scholarly journals Kurgan Halvay 5 - a complex of Sintashta culture from Northern Kazakhstan

2017 ◽  
Vol 6 (4) ◽  
pp. 131-138
Author(s):  
Andrey Viktorovich Logvin ◽  
Irina Viktorovna Shevnina ◽  
Alina Viktorovna Kolbina
Keyword(s):  
Left Bank ◽  
X Ray ◽  
North East ◽  
The North ◽  
Northern Kazakhstan ◽  
Study Results ◽  
Ceramic Vessels

The paper is devoted to the study results of kurgan Halvay 5, which is located on the left bank of the Tobol branch of the Karatomar Reservoir (Northern Kazakhstan, Kostanay Region) 7 km to the north-east of Halvay and 500 m to the north-east of the Sintashta kurgan Halvay 3. The diameter of the kurgan is 30 m with a moat, the height is 0,8 m. Five burials were recorded under the embankment of the kurgan. All the primary burials of the kurgan Halvay 5 belong to the XXI century BC to Sintashta culture. All the main burials of the kurgan Halvay 5 were robbed in antiquity. The moat after the burial of the deceased (at least at the time of the robbery of the pits) was not filled up for a while. Funerary chambers have an overlapping of boards and logs, their walls are lined with bark and grass, the bottom is also covered with grass and bark. In the course of the study, the following analyses were performed: anthropological, paleozoological, paleobotanical, dendrochronological, X-ray fluorescent (XRF), radiocarbon. The sacrificial complex is represented by cattles, sheeps, and horses. The finds obtained as a result of the study of the kurgan Halvay 5 are: ceramic vessels, a bronze ax-adzo, stone arrowheads, abrasives and a zoomorphic altar. In the kurgan the Early Sarmatian burial was investigated.

scholarly journals Numerically investigating the morphology of the supernova remnant SN 1006 in the ambient medium with a density discontinuity

2019 ◽  
Vol 491 (2) ◽  
pp. 2460-2464 ◽  
Author(s):  
Jun Fang ◽  
Jingwen Yan ◽  
Lu Wen ◽  
Chunyan Lu ◽  
Huan Yu
Keyword(s):  
Supernova Remnant ◽  
Ambient Medium ◽  
X Rays ◽  
X Ray ◽  
North West ◽  
Density Discontinuity ◽  
North East ◽  
The North ◽  
South West ◽  
Type Ia

ABSTRACT Multiband observations on the Type Ia supernova remnant SN 1006 indicate peculiar properties in its morphologies of emission in the radio, optical, and X-ray bands. In the hard X-rays, the remnant is bilateral with two opposite bright limbs with prominent protrusions. Moreover, a filament has been detected at the radio, optical, and soft X-ray wavelengths. The reason for these peculiar features in the morphologies of the remnant is investigated using 3D HD simulations. With the assumption that the supernova ejecta are evolved in the ambient medium with a density discontinuity, the radius of the remnant’s boundary is smaller in the tenuous medium, and the shell consists of two hemispheres with different radii. Along particular line of sights, protrusions appear on the periphery of the remnants since the emission from the edge of the hemisphere with a larger radius is located outside that from the shell of the small hemisphere. Furthermore, the north-west filament of SN 1006 arises as a result of the intersection of the line of sight and the shocked material near the edges of the two hemispheres. It can be concluded that the protrusions on the north-east and south-west limbs and the north-west filament in the morphologies of SN 1006 can be reproduced as the remnants interacting with the medium with a density discontinuity.

Evolution and metallogenic settings of the Pados-Tundra chrome-bearing ultramafic complex, Kola Peninsula: isotope Sm-Nd and U-Pb evidence

2020 ◽  
Author(s):  
Pavel Serov ◽  
Tamara Bayanova ◽  
Ekaterina Steshenko ◽  
Eugenii Kunakkuzin ◽  
Elena Borisenko
Keyword(s):  
Kola Peninsula ◽  
Layered Series ◽  
North East ◽  
The North ◽  
Ultramafic Complex ◽  
Study Results ◽  
Partially Observed ◽  
North Eastern ◽  
Igneous Province ◽  
Enclosing Rocks

<p>The Pados-Tundra massif is located in the western Kola Peninsula and included in the Notozero ultrabasic rock complex (Vinogradov, 1971). The intrusion occurs as a body of ca. 13 km<sup>2</sup> stretched out to the north-east. Enclosing rocks are Archaean granite- and granodiorite-gneisses. There are three major areas in the massif structure (Mamontov, Dokuchaeva, 2005): endocontact area, rhythmically layered series, and upper area. The endocontact area with thickness of 10-20 m occurs as schistose amphibole rocks formed during the metamorphism of main rocks. The rhythmically layered series occurs as a number of rocks from dunites to orthopyroxenites and composes most of the massif. There are 7 rhythms in total, each of which starts with dunites and ends with orthopyroxenites. Dykes of mezo- and leucocratic gabbro, diorites, and hornblendites are developed in the series rocks. The upper gabbronorite area can be partially observed in the north-eastern massif. Presumably, its major volume has been overlapped by enclosing rocks as a result of the overthrust. In the massif, there are 4 horizons of disseminated stratiform chromite ores, which are confined to dunites and serpentinites, as well as to a number of lens- and column-like bodies (podiform type) of chromite ores (Mamontov, Dokuchaeva, 2005; Barkov et al., 2017). Previous isotope-geochronological studies have determined the massif rock age of 2.15 Ga (Shapkin et al., 2008). However, further geological field observations and analysis of the obtained data assume that the intrusive is much older.</p><p>New Sm-Nd geochronological data indicate that the massif rocks and its rhythmically layered series are of Paleoproterozoic age, which is similar to the age of the Cu-Ni-Co-Cr-PGE ore-magmatic system of the Fennoscandian Shield (Amelin et al., 1995; Bayanova et al., 2014, 2017, 2019; Hanski et al., 2001; Huhma et al., 1990, 1996; Layered intrusions ...; 2004; Maier, Hanski, 2017; Mitrofanov et al., 2019; Peltonen, Brugmann, 2006; Puchtel et al., 2001; Serov, 2008; Serov et al., 2014; Sharkov, 2006; Sharkov, Smolkin, 1997). Complex Sm-Nd and U-Pb isotope-geochronological studies have allowed determining the major formation and alteration stages of the Pados-Tundra complex rocks:</p><p>–  formation of the rhythmically layered series rocks of the intrusive 2485±77 Ma, harzburgites of the layered series – 2475±38 Ma;</p><p>– metamorphism of the massif rocks at the turn of 1.95 - 1.9 Ga;</p><p>– postmetamorphic cooling of the complex rocks tо 650°-600°С at the turn of 1872±76 Ma (Sm-Nd for metamorphic minerals) and then to 450°-400°С (U-Pb for rutile, 1804±10 Ma).</p><p>Therefore, the study results expand geography the East-Scandinavian large Palaeoproterozoic igneous province and are prospective for further study of analogous ultramafite-mafite complexes.</p><p>All investigations and were supported by the RFBR 18-05-70082, 18-35-00246, Presidium RAS Program #48 and are in frame of the Theme of Scientific Research 0226-2019-0053.</p>

Wairakite, the calcium analogue of analcime, a new zeolite mineral

1955 ◽  
Vol 30 (230) ◽  
pp. 691-698 ◽  
Author(s):  
A. Steiner
Keyword(s):  
New Zealand ◽  
Hydrothermal Alteration ◽  
New Mineral ◽  
X Ray ◽  
X Ray Crystallography ◽  
Volcanic Region ◽  
North East ◽  
The North

During the study of hydrothermal alteration of cores recovered Dfrom holes drilled at Wairakei during the exploration for geothermal steam, an unusual zeolite mineral was found. Optical, chemical, and X-ray data indicate that this zeolite is a new mineral, the calcium analogue of analcime. The name wairakite is given to the new mineral after the locality Wairakei in New Zealand. Wairakei is situated in the central part of the North Island, approximately 4 miles north-north-east from Lake Taupo, in an active volcanic region. The material was submitted to Dr. D. S. Coombs, Department of Geology, University of Otago, Dunedin, for an investigation of its X-ray crystallography.

scholarly journals Observation of Reconnection Inflow of a Solar Flare

2001 ◽  
Vol 203 ◽  
pp. 344-346
Author(s):  
T. Yokoyama ◽  
K. Akita ◽  
T. Morimoto ◽  
K. Inoue ◽  
J. Newmark
Keyword(s):  
Mach Number ◽  
Solar Flare ◽  
Magnetic Reconnection ◽  
Reconnection Rate ◽  
X Ray ◽  
North East ◽  
The North ◽  
Upper Limit ◽  
Long Duration ◽  
East Limb

We find an important piece of evidence for magnetic reconnection inflow in a flare on March 18, 1999. The flare occurred on the north-east limb, displaying a nice cusp-shaped soft X-ray loop and a plasmoid ejection typical for the long-duration-events. As the plasmoid is ejected, magnetic reconnection occurs at the disconnecting point. A clear ingoing pattern toward the magnetic X-point is seen. The velocity of this apparent motion is about 5 km sec−1, which is an upper limit on reconnection inflow speed. Based on this observation, we derive the reconnection rate as MA = 0.001 − 0.03, where MA is a Alfvén Mach number of the inflow.

Near-isothermal exhumation of lower crust in the Caledonian Orogen: Metamorphic path of kyanite eclogite from the Danmarkshavn area, North-East Greenland Caledonides

2021 ◽  
Author(s):  
Wentao Cao ◽  
Jane Gilotti ◽  
Hans-Joachim Massonne
Keyword(s):  
Local Equilibrium ◽  
East Greenland ◽  
Equilibrium Modeling ◽  
X Ray ◽  
North East ◽  
The North ◽  
Garnet Core ◽  
The Matrix ◽  
Area North ◽  
Peak Assemblage

<p>Kyanite eclogite from the North-East Greenland Caledonides – the upper plate of the Caledonian orogeny – preserves a mineral assemblage and petrographic texture that are consistent with an initial near-isothermal exhumation path. Two medium-grained kyanite eclogites from the Danmarkshavn area (76°46’N, 18°40’W) located west of the Germania Land shear zone contain the peak assemblage of garnet + omphacite + kyanite + phengite + amphibole + rutile. Subhedral garnet encloses monomineralic omphacite and polymineralic inclusions of clinopyroxene + plagioclase ± quartz ± amphibole ± K-feldspar ± kyanite. X-ray mapping of garnet indicates a homogenous core with a composition of Py<sub>51–52</sub>Alm<sub>28–29</sub>Gr<sub>19–20</sub>Sp<sub>0–1</sub>, along with a slightly zoned rim of Py<sub>54</sub>Alm<sub>31</sub>Gr<sub>15</sub>Sp<sub>1</sub> that is replaced by a corona of symplectitic amphibole + plagioclase. Omphacite (X<sub>Na</sub> up to 0.41), rarely present in the matrix, is indicated by symplectite of clinopyroxene + amphibole + plagioclase. Symplectites of corundum + plagioclase, spinel + plagioclase and sapphirine + plagioclase replace former kyanite. These symplectites are typically surrounded by a plagioclase corona with decreasing Ca (from X<sub>An</sub> = 92–97 to X<sub>An</sub> = 47–53) from the symplectite to the matrix. Isochemical phase equilibrium modeling along with homogenous garnet core and peak omphacite compositions yielded a peak metamorphic pressure-temperature (<em>P-T</em>) condition at 1.9 GPa, 840 ˚C. Assuming local equilibrium at the microscopic scale, an attempt to model a symplectite of spinel + sapphirine + plagioclase after kyanite using a pseudosection yielded estimated <em>P-T</em> conditions at 0.8–1.3 GPa and 700–900 ˚C. Integrating the calculated <em>P-T</em> conditions and previous geochronological results, an initial exhumation path from 1.9 GPa to ~1.0 GPa from ~415–390 Ma to ~375 Ma is nearly isothermal at around 800 ˚C.</p>

The Flint Gravel Deposit of Orleigh Court, Buckland Brewer, North Devon

1937 ◽  
Vol 74 (7) ◽  
pp. 309-316 ◽  
Author(s):  
Inkermann Rogers ◽  
Brian Simpson
Keyword(s):  
Average Distance ◽  
Good Deal ◽  
Left Bank ◽  
The South ◽  
North East ◽  
The North ◽  
South West ◽  
North Eastern ◽  
Low Levels ◽  
Gravel Deposit

The deposit to be described is situated at Orleigh Court, in the parish of Buckland Brewer, some four miles west of south from Bideford, where it rests unconformably on the steeply dipping Upper Culm sandstones. Its greatest extent is from Orleigh Mill to Yeo Bridge, a distance of about three-quarters of a mile in a northwest to south-east direction, and from this line it extends to the south-west for an average distance of about one-third of a mile, only exceeding that amount to the south of the Higher Lodge. The only extensive section was seen in the Rookery, where 25 feet of material rest on a yellow clay. The highest point reached by the deposit, to the south-west of the Higher Lodge, is about 400 feet above O.D. From this point it slopes to the north-east, extending down to about the 100 ft. contour on the left bank of the River Yeo. It is possible that the north-eastern boundary does not reach such low levels as those indicated on the map, Text-fig. 1, for it is difficult to distinguish the original gravel from relatively recent hill wash; and, without a good deal of trenching or augering, it would not be possible to determine the boundary more closely than has been done in the present work.

scholarly journals An X-ray and Radio Study of the Hubble Frontier Field Cluster Abell S1063

2021 ◽  
Author(s):  
Majidul Rahaman ◽  
Ramij Raja ◽  
Abhirup Datta ◽  
Jack O Burns ◽  
Brian Alden ◽  
...  
Keyword(s):  
Surface Brightness ◽  
Large Scale ◽  
High Fidelity ◽  
Radio Flux ◽  
X Ray ◽  
Radio Halo ◽  
Average Temperature ◽  
North East ◽  
The North ◽  
Cluster Of Galaxies

Abstract We present results from Chandra X-ray observations and 325 MHz Giant Metrewave Radio Telescope (GMRT) observations of the massive and X-ray luminous cluster of galaxies Abell S1063. We report the detection of large-scale “excess brightness” in the residual Chandra X-ray surface brightness map, which extends at least 2.7 Mpc towards the north-east from the center of the cluster. We also present a high fidelity X-ray flux and temperature map using Chandra archival data of 122 ksec, which shows the disturbed morphology in the cluster. The residual flux map shows the first observational confirmation of the merging axis proposed in earlier simulations. The average temperature within R500 is 11.7 ± 0.56 keV, which makes AS1063 one of the hottest clusters in the nearby Universe. The integrated radio flux density at 325 MHz is found to be 62.0 ± 6.3 mJy. The integrated spectrum of the radio halo follows a power-law with a spectral index α = −1.43 ± 0.13. The radio halo is found to be significantly under-luminous, which favored for both the hadronic as well as the turbulent re-acceleration mechanism for its origin.

scholarly journals Adaptive potential of the hulled oats gene pool according to 1000-grain weight

2021 ◽  
pp. 3-8
Author(s):  
M. V. Tulyakova ◽  
G. A. Batalova ◽  
S. V. Permyakova
Keyword(s):  
Environmental Conditions ◽  
Grain Weight ◽  
North East ◽  
The North ◽  
Temperature And Precipitation ◽  
Study Results ◽  
Growing Conditions ◽  
Adaptability Parameters ◽  
High Level ◽  
1000 Grain Weight

There have been presented the study results of 11 collection hulled oats samples in comparison with the standard variety ‘Krechet’ conducted at the Falenskaya selection station of the FARC the North-East (the Kirov region) in 2018–2020. The purpose of the current study was to identify sources stable on the trait ‘1000-grain weight’ for the breeding of hulled oats by estimating the adaptability parameters. The soil of the experimental plot was sod-podzolic, medium loamy, the meteorological conditions were contrasting in temperature and precipitation. In the favorable year of 2019, the 1000-grain weight was the highest (34.6–45.9 g), the index of environmental conditions was positive (Ij = 1.6). In the unfavorable year of 2020, the 1000-grain weight was 31.3–41.8 g and the index of environmental conditions was negative (Ij = -1.5). There have been identified the adaptable sources (IEP = 1.08–1.00) ‘15330 KSI 590/05’ (Russia), ‘15388 Saltaret’ (Moldova), ‘15423 Prelekst’, ‘15426 Werva’ (Germany); the stable sources according to the relative stability of the trait (St2 = 0.99–0.91) ‘15280 55 h 2106’, ‘15331 CSI 2167/03’ (Russia), ‘15297 Geszti’ (Hungary), ‘15388 Saltaret’ (Moldova), ‘15428 Bohum’ (Poland), ‘15420 Leniak’ (Germany); the sources with a high level of intensity (I = 24.5 and 19.30%) – ‘15329 CSI 639/05’, ‘15330 CSI 590/05’ and homeostaticity (Hom = 25.28–11.96) ‘15280 55 h 2106’ (Russia), ‘15297 Geszti’ (Hungary), ‘15388 Saltaret’ (Moldova); the sources responsive to favorable growing conditions (Kp = 1.11–1.28) ‘15329 KSI 639/05’, ‘15330 KSI 590/05’, ‘15331 KSI 2167/03’ (Russia), ‘15414 Enostar’ (Germany); the most adaptive sources in terms of the sum of ranks ‘15330 CSI 590/05’ and ‘15329 CSI 639/05’ (Russia), ‘15388 Saltaret’ (Moldova), ‘15426 Werva, ‘15414 Enostar’ (Germany). There have been identified significant direct correlations between indicators of stability and homeostaticity (r = 0.96), intensity and coefficient of responsiveness (r = 0.73).

scholarly journals Ethnic Minorities’ Migration Trends in Central Highland

2019 ◽  
Author(s):  
Ha Viet Hung
Keyword(s):  
Ethnic Minorities ◽  
Data Sets ◽  
Rural Migrants ◽  
Highland Region ◽  
North East ◽  
The North ◽  
Urban Migrants ◽  
Study Results ◽  
Central Highland ◽  
Destination Area

Migration of ethnic minorities in Central Highland region is a big concern of the policymakers as well as the social researchers. Based on the analysis of data from two Vietnam internal migration surveys taken in 2004 and 2015, the Central Highland had been a destination area for a majority of ethnic minorities’ rural-rural migrants. The study shows that the size of voluntary migrants came to the Central Highland region is strongly decreasing over the last five years. In contrast, there appeared an increasing group of voluntary migrants come out from the Central Highland to other regions, especially the North-East, looking for a job, income-earning for their households. The number of rural-urban migrants is increasing while the number of rural-rural migrants is decreasing among the ethnic minorities’ migrants. The share of temporary migrants is becoming dominant over the permanent ones in both in- and out-migration in the Central Highland region. The main purpose of the movement is seeking a job, income earning. By analyzing the existing data sets, it shows a significant impact of migrants’ education on their decision of movement. The study results may contribute to estimate the migration trend and serve as evidence for the ethnic minorities’ policymaking on the period from now to 2030.

scholarly journals «Terek stockaded town, Terek redoubt, Terki?...» (the role of Terek in the history of the North-Eastern Caucasus in the XVI-XVII centuries)

2017 ◽  
Vol 6 (2) ◽  
pp. 125-131
Author(s):  
Nina Nurmagomedovna Garunova ◽  
Irina Anatolievna Suzdaltseva ◽  
Lilia Nadipovna Galimova
Keyword(s):  
Reference Points ◽  
Left Bank ◽  
North East ◽  
The North ◽  
Initial Stage ◽  
Russian State ◽  
North Eastern ◽  
History Of ◽  
The City

This article examines the history of the disappeared Russian settlement-fortress, which refers to the period XVI-XVIII centuries. In earlier sources the city was called the redoubt of the Terek, the Terek fortress, sometimes there is a shorter name -Grater. Later they began to use the name Terek the city, represents the city and fortress near the mouth of the Terek, not far from the now not-existing of the river Tyumenka. In the modern period is the territory of the left Bank of the Old Terek to the North-East of the city of Kizlyar, Republic of Dagestan. Criticized the attempts to identify the history of the two fortresses: Walled town and Floats, as well as their role at the initial stage in the formation of Russian population of Dagestan. Characterized by the influence of the process of renewal of the Cossacks in military servicemen estate on the historical development of areas North-Eastern Caucasus. Attention is paid to issues such as the existence of different versions of the city name, the location where divergent opinions of researchers. Emphasis is placed on the role of the Terek city as the southern Outpost of the Russian state, the conductor's Caucasus policy on the North-Eastern Caucasus. The analysis of the problem, which allowed us to consider the integration of the provincial regions in the periphery of the Russian state in the South of the country, and analyzed the development of reference points to spread the influence of Russia in the XVI-XVII centuries.

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