DBPapers
DOI: 10.5593/SGEM2014/B11/S1.005

CONTACT ZONE GYPSUM - CARBONATE SEDIMENTS BY ELECTRON PARAMAGNETIC RESONANCE

N. M. Khasanova, N. M. Nizamutdinov, R. A. Khasanov, R. I. Salimov
Wednesday 1 October 2014 by Libadmin2014

References: References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-07-0 / ISSN 1314-2704, June 19-25, 2014, Book 1, Vol. 1, 35-42 pp

ABSTRACT
The purpose of this work is to study geochemical features in the contact zone of gypsum - carbonate deposits by the electron paramagnetic resonance (EPR) method on the example of the typical core samples Syukeevskogo field. Choosing the annealing temperature of 350, 600 and 950 0C is associated with decomposition of organic matter and carbonates. Five different kind contact zones of gypsum-carbonate strata Syukeevskogo field along the borehole were selected. Quantitative changes of the EPR parameters: Mn2+, Fe3+, Cr3+,  and radicals caused by thermochemical effects on the rock and organic matter are presented in the diagram forms. Geochemical features installed in the contact zones such as a manganese increase in the newly formed calcite,a decrease  in sample oil-saturated, a reason of calcium excess or magnesium deficiency at increase alpha are discussed.

Keywords:EPR, gypsum, dolomite, calcite, thermal annealing

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