| Article |
|---|
| Article name |
Toreyand East-Torey Basins (Stratigraphy, Paleontology, Paleoreconstruction) |
| Authors |
Sinitsa S.M. Doctor of Geology and Minerology, Associate Professor, sinitsa-sm@rambler.ru |
| Bibliographic description |
|
| Section |
Geography |
| UDK |
551.75 |
| DOI |
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| Article type |
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| Annotation |
The UpperMesozoic deposits of the basins were stripped with wells. Rocky outcrop of
effusions with horizons of terrigenous rocks along the northern margins of lakes is known only for
the Torey basin. This section and the section of well 2 are adopted by the author as the key ones for
the Upper Mesozoic of the basin. The remains of gastropods, ostracods, insects and fish of Turga
complex were found by the author in terrigenous rocks. Specific conchostraca-Defretiniya which are
the characteristic of Ust-Kara transitional horizon between the Unda-Daya Late Jurassic and the
Turga Jurassic-Cretaceous complexes together with the representatives of the Turga species were
found at the bottoms of the section. This fact allowed author to divide the section of Upper Mesozoic
of he Torey basin into the Ust-Kara transitional horizon (Late Jurassic; layers with Defretiniya) and
the Turga suite (late Jurassic – early Cretaceous; layers with bairdesteria and lykoptera). The author
made the reconstruction of shallow short-lived waters on nappes during the decay and cessation of
eruptions. The Upper Mesozoic of the East-Torey basin is stripped of effusive flows and in the east
of the basin is presented by proluvialred-colored psephites, whichfacilely replace lacustrine finely detrital sediments of the central parts of the basin. Gastropods and ostracoda are dominated among
the organic remains. Myarians, insects, conchostraca, fish and plants of the Turga complexes (late
Jurassic – early Cretaceous) are rare. The author also made the reconstruction of large ground
pluvial talus fans in the east of the basin and a shallow lake in the fan zone in the west of the basin.
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| Key words |
Upper Mesozoic, the Torey basins, the Ust-Kara transitional horizon, layers with
defretiniya, the Turga suite, layers with bairdesteria and lykoptera. |
| Article information |
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| References |
1. Gekker R. F. Vvedenie v paleoekologiyu. M.: Gosgeoltekhizdat, 1957. 125 s.
2. Obstanovki osadkonakopleniya i fatsii. M.: Mir, 1990. T. I. 351 s.
3. Maleeva E. F. Vulkanity. M.: Nedra, 1980. 240 s.
4. Sinitsa S. M I. Biostratigrafiya verkhnego mezozoya Vostochnogo Zabaikal\'ya po
ostrakodam. II. Biostratigraficheskoe raschlenenie i korrelyatsiya razrezov verkhnego mezozoya
Tsentral\'nogo i Vostochnogo Zabaikal\'ya // Izvestiya Zabaikal\'skogo fil. Geograficheskogo obshch-va
SSSR. Tom V. Vyp. 4. Chita, 1969. S. 3–18.
5. Sinitsa S. M. Yura i nizhnii mel Tsentral\'noi Mongolii (ostrakody, stratigrafiya i
paleorekonstruktsii). M.: Nauka, 1993. 239 s.
6. Sinitsa S. M. Perekhodnye gorizonty v stratigrafii verkhnego mezozoya Zabaikal\'ya. Vestn.
ZabGU. 2011. № 3 (70). S. 98–103.
7. Tolstikova I. V. O vozmozhnosti ispol\'zovaniya mollyuskov dlya rekonstruktsii paleolimnologicheskikh
uslovii v drevnikh ozerakh aridnogo i gumidnogo klimata // Paleolimnologiya ozer v
aridnykh i gumidnykh zonakh. M.: Nauka, Leningrad. otd-nie, 1985. S. 62–85. |
| Full article | Toreyand East-Torey Basins (Stratigraphy, Paleontology, Paleoreconstruction) |
