当前位置:
X-MOL 学术
›
Stratigr. Geol. Correl.
›
论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Palynostratigraphy and Genesis of the Upper Cretaceous and Cenozoic Deposits in the Southern Part of the Kulunda Depression, Altai Region
Stratigraphy and Geological Correlation ( IF 1 ) Pub Date : 2020-01-27 , DOI: 10.1134/s0869593819060054 N. K. Lebedeva , O. B. Kuz’mina , I. V. Khazina , G. G. Rusanov , L. A. Glinskikh
中文翻译:
阿尔泰地区库伦达De陷南部上白垩统和新生代矿床的古地层学和成因
更新日期:2020-01-27
Stratigraphy and Geological Correlation ( IF 1 ) Pub Date : 2020-01-27 , DOI: 10.1134/s0869593819060054 N. K. Lebedeva , O. B. Kuz’mina , I. V. Khazina , G. G. Rusanov , L. A. Glinskikh
Abstract—
The results of palynological and micropaleontological studies of the Upper Cretaceous–Cenozoic strata penetrated by Boreholes 23 and 19 of the Aleiskaya area (Altai krai) are presented. The obtained data allowed us to substantiate the age of the deposits, make suggestions concerning their depositional environment, and to clarify the subdivision of geological section into formations. Two palynological assemblages were recognized in the Cretaceous part of the Borehole 23 section: the first one characterizes the Len’ki Formation and is dated as Cenomanian–Turonian; the second one is recognized in the Upper Sym Subformation and is dated as Maastrichtian. The Upper Cretaceous sequence is overlain by the terrestrial Ostrovnoe Formation (Paleogene). In Boreholes 19 and 23, this formation contains presumably Late Paleocene–Early Eocene and Middle Eocene spore and pollen spectra, respectively. Palynological data substantiate the Late Miocene age of sedimentary strata in the upper part of the geological section of Borehole 23 and their belonging to the Pavlodar Formation. The structure of the palynological assemblages, the specific features of the macerate, and the absence of foraminifers indicate the continental genesis of the Upper Cretaceous–Paleogene sedimentary deposits in the southern part of the Kulunda Depression in Altai krai.中文翻译:
阿尔泰地区库伦达De陷南部上白垩统和新生代矿床的古地层学和成因