Low-Temperature Magnetic Properties and Magnetic Mineralogy of the Ropruchey Sill (Russian Karelia)

Andrei Kosterov, Elena S. Sergienko, Petr V. Kharitonskii, Svetlana Yu. Yanson, Irina A. Vasilieva

Research output

Abstract

We report low-temperature magnetic properties of predominantly mafic rocks from the Mesoproterozoic Ropruchey sill, Karelia. Based on microscopic observations, the studied rocks can be classified into two groups, granodiorites and gabbro-diorites, with different magnetic mineralogy. In granodiorites, the only magnetic mineral is stoichiometric magnetite characterized by a Verwey transition temperature of 120–121 K. In gabbro-diorites, the magnetic mineralogy is also dominated by magnetite, which however contains 2–3% of Ti substitution atoms, lowering the Verwey transition temperature to 94–103 K. In addition, the gabbro-diorites appear to contain some amount of a more Ti-rich titanomagnetite, as well as another, yet unidentified magnetic phase, manifesting itself by a peculiar temperature and frequency-dependent behavior of magnetic susceptibility.
Original languageEnglish
Title of host publicationRecent Advances in Rock Magnetism, Environmental Magnetism and Paleomagnetism
Subtitle of host publicationInternational Conference on Geomagnetism, Paleomagnetism and Rock Magnetism (Kazan, Russia)
EditorsD.K. Nurgaliev, V.P. Shcherbakov, A. Kosterov, S. Spassov
Place of PublicationCham
PublisherSpringer Nature
Chapter16
Pages205-223
ISBN (Electronic)9783319904375
ISBN (Print)9783319904368
DOIs
Publication statusPublished - 2019

Publication series

NameSpringer Geophysics

Fingerprint Dive into the research topics of 'Low-Temperature Magnetic Properties and Magnetic Mineralogy of the Ropruchey Sill (Russian Karelia)'. Together they form a unique fingerprint.

Cite this