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  • 1
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    On the role of cryosoles in accumulation of recent Arctic bottom sediments (in Russian) (1995)
    Mezhdunarodnaya Kniga
    In:  Doklady Akademii Nauk (Reports of the Russian Academy of Sciences), 344 (4). pp. 506-509.
    Details
    Publication Date: 2019-09-23
    Type: Article , NonPeerReviewed
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    PAPER (OCEANREP)
  • 2
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    Speciation of metals in bottom sediments from the south Kara Sea and Ob and Yenisei estuarine zones
    PANGAEA
    In:  Supplement to: Demina, Lyudmila L; Levitan, Mikhail A; Politova, Nadezhda V (2006): Speciation of some heavy metals in bottom sediments of the Ob and Yenisei estuarine zones. Geochemistry International, 44(2), 182-195, https://doi.org/10.1134/S0016702906020078
    Details
    Publication Date: 2023-05-12
    Description: Speciation of Fe, Mn, Zn, Cu, Co, Ni, Cr, Pb, and Cd was studied in 52 samples of bottom sediments collected during Cruise 49 of the R/V "Dmitry Mendeleev" to the estuaries of the Ob and Yenisei rivers and to the southwest Kara Sea. Immediately after sampling the samples were subjected to on-board consecutive extraction to separate metal species according to their modes of occurrence in the sediments: (1) adsorbed, (2) amorphous Fe-Mn hydroxides and related metals, (3) organic + sulfide, and (4) residual, or lithogenic. Atomic absorption spectroscopy of the extracts was carried out at a stationary laboratory. Distribution of Fe, Zn, Cu, Co, Ni, Cr, Pb, and Cd species is characterized by predominance of lithogenic or geochemically inert modes (70-95% of bulk contents), in which the metals are bound in terrigenous and clastic mineral particles and organic detritus. About half of total Mn amount and 15-30% of Zn and Cu are contained in geochemically mobile modes. Spatiotemporal variations in proportions of the metal species in the surface layer of sediments along sub-meridional sections and through vertical sections of bottom sediment cores testify that Mn and, to a lesser extent, Cu are the most sensitive to changes in sedimentation environment. The role of their geochemically mobile species notably increases under reducing conditions.
    Keywords: Archive of Ocean Data; ARCOD; BC; Box corer; DM49; DM49-4394-1; DM49-4395-1; DM49-4396-1; DM49-4397-2; DM49-4398-1; DM49-4399-1; DM49-4401-3; DM49-4406-1; DM49-4408-1; DM49-4409-1; DM49-4410-1; DM49-4411-1; DM49-4412-1; DM49-4413-1; DM49-4413-3; DM49-4414-2; DM49-4415-2; DM49-4416-1; DM49-4417-2; DM49-4418-1; Dmitry Mendeleev; GC; Grab; GRAB; Gravity corer; Kara Sea; Men4400-1; Men4402-1; SPASIBAIII
    Type: Dataset
    Format: application/zip, 6 datasets
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    DATA PANGAEA
  • 3
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    Composition of bottom sediments from the Isfjord, Western Svalbard
    PANGAEA
    In:  Supplement to: Levitan, Mikhail A; Levchenko, Oleg V; Murdmaa, Ivar O; Peresypkin, Valery I; Roshchina, I A; Tolmacheva, A V (2008): History of sedimentation in Isfjord (Western Spitsbergen). Translated from Litologiya i Poleznye Iskopaemye, 2008, 6, 578-600, Lithology and Mineral Resources, 43(6), 520-541, https://doi.org/10.1134/S0024490208060023
    Details
    Publication Date: 2023-05-12
    Description: Lithology, heavy mineral associations, and chemical composition of bottom sediments studied in two gravity cores from Isfjord, Western Spitsbergen (Svalbard) accompanied by high-frequency seismic records, provide a new insight on provenance and glaciomarine sedimentation in the fjord from the last deglaciation through Holocene.
    Keywords: Archive of Ocean Data; ARCOD
    Type: Dataset
    Format: application/zip, 5 datasets
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  • 4
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    Radiocarbon ages, δ¹³C values and rare earth element content of sediment cores BP00-23/07 and BP00-07/06
    PANGAEA
    In:  Supplement to: Levitan, Mikhail A; Bourtman, Maria V; Demina, Lyudmila L; Krupskaya, Viktoria V; Sedykh, E M; Chudetsky, MYu (2004): History of Holocene sedimentation in the southern Kara Sea. Lithology and Mineral Resources, 39(6), 566-579, https://doi.org/10.1023/B:LIMI.0000046959.42527.71
    Details
    Publication Date: 2023-05-12
    Description: Two bottom sediment cores (BP00-23/7 and BP00-7/6) recovered from the Yenisei transect in the southern Kara Sea are described. Data on their grain size composition, clay and heavy mineral assemblages, and distribution of a large group of chemical elements are presented. Radiocarbon dates based on AMS C-14 method suggest the Holocene age of sediments in the cores. Literature data on physical properties and foraminifers have also been analyzed. The facies affiliation of the lithostratigraphic subdivisions has been unraveled. History of the Yenisei River runoff in the Holocene has been reconstructed on the basis of different indicators.
    Keywords: Archive of Ocean Data; ARCOD
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 5
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    Stable isotope record of foraminifera from the Barents Sea
    PANGAEA
    In:  Supplement to: Duplessy, Jean-Claude; Cortijo, Elsa; Ivanova, Elena V; Khusid, Tatyana A; Labeyrie, Laurent D; Levitan, Mikhail A; Murdmaa, Ivar O; Paterne, Martine (2005): Paleoceanography of the Barents Sea during the Holocene. Paleoceanography, 20(4), PA4004, https://doi.org/10.1029/2004PA001116
    Details
    Publication Date: 2023-05-12
    Description: We measured the oxygen isotopic composition of planktonic and benthic foraminifera in three cores collected at key positions to reconstruct the paleoceanography of the Barents Sea: core ASV 880 on the path of the northern branch of Atlantic water inflowing from the Arctic Ocean, core ASV 1200 in the central basin near the polar front, and core ASV 1157 in the main area of brine formation. Modern seawater d18O measurements show that far from the coast, d18O variations are linearly linked to the salinity changes associated with sea ice melting. The foraminifer d18O records are dated by 14C measurements performed on mollusk shells, and they provide a detailed reconstruction of the paleoceanographic evolution of the Barents Sea during the Holocene. Four main steps were recognized: the terminal phase of the deglaciation with melting of the main glaciers, which were located on the surrounding continent and islands, the short thermal optimum from 7.8 ka B.P. to 6.8 ka B.P., a cold mid-Holocene phase with a large reduction of the inflow of Atlantic water, and the inception of the modern hydrological pattern by 4.7 ka B.P. Brine water formation was active during the whole Holocene. The paleoclimatic evolution of the Barents Sea was driven by both high-latitude summer insolation and the intensity of the Atlantic water inflow.
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 6
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    Clay mineral distribution in surface sediments
    PANGAEA
    In:  Supplement to: Nürnberg, Dirk; Levitan, Mikhail A; Pavlidis, Yury A; Shelekhova, E S (1995): Distribution of clay minerals in surface sediments from the eastern Barents and south-western Kara seas. Geologische Rundschau, 84(3), 665-682, https://doi.org/10.1007/BF00284528
    Details
    Publication Date: 2023-05-12
    Description: Surface samples from the eastern Barents and south-western Kara seas have been analysed for clay mineralogy. Transport paths, the role of regional sources and local bedrock outcrops and the influence of hydrodynamic and glacigenous processes for clay distribution on the shelves are discussed in relation to central Arctic Ocean deep sea and sea ice sediments. Franz Josef Land and Novaya Zemlya show significantly different clay mineral associations. Although smectite concentrations are fairly high, Franz Josef Land can be excluded as a source for central Arctic sea ice sediments, which are relatively rich in smectite. In the Kara Sea, smectite concentrations in coastal sediments surpass even the Franz Josef Land concentrations. The large cyclonic gyre in the eastern Barents Sea between Novaya Zemlya and Franz Josef Land, which serves as a mixing zone between Arctic and North Atlantic water, is apparently reflected within the smectite distribution pattern. With the exception of Franz Josef Land, the area of investigation is typically low in kaolinite. In particular, coastal areas and areas north of Novaya Zemlya, influenced by the inflow of Arctic waters, show the lowest kaolinite concentrations. A high kaolinite occurrence within the Nansen Basin is most probably related to Franz Josef Land and emphasizes the importance of long-range downslope transport of sediments across the continental slope. The surface water circulation pattern in close interaction with local outcrops onshore Novaya Zemlya and locally restricted occurrences within the eastern Barents Sea significantly alter the illite dispersal pattern. Illite concentrations are lowest around Franz Josef Land. Chlorite is generally low in the area of investigation. Submarine outcrops and important chlorite occurrences onshore Novaya Zemlya bias its distribution pattern.
    Keywords: 01091-1; 10911; 180811; 18081-1; 180821; 18082-1; 190811; 19081-1; 200811; 20081-1; 200822; 20082-2; 200831; 20083-1; 210821; 21082-1; 210842; 21084-2; 220811; 22081-1; 220822; 22082-2; 230812; 23081-2; 240811; 24081-1; 250811; 25081-1; 260811; 26081-1; 270811; 27081-1; 270822; 27082-2; 280811; 28081-1; 300811; 30081-1; 300821; 30082-1; 300831; 30083-1; 310822; 31082-2; AWI_Paleo; Barents Sea; Camp; Chejsa Island; Chlorite; Dalniye Zelentsy; DEPTH, sediment/rock; DZ-68; Elevation of event; Event label; Giant box corer; GKG; Grain size, sieving/settling tube; Greem Bell Island; Hooker Island; Illite; Kaolinite; Kara Sea; Klagenfurt; Latitude of event; Longitude of event; Nordenskiöld Bay; off Franz Joseph Land; off Novaja Zemlya; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Professor Shtokman; Quaternary Environment of the Eurasian North; QUEEN; Russian Bay; SHT1265; SHT1266; SHT1267; SHT1268; SHT1269; SHT1271; SHT1272; SHT1273; SHT1275; SHT1277; SHT1280; SHT1282; SHT1284; SHT1286; SHT1289; SHT1292; SHT1293; SHT1294; SHT1295.1; SHT1295.2; SHT1298; SHT1299; SHT1300; SHT1301; SHT1302; SHT1303.1; SHT1303.2; SHT1305; SHT1306; SHT1307.1; SHT1307.2; SHT1308; SHT1310; SHT1311; SHT1317; SHT1322; SHT1323.1; SHT1323.2; SHT1324; SHT1325; SHT1326; SHT1327; SHT1328; SHT1332; SHT1333; SHT1334; SHT1335; SHT1339; SHT1341; SHT1342; SHT1343; SHT1346; SHT1350; SHT1352; SHT1367; SHT1369; SHT1371; SHT1372; SHT1373; SHT1374; SHT1375; SHT1376; SHT1378; SHT1379; SHT1380; SHT1381; SHT1382; SHT1385; SHT1386; SHT1387; SHT1388; SHT1389; SHT1391; SHT1394; SHT1395; SHT1396; SHT1397; SHT1399; SHT1400; SHT1401; SHT1402; SHT1403; SHT1407; SHT1409; SHT1412; SHT2146; SHT2149; SHT2163; SHT2167; SHT594; SHT595; SHT8/10/12; Size fraction 〈 0.001 mm, clay; Smectite; van Veen Grab; Velkitsky Bay; VGRAB; Water sample; Wiener Neustadt; WS; X-ray diffraction TEXTUR, clay fraction
    Type: Dataset
    Format: text/tab-separated-values, 540 data points
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  • 7
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    Radiocarbon dating of mollusk shells from southern Kara Sea sediments
    PANGAEA
    In:  V.I. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Moscow
    Details
    Publication Date: 2023-05-12
    Description: Riverine water and sediment discharge to the Arctic Ocean is among the most important parameters influencing Arctic climate. It is clear that the evaluation of Arctic paleoclimate requires information on the paleodischarge of major rivers entering the sedimentation basin. Presently, the water discharge of the Ob River accounts for about 12% of the total input of river water into the Arctic Ocean. During the investigation of the Kara Sea in the framework of the Russian-German SIRRO Project, the history of Yenisei discharge received much attention in a number of publications. This paper presents the results of lithological and geochemical investigations with application to the Holocene discharge of the Ob River. Qualitative (SiO2, Al2O3, K2O, and some modules) and quantitative (sedimentation rates and absolute masses of sedimentary material) parameters were used to characterize the history of the Ob sediment discharge. It was shown that the investigated paleochannels of the Ob were initiated at the Pleistocene-Holocene boundary, and during the first half of the Holocene, the river discharge decreased irregularly with decreasing age of sediments. The observed maxima are in fairly good agreement with the data for the Yenisei. We proposed a hypothesis on the influence of glacioisostatic movements in the marginal region of the former Kara ice sheet of late Valdai age on the cessation of marine-fluvial glaciation in the paleochannels of Ob and Yenisei in the periphery of the Ob-Yenisei shoal.
    Keywords: Akademik Boris Petrov; Archive of Ocean Data; ARCOD; BP03; BP03-07/06; BP03-19/06; GC; Gravity corer; Kara Sea
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    Format: application/zip, 2 datasets
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  • 8
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    Organic carbon and its diagenetic losses in bottom sediments from the Bering Sea
    PANGAEA
    In:  Supplement to: Marina, Mariya M; Levitan, Mikhail A; Lyutsarev, Sergey V (1984): Organic carbon in Holocene deposits of the northwestern Bering Sea shelf. Oceanology, 24(2), 221-224
    Details
    Publication Date: 2023-05-12
    Description: New data obtained in a shipboard laboratory are used to illustrate effect exerted by lithology of enclosing rock and by early diagenesis on residu¬al organic carbon content of Holocene deposits on the northwestern Bering Sea shelf. Loss of organic carbon is found to total 8-12% in the upper 10-15 cm of sediments and about 22% in the upper 1 m that agrees with data obtained for other areas by independent methods.
    Keywords: Archive of Ocean Data; ARCOD; Bering Sea; DM29-2534; DM29-2537; DM29-2538; DM29-2539; DM29-2540; DM29-2542; DM29-2546; DM29-2548; DM29-2549; DM29-2550; DM29-2562; DM29-2564; MULT; Multiple investigations
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 9
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    Composition of sedimentary rocks from the Mountainous Crimea and the Northwestern Caucasus
    PANGAEA
    In:  Supplement to: Levitan, Mikhail A; Alekseev, A S; Badulina, N V; Girin, Yury P; Kopaevich, L F; Kubrakova, I V; Tyutyunnik, O A; Chudetsky, MYu (2010): Geochemistry of Cenomanian/Turonian boundary sediments in the mountainous part of Crimea and the Northwestern Caucasus. Translated from Geokhimiya, 2010, 48(6), 570-591, Geochemistry International, 48(6), 534-554, https://doi.org/10.1134/S0016702910060029
    Details
    Publication Date: 2023-05-12
    Description: Detailed data obtained on chemistry of sedimentary rocks from the Mountainous Crimea and the Northwestern Caucasus that were dated at the Cenomanian/Turonian boundary and formed during Oceanic Anoxic Event 2 make it possible to calculate dissolved oxygen concentration in bottom waters of the sedimentation basin. Enrichment factors of trace elements in black shales are revised and an explanation is suggested for genesis of the rocks with regard for unusual climatic changes.
    Keywords: Archive of Ocean Data; ARCOD
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 10
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    Composition of sedimentary material from the bottom and the area surrounding the Lake Untersee, East Antarctica
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Description: This paper presents data on geographic and geologic conditions of modern sedimentation in the Lake Untersee, the largest lake in the East Antarctica. Geochemical and sedimentation data indicate that the leading mechanism supplying aluminosilicate sedimentary material to the surface layer of bottom sediments is seasonal melting of the Anuchin glacier and the mountain glacier on the southeastern part of the valley hosting the lake. Strongly reduced conditions in the lowermost 25 m of the water column in the smaller of two depressions of the lake bottom were favorable for enrichment of the bottom sediments in bacteriogenic organic matter, Mo, Au, and Pd. H2S-contaminated water results to significant enrichment of the sediments only in redox-sensitive elements that are able to migrate in anionic complexes and precipitate (co-precipitate) as sulfides.
    Keywords: Archive of Ocean Data; ARCOD
    Type: Dataset
    Format: application/zip, 9 datasets
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