Development of clumped isotope techniques and their application to palaeoclimate studies

Kirk, Ruth (2017) Development of clumped isotope techniques and their application to palaeoclimate studies. Doctoral thesis, University of East Anglia.

[img]
Preview
PDF
Download (6MB) | Preview

Abstract

The aims of this research were to firstly help development of clumped isotope measurements of carbonate samples at UEA, and to then explore whether the technique could be used to retrieve robust environmental signals from geological material. This specifically looks at the Hirnantian glaciation at the boundary between the Ordovician and Silurian periods. Using the MIRA instrument, it is possible to make high precision measurements to enable the assessment of Earth surface temperatures. Long term precision of standard material is comparable to existing studies. MIRA is also absent of any non-linearity issues. Removal of contaminants and the identification of samples displaying contamination is stringent, as we find contamination has a serious effect on the Δ47 signal.
Using modern biogenic carbonates and controlled temperature precipitates, the relationship between the clumped isotope signatures represented by the Δ47 value and temperature is: Δ47(

Item Type: Thesis (Doctoral)
Faculty \ School: Faculty of Science > School of Environmental Sciences
Depositing User: Katie Miller
Date Deposited: 06 Jun 2017 13:20
Last Modified: 06 Jun 2017 13:20
URI: https://ueaeprints.uea.ac.uk/id/eprint/63690
DOI:

Actions (login required)

View Item View Item