000151660 001__ 151660
000151660 005__ 20251017144625.0
000151660 0247_ $$2doi$$a10.1029/2021JE006900
000151660 0248_ $$2sideral$$a126564
000151660 037__ $$aART-2021-126564
000151660 041__ $$aeng
000151660 100__ $$aNichols C.I.O.
000151660 245__ $$aA Time-Resolved Paleomagnetic Record of Main Group Pallasites: Evidence for a Large-Cored, Thin-Mantled Parent Body
000151660 260__ $$c2021
000151660 5060_ $$aAccess copy available to the general public$$fUnrestricted
000151660 5203_ $$aSeveral paleomagnetic studies have been conducted on five Main Group pallasites: Brenham, Marjalahti, Springwater, Imilac, and Esquel. These pallasites have distinct cooling histories, meaning that their paleomagnetic records may have been acquired at different times during the thermal evolution of their parent body. Here, we compile new and existing data to present the most complete time-resolved paleomagnetic record for a planetesimal, which includes a period of quiescence prior to core solidification as well as dynamo activity generated by compositional convection during core solidification. We present new paleomagnetic data for the Springwater pallasite, which constrains the timing of core solidification. Our results suggest that in order to generate the observed strong paleointensities (~65–95 µT), the pallasites must have been relatively close to the dynamo source. Our thermal and dynamo models predict that the Main Group pallasites originate from a planetesimal with a large core (>200 km) and a thin mantle (<70 km).
000151660 536__ $$9info:eu-repo/grantAgreement/ES/MCINN/MAT2017-83468-R
000151660 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000151660 590__ $$a4.434$$b2021
000151660 591__ $$aGEOCHEMISTRY & GEOPHYSICS$$b19 / 87 = 0.218$$c2021$$dQ1$$eT1
000151660 594__ $$a6.6$$b2021
000151660 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000151660 700__ $$aBryson J.F.J.
000151660 700__ $$aCottrell R.D.
000151660 700__ $$aFu R.R.
000151660 700__ $$aHarrison R.J.
000151660 700__ $$0(orcid)0000-0002-0901-8341$$aHerrero Albillos J.$$uUniversidad de Zaragoza
000151660 700__ $$aKronast F.
000151660 700__ $$aTarduno J.A.
000151660 700__ $$aWeiss B.P.
000151660 7102_ $$15001$$2065$$aUniversidad de Zaragoza$$bDpto. Ciencia Tecnol.Mater.Fl.$$cÁrea Cienc.Mater. Ingen.Metal.
000151660 773__ $$g126, 7 (2021), 006900 [21 pp.]$$pJ. geophys. res. Planets.$$tJOURNAL OF GEOPHYSICAL RESEARCH-PLANETS$$x2169-9097
000151660 8564_ $$s1234366$$uhttps://zaguan.unizar.es/record/151660/files/texto_completo.pdf$$yVersión publicada
000151660 8564_ $$s3253682$$uhttps://zaguan.unizar.es/record/151660/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000151660 909CO $$ooai:zaguan.unizar.es:151660$$particulos$$pdriver
000151660 951__ $$a2025-10-17-14:23:45
000151660 980__ $$aARTICLE