IDENTIFICATION AND VALUATION OF PARAMAGNETIC RADICALS IN NATURAL DOLOMITES AS AN INDICATOR OF GEOLOGICAL EVENTS

dc.contributor.author	Franco R.W.A.
dc.contributor.author	Pelegrini F.
dc.contributor.author	Rossi A.M.
dc.date.accessioned	2022-02-10T07:21:53Z
dc.date.available	2022-02-10T07:21:53Z
dc.date.issued	2003
dc.identifier	https://elibrary.ru/item.asp?id=1386111
dc.identifier.citation	Physics and Chemistry of Minerals, 2003, 30, 1, 39-43
dc.identifier.issn	0342-1791
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/35172
dc.description.abstract	Geological sedimentary dolomite samples from the Superior Proterozoic are studied using electron paramagnetic resonance (EPR) spectroscopy. The complex spectra in the g=2.0 region is composed of Mn2+ lines and signals due to crystallization and radiation-induced defects. Measurements in microwave frequencies of 9.5 GHz (X-band) and 35 GHz (Q-band), and thermal and/or radiation treatments allowed identification of seven paramagnetic radicals in the g=2.0 region: (1) isotropic organic radical; (2) axial SO2-; (3) axial PO20 or PO22-; (4) isotropic CO2-; (5) axial CO2-; (6) axial CO33-; (7) isotropic unknown line. The use of these paramagnetic centres as indicators of geological events is discussed.
dc.subject	DOLOMITE
dc.subject	EPR
dc.subject	GAMMA RADIATION
dc.subject	DEFECTS
dc.subject	Proterozoic
dc.title	IDENTIFICATION AND VALUATION OF PARAMAGNETIC RADICALS IN NATURAL DOLOMITES AS AN INDICATOR OF GEOLOGICAL EVENTS
dc.type	Статья
dc.subject.age	Precambrian::Proterozoic
dc.subject.age	Докембрий::Протерозой	ru

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