Results 31 to 40 of about 17,704 (249)

A numerical approach to 14C wiggle-match dating of organic deposits: best fits and confidence intervals [PDF]

open access: yes, 2002
14C wiggle-match dating (WMD) of peat deposits uses the non-linear relationship between 14C age and calendar age to match the shape of a sequence of closely spaced peat 14C dates with the 14C calibration curve.
Blaauw, Maarten,   +4 more
core   +3 more sources

Emissions from pre-Hispanic metallurgy in the South American atmosphere [PDF]

open access: yes, 2014
Peer reviewedPublisher ...
De Vleeschouwer, François   +7 more
core   +8 more sources

Ediacaran discs from South America: probable soft-bodied macrofossils unlock the paleogeography of the Clymene Ocean

open access: yesScientific Reports, 2016
The origin, affinity and paleoecology of macrofossils of soft-bodied organisms of the terminal Ediacaran Period have been highly debated. Previous discoveries in South America are restricted to small shelly metazoans of the Nama Assemblage.
M. Arrouy   +6 more
semanticscholar   +1 more source

New insights into postglacial vegetation dynamics and environmental conditions of Península Avellaneda, southwest Patagonia, revealed by plant macrofossils and pollen analysis [PDF]

open access: yesMires and Peat, 2018
Reconstruction of the history of past events becomes more objective when considering an increased number of possible indicators. Combining plant macrofossil analysis with pollen analysis has the potential to give a more detailed picture of the ...
M.E. Echeverría   +3 more
doaj   +1 more source

Pattern of extinction of the woolly mammoth in Beringia. [PDF]

open access: yes, 2012
Extinction of the woolly mammoth in Beringia has long been subject to research and speculation. Here we use a new geo-referenced database of radiocarbon-dated evidence to show that mammoths were abundant in the open-habitat of Marine Isotope Stage 3 (∼45-
Beilman, DW   +7 more
core   +1 more source

Taming the waterways: The Europeanization of Southern Québec's riverside landscapes during the 16th–18th centuries [PDF]

open access: yes, 2018
The arrival of Europeans in the New World effected the interaction of 2 temperate biogeographical eco-zones: the Palaearctic and Nearctic. Alfred Crosby has hypothesized that the success of the Europeans as imperialists was due, in part, to the ability ...
King, Gary, Muller, Thomas
core   +1 more source

Characterisation of Holocene plant macrofossils from North Spanish ombrotrophic mires: vascular plants [PDF]

open access: yesMires and Peat, 2016
Methods and criteria that were used to identify plant macrofossils from four ombrotrophic mires in northern Spain are presented. Twelve monocotyledon and ten dicotyledon species were recorded.
M. Souto   +4 more
doaj   +1 more source

Vertical zonation of testate amoebae in the Elatia Mires, northern Greece : palaeoecological evidence for a wetland response to recent climate change or autogenic processes? [PDF]

open access: yes, 2009
The Elatia Mires of northern Greece are unique ecosystems of high conservation value. The mires are climatically marginal and may be sensitive to changing hydroclimate, while northern Greece has experienced a significant increase in aridity since the ...
A Bouzinos   +59 more
core   +3 more sources

Plant macrofossils, ichnofossils, facies analysis and palaeoenvironment interpretation of the Hojedk Formation in the north of Kerman (Central Iran) [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2019
This study led to identify 30 species and 16 genera of eight different plant macrofossils orders including Equisetales, Cycadales, Bennettitales, Coniferales, Peltaspermales, Ginkgoales, Corystospermales, and Filicales at the Deh-Shiykh section, north of
Hadis Khalilizadeh   +3 more
doaj   +1 more source

Leaf cuticular morphology links Platanaceae and Proteaceae [PDF]

open access: yes, 2005
Int. J. Plant Sci. 166(5):843–855. © 2005 by The University of Chicago.The leaf cuticular morphology of extant species of Platanus was investigated using light and scanning electron microscopy.
Carpenter, R., Hill, R., Jordan, G.
core   +2 more sources

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