| Article |
|---|
| Article name |
Facies Associations of Locality of Jurassic Feathered Kulinda Dinosaurs (Olov Depression, Transbaikalia) |
| Authors |
Sinitsa S.M. Doctor of Geology and Minerology, Associate Professor, sinitsa-sm@rambler.ruVil’mova E.S. Senior Lecturer, zvezdochka_kiss_@mail.ruBerdnikov N.L. Doctoral Candidate, nikolay.77789@mail.ru |
| Bibliographic description |
Sinitsa S. M., Vil’mova E. S., Berdnikov N. L. Facies Associations of Locality of Jurassic Feathered Kulinda Dinosaurs (Olov Depression, Transbaikalia)// Scholarly Notes of Transbaikal State University. Series Biological sciences. 2017. Vol. 12, No. 1. PP. 60–67. |
| Section |
PALEOBIOLOGY |
| UDK |
568.19(571.55) |
| DOI |
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| Article type |
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| Annotation |
When studying the sections of Kulinda locality of Jurassic feathered dinosaurs in Olov Depression,
facies different in color, composition, textures and organic remains forming the individual beds of three
formation members of the lower subsuite of Ukureyskaya Formation have been revealed. The facies are
indicative of changes in sedimentation conditions from normal lacustrine to severe proluvial and
occasional one. The dominance of siltstone facies and biofacies with isolated bone remains of skeletons,
skin, feather-like structures and scale-like surface of dinosaur tails and limbs with various plant and
lymnetic invertebrate remains are typical for the lower sandstone-siltstone formation member. Psammitic
facies are represented by sandstones with lenses of granite and gravel-break stone material. With
increase of psephitic adulteration (over 50 %) sandstones change to chlidolites. Sandy-chlidolite facies
are accumulated in the near shore lake shallow waters when covering the lake with rainwashes with the
formation of severe (rare) facies on. The appearance of single beds (up to 5 cm) of ashstones with
unusual organic remains indicates one-time addition of aeolian volcanic dust into the lake, and the
formation of single (exclusive) facies. Facies composition of the sections of tuffaceous sedimentary and
tuffaceous formation members are notable for psephitic facies-sandstones composed of nongraded and
unrounded weathering residues of granites, which were drifted into the lake by rainwashes and covered
beaches. There are analogous biofacies with some differences in the form of lacking scale-like surface
tails, skin and feather-like structures of dinosaurs. The lithological and petrological and paleontological
features of formation members allow us to make a comparison with the facies of hydrological landlocked
and open lakes; mark the similarities and differences in terrigenous lake and proluvial
sedimentation which lower chemical and biogenic deposition.
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| Key words |
lithofacies, siltstones, psammites, ash tuffites, rotten stones, biofacies, hydrological
land-locked lakes, hydrological open lake |
| Article information |
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| References |
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| Full article | Facies Associations of Locality of Jurassic Feathered Kulinda Dinosaurs (Olov Depression, Transbaikalia) |
