Variation in deglacial coralgal assemblages and their paleoenvironmental significance: Global and Planetary Change Sedimentological evidence for bottom-water oxygenation during deposition of the Natih-B Member intrashelf-basinal sediments: Deep-sea bio-physical variables as surrogates for biological assemblages, an example from the Lord Howe Rise. Topical Studies in Oceanography Vulnerability to climate change of marine and coastal fisheries in Mexico. Development of a Pliocene mixed-carbonate siliciclastic reef Limon, Costa Rica. Discontinuity surfaces and event stratigraphy of Okha Shell Limestone Member: Implications for Holocene sea level changes, western India. Journal of Earth System Science
Hunter-Gatherers in the Post-Glacial World
Proceedings of the National Academy of Sciences , Issues, News, and Reviews 23, Perissodactyla, Mammalia , from the middle Pliocene of Aramis, Ethiopia. Journal of Vertebrate Paleontology 33, PLoS Biol 11, e
Uranium-series dating of peat from central and Northern Europe, The Climate of Past Interglacials, /S(07), (), (). Crossref W. J. Rink and B. Forrest, Dating Evidence for the Accretion History of Beach Ridges on Cape Canaveral and Merritt Island, Florida, USA, Journal of Coastal Research, /
Cybulski, Ornella Semino, Ripan S. Malhi and Antonio Torroni Abstract We evaluated migration models to the Americas by employing the information contained in A2a and B2a native mitogenomes from North America. In brief, a minimum of three migration waves is needed to explain the native mitogenome diversity of North America. Most of the contemporary mtDNA variation along the double-continent stems from the first wave that from Beringia followed the Pacific coast route and was dated to thousand years ka ago based on the 16 mitogenome founders identified so far.
Since our B2a mtDNAs coalesce at about ka ago, it is likely that the diagnostic mutational motif of B2a evolved in situ a few millennia after that B2 had already entered and spread along the double continent. The first pacific wave was accompanied or followed by a second inland migratory event, marked by haplogroups X2a and C4c, which affected the ancestral gene pools of modern Amerindian groups of Northern North America, from the Pacific to the Atlantic coasts, including the Na-Dene.
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Download powerpoint Figure 1. Schematic location and duration of the records, for a selection of palaeoenvironmental records in the Southern Levant, 25 BP—present. Records have been tentatively classified into four categories depending on their continuity, resolution and dating constrain: Scale bar, 50 km. In this contribution, I will review the palaeoenvironmental context of the Levant established by previous studies, including some of the more recent developments in Late Quaternary palaeoenvironmental research for the region.
Uranium-series dating of peat from Central and Northern Europe / Manfred Frechen, Melanie Sierralta, Deniz Oezen and Brigitte Urban 9. U-redistribution in fossil reef corals from Barbados, West Indies, and sea-level reconstruction for MIS / Denis Scholz, Augusto Mangini and Dieter Meischner.
Our current understanding of the Quaternary dynamics of the NSS are drawn from: There are also palaeohydrological reconstructions at low spatial resolution for two key former river channels, which reveal wetter conditions particularly during MIS 5 followed by progressive aridification. This PhD offers an opportunity to add a substantial dataset on landscape dynamics in this fascinating and globally important region.
Suggested project ideas include: Methods and training The successful applicant will receive full training in sedimentary analysis and luminescence dating. The intention is for the project s to utilise both full-laboratory dating protocols and the rapidly-advancing field of portable luminescence reader analysis to facilitate a spatial-scale of analysis and volume of samples that cannot be sensibly achieved using time- and resource-intensive laboratory protocols.
The applicant will be eligible to apply for the University of Manchester Faculty studentship competition for funding. A review of chronological evidence and possible landscape development models. Journal of African Earth Sciences 82, A review of the application of optically stimulated luminescence in the region. Journal of Arid Enviroments 93, New chronologies using OSL dating of interdigitated aeolian and water-lain interdune deposits. Palaeogeography, Palaeoclimatology, Palaeoecology ,
The 2000 Radiocarbon Varve/Comparison Issue
G Back to the top Gender: The principal forms are resistivity meters, magnetometers and ground penetrating radar GPR. Geographical Information System s: GIS has rapidly become essential in the interpretation of fieldwork data. The half-life may be used to estimate the age of a sample by measuring the amount of radioactivity that remains. Recent theoretical developments in archaeology have stressed the need to examine our own discipline more critically, and to analyse its structure and ways of thinking.
Uranium-series dating of peat from central and Northern Europe more by Brigitte Urban Interstadial and interglacial peat layers are widespread in the Northern Hemisphere and enable us to reconstruct the vegetation history.
With a population of 4, , in the center and 5, , in its province. The city gave its name to the Angora wool shorn from Angora rabbits, the long-haired Angora goat, the area is also known for its pears, honey, and muscat grapes. The hill remains crowned by the ruins of the old citadel, as with many ancient cities, Ankara has gone by several names over the ages. Following its annexation by the Seljuk Turks in , the city known in many European languages as Angora.
The form Angora is preserved in the names of breeds of different kinds of animals. The oldest settlements in and around the city center of Ankara belonged to the Hattic civilization which existed during the Bronze Age and was gradually absorbed c, — BC by the Indo-European Hittites. In Phrygian tradition, King Midas was venerated as the founder of Ancyra, but Pausanias mentions that the city was far older.
Persian sovereignty lasted until the Persians defeat at the hands of Alexander the Great who conquered the city in BC, Alexander came from Gordion to Ankara and stayed in the city for a short period. Other centers were Pessinos, todays Balhisar, for the Trocmi tribe, the city was then known as Ancyra. The Celtic element was probably relatively small in numbers, an aristocracy which ruled over Phrygian-speaking peasants. However, the Celtic language continued to be spoken in Galatia for many centuries 2.
Turkey — Turkey, officially the Republic of Turkey, is a transcontinental country in Eurasia, mainly in Anatolia in Western Asia, with a smaller portion on the Balkan peninsula in Southeast Europe.
These thick sequences contain a detailed paleoclimatic record from the late Early Pleistocene. Based on the correlation of detailed magnetic susceptibility MS records from Vojvodina with the Chinese loess record and deep-sea isotope stratigraphy we here reconfirm and expand on a stratigraphic model of the Vojvodinian loess-paleosol chronostratigraphic sequence following the Chinese loess stratigraphic system. Variations in MS, dust accumulation rates, and the intensity of pedogenesis demonstrate evidence for a Middle Pleistocene climatic and environmental transition.
Interstadial and interglacial deposits including peat layers are widespread in Northern Europe and enable us to reconstruct the past climate and vegetation history. Such reconstructions require a.
The REVEALS model was applied on pollen records from lakes and bogs to reconstruct the past cover of 25 plant taxa grouped into 10 plant-functional types and three land-cover types [evergreen trees,summer-green deciduous trees, and open land]. The model corrects for some of the biases in pollen percentages by using pollen productivity estimates and fall speeds of pollen, and by applying simple but robust models of pollen dispersal and deposition.
The emerging patterns of tree migration and deforestation between 6k BP and modern time in the REVEALS estimates agree with our general understanding of the vegetation history of Europe based on pollen percentages. However, the degree of anthropogenic deforestation i. This is also the case at 6k in some parts of Europe, in particular Britain and Ireland. Furthermore, the relationship between summer-green and evergreen trees, and between individual tree taxa, differs significantly when expressed as pollen percentages or as REVEALS estimates of tree cover.
These differences play a major role in the reconstruction of European landscapes and for the study of land cover—climate interactions, biodiversity and human resources.
Journal of Coastal Research
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Uranium-series dating of peat from central and northern europe. Listing of Quaternary Own, 28, Journal of Morthern Science, 22, Reconstructing preferred impact on machining development during the code us in CE Europe through rental proxies and X-ray tomography.
The Jurassic of Denmark and Greenland: Ineson The Jurassic succession of Denmark is largely confined to the subsurface with the exception of exposures on the island of Bornholm in the Baltic Sea. In East Greenland, in contrast, the Jurassic is extensively exposed. Comparison of basin evolution in the two regions, which now occur on two separate plates, thus relies on highly different datasets.
It is possible nevertheless to construct an integrated picture allowing testing of hypotheses concerning basin evolution, regional uplift, onset and climax of rifting, relative versus eustatic sea-level changes and sequence stratigraphic subdivision and correlation. On a smaller scale, it is possible to compare the signatures of sequence stratigraphic surfaces as seen on well logs, in cores and at outcrop and of sequences recognised and defined on the basis of very different data types.
Breakdown of the successions into tectonostratigraphic megasequences highlights the high degree of similarity in overall basin evolution and tectonic style. An important difference, however, lies in the timing. Major events such as late Early – Middle Jurassic uplift, followed by onset of rifting, basin reorganisation and rift climax were delayed in East Greenland relative to the Danish region. This has important implications both for regional reconstructions of the rift system and for the understanding and testing of classical sequence stratigraphic concepts involving eustatic versus tectonic controls of basin evolution and stratigraphy.