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| Titel |
Geotectonic setting of the Tertiary Uyandina and Indigirka-Zyryanka basins, Republic Sakha (Yakutia), Northeast Russia, using coal rank data |
| VerfasserIn |
H.-J. Paech |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1868-4556
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| Digitales Dokument |
URL |
| Erschienen |
In: Geology, geophysics and tectonics of Northeastern Russia: a tribute to Leonid Parfenov ; Nr. 4 (2009-09-17), S.85-96 |
| Datensatznummer |
250001441
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| Publikation (Nr.) |
 copernicus.org/smsps-4-85-2009.pdf |
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| Zusammenfassung |
| Outcrops along the Inach River in the Uyandina basin and those along the
Myatis' River in the Indigirka-Zyryanka basin were studied in detail and
sampled for coal rank determinations. The Uyandina basin is an intramontane
pull-apart basin characterized by extensional structures within the Moma rift
system. The coal rank is below 0.3% vitrinite reflectance (Rr), which
indicates shallow, immature conditions of basin formation and very low
subsidence. The Myatis' River coal-bearing outcrops in the Indigirka-Zyryanka
basin reveal compression induced by continent collision. The compressive
deformation includes also lowermost Pliocene strata. Due to the position in
the Verkhoyansk-Chersky fold belt adjacent to the Kolyma-Omolon
microcontinent the Indigirka-Zyryanka basin has much in common with a
foredeep, i.e. the asymmetry in thickness and tectonic structure. The
vitrinite reflectance data (Rr) which range from 0.25% to more than 5%
reinforce the accepted models that describe basin subsidence and geothermal
history and the tectonic deformation. |
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