Identification

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 (NERC Grant NE/L002582/1)

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.

Resource type

dataset

Resource locator

https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item167249

name: Data

function: download

https://doi.org/10.5285/64a60b58-6de5-4909-a321-91ca90bb9251

name: Digital Object Identifier (DOI)

function: information

Unique resource identifier

code

http://data.bgs.ac.uk/id/dataHolding/13607790

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

Trachyte

NGDC Deposited Data

Pumice

Volcanic eruption

originating controlled vocabulary

title

reference date

date type

revision

effective date

2022

Keyword set

keyword value

Keyword set

keyword value

NERC_DDC

Geographic location

West bounding longitude

-14.3200

East bounding longitude

-14.3200

North bounding latitude

-7.9300

South bounding latitude

-7.9300

Extent

Extent group

authority code

title

reference date

date type

creation

effective date

1979

code identifying the extent

ASCENSION ISLAND [id=913500]

Temporal reference

Temporal extent

Begin position

2018-06-12

End position

2020-08-30

Dataset reference date

date type

creation

effective date

2021-07-26

Frequency of update

notApplicable

Quality and validity

Lineage

1) data obtained by X-ray fluorescence at the Univeristy of East Anglia, UK. 2) Data collected by Bridie V Davies using field observations of deposits in outcrop. Estimated mean and modal clase size (not using seiving). 3) Density data collected using the suspension method based on the Archimedes principle as outlined in Houghton and Wilson (1989) and Shea et al., (2010) 4) Proportions of pumice clasts in each of five textural groups identified within the units.

Conformity

Conformity report

specification

title

reference date

date type

publication

effective date

2011

degree

false

explanation

See the referenced specification

Conformity report

specification

title

reference date

date type

publication

effective date

2010-12-08

degree

false

explanation

See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF

Data format

name of format

MS Excel

version of format

Constraints related to access and use

Constraint set

Limitations on public access

Constraint set

Limitations on public access

The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.

Responsible organisations

Responsible party

organisation name

University of East Anglia

full postal address

School of Environmental Sciences, , University of East Anglia, Norwich Research Park

Norwich

NR4 7TJ

email address

not available

responsible party role

originator

Responsible party

organisation name

British Geological Survey

email address

not available

responsible party role

distributor

Responsible party

organisation name

British Geological Survey

email address

not available

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

organisation name

British Geological Survey

full postal address

Environmental Science Centre,Keyworth

NOTTINGHAM

NG12 5GG

United Kingdom

telephone number

+44 115 936 3100

email address

enquiries@bgs.ac.uk

responsible party role

pointOfContact

Metadata date

2025-03-03

Metadata language