Separation of ferromagnetic components by analyzing the hysteresis loops of remanent magnetization

Autor:	Lina Kosareva, E. V. Utemov, P. G. Yasonov, Victor Kosarev, Valera P. Shcherbakov, Danis K. Nurgaliev
Rok vydání:	2015
Předmět:	Greigite Magnetotactic bacteria Mineralogy Coercivity Magnetization chemistry.chemical_compound Hysteresis chemistry Ferromagnetism Remanence General Earth and Planetary Sciences Geology General Environmental Science Magnetite
Zdroj:	Izvestiya, Physics of the Solid Earth. 51:689-708
ISSN:	1555-6506 1069-3513
Popis:	The new method is suggested for separating ferromagnetic components in sediments through analyzing the coercivity spectra of the samples by the continuous wavelet transform with the Gaussian-based wavelet (MHAT). A total of 1056 samples of Lake Khuvsgul’s sediments (Mongolia) are studied. At least four groups of magnetic components are identified based on the analysis of their magnetization and remagnetization curves. Almost all samples are found to contain two components of bacterial origin which are represented by the assemblages of the interacting single-domain grains and differ by the grain compositions (magnetite and greigite). The applicability of the magnetic data for diagnosing magnetotactic bacteria in sediments and building paleoecological and paleoclimatic reconstructions is demonstrated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2ff4c39b8add22f1657782d3a935e70b https://doi.org/10.1134/s1069351315050079 Zobrazit plný text záznamu Full text from SpringerLink