Sweetwater BaFZn district, eastern Tennessee: a paleomagneticage for dolomitisation from fluid flow

Autor:	David T. A. Symons, S.J. Pannalal, Kula C. Misra
Rok vydání:	2003
Předmět:	geography Paleomagnetism geography.geographical_feature_category Geochemistry and Petrology Ridge Geochemistry Economic Geology Orogeny Geomorphology Geology Early onset
Zdroj:	Journal of Geochemical Exploration. :235-241
ISSN:	0375-6742
Popis:	Paleomagnetic analysis of 382 specimens from 27 sites in the Sweetwater Ba F Zn district in the southern AppalachianValley and Ridge province of eastern Tennessee indicates that peak dolomitisation or recrystallisation of the host rocks occurred during Mississippian time at 334 ± 8 Ma. This age is coeval with the 334 ± 14 Ma paleomagnetic age for host rock dolomitisation in the Mascot-Jefferson City Mississippi Valley-type (MVT) district ∼ 70 km to the northeast. These ages suggest that a single fluid flow event at 334 ± 8 Ma, either topographically or thrust-fault-driven, caused a regional chemical remagnetisation of the carbonates hosting MVT mineralisation in eastern Tennessee, indicating an early onset of the Alleghenian Orogeny in the southern Appalachians.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::39f6b212328c5301b5fdf1dfc4cd46a8 https://doi.org/10.1016/s0375-6742(03)00023-2 Zobrazit plný text záznamu Full Text from ScienceDirect