On the Zonal Index-Species of the Standard Scale of the Ryazanian Stage on the Russian Platform

2021 ◽  
Vol 55 (3) ◽  
pp. 277-287
Author(s):  
V. V. Mitta
Keyword(s):  
Russian Platform ◽  
Zonal Index ◽  
Standard Scale ◽  
Index Species ◽  
Ryazanian Stage

scholarly journals Some perisphinctoid ammonites of the Štramberk Limestone and their dating with associated microfossils (Tithonian to Lower Berriasian, Outer Western Carpathians, Czech Republic)

2017 ◽  
Vol 68 (6) ◽  
pp. 583-605 ◽  
Author(s):  
Zdeněk Vašíček ◽  
Daniela Reháková ◽  
Petr Skupien
Keyword(s):  
Czech Republic ◽  
Russian Platform ◽  
Western Carpathians ◽  
Present Contribution ◽  
Type Area ◽  
Outer Western Carpathians ◽  
The Matrix ◽  
Ryazanian Stage ◽  
Lowermost Part ◽  
Lower Berriasian

AbstractThe present contribution deals with the taxonomy of seven species of perisphinctoid ammonite from the Štramberk Limestone (Outer Western Carpathians, Czech Republic) deposited in Moravian-Silesian museums. The age of these studied ammonites is compared with that of index microfossils contained in the matrix adhering to or infilling the studied specimens. The ammonites document a stratigraphic range from earliest Tithonian to early Berriasian. In addition to taxonomy and new ontogenetic data on some species, we also present data on their palaeogeographic distribution. The occurrence of Subboreal himalayitids in the Štramberk Limestone of an early Berriasian age is determined by both the microfauna and accompanying ammonites, which indicate connection of the Silesian-part of the Tethyan Carpathian area with the Subboreal Russian Platform Basin. These records also suggest an early Berriasian age (Jacobi Chron) for the lowermost part of the Ryazanian stage in its type area.

scholarly journals Fusulinid Foraminifera of the Bashkirian–Moscovian boundary in the eastern Taurides, southern Turkey

2007 ◽  
Vol 26 (1) ◽  
pp. 73-85 ◽  
Author(s):  
Aleksandra V. Dzhenchuraeva ◽  
Cengiz Okuyucu
Keyword(s):  
Southern Urals ◽  
Russian Platform ◽  
Tien Shan ◽  
The Southern Urals ◽  
Index Species ◽  
Southern Turkey ◽  
Moscovian Stage ◽  
Bashkirian Stage

Abstract. Fusulinid faunas of the Pennsylvanian (Bashkirian–Moscovian) deposits of the Siyah Aladag Nappe were investigated from the Kuzuoluk section located in the eastern Taurides. The section is represented by grey, occasionally laminated, algal and fusulinid-rich limestones. The foraminiferal faunas of the Kuzuoluk section are very diverse and abundant which allows identification of the Bashkirian–Moscovian boundary by index-species such as Verella spicata and Aljutovella aljutovica. Other key taxa in the Bashkirian–Moscovian interval include Pseudostaffella grandis and Staffellaeformes staffellaeformis (Bashkirian Stage, upper part of the Lower Substage), Ozawainella pararhomboidalis and Staffellaeformes bona (Bashkirian Stage, Upper Substage), Verella spicata (Bashkirian Stage, Upper Substage) and Aljutovella aljutovica Zones (Moscovian Stage, Lower Substage). The Bashkirian–Moscovian microfaunas from the Kuzuoluk section can be correlated with assemblages from Tien-Shan, the Southern Urals and the Russian Platform.

Three Conceptual Impediments to Developing Scale Theory for Formative Scales

Methodology ◽  
2018 ◽  
Vol 14 (4) ◽  
pp. 156-164 ◽  
Author(s):  
Keith A. Markus
Keyword(s):  
Scale Development ◽  
Item Analysis ◽  
Model Fitting ◽  
Item Bias ◽  
Validity Evidence ◽  
Scale Theory ◽  
Underlying Theory ◽  
Standard Scale ◽  
Item Scores

Abstract. Bollen and colleagues have advocated the use of formative scales despite the fact that formative scales lack an adequate underlying theory to guide development or validation such as that which underlies reflective scales. Three conceptual impediments impede the development of such theory: the redefinition of measurement restricted to the context of model fitting, the inscrutable notion of conceptual unity, and a systematic conflation of item scores with attributes. Setting aside these impediments opens the door to progress in developing the needed theory to support formative scale use. A broader perspective facilitates consideration of standard scale development concerns as applied to formative scales including scale development, item analysis, reliability, and item bias. While formative scales require a different pattern of emphasis, all five of the traditional sources of validity evidence apply to formative scales. Responsible use of formative scales requires greater attention to developing the requisite underlying theory.

Reef episodes, anoxia and sea-level changes in the Frasnian of the southern Timan (NE Russian platform)

2000 ◽  
Vol 178 (1) ◽  
pp. 147-176 ◽  
Author(s):  
M. R. House ◽  
V. V. Menner ◽  
R. T. Becker ◽  
G. Klapper ◽  
N. S. Ovnatanova ◽  
...  
Keyword(s):  
Sea Level ◽  
Russian Platform ◽  
Sea Level Changes ◽  
And Sea Level

Pelagic Amphipoda of the Belle Isle Strait Region

1951 ◽  
Vol 8b (3) ◽  
pp. 134-163 ◽  
Author(s):  
E. L. Bousfield
Keyword(s):  
Light Intensity ◽  
Breeding Season ◽  
Cold Water ◽  
Ocean Currents ◽  
Southern Limit ◽  
Index Species ◽  
Labrador Current ◽  
Themisto Libellula

The distribution of certain pelagic Amphipoda taken in the Belle Isle strait region during the summer of 1923 is correlated with ocean currents, light intensity and size of individuals. Hyperoche medusarum, Themisto libellula and Pseudalibrotus glacialis are index species of the cold Labrador current in the area. Hyperia galba and H. medusarum are presumably also cold water indicators. Themisto abyssorum in sizeable numbers, and Calliopius laeviusculus are related to waters of the gulf of St. Lawrence. Themisto libellula, T. compressa form compressa and T. compressa form bispinosa are more numerous, while T. abyssorum is less numerous at the surface during daylight than during darkness. Part of the breeding season of T. compressa and T. abyssorum occurs in the area during August and September, when the young of both species are much more numerous than the adults, particularly at the surface. A new southern limit of distribution for P. glacialis is established. The known distribution of the tropical genus Phronima is extended into the gulf of St. Lawrence.

Variation in the chemical composition of carbonate rocks of Russian platform

1957 ◽  
Vol 12 (3) ◽  
pp. 273-276 ◽  
Author(s):  
A.P. Vinogradov ◽  
A.B. Ronov ◽  
V.M. Ratynskii
Keyword(s):  
Chemical Composition ◽  
Carbonate Rocks ◽  
Russian Platform
Sign in / Sign up

Export Citation Format

Share Document