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Geological data from the Western Afar Margin, East Africa

Geological data from the Western Afar Margin, East Africa
Geological data from the Western Afar Margin, East Africa
This dataset contains geological data from the Western Afar Margin (WAM) in East Africa. These in-clude (reprocessed) earthquake data from previously published surveys and publically accessible databases (Keir et al. 2006, 2009; Ebinger et al 2008; Belachew et al. 2011; Illsley-Kemp et al. 2018a, b and the GCMT Project 2019), which form the basis for Seismic Moment Release (SMR) mapping as well as and tectonic stress analysis, revealing the location and intensity of ongoing deformation, as well as the direction of current extension, respectively. In addition, we present various large-scale maps of the WAM, depicting faults, dikes and sedimentary basins as interpreted from topographic indicators. Field data (GPS locations, fault measurements, field book), acquired during two field campaigns in Ethiopia and Eritrea are included, as well as the kinematic interpretation of the field data using Wintensor software (Delvaux & Sperner 2003). These results are combined with previously published kinematic data from Eritrea and Ethiopia (i.e. the northernmost and southern segments of the WAM, studied by Chorowicz et al. 1999 and Sani et al. 2017), yielding the first coherent overview of (current) tectonic deformation covering the whole margin. Note that we also provide a field book with detailed descriptions of every outcrop, including photographs. Finally, we include unique borehole data from the Kobo graben area, based on well logs from irrigation projects kindly provided to us by local geologists during the Ethiopian field campaign (see section 2.5 and the acknowledgements) . Applications and interpretation of the data provided in this dataset can be found in Zwaan et al. (in review). For more description please refer to the data description. This data publication consists of 90 files: (digital) maps, GPS locations, tables, text and Wintensor files. A detailed overview of all files within this dataset is given in the List of Files.
GFZ Data Services
Zwaan, Frank
25329ca2-014b-4cb9-9ef3-3b8a4259c675
Corti, Giacomo
dce88b12-5b7a-43b1-8a58-5bd1bc13634c
Keir, Derek
5616f81f-bf1b-4678-a167-3160b5647c65
Sani, Federico
6c59b4c4-ecca-4ecc-ba2c-66efa5e5e3df
Muluneh, Ameha
9c48408f-650f-49ad-9133-bc201fa817ce
Illsley-Kemp, Finnigan
c24ef4cb-cbf9-4a58-af8d-da9c7eabd84d
Papini, Mauro
1f3c530a-7a26-435a-bc21-45b3bcb14d46
Zwaan, Frank
25329ca2-014b-4cb9-9ef3-3b8a4259c675
Corti, Giacomo
dce88b12-5b7a-43b1-8a58-5bd1bc13634c
Keir, Derek
5616f81f-bf1b-4678-a167-3160b5647c65
Sani, Federico
6c59b4c4-ecca-4ecc-ba2c-66efa5e5e3df
Muluneh, Ameha
9c48408f-650f-49ad-9133-bc201fa817ce
Illsley-Kemp, Finnigan
c24ef4cb-cbf9-4a58-af8d-da9c7eabd84d
Papini, Mauro
1f3c530a-7a26-435a-bc21-45b3bcb14d46

(2020) Geological data from the Western Afar Margin, East Africa. GFZ Data Services doi:10.5880/fidgeo.2020.017 [Dataset]

Record type: Dataset

Abstract

This dataset contains geological data from the Western Afar Margin (WAM) in East Africa. These in-clude (reprocessed) earthquake data from previously published surveys and publically accessible databases (Keir et al. 2006, 2009; Ebinger et al 2008; Belachew et al. 2011; Illsley-Kemp et al. 2018a, b and the GCMT Project 2019), which form the basis for Seismic Moment Release (SMR) mapping as well as and tectonic stress analysis, revealing the location and intensity of ongoing deformation, as well as the direction of current extension, respectively. In addition, we present various large-scale maps of the WAM, depicting faults, dikes and sedimentary basins as interpreted from topographic indicators. Field data (GPS locations, fault measurements, field book), acquired during two field campaigns in Ethiopia and Eritrea are included, as well as the kinematic interpretation of the field data using Wintensor software (Delvaux & Sperner 2003). These results are combined with previously published kinematic data from Eritrea and Ethiopia (i.e. the northernmost and southern segments of the WAM, studied by Chorowicz et al. 1999 and Sani et al. 2017), yielding the first coherent overview of (current) tectonic deformation covering the whole margin. Note that we also provide a field book with detailed descriptions of every outcrop, including photographs. Finally, we include unique borehole data from the Kobo graben area, based on well logs from irrigation projects kindly provided to us by local geologists during the Ethiopian field campaign (see section 2.5 and the acknowledgements) . Applications and interpretation of the data provided in this dataset can be found in Zwaan et al. (in review). For more description please refer to the data description. This data publication consists of 90 files: (digital) maps, GPS locations, tables, text and Wintensor files. A detailed overview of all files within this dataset is given in the List of Files.

This record has no associated files available for download.

More information

Published date: 1 January 2020

Identifiers

Local EPrints ID: 446326
URI: http://eprints.soton.ac.uk/id/eprint/446326
PURE UUID: 2efc13a5-573d-4051-98c0-d46142dbc282
ORCID for Derek Keir: ORCID iD orcid.org/0000-0001-8787-8446
ORCID for Finnigan Illsley-Kemp: ORCID iD orcid.org/0000-0002-7114-033X

Catalogue record

Date deposited: 04 Feb 2021 17:30
Last modified: 18 Feb 2021 17:16

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Contributors

Contributor: Frank Zwaan
Contributor: Giacomo Corti
Contributor: Derek Keir ORCID iD
Contributor: Federico Sani
Contributor: Ameha Muluneh
Contributor: Finnigan Illsley-Kemp ORCID iD
Contributor: Mauro Papini

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