Results 31 to 40 of about 6,637 (213)
Geochronological implications of 210Pb and 137Cs mobility in cave guano deposits
International Journal of Speleology, 2021 Some recent publications on the paleo- and historical environmental interpretation of bat guano sequences have relied on 210Pb and 137Cs distribution to establish age-depth models, even when these are at odds with radiocarbon models in the lower parts of
Donald McFarlane, Joyce Lundberg
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Radiocarbon age differences between coexisting foraminiferal species [PDF]
Paleoceanography, 1999 Radiocarbon‐age measurements on single species of foraminifera from a core on the Ceara Rise demonstrate the importance of the joint effect of bioturbation and variable rain abundance of foraminifera. The relatively high mixed layer ages for Pulleniatina obliquiloculata reflect, at least in part, an early Holocene peak in its abundance while the ...
Wallace Broecker +4 more
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Studia Universitatis Babes-Bolyai Chemia, 2017 The article reports the AMS (accelerator mass spectrometry) radiocarbon dating results of Sagole Big tree, a giant African baobab from Limpopo, South Africa. Several wood samples were collected from the walls of its inner cavity and dated by radiocarbon.
Adrian PATRUT +7 more
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RADIOCARBON DATING OF THE HISTORIC GRAND BAOBAB OF MAHAJANGA, MADAGASCAR
Studia Universitatis Babes-Bolyai Chemia, 2023 The article reports the AMS (accelerator mass spectrometry) radiocarbon investigation of the historic Grand Baobab of Mahajanga. The largest African baobab of Madagascar exhibits a cluster structure, which consists of 6 fused ordinary stems and of 3 ...
Adrian PATRUT +6 more
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The Anatomical Record, EarlyView.Abstract The Pleistocene is a key period for understanding the evolutionary history and palaeobiogeography of the European rabbit (Oryctolagus cuniculus). The species was first documented in southeastern Iberia at the beginning of the Middle Pleistocene and appears to have rapidly spread throughout Southwestern Europe, where it was found in numerous ...
Maxime Pelletier
wiley +1 more source
Errors in the radiocarbon dating of deposits in Finland from the time of deglaciation [PDF]
Bulletin of the Geological Society of Finland, 1974 Some radiocarbon dates of sediments from the area of the Salpausselkä moraines, and north of them in the area deglaciated after c. 10200 B.P., are too old and at variance with a number of radiocarbon dates for the regional pollen assemblage zones ...
J.J. Donner, H. Jungner
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Fisheries and Aquatic Sciences, 2021 Gindai (Pristipomoides zonatus) is one of six snappers in a management complex called the Deep 7 of the Hawaiian Islands. Little is known about its life history and a preliminary analysis of otolith thin sections
Allen H. Andrews, Taylor R. Scofield
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The Anatomical Record, EarlyView.Abstract The human mandibular symphysis concentrates multiaxial loads during function and remodels throughout growth, but the precise mechanisms underlying cortical bone shape during growth remain relatively unexplored. Approaches based solely on thickness or external cortical contours provide only partial insights and do not capture the functional ...
Ana Ribeiro +3 more
wiley +1 more source
Estimating bioturbation from replicated small-sample radiocarbon ages.
Paleoceanography and Paleoclimatology, 2020 Abstract Marine sedimentary records are a key archive when reconstructing past climate; however, mixing at the seabed (bioturbation) can strongly influence climate records, especially when sedimentation rates are low.
Dolman, Andrew M. +4 more
openaire +3 more sources
Archaeology in Oceania, EarlyView.ABSTRACT This paper reports on the excavation of a cache of stone artefacts, buried on the bank of a waterhole or ‘billabong’ in central western Queensland. This is an extremely rare find, and yet it is the second such site to be reported within less than a 10 km radius.
Yinika L. Perston +5 more
wiley +1 more source