Results 31 to 40 of about 162,949 (204)

40Ar/39Ar dating of Quaternary lavas in northwest Iran: constraints on the landscape evolution and incision rates of the Turkish-Iranian plateau [PDF]

open access: yes, 2011
We report five new <sup>40</sup>Ar/<sup>39</sup>Ar ages for basaltic lavas in the Maku region of northwest Iran, between ca. 1.87 and 0.40 Ma, which help constrain the tectonic and landscape evolution of this part of the Turkish ...
Allen, M.B.   +11 more
core   +1 more source

Phylogeography of Populus koreana reveals an unexpected glacial refugium in Northeast Asia

open access: yesForestry Research, 2023
The genetic structure of temperate plants in the northern hemisphere was significantly influenced by the Quaternary climate oscillations. A species' biological characteristics and ecological niche are significant elements that can affect its ...
Ji Wang   +10 more
doaj   +1 more source

Geochemical and sedimentological analyses on the Romanian Sphagnum peat bog Tăul fără fund [PDF]

open access: yesMires and Peat
This study focuses on palaeoenvironmental changes in the Bottomless Lake (Tăul fără fund) Sphagnum peat bog situated near Bǎgǎu in Romania. The central research question was how the lake has changed over time, and how environmental factors and human ...
Tamás Zsolt Vári, Pál Sümegi
doaj   +1 more source

Estimation of ELA of the geomorphic unit of Central Iran [PDF]

open access: yesجغرافیا و توسعه, 2019
In this article tried to estimate the ELA in central Iran by Wright, cirque-floor altitude, Terminus-to-head altitude ratio, and Altitude ratio methods. Then to be introduced the best method to estimate the ELA.
Gholam hassan Jafari, nasrin hazrati
doaj   +1 more source

Quaternary stratigraphic regionalization and comprehensive framework in Nanling and adjacent areas

open access: yes地质科技通报, 2021
The Quaternary sediments in the Nanling and adjacent areas are dominated by alluvial, eluvium and cave deposits, which have lacked of a unified stratigraphic and chronological framework.Based on the results of field survey and research on profiles, the ...
Yuanrun Shi   +4 more
doaj   +1 more source

Quaternary DNA : A Multidisciplinary Research Field [PDF]

open access: yes, 2019
The purpose of this Milankovitch review is to explain the significance of Quaternary DNA studies and the importance of the recent methodological advances that have enabled the study of late Quaternary remains in more detail, and the testing of new ...
Parducci, Laura   +2 more
core   +1 more source

Lower- to Middle Pleistocene flank margin caves at Custonaci (Trapani, NW Sicily) and their relation with past sea levels

open access: yesActa Carsologica, 2014
The peninsula of San Vito Lo Capo, 50 km West of Palermo (Sicily), is characterised by the presence of a wide set of evidences of past sea level changes, such as marine terraces, notches, marine and coastal caves with phreatic overgrowths on speleothems,
Rosario Ruggieri, Jo De Waele
doaj   +1 more source

Using the past to envisage a better future: the approach of a Quaternary scientist [PDF]

open access: yes, 2021
The study of the past is of fundamental importance in understanding the processes that control the functioning of the Earth System and the interaction between ecosystems, human society and natural variability.
Petrosino P.   +21 more
core   +1 more source

Quaternary diatomaceous sediments and the geological evolution of lakes, Turkana, Baringo and Bogoria Kenya Rift Valley. [PDF]

open access: yes, 1981
PhdQuaternary lacustrine sediments are described from three contrasting areas within the Kenya Rift Valley. Descriptions are given of the mid-Pleistocene Olorgesailie Formation at Olorgesailie.
Owen, Richard Bernhart
core   +2 more sources

One or Two: How Many Species of the Genus Pyrrhocorax (Passeriformes, Corvidae) Inhabited the Crimea During the Late Pleistocene?

open access: yesZoodiversity, 2023
The article provides an overview of bird remains assigned to the genus Pyrrhocorax Tunstall, 1771 from nine cave sites of Late Pleistocene and Early Holocene age within the Crimean Peninsula (Ukraine).
L. Gorobets, О. Kovalchuk, B. Ridush
doaj   +1 more source

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