Determining physical and mechanical volcanic rock properties via reflectance spectroscopy

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dc.citation.volume420
dc.contributor.authorSchaefer LN
dc.contributor.authorKereszturi G
dc.contributor.authorVilleneuve M
dc.contributor.authorKennedy B
dc.date.accessioned2024-10-23T20:17:44Z
dc.date.available2024-10-23T20:17:44Z
dc.date.issued2021-12
dc.description.abstractThere are currently no reliable methods to determine rock physical and mechanical properties that are not labor or resource intensive, especially at the scale of volcanoes. Using mineralogical-physical-mechanical relationships, we suggest it is possible to derive rock properties from rapid, non-invasive reflectance spectroscopy measurements. To demonstrate this potential, we correlate the physical and mechanical properties of variously altered andesitic volcanic rocks to laboratory reflectance spectroscopy using statistical analysis. Several rock properties, including density, connected porosity, strength, magnetic susceptibility, and elasticity, correlate with reflectance spectroscopy in both the visible and short-wave infrared parts of the electromagnetic spectrum. We attribute these correlations to the presence and degradation (i.e. weathering or hydrothermal alteration) of iron-bearing minerals such as pyroxene, magnetite, and pyrite, which reflect changes to both rock properties and reflectance spectroscopy measurements. Results support the use of transfer functions to estimate rock properties directly from reflectance spectroscopy. Ultimately, aerial or satellite imaging spectroscopy could be used to create geotechnical maps at volcano scale
dc.description.confidentialfalse
dc.edition.editionDecember 2021
dc.identifier.author-urlhttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000733383400008&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=c5bb3b2499afac691c2e3c1a83ef6fef
dc.identifier.citationSchaefer LN, Kereszturi G, Villeneuve M, Kennedy B. (2021). Determining physical and mechanical volcanic rock properties via reflectance spectroscopy. Journal of Volcanology and Geothermal Research. 420.
dc.identifier.doi10.1016/j.jvolgeores.2021.107393
dc.identifier.eissn1872-6097
dc.identifier.elements-typejournal-article
dc.identifier.issn0377-0273
dc.identifier.numberARTN 107393
dc.identifier.piiS0377027321002225
dc.identifier.urihttps://mro.massey.ac.nz/handle/10179/71835
dc.languageEnglish
dc.publisherElsevier B V
dc.publisher.urihttps://www.sciencedirect.com/science/article/pii/S0377027321002225
dc.relation.isPartOfJournal of Volcanology and Geothermal Research
dc.rights(c) The author/sen
dc.rights.licenseCC BYen
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectTransfer function
dc.subjectAndesite
dc.subjectHydrothermal alteration
dc.subjectWeathering
dc.subjectIron-bearing mineral phases
dc.subjectClay
dc.subjectShort wave infrared
dc.subjectVisible spectrum
dc.subjectReflectance spectroscopy
dc.titleDetermining physical and mechanical volcanic rock properties via reflectance spectroscopy
dc.typeJournal article
pubs.elements-id448714
pubs.organisational-groupOther
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