Scholarlink

Abstract <p>U–Pb dating (LA-ICP-MS) is carried out on detrital zircon from pre-Middle Devonian terrigenous deposits of the Vychegda Trough (southern margin of the Mezen syneclise) penetrated by Seregovo 1, Storozhevsk 1, and Keltma 1 parametric wells. Analysis of the detrital zircon ages and subsequent calculations of maximum depositional age (MDA) based on different algorithms has made it possible to clarify the stratigraphic position of the studied successions. The deposits of the Nyafta Formation, penetrated by Seregovo 1 well, have Middle Riphean MDAs. The MDAs of the Uftyug Formation zircons correspond to the Middle-Late Riphean, and those of the Ust-Pinega Formation correspond to the Late Riphean. For the Mezen Formation, penetrated by Keltma 1 well, the calculated MDAs for the first time suggest an Early Cambrian or younger age.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Maximum Depositional Age of Pre-Middle Paleozoic Terrigenous Rocks of the Vychegda Trough (Northeast of the East European Platform): Results of U–Pb Dating of Detrital Zircons

  • 期刊论文

  • 发表日期：

    2025年9月21日

查看全文
  • V. B. Ershova,
  • V. N. Podkovyrov,
  • A. S. Ivleva,
  • A. V. Maslov

摘要

Abstract

U–Pb dating (LA-ICP-MS) is carried out on detrital zircon from pre-Middle Devonian terrigenous deposits of the Vychegda Trough (southern margin of the Mezen syneclise) penetrated by Seregovo 1, Storozhevsk 1, and Keltma 1 parametric wells. Analysis of the detrital zircon ages and subsequent calculations of maximum depositional age (MDA) based on different algorithms has made it possible to clarify the stratigraphic position of the studied successions. The deposits of the Nyafta Formation, penetrated by Seregovo 1 well, have Middle Riphean MDAs. The MDAs of the Uftyug Formation zircons correspond to the Middle-Late Riphean, and those of the Ust-Pinega Formation correspond to the Late Riphean. For the Mezen Formation, penetrated by Keltma 1 well, the calculated MDAs for the first time suggest an Early Cambrian or younger age.