A late glacial and holocene record of biological and environmental changes from the crater Lake Albano, Central Italy: An interdisciplinary european project (PALICLAS)

The stratigraphic study of the Stagno di Maccarese, carried out on the sediments exposed in about 7 km of trenches excavated in an area of approximately 1.5 km2, has shown that in the course of the Holocene many environmental variations have taken place. The complex evolution of the marsh is demonstrated by the variations in water salinity and the presence of erosion surfaces and soils between the sediments. In the early Holocene, the area studied was an isolated marsh with water having variable salinity, and it was only about 6000 cal. yr BP that it was encompassed in the system of inner delta marshes. In the delta environment, the water of the marsh was oligohaline until about 9th–8th centuries bc, brackish from 9th–8th centuries bc to about 600 yr BP, and later oligohaline until the 19th century drainage. A number of environmental variations are connected with local phenomena, such as erosion of the beach ridges and Tiber floods, but the others can be correlated chronologically with climatic events recorded at regional and global scale. The millennial variations seem to be connected with changes in insolation, while abrupt variations can be correlated chronologically with the IRD events dated at 8200, 5900, 4200, 2800, 1400 and 500 cal. yr BP.

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New Archaeological, Paleoenvironmental, and 14C Data from the Šventoji Neolithic Sites, NW Lithuania

Radiocarbon ◽

10.1017/s0033822200047640 ◽

2012 ◽

Vol 54 (3-4) ◽

pp. 1017-1031 ◽

Cited By ~ 9

Author(s):

Gytis Piličiauskas ◽

Jonas Mažeika ◽

Andrejus Gaidamavičius ◽

Giedrė Vaikutienė ◽

Albertas Bitinas ◽

...

Keyword(s):

Human Activity ◽

Environmental Changes ◽

Plantago Lanceolata ◽

Late Glacial ◽

Fishing Gear ◽

Pollen Diagram ◽

Remote Areas ◽

The Baltic ◽

Late Glacial And Holocene

Archaeological, geological, and paleoecological investigations supported by radiocarbon dating enabled us to present a reconstruction of chronologically based paleoenvironmental and human activity changes in the Šventoji region, NW Lithuania, during the period 4000–800 cal BC. In addition, we describe the main stages of the Late Glacial and Holocene periods in the area. The Baltic Ice Lake regression was succeeded by a terrestrial period until the Littorina Sea maximal transgression at 5700–5400 cal BC. A marine bay with brackish water was transformed into a freshwater lagoon before the oldest archaeological evidence of human presence, i.e. 4000/3700 cal BC. However, the presence of Cerealia type and Plantago lanceolata pollen dating back to about 4400–4300 cal BC suggests earlier farming activities in the area. Pollen analyses show the minor but continuous role of cereal cultivation after 3250 cal BC. Due to the predominance of the boggy landscape in the immediate vicinity of the Šventoji sites, agricultural fields were situated further away from the sites themselves. Exploitation of remote areas of the freshwater basin by diverse fishing gear was proven by the discovery of a new fishing site, Šventoji 41 (2900–2600 cal BC). This finding together with data of previous research suggest a complex and elaborate coastal economy involving seal hunting and year-round freshwater fishing during the 3rd millennium cal BC. A decline in human activity is seen in the pollen diagram after 1800 cal BC, which could be due to significant environmental changes, including overgrowth of the freshwater lagoon basin with vegetation.

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Late Glacial and Holocene record of climatic change in the southern Rocky Mountains from sediments in San Luis Lake, Colorado, USA

Palaeogeography Palaeoclimatology Palaeoecology ◽

10.1016/j.palaeo.2013.09.016 ◽

2013 ◽

Vol 392 ◽

pp. 146-160 ◽

Cited By ~ 19

Author(s):

Fasong Yuan ◽

Max R. Koran ◽

Andrew Valdez

Keyword(s):

Climatic Change ◽

Rocky Mountains ◽

Late Glacial ◽

Southern Rocky Mountains ◽

San Luis ◽

Holocene Record ◽

Late Glacial And Holocene

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Interdisciplinary studies of spring mire deposits from Radzików (South Podlasie Lowland, East Poland) and their significance for palaeoenvironmental reconstructions

Geochronometria ◽

10.2478/s13386-011-0052-3 ◽

2012 ◽

Vol 39 (1) ◽

pp. 10-29 ◽

Cited By ~ 14

Author(s):

Radosław Dobrowolski ◽

Irena Pidek ◽

Witold Alexandrowicz ◽

Stanisław Hałas ◽

Anna Pazdur ◽

...

Keyword(s):

Radiocarbon Dating ◽

Environmental Changes ◽

Younger Dryas ◽

Late Glacial ◽

Plant Macrofossils ◽

Interdisciplinary Studies ◽

Carbon Stable Isotopes ◽

Calcareous Tufa ◽

Palaeoenvironmental Reconstructions ◽

Late Glacial And Holocene

Abstract The paper presents the results of interdisciplinary (multiproxy) palaeoenvironmental studies of peat — calcareous tufa depositional sequences of spring mire from Radzików site (east Poland). Analyses of three biotic proxies (plant macrofossils, pollen, molluscs) were supplemented with sedimentological, geochemical, oxygen and carbon stable isotopes analyses and radiocarbon dating and used for reconstruction of environmental changes in Late Glacial and Holocene. The obtained results enable us to (1) reconstruct main phases of mire development and (2) determine environmental factors influencing changes of water supply. The object started to develop in Allerød. The Late Glacial and Early Holocene deposit sequence is relatively thick (about 1.0 m), with good palaeoecological record. The boundary between Younger Dryas and Preboreal is especially well confirmed by palynological and malacological analyses as well as radiocarbon dating. The Mesoholocene deposits are considerably worse preserved. Mire development was evaluated in terms of general mire ecology.

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Holocene glacier fluctuations and environmental changes in subantarctic South Georgia inferred from a sediment record from a coastal inlet

Quaternary Research ◽

10.1017/qua.2018.85 ◽

2018 ◽

Vol 91 (1) ◽

pp. 132-148 ◽

Cited By ~ 3

Author(s):

Sonja Berg ◽

Duanne A. White ◽

Sandra Jivcov ◽

Martin Melles ◽

Melanie J. Leng ◽

...

Keyword(s):

Environmental Changes ◽

Late Glacial ◽

Vegetation Coverage ◽

South Georgia ◽

Glacier Fluctuations ◽

Coastal Marine ◽

Lipid Biomarker ◽

Coastal Inlet ◽

Late Glacial And Holocene ◽

The Antarctic

AbstractThe subantarctic island of South Georgia provides terrestrial and coastal marine records of climate variability, which are crucial for the understanding of the drivers of Holocene climate changes in the subantarctic region. Here we investigate a sediment core (Co1305) from a coastal inlet on South Georgia using elemental, lipid biomarker, diatom, and stable isotope data to infer changes in environmental conditions and to constrain the timing of late-glacial and Holocene glacier fluctuations. Because of the scarcity of terrestrial macrofossils and the presence of redeposited and relict organic matter in the sediments, age control for the record was obtained by compound-specific radiocarbon dating of mostly marine-derived n-C16 fatty acids. A basal till layer recovered in Little Jason Lagoon was likely deposited during an advance of local glaciers during the Antarctic cold reversal. After glacier retreat, an oligotrophic lake occupied the site, which transitioned to a marine inlet around 8.0±0.9 ka because of relative sea-level rise. From 7.0±0.6 to 4.0±0.4 ka, reduced vegetation coverage in the catchment, as well as high siliciclastic input and deposition of ice-rafted debris, indicates glacier advances in the terrestrial catchment and likely in the adjacent fjord. A second, less extensive period of glacier advances occurred in the late Holocene, after 1.8±0.3 ka.

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