Galina Khristophorovna KazarinaP.P. Shirshov Institute of Oceanology · Department of Geology
Galina Khristophorovna Kazarina
Doctor of Philosophy
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23
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Publications
Publications (23)
The paper presents micropaleontological information and observations of the North Pacific diatom species Neodenticula (N.) seminae (Simonsen and Kanaya) Akiba and Yanagisawa in the surface and Holocene sediments from the North Atlantic, Nordic, and Arctic Seas. The compilation of previously published data and new findings of this study on N. semina...
Lithological and micropaleontological (planktonic and benthic foraminifers, diatoms) studies in four sediment cores revealed major patterns of lithostratigraphy and biostratigraphy of contourites and gravitites in the uppermost sediment layer within the depth range 3500–4300 m of the northern sector of the Patagonian continental slope contourite sy...
The environmental system of the northern Nordic Seas is very sensitive to oceanographic and climatic changes at the contact of cold Arctic and warmer North Atlantic waters. These contrasts are reflected in the associations of marine microorganisms and archived in the bottom sediments. A microfossil study (diatoms, coccoliths) of late Holocene sedim...
The micropaleontological study of two sediment cores taken from the continental slope of the Eastern Kamchatka Peninsula and from the northern Shirshov Ridge in the Bering Sea in the scope of the international KALMAR project reveals regional environmental changes over the last 20 kyr: the end of the last glaciation 20–15 ka, Bølling-Allerød warming...
Reference cores of sediments from the Angola and Cape basins were subjected to lithological, geochemical, and micropaleontological investigations. Based on nannofossil and diatom assemblages, the examined sediments represented by oxidized miopelagic clays, calcareous (nannofossil-foraminiferal, foraminiferal-nannofossil), calcareous-clayey, and cla...
Several variously-aged complexes of microfauna were distinguished in siliceous rocks, dredged from the Shirshov ridge (Bering Sea) by the NIS 'Dmitriy Mendeleev'. They were Late Miocene (Diatomeae, mainly planktonic oceanic forms), Palaeogene (Oligocene?) (Radiolaria, Silicoflagellata and Diatomeae from shallow, moderately cold basins), Late Cretac...
Core MD02-2508 retrieved from the plateau of the continental slope off Baja California recovered a 40-m-thick section of sapropel (up to 15% C-org), calcareous clay, and diatom ooze with the age of 120 ka at the core bottom. The section is subdivided into three units: Unit I (Holocene) consists of the laminated sapropel; Unit II comprising oxygen i...
Core MD02-2508 retrieved from the plateau of the continental slope off Baja California recovered a 40-m-thick section of sapropel (up to 15% Corg), calcareous clay, and diatom ooze with the age of 120 ka at the core bottom. The section is subdivided into three units: Unit I (Holocene) consists of the laminated sapropel; Unit II comprising oxygen is...
Ten cores taken by a gravity corer from an area 5 × 5 km in size at the foot of the western slope of the Derbent Basin recovered
uniform sections composed of variegated clotted diatomaceous oozes and soft gray clays with hydrotroilite-enriched spots,
lenses, and laminae, the abundance of which increases downward. The diatom assemblages indicate a s...
Lithological and micropaleontological studies of sediments were carried out along the meridional profile across the Brazil
Basin. Based on nannoplankton and diatom assemblages, the sediments represented by oxidized miopelagic clays, differently
reduced hemipelagic clays, and clayey-siliceous (Ethmodiscus) and calcareous (coccolith-foraminiferal) oo...
The distribution of diatoms, radiolarians, planktonic and benthic foraminifers, and sediment components in the fraction >0.125
mm was analyzed in the core obtained from the central Sea of Okhotsk within the frameworks of the Russian-German KOMEX project.
The core section characterizes the period 190–350 ka, which corresponds to marine-isotopic stag...
Distribution of diatoms, radiolarians, planktonic and benthic foraminifers, and sediment components in fraction >0.125 mm was analyzed in a core obtained from the central Sea of Okhotsk within frameworks of the Russian-German KOMEX Project. The core section characterizes the period 190-350 ka, which corresponds to marine-isotopic stages (MIS) 7 to...
Results of a complex micropaleontological research of the samples obtained from a test area on the
North Yamato Rise are presented. Radiolarians, diatoms, and palynocomplexes were examined. Neogene
deposits from the beginning of the Middle Miocene to the end of the Late Miocene were identified. Coastal,
shelf, and slope deposits were recognized wit...
High resolution KOMEX 1998 core LV28-2-4 (4822.730 N 14622.217 E, 1265 m
water depth) is processed for diatoms, planktonic and benthic
foraminifera. Biopro- ductivity changes, surface and deep water
circulation features are detailed for isotope stages 1-3 (last 35 kyr).
The age model is based on previous magnetostratigraphy, oxy- gen isotope
strati...
Paleoceanography of the Central Part of the Sea of Okhotsk over the Past 200 ky (on the Basis of Micropaleontological Data)
M. S. Barash, N. V. Bubenshchikova, G. Kh. Kazarina, and T. A. Khusid
Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, Russia_ ■
Received November 20, 2000
Abstract—The distribution of diatoms and plankto...
Planktonic foraminifers and diatoms were studied in the core obtained on the southeast slope of the Institute of Oceanology Rise. The studied core represents about 190 Kyr of sedimentation. Foraminifera and diatom data made it possible to evaluate paleoceanographic conditions of the upper water layer from the Penultimate continental Glaciation to t...
The development of the diatom flora in the Southern Ocean during the Cretaceous and Paleogene was local in character and was stimulated by local upwelling. During the Neogene-Quaternary, its diatom flora was ubiquitous; it exhibited a gradually increasing endemism, which attained its final form in the late Micoene-early Pliocene. The establishment...
BARASH M.S., DMITRENKO O.B., KAZARINA G.Kh., KRUGLIKOVA S.B.,MUKHINA V.V.,
STRATIGRAPHY OF QUATERNARY OCEANIC DEPOSITS
Quaternary oceanic deposits is the most suitable object for perform¬ing Quaternary stratigraphy as they often contain continuous record of all environmental changes. For this purpose several methods are used: paleomagnetic, oxyge...
Projects
Project (1)
Biostratigraphic subdivision and definition of the Quaternary age of ocean and marine sediments using micropaleontological and other methods. Reconstruction of paleo environment conditions (paleotemperatures, currents, hydrological fronts, distribution of ice, etc..). Correlation. Paleoclimatic reconstructions. Extrapolation of methods to earlier stratigraphic intervals and the corresponding constructions.
