Published November 2002
| Version v1
Journal article
Fragments of the paleozoic active margin in the southern rim of the Mongolian-Okhotsk fold belt (illustrated with the northeast part of the Argun terrain, Amur region)
- 1. Geologicheskij Inst. Kol'skogo Nauchnogo Tsentra RAN, Apatity, Murmanskaya Obl. (Russian Federation)
- 2. Otdelenie Regional'noj Geologii i Gidrologii Amurskogo Nauchnogo Tsentra DVO RAN, Blagoveshchensk (Russian Federation)
Description
The age of rocks in paleozoic intrusions in the north-east margin of the Argun terrain was determined by the methods of U-Pb-dating by zircons, as well as Rb-Sr- and Sm-Nd-dating bu bulk composition samples to study specific features of the structure and formation of the Mongolian-Okhotsk fold belt. It was ascertained that the most ancient structures formed as a result of intrusive magmatism are dated as 467 ± 5.5 bill. years, intermediate ones - 386 ± 10 and 371 ± 5.5 bill. years, the youngest ones - 274-278 bill. years
Abstract (Russian)
С целью изучения особенностей строения и формирования Монголо-Охотского складчатого пояса методами U-Pb-датирования по цирконам, а также Rb-Sr- и Sm-Nd-датирования по пробам валового состава, определен возрат пород палеозойских интрузий северо-восточной окраины Аргунского террейна. Установлено, что наиболее древние образования в результате интрузивного магматизма датируются возрастом 467 ± 5.5 млн. лет, средние - 386 ± 10 и 371 ± 5.5 млн. лет, наиболее молодые - 274-278 млн. летAdditional details
Additional titles
- Original title (Russian)
- Фрагменты палеозойских активных окраин южного обрамления Монголо-Охоцкого пояса (на примере северо-восточной части Аргунского террейна, Приамурье)
Publishing Information
- Journal Title
- Doklady Akademii Nauk - Rossijskaya Akademiya Nauk
- Journal Volume
- 387
- Journal Issue
- 3
- Journal Page Range
- p. 382-386
- ISSN
- 0869-5652
- CODEN
- DAKNEQ
INIS
- Country of Publication
- Russian Federation
- Country of Input or Organization
- Russian Federation
- INIS RN
- 35043223
- Subject category
- S58: GEOSCIENCES;
- Descriptors DEI
- ISOTOPE DATING; LEAD ISOTOPES; MAGMATISM; NEODYMIUM ISOTOPES; PETROGENESIS; PLUTONIC ROCKS; RUBIDIUM ISOTOPES; SAMARIUM ISOTOPES; STRONTIUM ISOTOPES; URANIUM ISOTOPES; ZIRCON
- Descriptors DEC
- AGE ESTIMATION; ALKALINE EARTH ISOTOPES; GEOLOGY; IGNEOUS ROCKS; ISOTOPES; MINERALS; PETROLOGY; ROCKS; SILICATE MINERALS
Optional Information
- Notes
- 15 refs., 3 figs., 2 tabs.