Supporting information for ''Polyphase mid-latitude glaciation on Mars: chronology of the formation of superposed glacier-like forms from crater-count dating'' 

A.J.Hepburn (1,2,*), F.S.L.Ng (2,*), S.J.Livingstone (2), T.O.Holt (1), B.Hubbard (1)


1): Department of Geography and Earth Sciences, Aberystwyth University, Aberystwyth, SY23 3DB, UK

2): Department of Geography, University of Sheffield, Sheffield, S10 2TN, UK

Corresponding authors (*): 
adh28@aber.ac.uk
f.ng@sheffield.ac.uk 


Contained within this folder are shapefiles, and data tables derived from Hepburn et al 20XX




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SGLF_global.shp

ESRI standard shapefile format

The boundaries for all 320 superposed glacier-like forms (SGLFs) described in this study, all projected to the Mars2000 equicylindircal projection system. 

The field 'Sinu_area' lists the area (km^2) of each SGLF derived from a sinusoidal projection system of these polygons.

The field 'Glob_ID' refers to each unique SGLF idea, as listed in table1.xlsx (this repository).

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Craters.shp 

ESRI standard shapefile

The diameter of all craters mapped in this study, on both SGLFs and their underlying VFFs. Projection system is 'SimpleCylindrical_Mars'


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Data_file_S1.xlsx

Excel file listing the inventory of SGLFs and their morphometric characteristics  



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Data_File_S2.xlsx

Excel file listing the counting area and crater counts in different crater diameter bins on each SGLF aggregate (Sheet 1) and its underlying VFF (Sheet 2).