READ ME File For Dataset to support the article'Major elements, petrography, and morphometrics of Alu-Dalafilla and Borale volcanoes in Afar'

Dataset DOI: 10.5258/SOTON/D1531

Date that the file was created: April, 2022

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GENERAL INFORMATION
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ReadMe Author: Watts,Emma University of Southampton [000000016823395X]

Date of data collection:1st October 2019 - 1st September 2020

Information about geographic location of data collection: 14°N 40.4°E, 14°N 40.8°E, 13.6°N 40.4°E, 13.6°N 40.8°E


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SHARING/ACCESS INFORMATION
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Licenses/restrictions placed on the data, or limitations of reuse: CC-BY

Recommended citation for the data:

This dataset supports the publication:
AUTHORS: Emma J. Watts, Thomas M. Gernon, Rex Taylor, Derek Keir, Melanie Siegburg, Jasmin Jarman, Carolina Pagli, Anna Gioncada
TITLE:Evolution of the Alu-Dalafilla and Borale Volcanoes, Afar, Ethiopia
JOURNAL:Journal of Volcanology and Geothermal research
PAPER DOI IF KNOWN:10.1016/j.jvolgeores.2020.107094


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DATA & FILE OVERVIEW
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This dataset contains: 

Petrography :Sheet contains 30 samples, and the quantified values of the phenocrysts, groundmass, alteration material, vesicles and void space present (given as a percentage). Void space is defined as a gap in the thin section which is not characteristic of a vesicle.
 
Major elements: Sheet contains 30 samples (with their longitude and latitude) and their whole rock major element geochemistry (in wt %). 

Lava areas: Sheet shows the area of each lava flow with a phase, and their summed value to give a combined area covered in each phase and stage.
 
Lava Thickness Volume: Sheet contains the area, and measured thicknesses (m) for each phase. The thicknesses were averaged and then a simple calculation was then used (volume = area x thickness) to calculate the volume of the phase.

Faults:	Sheet contains all fault lengths mapped within the region of Borale and puts them in 2 groups based on their characterisitics (Curvilinear faults and orthogonal to curvilinear faults). The average length for each group is then calculated. The object ID an individual number given to each fault during the mapping.

In all sheets the phrases Stage (1-4) and Phase (A-O) are used. This is so they relate to a relative chronology. With 1 being the oldest stage and 4 the youngest. Stages are as follows: (1) Rift floor basalts, (2) Fissure basalts around Alu-Dalafilla, (3) Alu-Dalafilla and Borale edifices, (4) Rejuvenated fissures around Alu-Dalafilla. The eruption phases given are a subset within the stages.