Holocene

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Relative importance of hydrological and climatic controls on Holocene paleoenvironments inferred using diatom and pollen records from a lake in the central Hudson Bay Lowlands, Canada
Holocene - Tập 24 Số 3 - Trang 295-306 - 2014
Charlotte Friel, Sarah A. Finkelstein, A. M. J. Davis
Postglacial paleoenvironmental changes and landscape development in the Hudson Bay Lowlands in subarctic Canada were inferred using sediment properties and diatom and pollen assemblages in the sediments of a lake raised above the surrounding peatlands in an ice-marginal landform. Coarse-grained, inorganic sediments at the base of the Lake AT01 core suggest a high-energy periglacial enviro...... hiện toàn bộ
Internal wars in history: Triggered by natural disasters or socio-ecological catastrophes?
Holocene - Tập 28 Số 7 - Trang 1071-1081 - 2018
Harry F. Lee
Chaotic events that might be regarded as proximate causes in triggering war have rarely been considered in the large- N quantitative studies of historical warfare. Furthermore, it has not been fully determined which types of chaotic events, natural disasters or socio-ecological catastrophes, are more influential in modulating the likelihood of wars. This study is based on the incidents of...... hiện toàn bộ
Fire ecology north and south of the Alps since the last ice age
Holocene - Tập 15 Số 8 - Trang 1214-1226 - 2005
Willy Tinner, Marco Conedera, Brigitta Ammann, André F. Lotter
Wildfires are very rare in central Europe, which is probably why fire effects on vegetation have been neglected by most central European ecologists and palaeoecologists. Presently, reconstructions of fire history and fire ecology are almost absent. We analysed sediment cores from lakes on the Swiss Plateau (Lobsigensee and Soppensee) for pollen and charcoal to investigate the relationship...... hiện toàn bộ
Holocene environmental changes in Namibia inferred from pollen analysis of swamp and lake deposits
Holocene - Tập 1 Số 1 - Trang 8-13 - 1991
Louis Scott, Brigitte Cooremans, J.S. de Wet, J. C. Vogel
Spring deposits exposed during building operations in downtown Windhoek, and lake sediments retrieved from underneath 50 m of water in a sinkhole (Lake Otjikoto), contain pollen profiles which reflect environmental changes in Namibia during the Holocene. At Windhoek moist local conditions are reflected by pollen in the spring deposits which were radiocarbon-dated to between ca. 7000 and 6...... hiện toàn bộ
A chronostratigraphy of mid and late-Holocene slope evolution: Creagan a' Chaorainn, Northern Highlands, Scotland
Holocene - Tập 16 Số 3 - Trang 429-444 - 2006
Eleanor Mary Reid, Michael F. Thomas
Unusual exposure of the drift stratigraphy of a typical, vegetated hillslope in the Northern Highlands of Scotland has allowed reconstruction of its Holocene history. Graphic logging of palaeogully fill, sediment analysis, radiocarbon dating and microscopic investigation of horizon boundaries, link periodic slope instability to changes in hydrology and vegetation cover. The oldest preserv...... hiện toàn bộ
Radiocarbon chronology andδ13C analysis of mid-to late-Holocene aeolian environments, Guadalupe Mountains National Park, Texas, USA
Holocene - Tập 9 Số 3 - Trang 363-371 - 1999
David E. Wilkins, Donald R. Currey
The Red Dunes of Guadalupe Mountains National Park are quartzose sand sheets and dunes stabilized by sparse plant cover. Stratigraphy, radiocarbon dating, and δ13C analysis were examined in two of the larger arroyos for correlating evidence of aeolian deposition, which in this basin is taken as an indication of arid conditions. Four quartz-sand lithostratigraphic unit...... hiện toàn bộ
Holocene evolution of Huangqihai Lake in semi-arid northern China based on sedimentology and luminescence dating
Holocene - Tập 21 Số 8 - Trang 1261-1268 - 2011
Jingran Zhang, Yulian Jia, Zhongping Lai, Hao Long, Linhai Yang
The pattern of Holocene palaeoclimatic change in arid-semiarid northern China is debated. The terminal Huangqihai Lake is located at the northern margin of the modern East Asian summer monsoon and sensitive to climate change. We present here a sedimentary section from Huangqihai lake basin which comprises lacustrine and fluvial deposits and is about 8–9 m above the present lake level. Qua...... hiện toàn bộ
Holocene climate changes in the monsoon/arid transition reflected by carbon concentration in Daihai Lake of Inner Mongolia
Holocene - Tập 16 Số 4 - Trang 551-560 - 2006
Jinchong Xiao, Jintao Wu, Bin Si, Wendong Liang, Toshio Nakamura, Baolin Liu, Yoshio Inouchi
Two sediment cores recovered in the central part of Daihai Lake in north-central China were analysed at 2-to 4-cm intervals for total inorganic and organic carbon (TIC and TOC) concentrations. The TIC concentration is inferred to reflect temperatures over the lake region and an increase in the TIC concentration implies an increase in the temperature. TOC concentration is considered to ref...... hiện toàn bộ
Optical dating of Holocene dune sands from the Hulun Buir Desert, northeastern China
Holocene - Tập 16 Số 3 - Trang 457-462 - 2006
Shenghua Li, Jimin Sun
Aeolian deposits from the Hulun Buir Desert of northeastern China are studied with optically stimulated luminescence dating methods to establish the chronology of dune building phases and climatic changes since the last deglaciation. Our results indicate that wet climate, marked by dune stabilization and soil development in the Hulun Buir Desert, commenced at-11 ka ago, and this early epi...... hiện toàn bộ
Locating the boundary between the Pleistocene and the Holocene in Chinese loess using luminescence
Holocene - Tập 16 Số 6 - Trang 893-899 - 2006
Zhongping Lai, A.G. Wintle
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