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oa Soil mineral magnetism of the Rubaniv gas field (Carpathian Foredeep, Ukraine)
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Geoinformatics, May 2021, Volume 2021, p.1 - 6
Abstract
Magnetic method is effective, rapid, and cheap technology in the geophysical studying of hydrocarbon fields. The present study related to the investigation of the Rubaniv gas field in the Outer zone of the Carpathian Foredeep. Our previous results demonstrated the close dependence of the local anomalous magnetic field upon gas deposit of Rubaniv field, soil magnetic susceptibility of the genetic horizons, and possible gas microseepage. New results are concentrated in magnetic mineralogy of soils from the areas of hydrocarbons impact as well as natural patches. The genesis of soil mineral magnetism deals with iron oxides, hydroxides, and sulphides. We identified natural magnetite, hematite, goethite, maghemite and paramagnetics formation in both soils from the hydrocarbon impacted areas as well as from the natural forest area. The hydrocarbon genesis of the soil magnetics within oil and gas fields suggested by the presence of iron sulphides, oxidation of pyrite, transformation of the antiferromagnetic hexagonal pyrrhotite into ferromagnetic monoclinic pyrrhotite.