학술논문

Quaternary deposits of the Pritaymyr Islands (the Kara shelf)
Document Type
Academic Journal
Source
Russian Geology and Geophysics. 64(5):582-594
Subject
24|Quaternary geology
absolute age
Arctic Ocean
Arthropoda
Asia
C-14
carbon
Cenozoic
Commonwealth of Independent States
Crustacea
dates
feldspar group
fluvial environment
Foraminifera
framework silicates
glacial environment
glaciofluvial environment
Holocene
infrared stimulated luminescence
islands
isotopes
Kara Sea
Krasnoyarsk Russian Federation
Mandibulata
marine environment
microfossils
Minin Skerries
miospores
MIS 3
Nordenskiold Land
Ostracoda
paludal environment
palynomorphs
Pleistocene
pollen
Pritaymyr Islands
Quaternary
radioactive isotopes
Russian Federation
sediments
Sibiryakov Island
silicates
spores
Sverdrup Island
Taymyr Dolgan-Nenets Russian Federation
terraces
terrestrial environment
Th/U
trenching
Language
English
ISSN
1068-7971
Abstract
-The rarely visited islands of the Kara Sea in its Prytaimyr zone have been studied during a geological survey on the scale 1:1,000,000. The Quaternary deposits of the islands are represented by the Middle Paleo-Pleistocene to Holocene marine, lacustrine-marsh, alluvial and slope sediments. New radiocarbon and uranium-thorium dating has been obtained for the Quaternary sediments, using organic remains (wood, peat, mollusk shells). For the first time, dating on sandy sediments was obtained for the islands, using the method of infrared optically stimulated luminescence (IR-OSL). The sediments of marine terraces are of the greatest distribution on the islands; these sediments can be correlated with the Karginsky (MIS 3) horizon, lacustrine-marsh sediments and deposits of the cover complex, containing flora remains, mainly the Holocene.