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Landscapes of polyphases glaciation: eastern Hellas Planitia, Mars

Lookup NU author(s): Dr Stephen Brough

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).

Abstract

The mid-latitudes of Mars host numerous ice-related landforms that bear many similarities to terrestrial ice masses. This collection of landforms, termed viscous flow features (VFFs), is composed primarily of H2O ice and shows evidence of viscous deformation. Recent work has hypothesised that VFFs are the diminishing remains of once larger ice masses, formed during one or more previous ice ages, and the landscape therefore records evidence of polyphase glaciation. However, debate persists concerning the former extent and volume of ice, and style of former glaciations. The accompanying map (1:100,000 scale) presents a geomorphic and structural assessment of a glacial landscape in eastern Hellas Planitia, Mars. Here, we present a description of the features identified, comprising four geomorphic units (plains, lobate debris apron, degraded glacial material, and glacier-like form) and 16 structures (craters, moraine-like ridges, flow unit boundaries, arcuate transvers structures, longitudinal surface structures, ring-mold craters, terraces, medial moraine-like ridges, raised textured areas, flow-parallel and flow-transverse lineations, crevasses and crevasse traces, and ridge clusters).

Publication metadata

Author(s): Brough S, Hubbard B, Souness C, Grindrod PM, Davis J

Publication type: Article

Publication status: Published

Journal: Journal of Maps

Year: 2016

Volume: 12

Issue: 3

Pages: 530-542

Online publication date: 04/06/2015

Acceptance date: 30/04/2015

Date deposited: 27/11/2017

ISSN (electronic): 1744-5647

Publisher: Taylor & Francis

URL: http://doi.org/10.1080/17445647.2015.1047907

DOI: 10.1080/17445647.2015.1047907

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