Journal articles: 'Holocene'

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Vázquez, Osvaldo Jiménez, Marjorie M. Condis, and Elvis García Cancio. "Vertebrados post-glaciales en un residuario fósil de Tyto alba scopoli (Aves: Tytonidae) en el occidente de." Revista Mexicana de Mastozoología (Nueva Epoca) 9, no. 1 (January 1, 2005): 85. http://dx.doi.org/10.22201/ie.20074484e.2005.9.1.168.

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Resumen: Se estudió un depósito fosilífero cavernario localizado en el occidente de Cuba y constituido por regurgitaciones de estrígidas. Este depósito fue el resultado de la actividad trófica de la lechuza (Tyto alba), la cual depredó anfibios, reptiles, aves y mamíferos, y fue fechado entre el Holoceno Temprano a Medio (C 14 -7 864 ± 96 años AP). Este estudio mostró una panorámica de la fauna antigua procedente de paisajes terrestres con bosques húmedos en sabanas, con posterioridad a la culminación de la última fase árida del Pleistoceno-Holoceno. Palabras clave: Paleontología; Tafonomía, Tyto alba, Regurgitaciones, Pleistoceno-Holoceno, Cuba. Abstract: A cave fossiliferous deposit formed for barn owl pellets in western part of Cuba are studied. This were results barn owl (Tyto alba) predation on amphibians, reptiles, birds and mammals and are dated in Early-Middle Holocene (C 14 -7 864 ± 96 years BP). These studies show an ancient faunal picture from terrestrial landscapes with moist forest in savannas after last Pleistocene-Holocene arid period. Key words: Paleontology, Tafonomy, Tyto alba, ,Regurgitations, Pleistocene-Holocene.

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Vázquez, Osvaldo Jiménez, Marjorie M. Condis, and Elvis García Cancio. "Vertebrados post-glaciales en un residuario fósil de Tyto alba scopoli (Aves: Tytonidae) en el occidente de." Revista Mexicana de Mastozoología (Nueva Epoca) 9, no. 1 (January 1, 2005): 85. http://dx.doi.org/10.22201/ie.20074484e.2005.9.1.169.

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Resumen: Se estudió un depósito fosilífero cavernario localizado en el occidente de Cuba y constituido por regurgitaciones de estrígidas. Este depósito fue el resultado de la actividad trófica de la lechuza (Tyto alba), la cual depredó anfibios, reptiles, aves y mamíferos, y fue fechado entre el Holoceno Temprano a Medio (C 14 -7 864 ± 96 años AP). Este estudio mostró una panorámica de la fauna antigua procedente de paisajes terrestres con bosques húmedos en sabanas, con posterioridad a la culminación de la última fase árida del Pleistoceno-Holoceno. Palabras clave: Paleontología; Tafonomía, Tyto alba, Regurgitaciones, Pleistoceno-Holoceno, Cuba. Abstract: A cave fossiliferous deposit formed for barn owl pellets in western part of Cuba are studied. This were results barn owl (Tyto alba) predation on amphibians, reptiles, birds and mammals and are dated in Early-Middle Holocene (C 14 -7 864 ± 96 years BP). These studies show an ancient faunal picture from terrestrial landscapes with moist forest in savannas after last Pleistocene-Holocene arid period. Key words: Paleontology, Tafonomy, Tyto alba, ,Regurgitations, Pleistocene-Holocene.

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Santos, Thalison Dos. "CONTEXTO ARQUEOLÓGICO DA TOCA DO PARAGUAIO E AS OCUPAÇÕES DO HOLOCENO ANTIGO NO SUDESTE DO PIAUÍ, BRASIL." CLIO Arqueológica 34, no. 3 (February 1, 2020): 17. http://dx.doi.org/10.20891/clio.v34n3p17-44.

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A Toca do Paraguaio, assim como outros doze sítios do Holoceno antigo, localizados no Parque Nacional Serra da Capivara, no sudeste do Piauí, apresentam conjuntos culturais que atestam uma multiplicidade de comportamentos arcaicos datados entre 12 e 8 mil anos BP. Assim, com o objetivo de identificar similaridades e diferenças nesses comportamentos, bem como promover uma correlação entre os sítios datados desse período, realizou-se um levantamento de dados na bibliografia disponível, na documentação antiga relativa aos sítios e em observações diretas nos conjuntos arqueológicos, o que levou ao estabelecimento de um quadro preliminar cronocultural do Holoceno antigo no sudeste do Piauí.ARCHAEOLOGICAL CONTEXT OF THE PARAGUAYTOUCH AND ANCIENT HOLOCENE OCCUPATIONS IN SOUTHEAST PIAUÍ, BRAZIL ABSTRACTThe Paraguaio rockshelter, as well as a set of twelve other sites dated to the Early Holocene and located in Serra da Capivara National Park in the southeast of Piauí, present cultural assemblages that attest to a multiplicity of archaic behaviors between 12 and 8 Kyr BP. Thus, in order to identify similarities and differences in these behavioral aspects, as well as to promote a correlation between the different sites on the southeastern border of the Parnaíba Basin, a data collection was done in the available bibliography, in the old documentation related to the sites and through direct observations in the archaeological records, which led to the establishment of an Early Holocene chronocultural preliminary framework for the southeast of PiauíKeywords: Early Holocene; Paraguaio rockshelter; Holocene Cultures; Lithic Industry; Rock-art; Funerary behavior

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Gregory, Josh. "Holocene." Colorado Review 45, no. 1 (2018): 150. http://dx.doi.org/10.1353/col.2018.0025.

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Jun, Li, T. H. Jacka, and Vin Morgan. "Crystal-size and microparticle record in the ice core from Dome Summit South, Law Dome, East Antarctica." Annals of Glaciology 27 (1998): 343–48. http://dx.doi.org/10.3189/1998aog27-1-343-348.

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An investigation of crystal-size and microparticle variations has been carried out for the 1196 m ice core retrieved from Dome Summit South (DSS) near the summit of Law Dome, East Antarctica. Results show that for ice deposited during the Holocenr (depth <1103 m), microparticle concentrations are low. Variations of crystal size with in the Holocenc ice are due to growth with time at a temperature-dependent rate, and recrystallisation as a consequence of the ice flow. in the DSS ice core the highest microparticle concentration occurs close to the depth (1133 M) at which oxygen isotope ratios exhibit the greatest negative values, i.e. the Last Glaciol Maximum (LGM). Also at this depth, crystal size reduces sharply from a general crystal growth trend above to near minimum core values below. For ice originating during the LGM, the concentration of particles is an order of magnitude greater than the mean Holocene concentration. Laboratory annealing tests at -1 °C confirm the retarded crystal growth in the high-microparlicle-concent ration ice.

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Pottage, Alain. "Holocene jurisprudence." Journal of Human Rights and the Environment 10, no. 2 (September 2019): 153–75. http://dx.doi.org/10.4337/jhre.2019.02.01.

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We are now accustomed to thinking of the Holocene as an epoch that we have left behind. But from what perspective do we close the Holocene and begin describing the Anthropocene? Academic disciplines have their own geology: epistemic or medial strata, sediments or condensations, which condition the apprehension and communication of fresh insight. The phrase ‘Holocene jurisprudence’ draws attention to a particular epistemic sediment: the figure of appropriation or ‘taking’, which is reactivated in many critical commentaries on the Anthropocene. And if, speaking figuratively, one were to identify an index fossil that compellingly expresses the epistemic traditions and potentialities that are sedimented into the Euro-American figure of appropriation, then Carl Schmitt's Nomos of the Earth would be a good candidate.

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Bradshaw, R. H. W., and N. Roberts. "The Holocene." Journal of Ecology 78, no. 2 (June 1990): 552. http://dx.doi.org/10.2307/2261135.

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Grayson, D. K. "Holocene underkill." Proceedings of the National Academy of Sciences 105, no. 11 (March 11, 2008): 4077–78. http://dx.doi.org/10.1073/pnas.0801272105.

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Langdon, Peter. "Holocene book review: The Holocene: An Environmental History." Holocene 24, no. 10 (September 11, 2014): 1406. http://dx.doi.org/10.1177/0959683614545030.

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Yang, Xunlin, Hong Yang, Baoyan Wang, Li-Jung Huang, Chuan-Chou Shen, R. Lawrence Edwards, and Hai Cheng. "Early-Holocene monsoon instability and climatic optimum recorded by Chinese stalagmites." Holocene 29, no. 6 (February 28, 2019): 1059–67. http://dx.doi.org/10.1177/0959683619831433.

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The timing and duration of the Holocene East Asian summer monsoon (EASM) maximum and the interpretation of Chinese stalagmite δ18O records have long been disputed. Notably, interpretations of Holocene EASM variations are frequently based on a single record or study area and are often contradictory. In this study, we conducted stable isotope analyses of four Holocene stalagmites from Chongqing, southwest China. The results reveal differences in the timing of the Holocene EASM maximum and to try to resolve the inconsistency we analyzed and statistically integrated a total of 16 Holocene stalagmite records from 14 caves in the EASM region. The resulting synthesized Holocene stalagmite δ18O (δ18Osyn) record is in agreement with other EASM records and confirms that stalagmite δ18O records are a valid indicator of EASM intensity, rather of local precipitation amount. The δ18Osyn record shows that the EASM intensified rapidly from the onset of the early Holocene; notably, however, there were distinct EASM oscillations in the early Holocene, consisting of three abrupt millennial-scale events. This indicates that, contrary to several previous interpretations, the early Holocene EASM was unstable. Subsequently, during 8–6 kyr BP, the EASM was relatively stable and strong, with the strongest monsoon occurring during 8–7 kyr BP. This evidence of a stable and strong mid-Holocene EASM in eastern China is in accord with the classical view of a mid-Holocene Optimum in China.

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Hockett, Bryan. "Middle and Late Holocene Hunting in the Great Basin: A Critical Review of the Debate and Future Prospects." American Antiquity 70, no. 4 (October 2005): 713–31. http://dx.doi.org/10.2307/40035871.

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Recent papers published in American Antiquity and elsewhere have debated whether there were more artiodactyls available to human foragers during the relatively cool and moist Late Holocene compared to the relatively warm and dry Middle Holocene in the Great Basin. If so, how did human foragers respond to changes in artiodactyl abundance, and what explanations may be offered to account for any changes in human behavior across the Middle Holocene-Late Holocene boundary? A critical examination of the data used in this debate does not support the interpretation that human foragers across the Great Basin intensified artiodactyl hunting during the Late Holocene relative to Middle Holocene levels. Depending on location and setting, individual sites occupied during the Middle Holocene may show decidedly more intensive artiodactyl hunting at this time. At other sites, artiodactyl hunting remained consistent throughout the Middle and Late Holocene, while small game hunting and gathering significantly varied. New data presented below suggest that a change from encounter or ambush hunting involving small family groups to the communal hunting of pronghorn by larger numbers of people occurred near the Middle Holocene-Late Holocene boundary. I suggest that changes in social organization and technology also occurred at this time.

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Silvestre, Carolina Pereira, André Luiz Carvalho da Silva, Maria Augusta Martins da Silva, and Amilsom Rangel Rodrigues. "INVESTIGATION OF THE INTERNAL STRUCTURE AND EVOLUTION OF THE HOLOCENE BARRIER OF MARICÁ (RIO DE JANEIRO, BRAZIL)." Revista Brasileira de Geofísica 33, no. 3 (July 22, 2015): 461. http://dx.doi.org/10.22564/rbgf.v33i3.948.

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ABSTRACT. The objective of this study is the identification of the internal structure of the Holocene barrier of the Maricá coastal plain (Rio de Janeiro, Brazil) for the understanding of the evolution of this coast. The regional geomorphology is characterized by the large Maricá lagoon and by two sandy barriers which confines a series of small near-dry lagoons. Geophysical data obtained from ground-penetrating radar (GPR) images, with 400 and 200 MHz shielded antennae and borehole samples, both reaching down to about 10 meters in depth, provided information about the sedimentary architecture and geological and oceanographical processes responsible for the evolution of this area in the Holocene. The results show that the barrier internal structure is formed by a set of strata presenting different geometries, dip directions and organization, relative to the following depositional environments: dunes, washover fans, beach and tidal channels. It was possible to determine the importance of the sea level changes, longshore currents and overwash processes for the barrier development. Strong reflectors representing eolian strata dipping towards the continent point out to a phase of barrier retrogradation; afterwards, a succession of very well preserved beach paleoscarps, located south of the previous barrier, shows a phase of barrier progradation. Such evidences indicate that the barrier evolved according to the Holocene sea level fluctuations recognized for the Brazilian coast.Keywords: ground-penetrating radar, barrier-lagoon system, Holocene, Maricá coast. RESUMO. O presente estudo objetivou identificar a estrutura interna da barreira holocênica buscando compreender a evolução da planície costeira de Maricá (Rio de Janeiro). A geomorfologia regional é caracterizada pela Lagoa de Maricá e duas barreiras arenosas, separadas por pequenas lagunas colmatadas. Dados geofísicos obtidos com um georadar, com antenas de 400 e 200 MHz, e amostras de sondagem geológica, ambos até a profundidade média de 10 metros, forneceram informações sobre a arquitetura sedimentar e os processos geológicos e oceanográficos responsáveis pela evolução desta área no Holoceno. Os resultados mostram que a estrutura interna da barreira é formada por um conjunto de estratos de diferentes geometrias, direções de mergulho e modos de organização relacionados aos seguintes ambientes deposicionais: dunas, leques de arrombamento, praias e canais de maré. Essas características permitiram o entendimento da dinâmica costeira responsável pelo desenvolvimento da barreira, com destaque para as variações do nível do mar, correntes de deriva litorânea e mecanismos de sobrelavagem. Refletores marcantes representando estratos eólicos inclinados para o continente indicam uma fase de retrogradação da barreira; a esse episódio se seguiu um período marcado por sucessivas paleoescarpas de tempestade, localizadas mais ao sul, indicando uma fase de progradação. Essas evidências mostram que a barreira evoluiu de acordo com as fases de transgressão e regressão marinha do Holoceno reconhecidas para o litoral brasileiro.Palavras-chave: georadar, sistema barreira-laguna, Holoceno, litoral de Maricá.

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Xu, Gang, Jian Liu, Marcello Gugliotta, Yoshiki Saito, Lilei Chen, Xin Zhang, and Gang Hu. "Link between East Asian summer monsoon and sedimentation in river-mouth sandbars since the early Holocene preserved in the Yangtze River subaqueous delta front." Quaternary Research 95 (March 2, 2020): 84–96. http://dx.doi.org/10.1017/qua.2020.1.

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AbstractThis paper presents geochemical and grain-size records since the early Holocene in core ECS0702 with a fine chronology frame obtained from the Yangtze River subaqueous delta front. Since ~9500 cal yr BP, the proxy records of chemical weathering from the Yangtze River basin generally exhibit a Holocene optimum in the early Holocene, a weak East Asian summer monsoon (EASM) period during the middle Holocene, and a relatively strong EASM period in the late Holocene. The ~8.2 and ~4.4 cal ka BP cooling events are recorded in core ECS0702. The flooding events reconstructed by the grain-size parameters since the early Holocene suggest that the floods mainly occurred during strong EASM periods and the Yangtze River mouth sandbar caused by the floods mainly formed in the early and late Holocene. The Yangtze River-mouth sandbars since the early Holocene shifted from north to south, affected by tidal currents and the Coriolis force, and more importantly, controlled by the EASM. Our results are of great significance for enriching both the record of Holocene climate change in the Yangtze River basin and knowledge about the formation and evolution progress of the deltas located in monsoon regions.

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Owen, Geraint. "Holocene book reviews : Geology of Holocene barrier island systems." Holocene 5, no. 2 (June 1995): 253–54. http://dx.doi.org/10.1177/095968369500500217.

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Macfarlane, P. Allen, Jordan F. Clark, M. Lee Davisson, G. Bryant Hudson, and Donald O. Whittemore. "Late-Quaternary Recharge Determined from Chloride in Shallow Groundwater in the Central Great Plains." Quaternary Research 53, no. 2 (March 2000): 167–74. http://dx.doi.org/10.1006/qres.1999.2113.

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AbstractAn extensive suite of isotopic and geochemical tracers in groundwater has been used to provide hydrologic assessments of the hierarchy of flow systems in aquifers underlying the central Great Plains (southeastern Colorado and western Kansas) of the United States and to determine the late Pleistocene and Holocene paleotemperature and paleorecharge record. Hydrogeologic and geochemical tracer data permit classification of the samples into late Holocene, late Pleistocene–early Holocene, and much older Pleistocene groups. Paleorecharge rates calculated from the Cl concentration in the samples show that recharge rates were at least twice the late Holocene rate during late Pleistocene–early Holocene time, which is consistent with their relative depletion in 16O and D. Noble gas (Ne, Ar, Kr, Xe) temperature calculations confirm that these older samples represent a recharge environment approximately 5°C cooler than late Holocene values. These results are consistent with the global climate models that show a trend toward a warmer, more arid climate during the Holocene.

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Palmer, Hannah M., Veronica Padilla Vriesman, Caitlin M. Livsey, Carina R. Fish, and Tessa M. Hill. "Holocene climate and oceanography of the coastal Western United States and California Current System." Climate of the Past 19, no. 1 (January 24, 2023): 199–232. http://dx.doi.org/10.5194/cp-19-199-2023.

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Abstract. Examination of climatic and oceanographic changes through the Holocene (11.75 ka–present) allows for an improved understanding and contextualization of modern climate change. Climate records of the Holocene can be utilized as a “baseline” from which to compare modern climate and can also provide insights into how environments experience and recover from change. However, individual studies on Holocene climate in the literature tend to focus on a distinct geographic location, a specific proxy record, or a certain aspect of climate (e.g., upwelling or precipitation), resulting in localized, record-specific trends rather than a comprehensive view of climate variability through the Holocene. Here we synthesize the major oceanographic and terrestrial changes that have occurred in the Western United States (bounded by 30 to 52∘ N and 115 to 130∘ W) through the most recent 11.75 kyr and explore the impacts of these changes on marine and terrestrial ecosystems. We present a novel spatiotemporal analysis of Holocene marine and terrestrial temperature, hydroclimate, and fire activity across the Early, Middle, and Late Holocene using a coded analysis of over 40 published studies. Following coded analysis of temperature, hydroclimate, and fire activity in the paper, we include a broader literature review of environmental change through the Holocene, including an examination of the impacts of multi-millennial climate trends on ecological communities. We find that the Early Holocene is characterized by warming relative to pre-Holocene conditions, including warm sea surface conditions, a warm and dry Pacific Northwest, a warm and wet Southwest, and overall spatial and temporal stability. In the Middle Holocene, these patterns reverse; this interval is characterized by cool sea surface temperatures, a cool and wet Pacific Northwest and warm and dry Southwest. The Late Holocene is the most variable interval, both spatially and temporally, and a novel spatial trend appears in terrestrial climate with warmer coastal areas and cooler inland areas. Human communities interacted with the environment throughout the entire Holocene, as evidenced in archeological and paleoenvironmental records, yet the recent Era of Colonization (1850–present) represents an unprecedented environmental interval in many records. Broadly, our analysis shows linkages between terrestrial and oceanographic conditions, distinct environmental phases through time, and emphasizes the importance of local factors in controlling climate through the dynamic Holocene.

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Ц.Оюунчимэг and Ж.Батсүх. "Монгол орны голоцены үеийн байгаль орчны өөрчлөлт, хурдас хуримтлалын онцлог." Геологийн асуудлууд 15 (February 23, 2023): 72–78. http://dx.doi.org/10.22353/.v15i01.2275.

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The investigations presented in this paper focus on the reconstruction of Holocene environmental change in Mongolia based on published paleoclimate records, including lake sediments, lake levels, pollen records and eolian sediment records. These data indicate that the early Holocene of Mongolia is characterized by increasing temperature and humidity. The mid Holocene is characterized by enhanced aridity, and during late Holocene humidity increased, evaporation decreased.

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Kirkham, Anthony. "Shoreline Evolution, Aeolian Deflation and Anhydrite Distribution of the Holocene, Abu Dhabi." GeoArabia 2, no. 4 (October 1, 1997): 403–16. http://dx.doi.org/10.2113/geoarabia0204403.

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ABSTRACT Easier access to most parts of the Abu Dhabi coastline, combined with satellite imagery, has enabled a more detailed examination of the Holocene strata than was possible twenty or thirty years ago. Whilst the basic principles of coastal progradations documented in those early days are still valid, they portrayed an oversimplified picture of the Holocene coastal geomorphology and sabkha sedimentology. New data re-emphasises the importance of antecedant topography in imposing depositional complexity on the Holocene System. Former Holocene shorelines can now be mapped with greater clarity and reveal its highly embayed nature. The Holocene transgressive limits are locally redefined. Some palaeo-highs, that formed earlier Holocene peninsulas, have been completely removed by deflation. Two phases of sabkha anhydrite are recognised and their distributions are largely predictable by remote sensing.

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Andersson, C., F. S. R. Pausata, E. Jansen, B. Risebrobakken, and R. J. Telford. "Holocene trends in the foraminifer record from the Norwegian Sea and the North Atlantic Ocean." Climate of the Past 6, no. 2 (March 30, 2010): 179–93. http://dx.doi.org/10.5194/cp-6-179-2010.

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Abstract. The early to mid-Holocene thermal optimum is a well-known feature in a wide variety of paleoclimate archives from the Northern Hemisphere. Reconstructed summer temperature anomalies from across northern Europe show a clear maximum around 6000 years before present (6 ka). For the marine realm, Holocene trends in sea-surface temperature reconstructions for the North Atlantic and Norwegian Sea do not exhibit a consistent pattern of early to mid-Holocene warmth. Sea-surface temperature records based on alkenones and diatoms generally show the existence of a warm early to mid-Holocene optimum. In contrast, several foraminifer and radiolarian based temperature records from the North Atlantic and Norwegian Sea show a cool mid-Holocene anomaly and a trend towards warmer temperatures in the late Holocene. In this paper, we revisit the foraminifer record from the Vøring Plateau in the Norwegian Sea. We also compare this record with published foraminifer based temperature reconstructions from the North Atlantic and with modelled (CCSM3) upper ocean temperatures. Model results indicate that while the seasonal summer warming of the sea-surface was stronger during the mid-Holocene, sub-surface depths experienced a cooling. This hydrographic setting can explain the discrepancies between the Holocene trends exhibited by phytoplankton and zooplankton based temperature proxy records.

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Andersson, C., F. S. R. Pausata, E. Jansen, B. Risebrobakken, and R. J. Telford. "Holocene trends in the foraminifer record from the Norwegian Sea and the North Atlantic Ocean." Climate of the Past Discussions 5, no. 4 (July 30, 2009): 2081–113. http://dx.doi.org/10.5194/cpd-5-2081-2009.

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Abstract. The early to mid-Holocene thermal optimum is a well-known feature in a wide variety of paleoclimate archives from the Northern Hemisphere. Reconstructed summer temperature anomalies from across northern Europe show a clear maximum around 6 ka. For the marine realm, Holocene trends in sea-surface temperature reconstructions for the North Atlantic and Norwegian Sea do not exhibit a consistent pattern of early to mid-Holocene warmth. Sea-surface temperature records based on alkenones and diatoms generally show the existence of a warm early to mid-Holocene optimum. In contrast, several foraminifer and radiolarian based temperature records from the North Atlantic and Norwegian Sea show a cool mid-Holocene anomaly and a trend towards warmer temperatures in the late Holocene. In this paper, we revisit the foraminifer record from the Vøring Plateau in the Norwegian Sea. We also compare this record with published foraminifer based temperature reconstructions from the North Atlantic and with modelled (CCSM3) upper ocean temperatures. Model results indicate that while the seasonal summer warming of the sea-surface was stronger during the mid-Holocene, sub-surface depths experienced a cooling. This hydrographic setting can explain the discrepancies between the Holocene trends exhibited by phytoplankton and zooplankton based temperature proxy records.

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Wolfe, Stephen A., Jeff Ollerhead, David J. Huntley, and Olav B. Lian. "Holocene dune activity and environmental change in the prairie parki and and boreal forest, central Saskatchewan, Canada." Holocene 16, no. 1 (January 2006): 17–29. http://dx.doi.org/10.1191/0959683606hl903rp.

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Past aeolian activity was reconstructed at four dunefields in the prairie parkland and boreal forest of central Saskatchewan to elucidate landscape response to environmental change. Optical ages from stabilized dunes in the boreal transition ecoregion indicate two episodes of activity. The first, at about 11 ka, corresponds to a period of early-Holocene parkland and grassland cover following deglaciation and drainage after about 13.0 ka, and brief establishment of boreal forest. The second, between about 7.5 and 5 ka, corresponds to a period of mid-Holocene parkland-grassland cover. Optical ages from dunefields in the prairie parkland primarily record mid-Holocene activity, between about 7.5 and 4.7 ka, corresponding to a period of grassland cover, with some reworking continuing into the late Holocene. Although this area was deglaciated by about 13.5 ka, there is no evidence of early-Holocene dune activity, suggesting that mid-Holocene activity may have reworked earlier deposits here. Consequently, much of the morphology and stratigraphy observed in these dunefields are associated with mid-Holocene activity, likely associated with increased aridity and reduced vegetation cover at that time. This study provides the most northerly evidence of mid-Holocene dune reactivation on the Great Plains, lending support to the assertion that aeolian activity was widespread at that time.

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Long, Hao, ZhongPing Lai, NaiAng Wang, and Yu Li. "Holocene climate variations from Zhuyeze terminal lake records in East Asian monsoon margin in arid northern China." Quaternary Research 74, no. 1 (July 2010): 46–56. http://dx.doi.org/10.1016/j.yqres.2010.03.009.

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AbstractZhuyeze palaeolake is a terminal lake situated in the arid northern China in the East Asian monsoon margin. In order to examine the Holocene palaeoclimatic change in the East Asian monsoon margin, Qingtu Lake section (QTL) from Zhuyeze palaeolake is sampled in high resolution. Palaeoclimatic proxies such as grain size, carbonate, TOC, C/N and δ13C of organic matter, were analyzed; eleven 14C samples and six optically stimulated luminescence (OSL) samples were dated to provide chronological control. We also investigated the geomorphic features of lake shorelines in this area. The results show that the climate was warm and dry in early-Holocene (9.5–7.0 cal ka BP), cool and humid in mid-Holocene (7.0–4.8 cal ka BP), and increasingly drier in late-Holocene (since 4.8 cal ka BP). Comparisons of our records with other records in adjacent areas, as well as with the records in the Asian monsoon areas, suggested that changes in effective moisture was synchronous in East Asian monsoon marginal zone (i.e. the pattern of dry early-Holocene, humid mid-Holocene, and aridity-increasing late-Holocene), and that the moisture optimum during the Holocene was out-of-phase between Asian monsoon margin and Asian monsoonal dominated region, possibly due to the high temperature at that time.

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Herzschuh, Ulrike, Thomas Böhmer, Manuel Chevalier, Raphaël Hébert, Anne Dallmeyer, Chenzhi Li, Xianyong Cao, et al. "Regional pollen-based Holocene temperature and precipitation patterns depart from the Northern Hemisphere mean trends." Climate of the Past 19, no. 7 (July 25, 2023): 1481–506. http://dx.doi.org/10.5194/cp-19-1481-2023.

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Abstract. A mismatch between model- and proxy-based Holocene climate change, known as the “Holocene conundrum”, may partially originate from the poor spatial coverage of climate reconstructions in, for example, Asia, limiting the number of grid cells for model–data comparisons. Here we investigate hemispheric, latitudinal, and regional mean time series and time-slice anomaly maps of pollen-based reconstructions of mean annual temperature, mean July temperature, and annual precipitation from 1908 records in the Northern Hemisphere extratropics. Temperature trends show strong latitudinal patterns and differ between (sub-)continents. While the circum-Atlantic regions in Europe and eastern North America show a pronounced Middle Holocene temperature maximum, western North America shows only weak changes, and Asia mostly shows a continuous Holocene temperature increase. Likewise, precipitation trends show certain regional peculiarities such as the pronounced Middle Holocene precipitation maximum between 40 and 50∘ N in Asia and Holocene increasing trends in Europe and western North America, which can all be linked with Holocene changes in the regional circulation pattern responding to temperature change. Given a background of strong regional heterogeneity, we conclude that the calculation of global or hemispheric means, which initiated the Holocene conundrum debate, should focus more on understanding the spatiotemporal patterns and their regional drivers.

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Martinez-Macchiavello, J. C., A. Tatur, S. Servant-Vildary, and R. Del Valle. "Holocene environmental change in a marine-estuarine-lacustrine sediment sequence, King George Island, South Shetland Islands." Antarctic Science 8, no. 4 (December 1996): 313–22. http://dx.doi.org/10.1017/s095410209600048x.

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Sedimentological features and cluster analysis of diatom assemblages were used to investigate a local Holocene prograding sequence of marine-estuarine-lacustrine sediments. It consists of upward finning and thinning sediment cycles formed at the mouth of a meltwater stream during regional isostatic uplift, which followed early Holocene deglaciation and marine inundation events. The sequence begins in the lower Holocene sublittoral sand (marine diatoms and abundant molluscs) overlying, with a transgressive base, the deltic (?) clastic sediment marking probably one of the pre-Holocene interglacial periods (index diatom Actinocyclus ingens suggests an age >0.62 Ma). The lower Holocene marine sand was truncated by middle Holocene gravity flows, bearing volcanic ash. They were deposited in a high energy estuarine environment (brackish diatoms). The beach subsequently formed separated the estuary from the sea and changed it into a freshwater lake. Accumulation of moss and gyttja, containing a freshwater diatom assemblage, marks the final late Holocene stage of this coastal sedimentary sequence, which can be considered as typical for deglaciation periods in the maritime Antarctic.

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López, Gabriel E. J., and Juan Pablo Orsi. "El sitio Abrigo Pozo Cavado, Puna de Salta. Nuevo aporte arqueológico y cronológico para el estudio de procesos de cambio hacia finales del Holoceno medio (ca. 5600-4600 años AP) / THE ABRIGO POZO CAVADO SITE, PUNA OF SALTA. NEW ARCHAEOLOGICAL ..." Revista del Museo de Antropología 10, no. 1 (June 30, 2017): 43. http://dx.doi.org/10.31048/1852.4826.v10.n1.12735.

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Este trabajo analiza y discute nueva información arqueológica y cronológica del sitio Abrigo Pozo Cavado correspondiente a finales del Holoceno medio (ca. 5600-4600 años AP). Este sitio se ubica en el Salar de Pocitos, Puna de Salta, a una altura de 3700 msnm. El registro arqueofaunístico indica una predominancia absoluta de los Camelidae pero con variabilidad osteométrica relacionada con la presencia de distintas especies de esta familia. El material lítico registra distintas morfologías de puntas de proyectil y materias primas, entre ellas, obsidianas alóctonas. Por último, se destaca la presencia de cuentas de valva.Palabras clave: Holoceno medio; procesos de cambio; Puna de Salta.AbstractThis paper analyzes and discusses new archaeological and chronological data at the end of the Middle Holocene (ca. 5600-4600 years BP) from the Abrigo Pozo Cavado site. This site is located in the Salar de Pocitos, Puna of Salta, at an altitude of 3700 masl. The archaeofaunal record presents an absolute predominance of Camelidae, yet variability in osteometric data indicates different species of this family. The lithic material has diverse morphologies of projectile points and raw materials, including allochthonous obsidian. Finally, the presence of shell beads is also reported.Keywords: Middle Holocene; processes of change; Puna of Salta.

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26

Hiemstra, John F. "Holocene book review." Holocene 32, no. 6 (February 7, 2022): 609. http://dx.doi.org/10.1177/09596836221077317.

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Certini, Giacomo, and Riccardo Scalenghe. "Holocene as Anthropocene." Science 349, no. 6245 (July 17, 2015): 246. http://dx.doi.org/10.1126/science.349.6245.246a.

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Widmann, Martin. "Delayed Holocene warming." Nature Geoscience 2, no. 6 (June 2009): 380–81. http://dx.doi.org/10.1038/ngeo536.

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Santana, Carlos. "Holocene book review." Holocene 29, no. 9 (September 2019): 1512–13. http://dx.doi.org/10.1177/0959683619846760.

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Benn, Doug. "Holocene book reviews." Holocene 4, no. 2 (June 1994): 219. http://dx.doi.org/10.1177/095968369400400212.

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Solomina, Olga N., Raymond S. Bradley, Dominic A. Hodgson, Susan Ivy-Ochs, Vincent Jomelli, Andrew N. Mackintosh, Atle Nesje, et al. "Holocene glacier fluctuations." Quaternary Science Reviews 111 (March 2015): 9–34. http://dx.doi.org/10.1016/j.quascirev.2014.11.018.

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Mayewski, Paul A., Eelco E. Rohling, J. Curt Stager, Wibjörn Karlén, Kirk A. Maasch, L. David Meeker, Eric A. Meyerson, et al. "Holocene climate variability." Quaternary Research 62, no. 3 (November 2004): 243–55. http://dx.doi.org/10.1016/j.yqres.2004.07.001.

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Although the dramatic climate disruptions of the last glacial period have received considerable attention, relatively little has been directed toward climate variability in the Holocene (11,500 cal yr B.P. to the present). Examination of ?50 globally distributed paleoclimate records reveals as many as six periods of significant rapid climate change during the time periods 9000"8000, 6000"5000, 4200"3800, 3500"2500, 1200"1000, and 600"150 cal yr B.P. Most of the climate change events in these globally distributed records are characterized by polar cooling, tropical aridity, and major atmospheric circulation changes, although in the most recent interval (600"150 cal yr B.P.), polar cooling was accompanied by increased moisture in some parts of the tropics. Several intervals coincide with major disruptions of civilization, illustrating the human significance of Holocene climate variability.

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Thompson, R., and G. M. Turner. "Icelandic Holocene palaeolimnomagnetism." Physics of the Earth and Planetary Interiors 38, no. 4 (May 1985): 250–61. http://dx.doi.org/10.1016/0031-9201(85)90072-x.

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Certini, G., and R. Scalenghe. "Holocene as Anthropocene." Science 349, no. 6245 (July 16, 2015): 246. http://dx.doi.org/10.1126/science.349.6245.246-a.

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Long, Austin, Andrei Sher, and Sergey Vartanyan. "Holocene mammoth dates." Nature 369, no. 6479 (June 1994): 364. http://dx.doi.org/10.1038/369364a0.

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Osborn, Gerald, and P. Thompson Davis. "Holocene Glacier Fluctuations." Episodes 10, no. 1 (March 1, 1987): 26–28. http://dx.doi.org/10.18814/epiiugs/1987/v10i1/011.

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Morrow, W. "Holocene coccidioidomycosis: Valley Fever in early Holocene bison (Bison antiquus)." Mycologia 98, no. 5 (September 1, 2006): 669–77. http://dx.doi.org/10.3852/mycologia.98.5.669.

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Berrisford, Mark S. "Holocene Book Reviews : Solifluction and climatic variation in the Holocene." Holocene 5, no. 4 (December 1995): 499–500. http://dx.doi.org/10.1177/095968369500500416.

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Morrow, Willard. "Holocene coccidioidomycosis: Valley Fever in early Holocene bison (Bison antiquus)." Mycologia 98, no. 5 (September 2006): 669–77. http://dx.doi.org/10.1080/15572536.2006.11832638.

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Krull, Evelyn S., Clifford H. Thompson, and Jan O. Skjemstad. "Chemistry, radiocarbon ages, and development of a subtropical acid peat in Queensland, Australia." Soil Research 42, no. 4 (2004): 411. http://dx.doi.org/10.1071/sr03144.

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A subtropical peat, developed on a costal plain in southern Queensland, has been studied with respect to its morphology, radiocarbon (14C) age, total organic carbon (C) content, stable C isotopic (δ13C) values, and spectroscopic characteristics (13C-NMR and FTIR). The combination of techniques allowed for an interpretation of changes in peat development over time, an assessment of paleoclimatic changes that apparently occurred during peat growth, and a comparison with perched lake sediments on Fraser Island.Geochemical data from the peat showed a relative increase in abundance of aromatic C (which may include charcoal) from the Pleistocene to the early Holocene and much decreased abundances of aromatic C thereafter. This trend may be due to changes in fire frequency from the Pleistocene–early Holocene (high fire frequency) to the early and middle Holocene (relatively low fire frequency). This interpretation is consistent with other published data from this area, showing increased aridity, increased fire frequency and dominance of sclerophyll forest during the late Pleistocene–early Holocene.Another significant geochemical change in the acid peat occurred within the middle to late Holocene. This period is characterised by highly 13C-depleted organic matter and a comparably high alkyl C (lipid) content. These data are interpreted as indicating wetter and year-round waterlogged conditions, possibly associated with poor drainage during the Holocene sea level maximum c. 5500–3000 years BP. By comparison, abundance of alkyl C decreased and δ13C values increased in the latest Holocene. The geochemical data from the acid peat point to the occurrence of a dry phase during the late Pleistocene to early Holocene and a wet phase in the middle to late Holocene, followed by another dry phase. These data correspond well with published data of 2 phases of dune formation (dry periods) in the early to middle Holocene and in the latest Holocene for North Queensland.

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Jones, Andrew G., Shaun A. Marcott, Andrew L. Gorin, Tori M. Kennedy, Jeremy D. Shakun, Brent M. Goehring, Brian Menounos, Douglas H. Clark, Matias Romero, and Marc W. Caffee. "Four North American glaciers advanced past their modern positions thousands of years apart in the Holocene." Cryosphere 17, no. 12 (December 21, 2023): 5459–75. http://dx.doi.org/10.5194/tc-17-5459-2023.

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Abstract. There is unambiguous evidence that glaciers have retreated from their 19th century positions, but it is less clear how far glaciers have retreated relative to their long-term Holocene fluctuations. Glaciers in western North America are thought to have advanced from minimum positions in the Early Holocene to maximum positions in the Late Holocene. We assess when four North American glaciers, located between 38–60∘ N, were larger or smaller than their modern (2018–2020 CE) positions during the Holocene. We measured 26 paired cosmogenic in situ 14C and 10Be concentrations in recently exposed proglacial bedrock and applied a Monte Carlo forward model to reconstruct plausible bedrock exposure–burial histories. We find that these glaciers advanced past their modern positions thousands of years apart in the Holocene: a glacier in the Juneau Icefield (BC, Canada) at ∼2 ka, Kokanee Glacier (BC, Canada) at ∼6 ka, and Mammoth Glacier (WY, USA) at ∼1 ka; the fourth glacier, Conness Glacier (CA, USA), was likely larger than its modern position for the duration of the Holocene until present. The disparate Holocene exposure–burial histories are at odds with expectations of similar glacier histories given the presumed shared climate forcings of decreasing Northern Hemisphere summer insolation through the Holocene followed by global greenhouse gas forcing in the industrial era. We hypothesize that the range in histories is the result of unequal amounts of modern retreat relative to each glacier's Holocene maximum position, rather than asynchronous Holocene advance histories. We explore the influence of glacier hypsometry and response time on glacier retreat in the industrial era as a potential cause of the non-uniform burial durations. We also report mean abrasion rates at three of the four glaciers: Juneau Icefield Glacier (0.3±0.3 mm yr−1), Kokanee Glacier (0.04±0.03 mm yr−1), and Mammoth Glacier (0.2±0.2 mm yr−1).

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Neme, Gustavo, Marcelo Zárate, María de la Paz Pompei, Fernando Franchetti, Adolfo Gil, Miguel Giardina, Viviana P. Seitz, M. Laura Salgán, Cinthia Abbona, and Fernando Fernández. "Population Dynamics and Human Strategies in Northwestern Patagonia." Documenta Praehistorica 48 (September 10, 2021): 2–21. http://dx.doi.org/10.4312/dp.48.15.

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In this paper we evaluate the role of human strategies in the Andean Piedmont from northern Patagonia across the Holocene. Specifically, we present the analysis of the Early Holocene-Late Holocene archaeological record of Salamanca cave (Mendoza-Argentina). We identified technological changes that occurred during the Late Holocene and the implications of a human occupation hiatus in the Middle Holocene. We follow a multiproxy approach by the analysis of radiocarbon dates, archaeofaunal remains, ceramic, lithics and XRF obsidian sourcing. We also discuss a detailed stratigraphic sequence by geomorphological descriptions, the construction of a radiocarbon sequence model and summed probability distributions, compared with other archaeological sites in the region. We conclude that after the Middle Holocene archaeological hiatus, human populations grew while guanaco populations dropped. The imbalance between demography and resources boosted the incorporation of new technologies such as ceramics and the bow and arrow, allowing people to exploit lower-ranked resources.

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Prado, L. F., I. Wainer, C. M. Chiessi, M. P. Ledru, and B. Turcq. "A mid-Holocene climate reconstruction for eastern South America." Climate of the Past 9, no. 5 (September 9, 2013): 2117–33. http://dx.doi.org/10.5194/cp-9-2117-2013.

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Abstract. The mid-Holocene (6000 calibrated years before present) is a key period in palaeoclimatology because incoming summer insolation was lower than during the late Holocene in the Southern Hemisphere, whereas the opposite happened in the Northern Hemisphere. However, the effects of the decreased austral summer insolation over South American climate have been poorly discussed by palaeodata syntheses. In addition, only a few of the regional studies have characterised the mid-Holocene climate in South America through a multiproxy approach. Here, we present a multiproxy compilation of mid-Holocene palaeoclimate data for eastern South America. We compiled 120 palaeoclimatological datasets, which were published in 84 different papers. The palaeodata analysed here suggest a water deficit scenario in the majority of eastern South America during the mid-Holocene if compared to the late Holocene, with the exception of northeastern Brazil. Low mid-Holocene austral summer insolation caused a reduced land–sea temperature contrast and hence a weakened South American monsoon system circulation. This scenario is represented by a decrease in precipitation over the South Atlantic Convergence Zone area, saltier conditions along the South American continental margin, and lower lake levels.

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Li, Xiumei, Mingda Wang, Yuzhi Zhang, Li Lei, and Juzhi Hou. "Holocene climatic and environmental change on the western Tibetan Plateau revealed by glycerol dialkyl glycerol tetraethers and leaf wax deuterium-to-hydrogen ratios at Aweng Co." Quaternary Research 87, no. 3 (May 2017): 455–67. http://dx.doi.org/10.1017/qua.2017.9.

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AbstractMean annual air temperature (MAAT) and precipitation isotope records for the Holocene were obtained from the analysis of the relative distribution of branched glycerol dialkyl glycerol tetraethers and compound-specific hydrogen isotope ratios of leaf waxes from a sediment core from Aweng Co on the western Tibetan Plateau (WTP). Our results indicate that the Indian monsoon mainly influenced Aweng Co during the Holocene. During the early Holocene, when summer insolation was at a maximum, the monsoonal influence was strong and the climate was warm and wet. Both the summer and winter insolation were relatively weak, and Aweng Co was cool and dry during the middle Holocene (6–3 ka), indicating a weakening of the Indian monsoon. The southward displacement of the Intertropical Convergence Zone and relatively low atmospheric methane content may have contributed to the middle Holocene cooling on the WTP. During the late Holocene, with a further increase in winter insolation and decrease in summer insolation, the summer monsoon weakened and the MAAT on the WTP gradually increased. Depleted leaf wax hydrogen isotope ratios during the late Holocene can be attributed to accelerated glacier melting because of the elevated MAAT.

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Dickinson, William R. "Holocene Sea-Level Record on Funafuti and Potential Impact of Global Warming on Central Pacific Atolls." Quaternary Research 51, no. 2 (March 1999): 124–32. http://dx.doi.org/10.1006/qres.1998.2029.

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AbstractGeomorphic features inherited from the mid-Holocene glacio-hydro-isostatic sea-level highstand that affected the central Pacific region influence the susceptibility of atoll islets to potentially enhanced wave erosion associated with rise in sea level from global warming. Shoreline morphology on multiple islets of Funafuti atoll in central Tuvalu reflects a relative mid-Holocene sea-level highstand 2.2–2.4 m above modern sea level. Typical islets are composed of unconsolidated post-mid-Holocene sediment resting disconformably on cemented coral rubble formed beneath now-emergent mid-Holocene reef flats. Exposed remnants of the lithified islet foundations serve as resistant buttresses protecting the flanks of atoll islets from wave attack. Islets lacking cemented mid-Holocene deposits as part of their internal structure are migratory sand cays with unstable shorelines. Any future sea-level rise ≥0.75 m, bringing high tide above the elevation of mid-Holocene low tide, might trigger enhanced wave erosion of stable atoll islets by overtopping the indurated mid-Holocene reef platforms. As analogous threshold relations are inferred for other central Pacific atolls, the risk of future inundation of island nations cannot be evaluated solely in terms of expected sea-level rise with respect to gross islet elevations.

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Zhang, Qingchun, Fuyuan An, Yifan Xu, and Lu Si. "Reconstruction of Climate and Environmental Evolution in the Northeastern Tibetan Plateau Since the Holocene Based on Aeolian Sediments." Advances in Engineering Technology Research 10, no. 1 (April 19, 2024): 739. http://dx.doi.org/10.56028/aetr.10.1.739.2024.

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This study aims to elucidate the climatic and environmental evolution and its driving mechanisms in the northeastern Tibetan Plateau since the Holocene. Detailed analysis of the KSH profile, combined with Optically Stimulated Luminescence (OSL) dating and the measurement of environmental indicators, including the mean grain size (Mz) and low-frequency magnetic susceptibility (χlf), reveals the characteristics of climatic and environmental changes in this region throughout the Holocene. Further, by comparing the environmental indicators from the KSH profile with summer solar insolation at 65°N, annual precipitation reconstructed from pollen data in Gonghai Lake sediments in Northern China, and the GISP2 δ18O variation curve from Greenland ice cores, this study categorizes the Holocene climatic and environmental evolution into three stages: a cold and dry early Holocene (11.7-8 ka), transitioning to a warm and humid mid-Holocene (8-4 ka), and returning to a cold and dry climate in the late Holocene (~4 ka to present). The findings indicate that the climatic changes in this area throughout the Holocene are consistent with global climatic trends, with variations in the intensity of the East Asian summer monsoon playing a key role in regional climatic evolution.

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Pavlova, M. R., V. M. Lytkin, and G. I. Shaposhnikov. "Paleoecology of peatland in the vicinity of the dune massif – Linde tukulan (Central Yakutia)." Limnology and Freshwater Biology, no. 4 (2024): 516–21. http://dx.doi.org/10.31951/2658-3518-2024-a-4-516.

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Results of investigation of peatland uncovered within an ancient deflationary basin in the south-eastern part of the Linde tukulan (Central Yakutia) are presented. On the basis of lithological, palynological and radiocarbon data, we reconstruction structure of peatland, performed a preliminary reconstruction of the end Late Pleistocene ‒ Holocene landscape and climatic conditions of the peatland and surrounding areas. Three stages of the peatland development were identified: 1) Younger Dryas – Early Holocene, 2) first half of the Holocene, 3) Late Holocene.

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Brown, J., M. Collins, and A. Tudhope. "Coupled model simulations of mid-Holocene ENSO and comparisons with coral oxygen isotope records." Advances in Geosciences 6 (January 9, 2006): 29–33. http://dx.doi.org/10.5194/adgeo-6-29-2006.

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Abstract. The sensitivity of El Niño-Southern Oscillation (ENSO) to changes in mean climate is investigated for simulations of pre-industrial and mid-Holocene (6000 years before present) climate using the Hadley Centre coupled atmosphere-ocean model, HadCM3. Orbitally-forced changes in insolation in the mid-Holocene produce changes in seasonality which may alter ENSO amplitude and frequency. The model simulations are compared with mid-Holocene fossil coral oxygen isotope records from the western Pacific Warm Pool. The coral records imply a reduction of around 60% in the amplitude of interannual variability associated with ENSO in the mid-Holocene, while the model simulates a smaller reduction in ENSO amplitude of around 10%. The model also simulates a slight shift to longer period variability and a weakening of ENSO phase-locking to the seasonal cycle in the mid-Holocene. There is little change in the pattern of ENSO tropical precipitation teleconnections in the simulated mid-Holocene climate.

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Park, Hyo-Seok, Seong-Joong Kim, Andrew L. Stewart, Seok-Woo Son, and Kyong-Hwan Seo. "Mid-Holocene Northern Hemisphere warming driven by Arctic amplification." Science Advances 5, no. 12 (December 2019): eaax8203. http://dx.doi.org/10.1126/sciadv.aax8203.

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The Holocene thermal maximum was characterized by strong summer solar heating that substantially increased the summertime temperature relative to preindustrial climate. However, the summer warming was compensated by weaker winter insolation, and the annual mean temperature of the Holocene thermal maximum remains ambiguous. Using multimodel mid-Holocene simulations, we show that the annual mean Northern Hemisphere temperature is strongly correlated with the degree of Arctic amplification and sea ice loss. Additional model experiments show that the summer Arctic sea ice loss persists into winter and increases the mid- and high-latitude temperatures. These results are evaluated against four proxy datasets to verify that the annual mean northern high-latitude temperature during the mid-Holocene was warmer than the preindustrial climate, because of the seasonally rectified temperature increase driven by the Arctic amplification. This study offers a resolution to the “Holocene temperature conundrum”, a well-known discrepancy between paleo-proxies and climate model simulations of Holocene thermal maximum.

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Jílek, Pavel, Jaroslava Melková, Eliška Růžičková, Jan Šilar, and Antonín Zeman. "Radiocarbon Dating of Holocene Sediments: Flood Events and Evolution of the Labe (Elbe) River in Central Bohemia (Czech Republic)." Radiocarbon 37, no. 2 (1995): 131–37. http://dx.doi.org/10.1017/s0033822200030563.

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We studied the structure and development of the Holocene floodplain of the Labe (Elbe) River by radiocarbon dating sections of the upper and middle courses of the river. We focused on geomorphological and sedimentological conditions, mineralogy and the chemical composition of sediments. We established the stratigraphy of the Holocene deposits of the floodplain. The results of our investigation of fluvial sediments imply that several abrupt changes in temperature and precipitation occurred during the Holocene. These changes led to intervals of hydrological disequilibrium, which caused the formation of two Holocene terraces and a contemporaneous floodplain. The lower terrace was flooded and covered with sediments upon which the recent floodplain formed. During the Holocene, there were four periods during which large tree trunks were deposited in the fluvial sediments, indicating periods of extensive flooding. The supposition that these events were of more global scale is supported by the results of investigations made on the Holocene floodplains of other regions.

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Journal articles on the topic 'Holocene'

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