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Ulf Söderlund

Ulf Söderlund

Professor

Ulf Söderlund

РАСШИРЕНИЕ АРЕАЛА ТИМПТОНСКОЙ КРУПНОЙ МАГМАТИЧЕСКОЙ ПРОВИНЦИИ (~1.75 МЛРД ЛЕТ) СИБИРСКОГО КРАТОНА

Enlargement of the area of the Timpton large igneous province (ca. 1.75 Ga) of the Siberian craton

Författare

  • D. P. Gladkochub
  • T. V. Donskaya
  • R. E. Ernst
  • U. Söderlund
  • A. M. Mazukabzov
  • M. N. Shokhonova

Summary, in English

We present new geochronological data on dolerites from the Chaya dyke swarm of the Baikal inlier of the Siberian craton. The U-Pb dating of baddeleyite from one dyke located at the SW end of the Chaya dyke swarm yielded an age of 1752±6 Ma, similar to the previously obtained age of a dyke in the NE end of this swarm. These ages establish an age of 1752 Ma for a unified Chaya dyke swarm that extends for more than 200 km in the Baikal inlier of the Siberian craton. These new data confirm that the entire Chaya dyke swarm (as well as the Timpton-Algamay and Eastern Anabar swarms) is a part of an overall radiating dyke swarm belonging to the Late Paleoproterozoic Timpton Large Igneous Province (LIP), the center of which is located in the middle section of the Vilyuy river flow. Thus, the LIP is enlarged to include the area further west in the Siberian craton.

Avdelning/ar

  • Berggrundsgeologi

Publiceringsår

2019

Språk

Ryska

Sidor

829-839

Publikation/Tidskrift/Serie

Geodynamics and Tectonophysics

Volym

10

Issue

4

Dokumenttyp

Artikel i tidskrift

Förlag

Rossijskaja akademija nauk / Russian Academy of Sciences

Ämne

  • Geology

Nyckelord

  • Dolerite
  • Dyke
  • Large Igneous Province (LIP)
  • Paleoproterozoic
  • Siberian craton
  • U–Pb baddeleyite age

Aktiv

Published

ISBN/ISSN/Övrigt

  • ISSN: 2078-502X