Plasma shielding removes prior magnetization record from impacted rocks near Santa Fe, New Mexico

Abstract The shock exposure of the Santa Fe’s impact structure in New Mexico is evidenced by large human-size shatter cones. We discovered a new magnetic mechanism that allows a magnetic detection of plasma’s presence during the impact processes. Rock fragments from the impactites were once magnetiz...

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Autores principales:	Gunther Kletetschka, Radana Kavkova, Hakan Ucar
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d2cf9f54fa564ab989fad009437abda0
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spelling	oai:doaj.org-article:d2cf9f54fa564ab989fad009437abda02021-11-21T12:16:33ZPlasma shielding removes prior magnetization record from impacted rocks near Santa Fe, New Mexico10.1038/s41598-021-01451-82045-2322https://doaj.org/article/d2cf9f54fa564ab989fad009437abda02021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01451-8https://doaj.org/toc/2045-2322Abstract The shock exposure of the Santa Fe’s impact structure in New Mexico is evidenced by large human-size shatter cones. We discovered a new magnetic mechanism that allows a magnetic detection of plasma’s presence during the impact processes. Rock fragments from the impactites were once magnetized by a geomagnetic field. Our novel approach, based on Neel’s theory, revealed more than an order of magnitude lower magnetizations in the rocks that were exposed to the shockwave. Here we present a support for a newly proposed mechanism where the shock wave appearance can generate magnetic shielding that allow keeping the magnetic grains in a superparamagnetic-like state shortly after the shock’s exposure, and leaves the individual magnetized grains in random orientations, significantly lowering the overall magnetic intensity. Our data not only clarify how an impact process allows for a reduction of magnetic paleointensity but also inspire a new direction of effort to study impact sites, using paleointensity reduction as a new impact proxy.Gunther KletetschkaRadana KavkovaHakan UcarNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Gunther Kletetschka Radana Kavkova Hakan Ucar Plasma shielding removes prior magnetization record from impacted rocks near Santa Fe, New Mexico
description	Abstract The shock exposure of the Santa Fe’s impact structure in New Mexico is evidenced by large human-size shatter cones. We discovered a new magnetic mechanism that allows a magnetic detection of plasma’s presence during the impact processes. Rock fragments from the impactites were once magnetized by a geomagnetic field. Our novel approach, based on Neel’s theory, revealed more than an order of magnitude lower magnetizations in the rocks that were exposed to the shockwave. Here we present a support for a newly proposed mechanism where the shock wave appearance can generate magnetic shielding that allow keeping the magnetic grains in a superparamagnetic-like state shortly after the shock’s exposure, and leaves the individual magnetized grains in random orientations, significantly lowering the overall magnetic intensity. Our data not only clarify how an impact process allows for a reduction of magnetic paleointensity but also inspire a new direction of effort to study impact sites, using paleointensity reduction as a new impact proxy.
format	article
author	Gunther Kletetschka Radana Kavkova Hakan Ucar
author_facet	Gunther Kletetschka Radana Kavkova Hakan Ucar
author_sort	Gunther Kletetschka
title	Plasma shielding removes prior magnetization record from impacted rocks near Santa Fe, New Mexico
title_short	Plasma shielding removes prior magnetization record from impacted rocks near Santa Fe, New Mexico
title_full	Plasma shielding removes prior magnetization record from impacted rocks near Santa Fe, New Mexico
title_fullStr	Plasma shielding removes prior magnetization record from impacted rocks near Santa Fe, New Mexico
title_full_unstemmed	Plasma shielding removes prior magnetization record from impacted rocks near Santa Fe, New Mexico
title_sort	plasma shielding removes prior magnetization record from impacted rocks near santa fe, new mexico
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d2cf9f54fa564ab989fad009437abda0
work_keys_str_mv	AT guntherkletetschka plasmashieldingremovespriormagnetizationrecordfromimpactedrocksnearsantafenewmexico AT radanakavkova plasmashieldingremovespriormagnetizationrecordfromimpactedrocksnearsantafenewmexico AT hakanucar plasmashieldingremovespriormagnetizationrecordfromimpactedrocksnearsantafenewmexico
_version_	1718419151689613312

Plasma shielding removes prior magnetization record from impacted rocks near Santa Fe, New Mexico

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