The Upper Cretaceous deposits structure of Western Siberia

2021 ◽  
pp. 51-68
Author(s):  
V. A. Marinov ◽  
S. E. Agalakov ◽  
T. V. Glukhov ◽  
A. I. Kudamanov ◽  
M. Yu. Novoselova
Keyword(s):  
Upper Cretaceous ◽  
Western Siberia ◽  
New Materials ◽  
New Model ◽  
Regional Correlation ◽  
Cretaceous Deposits

As the title implies the article presents the results of many years comprehensive research of the Western Siberian Upper Cretaceous stratigraphy (without Cenomanian). The volume of Upper Cretaceous formation, their biostratigraphic and lithological characteristics are discussed. Based on the analysis of new materials (lithological, biostratigraphic, well geophysics investigation data, magnetostratigraphic, seismostratigraphic), the regional correlation scheme of formations, members and beds has been refined. A new model of correlation schemes, a scheme of facies zoning, and reasonable changes in the nomenclature of the Upper Cretaceous formations are proposed. The Slavgorod and Ipatovo horizons have been replaced by a single Berezovo horizon. Specific properties description of the new suites, established at the first (Okhteurievo, Tagul, Bolshaya Laida, Nizhnaya Agapa), have been done.

scholarly journals New pyroclastics occurrences in Upper Cretaceous deposits of Western Siberia

2020 ◽  
pp. 19-28
Author(s):  
T.M. Karikh ◽  
◽  
A.I. Kudamanov ◽  
S.V. Agalakov ◽  
V.A. Marinov ◽  
...  
Keyword(s):  
Upper Cretaceous ◽  
Western Siberia ◽  
Cretaceous Deposits

Paleomagnetic characteristics of upper cretaceous sediments of North–East Western Siberia

2020 ◽  
Author(s):  
Aleksandra Levicheva ◽  
◽  
Zinaida Gnibidenko ◽  
Keyword(s):  
Upper Cretaceous ◽  
Western Siberia ◽  
Facial Region ◽  
Paleontological Data ◽  
North East ◽  
Deep Wells ◽  
Cretaceous Deposits

Presents the results of complex paleomagnetic and geological–stratigraphical study of Upper Cretaceous deposits of the three deep wells (Tagul’skaya 21, Tagul’skaya 25) (south–east of Western Siberia, Kolpashevo facial region), drilled on the nord–east of Western Siberia (Enisei–Khatangskii megadeflection). All studies were complex and carried out based on paleomagnetic, geological– stratigraphic and paleontological data.

Diversity, morphology, and phylogeny of coleoid cephalopods from the Upper Cretaceous Plattenkalks of Lebanon-Part I: Prototeuthidina

2011 ◽  
Vol 85 (2) ◽  
pp. 234-249 ◽  
Author(s):  
Dirk Fuchs ◽  
Neal Larson
Keyword(s):  
Digestive Tract ◽  
Upper Cretaceous ◽  
Soft Part ◽  
Phylogenetic Analyses ◽  
Early Jurassic ◽  
The Other ◽  
Large Collection ◽  
Shaped Body ◽  
Cretaceous Deposits

Morphologic analyses of a large collection of coleoid cephalopods from the Lebanese Upper Cretaceous yielded a much higher diversity than previously assumed and revealed numerous extraordinarily well-preserved, soft-part characters. An analysis of the Prototeuthidina, a gladius-bearing group with a slender torpedo-shaped body, revealed two species:Dorateuthis syriacaandBoreopeltis smithin. sp. Previously unknown soft-part characters, such as the digestive tract, the gills, and the cephalic cartilage considerably improved our knowledge ofD. syriaca.Since none of the investigated specimens show more than eight arms, similarities with modern squids are regarded as superficial.Boreopeltis smithin. sp. is erected on the basis of its comparatively wideParaplesioteuthis-like gladius. The latter species represents the first unambiguous record of this genus in Upper Cretaceous deposits. Phylogenetic analyses indicate that the prototeuthidid clade consists of two lineages. The plesioteuthidid lineage originates from early JurassicParaplesioteuthisand leads toPlesioteuthisandDorateuthis.The other lineage is morphologically more conservative and leads toBoreopeltis.

New notions of Vikulovskaya series reservoir model in the area of Krasnoleninskoye field (Western Siberia)

2020 ◽  
pp. 66-74
Author(s):  
T. G. Isakova ◽  
T. F. Diakonova ◽  
A. D. Nosikova ◽  
D. S. Savchenko ◽  
N. I. Korobova ◽  
...  
Keyword(s):  
Western Siberia ◽  
Parameters Estimation ◽  
Well Logs ◽  
Reservoir Model ◽  
New Model ◽  
Core Samples ◽  
New Methods

Detailed lithological, sedimentological, petrophysical studies of columns and core samples of Vikulovskaya series were performed. On the basis of researches the new model of a reservoir was made and new methods of volumetric parameters estimation based on well logs were established.

scholarly journals The lower and middle Turonian (upper cretaceous) stratigraphy of the Yenisei Western Siberia (left side) region by foraminifers and inoceramids

2019 ◽  
Vol 27 (4) ◽  
pp. 40-58
Author(s):  
V. A. Marinov ◽  
S. E. Agalakov ◽  
I. N. Kosenko ◽  
O. S. Urman ◽  
E. A. Potapova ◽  
...  
Keyword(s):  
Upper Cretaceous ◽  
Western Siberia ◽  
Yenisei River ◽  
The Yenisei River

The article presents the results of the litho-biostratigraphic study of the lower part of the Upper Cretaceous sea deposits on the territory of the Bolshaja Kheta structural terrace on the left side of the Yenisei river in its lower reaches (the tops of the Dolgan suite, Dorozhkovo suite and the bottoms of the Nason suite; Turonian stage). Eleven lithological members surely extended on the Bolshaja Kheta structural terrace are selected. Each member has received the paleontological characteristic. The layers with fauna (inoceramids and foraminifers) are identified and compared with the zonal subdivisions of the Turonian in Western Siberia. It is established that the upper part of the Dolgan suite belongs to the Lower Turonian substages, the Mytiloides labiatus zone. Dorozhkovo suite in the studied area close to its stratotype area corresponds to the Lower and Middle Turonian.

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