The nature of scattered and concretion pyrite in the Upper Abalak Formation of the Salym oil field (Western Siberia)
- Авторы: Iurchenko A.1, Takahata N.2, Tanaka K.2, Sano Y.2, Balushkina N.1, Kalmykov G.1
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Учреждения:
- Moscow State University
- Tokyo University
- Выпуск: Том 71, № 6 (2016)
- Страницы: 466-471
- Раздел: Brief Communications
- URL: https://journals.rcsi.science/0145-8752/article/view/174351
- DOI: https://doi.org/10.3103/S0145875216060132
- ID: 174351
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Аннотация
Dispersed and concretionary pyrite in chert–clay–carbonate and carbonate rocks of the Abalak Formation (Salym oil field) have been studied. The study was conducted using Scanning Electron Microscopy (SEM), Electron Probe Microanalysis (EPMA), and high spatial resolution Secondary Ion Mass Spectrometry (Nano-SIMS). As a result, three morphological groups of pyrite have been distinguished: large cubic crystals, framboidal pyrite, and fine-crystal aggregates that replace organic remnants. The sulphur isotope ratio allows one to distinguish two genetic types of pyrite. The source of the sulphur for the first genetic group was H2S produced by bacterial sulphate reduction, while the second group pyrite was formed with sulphur as a product of thermochemical sulphate reduction.
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Об авторах
A. Iurchenko
Moscow State University
Автор, ответственный за переписку.
Email: annette1988@inbox.ru
Россия, Moscow
N. Takahata
Tokyo University
Email: annette1988@inbox.ru
Япония, Tokyo
K. Tanaka
Tokyo University
Email: annette1988@inbox.ru
Япония, Tokyo
Y. Sano
Tokyo University
Email: annette1988@inbox.ru
Япония, Tokyo
N. Balushkina
Moscow State University
Email: annette1988@inbox.ru
Россия, Moscow
G. Kalmykov
Moscow State University
Email: annette1988@inbox.ru
Россия, Moscow