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Pronival ramparts: A review

Show simple item record Hedding, David W. 2018-06-25T14:57:39Z 2018-06-25T14:57:39Z 2016
dc.identifier.citation Hedding, D. W. (2016). Pronival ramparts: A review. Progress in Physical Geography, 40(6), 835-855. DOI: 10.1177/0309133316678148 en
dc.description.abstract Pronival ramparts are debris ridges formed at the downslope margins of perennial or semi-permanent snowbeds beneath bedrock cliffs. These landforms, also previously known as protalus ramparts, are located in periglacial environments, but the apparent simplicity of rampart formation made these landforms far less interesting than other modified forms of talus in cold environments. As a result, limited research, use of supposed relict examples and assumed formative mechanisms led to the misidentification of ramparts, circular arguments regarding genesis and inappropriate palaeo-environmental inferences. Several advances have, however, been made in the past few decades, particularly where actively-forming ramparts have been studied. Thus, this paper provides a review of research on pronival ramparts. In particular, focus is placed on the advances made in our understanding of rampart genesis, identification (diagnostic criteria) and palaeoenvironmental significance. Notable advances include the development of a retrogressive model of rampart genesis to supplement the conventional downslope model of development, revised diagnostic criteria for field identification and the use of calibration equations during Schmidt-hammer exposure dating of pronival rampart. The use of pronival ramparts as palaeo-environmental indicators is also examined to determine what relict examples of these landforms may reveal about past climates. en
dc.language.iso en en
dc.publisher SAGE en
dc.rights © 2016 The Author
dc.subject Pronival rampart en
dc.subject Protalus rampart en
dc.subject Snowbed en
dc.subject Snow en
dc.subject Genesis en
dc.subject Diagnostic criteria en
dc.subject Palaeo-environmental significance en
dc.title Pronival ramparts: A review en
dc.type Article en
dc.description.department Geography en

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