scholarly journals Holocenní sedimentární pánev mezi Židlochovicemi a Blučinou na severozápadním okraji Výhonu

2020 ◽  
Vol 27 (1-2) ◽  
Author(s):  
Martin Hanáček ◽  
Jan Petřík ◽  
Jarmila Bíšková ◽  
Richard Bíško ◽  
Katarína Adameková ◽  
...  

The studied area is located in a small basin between between Strže („Cézavy“) and Výhon hills. The „Cézavy“ site is an important Bronze Age enclosed settlement. Geological setting was examined by coring and electric resistivity tomography. Selected horizons were dated by C14 method. Holocene infill of basin is composed of two sedimentary units: intra-basin facies of dark coloured lacustrin-swamp clayey-silty sediments and marginal facies of clayey-silty-sandy sediments. Basin of assymetrical shape is deepest near foothill of „Cezávy“, where started infilling of basin as soon as ~3600 BP or earlier. The basin is delimited by bodies of Miocene rocks. Geochronological model shows existence of swamps-lacustrine basins in a time span since 17th century BC till 18th centuriy AD. It indicates, that main cause that filled the basin is individual landslides. Every landslide event caused new spatial configuration of basins and elevations. Last significant events were probably extensive, historically recorded landslides in 70‘s of 18th century. Recent morphology was formed as late as in 19th century.

2014 ◽  
Vol 53 (4) ◽  
pp. 425-434 ◽  
Author(s):  
René E. Chávez ◽  
Gerardo Cifuentes-Nava ◽  
J. Esteban Hernández-Quintero ◽  
Diana Vargas ◽  
Andrés Tejero

2019 ◽  
Vol 18 (3) ◽  
pp. 62-73
Author(s):  
A. N. Chekha

Purpose. There are many archaeological sites located in the North Angara region. Although this territory has been investigated since 18th century, most intensive work was done during rescue archaeological works on Boguchany hydroelectric power station in 2008–2011. One of the valuable sources of artifacts is the Kutarey site. Our work contains a brief analysis of stone industries of the Kutarey River Mouth site. The main goal of this work is to apply technical and typological analysis to mark the specificity of the stone industries of layer 2 of the Kutarey River Mouth site in comparison with the results that had been previously published on layer 3 in the context of new data of this region in terms of ceramics complexes. We introduce a previously unpublished collection of stone artifacts of layer 2 of the Kutarey River Mouth site, which significantly extends the source base of the Neolithic and Bronze Age in this region. Results. The Kutarey River Mouth site is located on the left bank of the Angara River, 15 km down from the Kezhma village, on the right bank of the Kutarey River. The location was found in 1974 by N. I. Drozdov and his squad. The site was further investigated in 2008 and in 2010 by an IAE SB RAS squad (guided by A. N. Savin). Firstly, the site was determined as a Neolithic location, but as result of 2010 excavations three Neolithic-Middle Age cultural horizons were discovered. In the context of the difficulties connected with conducting investigations in this region, namely an open location, a low stratigraphy situation, a high extend of technogenic interruption, the materials of layer 3 are most perspective due to a high grade of saturation of the artifacts and minimal technogenic interruptions. These materials belong to the Neolithic and Paleometal Era. In order to clarify cultural and chronological specificity of this complex, it is necessary to analyze materials from layer 2. The stone industry of layer 2 is represented by retouching microblades, bladelets, tools for blades, flakes, scrapers including one microscraper, bifaces, several adzes, axes, and one piercing tool. Of special interest are blade points and trihedral and tetrahedral points. Conclusion. Our technical and typological analyses show that in comparison to layer 3, layer 2 is characterized by a small number of massive axes and adzes, no flints, few double scrapers, and only volume splitting tools aimed mainly at obtaining a small blade. Also, despite the fact that the core of the collection is the product of the hornstones of local origin, we observe a significant increase in the percentage of artifacts made of flint (13 %), which may indicate some new commodity strategies. The most interesting analogy can be traced with the dedicated Upper Kolyma Early Holocene complex, which contained blade points widely distributed in Northeast Asia and was present directly or indirectly in the materials from Chukotka (Verkhnetirsky IV and Nizhnechutinsky IV), Yakutia (Olbinski burial ground, Jubilee), Kamchatka (the Ushki I–IV layer, Avacha 1,9). This complex is believed to belong to specific Volbinsky traditions, which formed in the first half of the Holocene, about 8800–6000 years ago. It is also worth comparing these materials with other Kutarey sites – Sen’kin (Siniy) Kamen’, Ruchei Povarny, Gora Kutarey and adjacent territories.


2021 ◽  
Vol 593 ◽  
pp. 125810
Author(s):  
Matthias Leopold ◽  
Conrad Gupanis-Broadway ◽  
Andy Baker ◽  
Stuart Hankin ◽  
Pauline Treble

2020 ◽  
Vol 12 (13) ◽  
pp. 2132
Author(s):  
Annika Fediuk ◽  
Dennis Wilken ◽  
Martin Thorwart ◽  
Tina Wunderlich ◽  
Ercan Erkul ◽  
...  

We investigate the applicability of offshore geoelectrical profiling in the littoral zone, e.g., for archaeological prospection, sediment classification and investigations on coastal ground water upwelling. We performed field measurements with a 20 m long multi-electrode streamer in inverse Schlumberger configuration, which we used to statistically evaluate measurement uncertainty and the reproducibility of offshore electric resistivity tomography. We compared floating and submerged electrodes, as well as stationary and towed measurements. We found out that apparent resistivity values can be determined with an accuracy of 1% to 5% (1σ) depending on the measurement setup under field conditions. Based on these values and focusing on typical meter-scale targets, we used synthetic resistivity models to theoretically investigate the tomographic resolution and depth penetration achievable near-beach underneath a column of brackish water of about 1 m depth. From the analysis, we conclude that offshore geoelectric sounding allows the mapping of archaeological stone settings. The material differentiation of low-porosity rock masses < 15% is critical. Submerged wooden objects show a significant resistivity contrast to sand and rocks. Distinguishing brine-saturated sandy sediments from cohesive silty-clayey sediments is difficult due to their equal or reversed resistivity contrasts. Submarine freshwater discharges in sandy aquifers can be localized well, though difficulties may occur if the seafloor encounters massive low-porosity rock masses. As to the measurement setups, submerged and floating electrodes differ in their spatial resolution. Whereas stone settings of 0.5 to 1 m can still be located with submerged electrodes within the uppermost 4 m underneath the seafloor, they have to be >2 m if floating electrodes are used. Therefore, we recommend using submerged electrodes, especially in archaeological prospection. Littoral geological and hydrogeological mapping is also feasible with floating electrodes in a more time-saving way.


2019 ◽  
Vol 265 ◽  
pp. 03005
Author(s):  
Dmitriy Gorbach ◽  
Valeriya Yakimenko ◽  
Olga Konovalova

The paper reviews methods of engineering geophysics which can be applied to sections of railway tracks. The method of electrical resistivity tomography is used to study the properties of the geological situation under an engineering structure. In the course of practical work, two-dimensional geoelectric sections were obtained. Interpretation of the sections allowed to understand the structure of the near-surface zone.


2010 ◽  
Vol 40 (6) ◽  
pp. 1189-1193 ◽  
Author(s):  
Dirk Bieker ◽  
Steffen Rust

Electric resistivity tomograms of English oak ( Quercus robur L.) show a very distinct pattern of electric resistivity that has not been found in any other tree species yet and that cannot be related to the distribution of wood moisture content over the stem cross section. To reveal the factors underlying this two-dimensional pattern of electric resistivity, the variation of specific gravity and wood moisture content was analyzed in 18 cross sections of six roadside English oak trees after electric resistivity tomography. pH and electrolyte content were analyzed in two representative cross sections. Results show that electric resistivity correlates neither with wood moisture content nor density. The steep increase in electric resistivity at the sapwood–heartwood boundary correlates well with decreasing pH, potassium, and magnesium. The decreasing electric resistivity within the heartwood of English oak correlates with potassium and magnesium, increasing from the sapwood–heartwood boundary to the pith. More research is needed to identify species-specific electric resistivity patterns and their main factors if the method is to be used to detect wood fungal decay, historical ground water contamination, or other influences that may change the pattern of electric resistivity in the stem cross section.


Geophysics ◽  
2012 ◽  
Vol 77 (1) ◽  
pp. B11-B21 ◽  
Author(s):  
Thomas Hermans ◽  
Alexander Vandenbohede ◽  
Luc Lebbe ◽  
Frédéric Nguyen

Groundwater resources are increasingly used around the world for geothermal exploitation systems. To monitor such systems and to estimate their governing parameters, we rely mainly on borehole observations of the temperature field at a few locations. Bulk electric resistivity variations can bring important information on temperature changes in aquifers. We have used surface electric resistivity tomography to monitor spatially temperature variations in a sandy aquifer during a thermal injection test. Heated water (48°C) was injected for 70 hours at the rate of [Formula: see text] in a 10.5°C aquifer. Temperature changes derived from time-lapse electric images were in agreement with laboratory water electric conductivity-temperature measurements. In parallel, a coupled hydrogeologic saturated flow and heat transport model was calibrated on geophysical data for the conceptual model, and on hydrogeologic and temperature data for the parameters. The resistivity images showed an upper flow of heated water along the well above the injection screens and led to a new conceptualization of the hydrogeologic source term. The comparison between the temperature models derived from resistivity images and from the simulations was satisfactory. Quantitatively, resistivity changes allowed estimating temperature changes within the aquifer, and qualitatively, the heated plume evolution was successfully monitored. This work demonstrates the ability of electric resistivity tomography to study heat and storage experiments in shallow aquifers. These results could potentially lead to a number of practical applications, such as the monitoring or the design of shallow geothermal systems.


2016 ◽  
Vol 43 (1) ◽  
pp. 121-130
Author(s):  
Ioannis Liritzis ◽  
Nikolaos Zacharias ◽  
Fahad Al-Otaibi ◽  
Ioannis Iliopoulos ◽  
Christos Katagas ◽  
...  

Abstract The Nawamis are sandstone-built circular structures, located at several sites across Southern Sinai, Egypt. They are thought to be family tombs, created by the nomadic people that inhabited the area. Archaeological age estimates fall within the Early to Late Bronze Age. Here an interesting suite of nine OSL dates of three stone pieces has been resulted, from two Nawamis at Gebel Gunna and Ain Khodra fields. Single aliquot regeneration OSL of quartz grains provided the accumulated dose. XRD was used to identify mineralogy of several tombs. Based on the estimated luminescence ages a time span from Early and late Bronze ages is obtained, while some possible later activity, due to partial (re)construction or reuse of tombs, was detected.


2019 ◽  
Vol 10 (6/1) ◽  
pp. 78-83
Author(s):  
Sergey V. BASHTANNIK

The aim of this article is a historical and sociological understanding of materials from the era of stone and bronze, accumulated so far as a result of research of the settlement monuments of Gornaya Shoria. The direct subject of paleosociological reconstructions in this work are the migrations of the ancient population. Gornaya Shoria is a historical and cultural region, located in the southern part of the Kuznetsk Basin. In the east and north-east it adjoins the Abakan ridge and the Kuznetsk Alatau, in the south - to the Altai, in the west it is separated from the Salair ridge by the NenyaChumysh ridge. This article is devoted to the cultural and historical interpretation of the archaeological data of the Stone Age and Bronze Age, accumulated to this day as a result of the study of the settlement monuments of the Gornaya Shoria. The first information about the ancient fortifications, mounds and places of worship on the territory of Mountain Shoria was left by military engineers in the 18th century. Archaeological research on the territory of Gornaya Shoria intensified in the late 1970s.The vast majority of monuments of archeology, known in the territory of Gornaya Shoria, have been revealed over the past 30 years. Unfortunately, in the interfluve of the rivers Mrassu and Kondoma, on tributaries of the second and third orders, archaeological reconnaissance has not yet been conducted. Virtually unknown monuments of the early Holocene era (Mesolithic - Neolithic).The study of archaeological monuments of this region was carried out, mainly, on the basis of local museums and they not putting special research aims. Therefore, in this article on the materials of archaeological monuments of the Stone Age and Bronze Age, is considered the interaction of the population of Gornaya Shoria as a historical and cultural region with archaeological cultures of the middle flowing of the river Ob’, the Tom basin, and the Tobol-Irtysh region. Cultural complexes associated with ancient migrations are singled out. Archaeological monuments with pottery of Novokuskovo, Krokhalievo, Mundybash, and comb-pit pottery types are characterized, their relative chronology is suggested. A brief history of archaeological research in Gornaya Shoria is given.


Sign in / Sign up

Export Citation Format

Share Document