scholarly journals Ladoga transgression and landscapes of the Holocene second half in the Southern Ladoga area (according to the study of the archaeological site Podolje-1)

Author(s):  
T. V. Sapelko ◽  
T. M. Gusentsova ◽  
M. A. Kulkova ◽  
A. V. Ludikova ◽  
V. P. Denisenkov ◽  
...  

In Southern Ladoga area, we studied the new archaeological site Podolje 1, located 4 km from Lake Ladoga. Studies included archaeological, lithological, geochemical, pollen, botanical, diatom and radiocarbon analyzes. As a result, new data were obtained that specified the development of the Ladoga transgression in the second half of the Holocene in the Southern Ladoga area. The dependence of the formation of cultural layers on changes in the hydrodynamic conditions of its existence is established. The lower cultural layer was formed before the beginning of the Ladoga transgression. The upper cultural layer was formed after the transgressive stage. At absolute elevations from 10 to 12 m above Sea level in the Southern Ladoga area from 6480 to 4446 cal. BP peatlands were formed. In this case, 64805944 cal. BP there was a period of some humid climate. 45344446 cal. BP, the beginning of the Ladoga transgression is recorded on the territory of the site. The completion of the Ladoga transgression was marked at the beginning of the Subatlantic period.

Author(s):  
В. А. Аверин ◽  
А. Л. Александровский ◽  
Н. О. Викулова ◽  
Р. Н. Курбанов

В статье рассматриваются результаты междисциплинарного исследования малоизвестного в настоящее время археологического памятника Долгое 11. Приводятся детальное литологическое описание разреза, подробные характеристики строения палеопочв, положения четко различимых двух культурных слоев. Археологические материалы из верхнего и нижнего культурных слоев сильно отличаются друг от друга как по сырью, из которого они изготовлены, так и по типологическим и технологическим характеристикам. Абсолютная хронология полученная методом ОСЛ позволила определить возраст нижнего культурного горизонта -около 13,5-14 тыс. л. н. Расселение древних людей в районе стоянки происходило в условиях потепления аллереда, поэтому этот культурный слой коррелируется с палеолитом. Верхний культурный горизонт сформировался уже в голоцене - в эпоху мезолита (около 9 тыс. л. н.), как показало исследование, рельеф стабилизировался в это время из-за повсеместного развития растительности. The article discusses the results of the interdisciplinary study of the presently little-known Dolgoe 11 archaeological site. The materials of the lithological description of the section, detailed characteristics of the structure of paleosols, the positions of clearly distinguished two cultural layers are given. Archaeological materials from the upper and lower cultural layers are very different from each other, both in the raw materials used for their shaping, and in typological and technological characteristics. The absolute chronology from OSL dating allows determine the age of the lower cultural horizon about 13,5-14 thousand years ago. The settlement of humans in the area of the site occurred under the conditions of Allerod warming, therefore, this cultural layer is correlated with Paleolithic. The upper cultural horizon was formed already in the Holocene -in the Mesolithic era (about 9 thousand years ago). during relief stabilisation due to the widespread development of vegetation.


2018 ◽  
Vol 26 (1) ◽  
pp. 7-19
Author(s):  
L. V. Kulakovska ◽  
N. P. Gerassimenko ◽  
V. I. Usik ◽  
O. L. Votiakova

The Ruban’ Paleolithic site was discovered in 2005 by the Transcarpathian Paleolithic expedition of the Archaeological Museum of the IA NASU. The site is located on the territory of the former Zatysnansky chemical plant (Fig. 1b) at a distance of 800 m north of the eastern outskirts of the village of Gorbky, Vynohradiv district, in the Transcarpathian region, in the Ruban’ tract, and about 2 km to the southeast of the Korolevo site. At the time when the site Ruban’ was discovered, the upper part the quarry wall where the site is located, has been ruined by the quarrying that made it impossible to determine a stratigraphic position of the archaeological layer and to establish the age of the culture. In order to solve these problems, 15 geological profiles of the Quaternary deposits have been set along the less disturbed quarry wall in 2016—2017. The stratigraphic subdivision of the sections, according to the Quaternary stratigraphic framework of Ukraine, and their correlation with the profile of the archaeological site have been carried out that enables to determine the geological age of the cultural layer. The geological site Ruban’ is located along the paleoslope and, thus, there are erosional brakes in its sedimentary record. The lowermost stratigrpahical unit is represented by reddish-brown soil of Martonosha unit overlain by gleyed loam of Sula unit and strongly dissected by wedges of the Sula cryogenesis. The other Lower and Middle Pleistocene units have been truncated and now they are represented by pedosediments (with exception of the yellowish-brown soil of Upper Zavadivka unit). Kaydaky unit (the brown forest soil of a warm interglacial climate) is separated from Zavadivka soil by the level of wedges of the Dnieper cryogensis. Pryluky unit is represented by two soils (pl1 and pl3), separated by cryogenic fissures and, in places, by a thin loess layer (pl2). The dark-brown soil pl1 is characterized by both manganese concretions and thick managanese films in its upper part, whereas the brown forest soil pl3 is overlain by a thin layer of dense iron-manganese concretions (pl3c). This layer reflects unstable hydrothermal regime during the transition from the warm interstadial to the cold stadial climate of the Uday time. Uday unit is represented, in places, by a thin loess layer, which is overlain by brown forest soil of Vytachiv unit. The latter is dissected by cryogenic fissures, filled with the non-soil material of Bug unit. The Holocene unit is truncated in many places but the Holocene pedogenic processes (translocation) overprint the underlying units. The stratigraphic correlation of the studied sections with the archaeological site (excavation 1) demonstrates that the archaeological layer is located in the transitional bed of iron-manganese concretions (pl3c). According to the accepted comparison of the Ukrainian stratigraphy with marine isotopic-oxygen scale, the chronostratigraphic position of the archaeological layer corresponds to the transition from the end of the MIS 5 (5a) i. e. 74—64 ka BP. In the industry of Ruban’ site are prevailing the non-Levallois reduction methods of exploataion of Kombewa, centripetal, crossed and sub-crossed cores with a flat working surface. The parrallel reduction system is not typical and random. Blades are practically absent. In the collection of tool-kit dominated side scrapers, among which there is a series of natural backed side scrapers with a thick working edge, created by 2—3 rows of a stepped scaled retouch (Quina retouch type). Such samples can be attributed to a specific type of side scrapers, such as Quina or Semi-Quina (Fig. 7). In general, the main technological and typological features of the Ruban’ site industry are closely related to the cultural layer II of the Korolevo I site. These collections can be attributed to the local variant of the so-called Charantienne Techno-Complex.


Author(s):  
Nikolay Esin ◽  
Nikolay Esin ◽  
Vladimir Ocherednik ◽  
Vladimir Ocherednik

A mathematical model describing the change in the Black Sea level depending on the Aegean Sea level changes is presented in the article. Calculations have shown that the level of the Black Sea has been repeating the course of the Aegean Sea level for the last at least 6,000 years. And the level of the Black Sea above the Aegean Sea level in the tens of centimeters for this period of time.


2011 ◽  
Vol 26 (4) ◽  
pp. 353-361 ◽  
Author(s):  
Ole Bennike ◽  
Bernd Wagner ◽  
Andreas Richter

Geomorphology ◽  
2021 ◽  
pp. 107860
Author(s):  
Bettina S. Bozi ◽  
Beatriz L. Figueiredo ◽  
Erika Rodrigues ◽  
Marcelo C.L. Cohen ◽  
Luiz C.R. Pessenda ◽  
...  

The Holocene ◽  
2021 ◽  
pp. 095968362110482
Author(s):  
Kelvin W Ramsey ◽  
Jaime L. Tomlinson ◽  
C. Robin Mattheus

Radiocarbon dates from 176 sites along the Delmarva Peninsula record the timing of deposition and sea-level rise, and non-marine wetland deposition. The dates provide confirmation of the boundaries of the Holocene subepochs (e.g. “early-middle-late” of Walker et al.) in the mid-Atlantic of eastern North America. These data record initial sea-level rise in the early Holocene, followed by a high rate of rise at the transition to the middle Holocene at 8.2 ka, and a leveling off and decrease in the late-Holocene. The dates, coupled to local and regional climate (pollen) records and fluvial activity, allow regional subdivision of the Holocene into six depositional and climate phases. Phase A (>10 ka) is the end of periglacial activity and transition of cold/cool climate to a warmer early Holocene. Phase B (10.2–8.2 ka) records rise of sea level in the region, a transition to Pinus-dominated forest, and decreased non-marine deposition on the uplands. Phase C (8.2–5.6 ka) shows rapid rates of sea-level rise, expansion of estuaries, and a decrease in non-marine deposition with cool and dry climate. Phase D (5.6–4.2 ka) is a time of high rates of sea-level rise, expanding estuaries, and dry and cool climate; the Atlantic shoreline transgressed rapidly and there was little to no deposition on the uplands. Phase E (4.2–1.1 ka) is a time of lowering sea-level rise rates, Atlantic shorelines nearing their present position, and marine shoal deposition; widespread non-marine deposition resumed with a wetter and warmer climate. Phase F (1.1 ka-present) incorporates the Medieval Climate Anomaly and European settlement on the Delmarva Peninsula. Chronology of depositional phases and coastal changes related to sea-level rise is useful for archeological studies of human occupation in relation to climate change in eastern North America, and provides an important dataset for future regional and global sea-level reconstructions.


The Holocene ◽  
2018 ◽  
Vol 29 (1) ◽  
pp. 26-44 ◽  
Author(s):  
Manel Leira ◽  
Maria C Freitas ◽  
Tania Ferreira ◽  
Anabela Cruces ◽  
Simon Connor ◽  
...  

We examine the Holocene environmental changes in a wet dune slack of the Portuguese coast, Poço do Barbarroxa de Baixo. Lithology, organic matter, biological proxies and high-resolution chronology provide estimations of sediment accumulation rates and changes in environmental conditions in relation to sea-level change and climate variability during the Holocene. Results show that the wet dune slack was formed 7.5 cal. ka BP, contemporaneous with the last stages of the rapid sea-level rise. This depositional environment formed under frequent freshwater flooding and water ponding that allowed the development and post-mortem accumulation of abundant plant remains. The wetland evolved into mostly palustrine conditions over the next 2000 years, until a phase of stabilization in relative sea-level rise, when sedimentation rates slowed down to 0.04 mm yr−1, between 5.3 and 2.5 cal. ka BP. Later, about 0.8 cal. ka BP, high-energy events, likely due to enhanced storminess and more frequent onshore winds, caused the collapse of the foredune above the wetlands’ seaward margin. The delicate balance between hydrology (controlled by sea-level rise and climate change), sediment supply and storminess modulates the habitat’s resilience and ecological stability. This underpins the relevance of integrating past records in coastal wet dune slacks management in a scenario of constant adaptation processes.


2014 ◽  
Vol 86 (2) ◽  
pp. 671-683 ◽  
Author(s):  
JOÃO WAGNER A. CASTRO ◽  
KENITIRO SUGUIO ◽  
JOSÉ C.S. SEOANE ◽  
ALINE M. DA CUNHA ◽  
FABIO F. DIAS

The present paper aims to investigate the relative sea-level and the coastal evolution during the Holocene in the Rio de Janeiro coastline, based on geological and biological indicators. Using topographic survey, excavation and coring, and 14C dating of these coastal deposits and beachrocks outcrops, we have reconstructed a sea-level curve for the Holocene. For the first time on the Brazilian coast it was identified a negative record of relative sea-level during Late Pleistocene and Early Holocene transition. After the transition, a relatively rapid increase of sea-level began. At approximately at 8500 cal yr BP, the sea-level was 0.5 m below the current level, was overtaken for the first time in the Holocene, at approximately 7500 cal yr BP. The maximum level of +2.5 m was reached between 4770 and 4490 cal yr BP. At the point of maximum transgression, the sea-level began a general behavior of lowering until the present. These results confirm other data already obtained elsewhere along the Atlantic coast of South America. The results of this study are consistent with previous researches and they help to refine the Holocene sea-level record along the Brazilian coast.


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