Results of U–Pb LA–ICP–MS dating of detrital zircons from Ediacaran–Early Cambrian deposits of the eastern part of the Baltic monoclise


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Here we present the results of U–Pb LA–ICP–MS dating of detrital zircons from the Ediacaran–Early Cambrian deposits of the eastern part of the Baltic monoclise (Leningrad Region). The obtained age spectra of the detrital zircons suggest that, in the Ediacaran–Early Cambrian, the main clastic material source to the northwest of the Russian Platform was the Baltic Shield. Then in the Early Cambrian along with the Baltic Shield provenance, a clastic source from the Timanian margin of Baltica (northeast in modern coordinates) contributed to the deposits. The obtained data either somewhat set limits of the Timanian orogen formation as older than the previously suggested Middle Cambrian (about 510 Ma), based on the “absence of a Proto–Uralian–Timanian provenance signal” in the Sablino Formation rocks in the south Ladoga, or suggest another rearrangement of detritus transportation paths at the end of Stage 3 (Atdabanian).

作者简介

A. Ivleva

St. Petersburg State University

编辑信件的主要联系方式.
Email: ias.ivleva@gmail.com
俄罗斯联邦, St. Petersburg

V. Podkovyrov

Institute of Precambrian Geology and Geochronology

Email: ias.ivleva@gmail.com
俄罗斯联邦, St. Petersburg

V. Ershova

St. Petersburg State University

Email: ias.ivleva@gmail.com
俄罗斯联邦, St. Petersburg

O. Anfinson

University of Texas at Austin

Email: ias.ivleva@gmail.com
美国, Austin, Texas

A. Khudoley

St. Petersburg State University

Email: ias.ivleva@gmail.com
俄罗斯联邦, St. Petersburg

P. Fedorov

St. Petersburg State University

Email: ias.ivleva@gmail.com
俄罗斯联邦, St. Petersburg

A. Maslov

Institute of Geology and Geochemistry

Email: ias.ivleva@gmail.com
俄罗斯联邦, Pochtovy per. 7, Yekaterinburg, 620151

D. Zdobin

St. Petersburg State University

Email: ias.ivleva@gmail.com
俄罗斯联邦, St. Petersburg

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