Identification

Title

Bowland Shale dataset: field and sample photographs, sample descriptions, microphotographs, x-ray fluorescence, LECO elemental analysis, x-ray diffraction and RockEval pyrolysis from Hind Clough, MHD4 and Cominco S9 (NERC grant NE/L002493/1)

Abstract

The data were produced by Joe Emmings, NERC-funded PhD student at the University of Leicester and British Geological Survey, between 2014 and 2017. Authors of these data: Joe Emmings a, b; Sarah Davies a; Christopher Vane b; Melanie Leng b, c; Vicky Moss-Hayes b; Michael Stephenson b a School of Geography, Geology and the Environment, University of Leicester, University Road, Leicester, LE1 7RH, UK. b British Geological Survey, Keyworth, Nottingham, NG12 5GG, UK. c School of Biosciences, Centre for Environmental Geochemistry, University of Nottingham, Sutton Bonington Campus, Leicestershire LE12 5RD, UK. Data include: 1) A range of photographs from the outcrop Hind Clough and boreholes MHD4 and Cominco S9, sample photographs, thin section scans, microphotographs (transmitted light and scanning electron microscopy) and hand specimen descriptions; 2) The results of 100 analyses from the outcrop Hind Clough and boreholes MHD4 and Cominco S9; x-ray fluorescence major and trace element concentrations, RockEval pyrolysis measurements, x-ray diffraction traces and LECO elemental C and S data. These data were interpreted together with 20 drill-core samples previously acquired from Hind Clough ('HC01' prefix). See http://dx.doi.org/10.5285/c39a32b2-1a30-4426-8389-2fae21ec60ad for further information regarding this drill-core dataset. Acknowledgements: This study was funded by NERC grant NE/L002493/1, a part of the Central England Training Alliance (CENTA). This study also received CASE funding from the BGS. Nick Riley (Carboniferous Ltd) is thanked for sharing his expertise, particularly regarding the field identification of marine faunas. Charlotte Watts is thanked for providing field assistance. Nick Marsh, Tom Knott and Cheryl Haidon are thanked for providing expertise and assistance during inorganic geochemical and mineralogical analyses.

Resource type

dataset

Resource locator

http://www.bgs.ac.uk/services/ngdc/accessions/index.html#item79769

function: download

http://www.bgs.ac.uk/services/ngdc/citedData/catalogue/9ceadcad-a93c-4bab-8ca1-07b0de2c5ed0.html

function: information

Unique resource identifier

code

http://data.bgs.ac.uk/id/dataHolding/13607205

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

GEMET - INSPIRE themes

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

Geochemistry

Shale

Sedimentary geology

originating controlled vocabulary

title

BGS Thesaurus of Geosciences

reference date

date type

revision

effective date

2011

Keyword set

keyword value

NERC_DDC

Geographic location

West bounding longitude

-2.5500

East bounding longitude

-2.2000

North bounding latitude

54.0700

South bounding latitude

53.9100

Extent

Extent group

authority code

title

British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus

reference date

date type

creation

effective date

1979

code identifying the extent

LANCASHIRE [id=154200]

Temporal reference

Temporal extent

Begin position

2015-02-27

End position

2017-05-13

Dataset reference date

date type

creation

effective date

2017-10-06

Frequency of update

notApplicable

Quality and validity

Lineage

Three positions in the Craven Basin were selected for analysis; outcrop Hind Clough (grid ref: 364430 453210, British National Grid projection) and boreholes Marl Hill 4 (MHD4) (grid ref: 367426 446752) and Cominco S9 (grid ref: 386010 463500). The stratigraphic framework was based on recognition of ammonoid biozones, enabling correlation. True thicknesses at Hind Clough were estimated using the dip and strike of bedding with an Abney level. 341 samples were collected using hammer and chisel from Hind Clough ('HC02' prefix in dataset), and MHD4 and Cominco S9 core sampled at the British Geological Survey. Samples were cleaned, dry/ wet cut and some surfaces polished depending on sample quality, photographed and described prior to selection of subsamples. 100 homogenised powdered subsamples weighing approximately 10 g were selected for Rock-Eval pyrolysis, XRF and LECO elemental analysis. 74 samples were analysed for mineralogy (phase identification) using XRD. Samples were milled using an agate planetary mill and air-dried at 35 degrees C prior to pyrolysis. 90 ultrathin (20 µm) uncovered and uncoated sections were described using scans and transmitted light, and a subset analysed under scanning electron microscope. These data were interpreted together with 20 drill-core samples previously acquired from Hind Clough (‘HC01’ prefix). See http://dx.doi.org/10.5285/c39a32b2-1a30-4426-8389-2fae21ec60ad for further information regarding this drill-core dataset. 1.1. Organic Analysis Pyrolysis was conducted on finely powdered samples (60 mg subsamples) in a Rock-Eval 6TM apparatus (Vinci Technologies) at the British Geological Survey. Repeat measurements (n=3 to n=4) provide estimates for precision (two sample standard deviations) of less than ± 10 % for S1 and S2 parameters. Accuracy for total organic carbon (TOC) is reported at ± 7 %. 1.2. Elemental Analysis Total carbon (TC) and total sulphur (TS) were determined by analysis using a LECO CS 230 elemental analyser (30 mg subsamples). Accuracy is estimated at ± 5 % for C and ± 15% for S. Typical sample precision is estimated using two standard deviations at ± 3 % for C and ± 8 % for S. XRF data were acquired with a PANalytical Axios Advanced X-Ray Fluorescence spectrometer. Major element concentration was determined on fused beads using default PANalytical SuperQ conditions and trace element concentration was determined on 32 mm diameter pressed powder briquettes. Accuracy is estimated as ± 5 % for major elements and ± 5 % for trace elements. Similarly, precision (sample standard deviation) is typically up to ± 5 % (but commonly ± 1 %) for major elements and of ± 10 % (but commonly ± 5 %) for trace elements. These estimates are based on appropriate reference materials (repeat analyses). The majority of elements were detected in concentrations at least 10 times greater than the lower limit of detection. 1.3. Mineralogical Analysis Whole-rock powder XRD data were collected on a Bruker D8 Advance Powder Diffractometer equipped with a LynxEye Position Sensitive Detector with a Bragg Brentano, flat plate θ-θ geometry using CuKα radiation. Whole-rock data were acquired at a step size of 0.01° 2θ and step time of 0.5 seconds with a scan range from 0° to 135° 2θ. Scanning electron microscopy (SEM) was conducted on uncoated 'ultathin' sections using an S-3600N Hitachi microscope with Oxford INCA 350 EDS used for elemental mapping.

Conformity

Conformity report

specification

title

INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology

reference date

date type

publication

effective date

2011

degree

false

explanation

See the referenced specification

Conformity report

specification

title

Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

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

.txt

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

contact position

Department of Geology

organisation name

University of Leicester

full postal address

Leicester

LE1 7RH

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

2023-05-24

Metadata language

eng