Identification

Title

Carbon dioxide flux and isotopic composition from sedimentary rock weathering, Waiapu River catchment, New Zealand

Abstract

These data were collected to study oxidative weathering processes in the Waiapu River catchment, New Zealand, with potential carbon release sourced from the oxidation of petrogenic organic carbon or carbonate dissolution coupled to the oxidation of sulfide minerals. There, in mudstones exposed in a highly erosive gully complex, in situ CO2 emissions were measured with drilled gas accumulation chambers following the design by Soulet et al. (2018, Biogeosciences 15, 4087-4102, https://doi.org/10.5194/bg-15-4087-2018). Temporal and spatial variability in CO2 flux can be put in context with environmental changes (e.g., temperature and hydrology). For this, CO2 release from 5 different chambers, which were installed over a transect of ~ 10 m length in a gully above a nearby streambed, was measured several times over a short study period (circa one week). In addition, the gaseous CO2 storage (partial pressure) in the shallow weathering zone was measured prior to a CO2 flux measurement. To understand the source of CO2, gas samples were collected and their stable and radioactive carbon isotope compositions determined. In this process, we identified a contaminant, which was associated with the chamber installation, that can be traced in the gas samples that were collected within 4 days following the installation. Details of the subsequent data analysis and interpretation can be found in: Roylands et al. 2022, Chemical Geology: Capturing the short-term variability of carbon dioxide emissions from sedimentary rock weathering in a remote mountainous catchment, New Zealand. This work was supported by the European Research Council (Starting Grant to Robert G. Hilton, ROC-CO2 project, grant 678779).

Resource type

dataset

Resource locator

https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item173494

name: Data

function: download

https://doi.org/10.5285/467fcf54-eb20-4a19-a62d-8867516de87c

name: Digital Object Identifier (DOI)

function: information

https://doi.org/10.1016/j.chemgeo.2022.121024

name: Published Paper

function: information

Unique resource identifier

code

http://data.bgs.ac.uk/id/dataHolding/13607943

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

Carbon isotopes

Carbon dioxide

Sedimentary rocks

Weathering

NGDC Deposited Data

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

178.1900

East bounding longitude

178.2000

North bounding latitude

-37.8500

South bounding latitude

-37.8600

Extent

Extent group

authority code

title

reference date

date type

creation

effective date

1979

code identifying the extent

NEW ZEALAND [id=590000]

Extent group

authority code

title

reference date

date type

revision

effective date

2009

code identifying the extent

NZ

Extent group

authority code

title

reference date

date type

revision

effective date

2009

code identifying the extent

NZL

Temporal reference

Temporal extent

Begin position

2018-04-29

End position

2018-05-05

Dataset reference date

date type

creation

effective date

2022-05-24

Frequency of update

notApplicable

Quality and validity

Lineage

Rock chambers to measure CO2 fluxes were installed following the method of Soulet et al., (2018), Biogeosciences, with each chamber drilled directly into bare mudstones undergoing weathering, using a hand auger. 5 different chambers were installed over a transect of ~ 10 m length in a gully in the Waiapu catchment, New Zealand (37.85986° S, 178.19028° E). CO2 fluxes were measured using an infra-red gas analyser, and a molecular sieve sampling system to trap CO2. Repeatedly measured CO2 fluxes can be compared to changes in environmental conditions, including air and chamber temperatures, rainfall and river flow. Furthermore, the carbon isotopic composition of CO2 was measured by IRMS and AMS for source identification. In this process, a contaminant was identified, which was associated with the chamber installation, that can be traced in the gas samples that were collected within up to 4 days following the installation.

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

IFREMER

email address

not available

responsible party role

originator

Responsible party

organisation name

NERC Radiocarbon Facility

email address

not available

responsible party role

originator

Responsible party

contact position

Professor of Sedimentary Geology

organisation name

University of Oxford

full postal address

Department of Earth Sciences, South Parks Road Oxford

Oxford

OX1 3AN

email address

not available

responsible party role

originator

Responsible party

contact position

Research Postgraduate

organisation name

University of Durham

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

2024-04-04

Metadata language