Volcanological data for the Echo Canyon Eruption, Ascension Island, South Atlantic: size, abundance, density, vesicle texture and composition of pumice and lava clasts, collected between 2018 and 2020
| Dataset title | Volcanological data for the Echo Canyon Eruption, Ascension Island, South Atlantic: size, abundance, density, vesicle texture and composition of pumice and lava clasts, collected between 2018 and 2020 |
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| Dataset creators | Bridie V Davies, University of East Anglia |
| Dataset theme | Geoscientific Information |
| Dataset abstract | Compositional and volcanological data from a small-volume explosive-effusive volcanic eruption on Ascension Island, South Atlantic. Multiple samples of pumice and lava spanning the whole eruption sequence were collected from several locations in the area surrounding NE-Bay on Ascension Island. This dataset includes compositional, clast size, abundance, clast density and vesicle texture data for the products of the Echo Canyon eruption. Data was collected between the 12th June 2018 and the 30th August 2020 on Ascension Island and at the University of East Anglia, UK. Compositional data was collected using X-ray fluorescence (XRF), density of pumice clasts using the Archimedes suspension method and textural data by visual inspection of sample vesicle shape and size, all at the University of East Anglia, UK. Clast size and abundance was semi-quantitatively estimated in the field on Ascension Island and later checked against photographs. This data provides a framework through which changes to eruption style were reconstructed and is useful to any persons wishing to study or compare small-volume eruption deposits which record eruptive transitions. The data supports and forms the basis of Davies et al., (2021) (DOI: 10.1007/s00445-021-01480-1) and forms part of B V Davies' Natural Environment Research Council funded PhD project investigating eruption controls on Ascension Island. Bridie V Davies collected and interpreted the data with assistance from Jane H Scarrow and Richard J Brown on Ascension Island, and Jenni Barclay at the University of East Anglia, Bertrand Leze performed XRF on prepared samples. All data collected is included in this resource. |
| Dataset content dates | 12/06/2018 - 30/08/2020 |
| Dataset spatial coverage | Data from Ascension Island, South Atlantic. Collected around NE-Bay and Echo Canyon. Samples for data 1) and data 3) collected from -7.930696, -14.328462 UTM 28S. Observations for data 2) made at -7.930696, -14.328462 and -7.93058, -14.32233 UTM 28S |
| Dataset supply format | MS Excel |
| Dataset language | English-United Kingdom |
| Dataset discovery metadata record | Discovery Link to the dataset's BGS Discovery Metadata record |
| Dataset publisher | NERC EDS National Geoscience Data Centre |
| Dataset publication date | 28th July 2021 |
| Dataset digital object identifier(DOI) | 10.5285/64a60b58-6de5-4909-a321-91ca90bb9251 |
| Dataset citation text | Davies, B.V. (2021): Volcanological data for the Echo Canyon Eruption, Ascension Island, South Atlantic: size, abundance, density, vesicle texture and composition of pumice and lava clasts, collected between 2018 and 2020. NERC EDS National Geoscience Data Centre. (Dataset). https://doi.org/10.5285/64a60b58-6de5-4909-a321-91ca90bb9251 |
| Constraints and terms of use | This data set is available under Open Government Licence, subject to the following acknowledgement accompanying any reproduced materials: "Contains data supplied by permission of the Natural Environment Research Council [YEAR]". |
| Access the dataset | https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item167249 |
| Further information | Research Article: Davies, B.V., Brown, R.J., Barclay, J. et al. Rapid eruptive transitions from low to high intensity explosions and effusive activity: insights from textural analysis of a small-volume trachytic eruption, Ascension Island, South Atlantic. Bull Volcanol 83, 58 (2021). https://doi.org/10.1007/s00445-021-01480-1 |