Magnetism of speleothems
Magnetismo degli Speleotemi
Staff
- Zanella Elena (Coordinator)
- Tema Evdokia (Member)
Contacts
ERC Sectors
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.
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