved, drumlinoids can only be definitely described as widespread features which re‐sulted frc TI both depositional and erosional processes of a continental ice sheetFurther study concerning the nature and orientations of the drumlfnoids in the BarrenGrounds, and elsewhere, dong with an investigation into the pro‐cesses involved En their origin should bring to light much useful Information. Such information would not only concern glacial geology and geomorphology, but also glaciology, and, indirectly, glacial

ISSN:0008-3658    

DOI:10.1111/j.1541-0064.1953.tb01722.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY

ISSN:0008-3658    

DOI:10.1111/j.1541-0064.1953.tb01723.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY

ISSN:0008-3658    

DOI:10.1111/j.1541-0064.1953.tb01724.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY

ISSN:0008-3658    

DOI:10.1111/j.1541-0064.1953.tb01725.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY

ISSN:0008-3658    

DOI:10.1111/j.1541-0064.1953.tb01726.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY

ISSN:0008-3658    

DOI:10.1111/j.1541-0064.1953.tb01727.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY

ISSN:0008-3658    

DOI:10.1111/j.1541-0064.1953.tb01728.x

出版商:Blackwell Publishing Ltd    

年代:1953

数据来源: WILEY