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Magnetism of speleothems

Magnetismo degli Speleotemi

Staff

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ERC Sectors

PE10_6 - Paleoclimatology, paleoecology
PE10_15 - Geomagnetism, paleomagnetism

Activity

Speleothems are natural archives, and they can provide unique information about the past geomagnetic field and its relationship to paleoenvironment. They offer continuous, precisely dated and high-resolution magnetic records that contribute to the investigation of the fine-scale temporal evolution of sub-millennial to centennial geomagnetic events (Fig. 1 – flowstone of the Rio Martino Cave, Northern Alps) as well as to the identification of long-term variations such as magnetic reversals.
Speleothem magnetism studies the origin, relative concentration and grain-size of the magnetic minerals incorporated in the speleothems during their formation, tracking the environmental processes and the past environmental conditions that affect the sediment-magnetic record. Such natural archives have the potential of yielding high resolution reconstructions of regional and local climatic and pedogenetic histories. The magnetic record, moreover, can be directly compared to temperature and precipitation reconstructions based on isotopic and trace elements compositions from the same specimens.

upload_Magnetismo_Speleotemi_Fig1.JPG

 

Main Collaborations

Dr. Ilaria Isola, Istituto Geoscienze e Georisorse, CNR, Pisa

Dr. Luca Lanci, Dipartimento di Fisica, Università di Urbino

Dr. Eleonora Regattieri, Dr Gianni Zanchetta, Dipartimento di Scienze Geologiche, Università di Pisa

Dr. Sara Satolli, Dipartimento di Geologia e Ingegneria, Università di Chieti-Pescara

Publications

  • Isola, I., Mazzarini, F., Molli G., Piccini, L., Zanella, E., Zanchetta, G., Drysdale, R.N., Hellstrom, J., Woodhead, J., Roncioni, A., Milazzo, F., Pieruccioni, D., Regattieri, E., 2021. New chronological constraints from hypogean deposits for late Pliocene to Recent morphotectonic history of the Alpi Apuane (NW Tuscany, Italy), Geosciences, 11, 65, https://doi.org/10.3390/geosciences11020065

Regattieri, E., Querci, S., Zanchetta, G., Zanella, E., Isola, I., Drysdale, R.N., Hellstrom, J.C., Magrì, F., 2021. Interstadial condition over the Southern Alps during the early penultimate glacial (MIS 6): the multiproxy record from Rio Martino Cave (Italy). Quaternary Science Review, 257, 106856, https://doi.org/10.1016/j.quascirev.2021.106856

Regattieri, E., Zanchetta, G., Isola, I., Zanella, E., Drysdale, R., Hellstrom, J., Zerboni, A., Dallai, L., Tema, E., Lanci, L., Costa, E., Magrì, F., 2019. Holocene Critical Zone dynamics in an Alpine catchment inferred from a speleothem multiproxy record: disentangling climate and human influences. Scientific Reports, Scientific Reports, 9, 17829, https://doi.org/10.1038/s41598-019-53583-7

Zanella, E., Tema, E., Lanci, L., Regattieri, E., Isola, I., Hellstrom, J.C., Costa, E., Zanchetta, G., Drysdale, R.N., Magrì, F., 2018. A 10,000 yr record of high-resolution Paleosecular Variation from a flowstone of Rio Martino Cave, Northwestern Alps, Italy. Earth Planetary Science Letters, 485, 32-420, https://doi:10.1016/j.epsl.2017.12.047

Tag: speleothem, magnetism, paleoenvironment, University, Zanella, Tema, Geophysics

Last update: 14/04/2021 13:41
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