Date ( Creation )

2018-06-26

Identifier

http://data.bgs.ac.uk/id/dataHolding/13607346

Maintenance and update frequency

notApplicable notApplicable

GEMET - INSPIRE themes

• Geology

BGS Thesaurus of Geosciences

• Lamination , Pleistocene , Speleothems

Keywords

• NERC_DDC

Access constraints

otherRestrictions Other restrictions

Use constraints

otherRestrictions Other restrictions

Other constraints

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.

Other constraints

Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"

Metadata language

English English

Topic category

• Geoscientific information

Geographic identifier

SOUTH AFRICA [id=670000]

 

Date ( Creation )

1979

Geographic identifier

ZA

 

Date ( Revision )

2009

Geographic identifier

ZAF

 

Date ( Revision )

2009

Distribution format

• Text file ()

OnLine resource

http://www.bgs.ac.uk/services/ngdc/accessions/index.html#item111329  

Hierarchy level

dataset Dataset

Other

dataset

Statement

Speleothems were imaged on a Leica SP2 confocal microscope using an oil immersion objective lens. Individual images of 1024 x 1024 pixels at 2x zoom were acquired over the entire length of the speleothems by 3 microscope fields in the y axis. The Leica LCS software automatically stitched all the image frames to produce a montage of both samples. Laser excitation wavelengths of 488 nm and 515 nm were used to detect the autofluorescence of the organic matter with emission detection set to 540 – 680 nm; pixel resolution was 0.183 µm. Greyscale line profiles were produced for each photomosaic using the image processing software ImageJ and imported into Matlab. The laminae were measured and counted using the automated peak-counting algorithm of Smith et al. (2009). Age models were produced using a combination of magnetostratigraphy, orbital tuning and U-Th dating (see Hopley et al., 2018).

gmd:MD_Metadata

File identifier

6f9e75e7-993e-620d-e054-002128a47908   XML

Metadata language

English English

Hierarchy level

dataset Dataset

Date stamp

2021-10-23

Metadata standard version

2.3

Dataset URI

http://data.bgs.ac.uk/id/dataHolding/13607346