Results 11 to 20 of about 52,078 (314)

Site formation process of the Dadong Paleolithic site in Jilin province, China: A geoarchaeological approach

open access: yesFrontiers in Earth Science, 2023
The Dadong site, located in the Changbaishan region of Jilin province, China, is an important Upper Paleolithic site characterized by its large distribution area and abundant stone artifacts.
Huiru Lian   +6 more
doaj   +1 more source

Animal residues found on tiny Lower Paleolithic tools reveal their use in butchery [PDF]

open access: yes, 2019
Stone tools provide a unique window into the mode of adaptation and cognitive abilities of Lower Paleolithic early humans. The persistently produced large cutting tools (bifaces/handaxes) have long been an appealing focus of research in the ...
Agam, Aviad   +5 more
core   +1 more source

Late Holocene multisource material input into the Aegean Sea: depositional and post-depositional processes [PDF]

open access: yesOceanologica Acta, 2003
The upper ~50 cm sediments in the deep-sea Aegean Sea were generally deposited through hemipelagic rain as indicated by paucity of terrigenous sand-sized particles, abundance of clay-sized materials and lack of turbiditic beds. However, quartz sand-sized grains, black debris, higher C org content and C/N ratio attest to a significant river-borne supply
Giresse, P   +2 more
openaire   +1 more source

Characteristics of modern atmospheric dust deposition in snow on the Penny Ice Cap, Baffin Island, Arctic Canada [PDF]

open access: yes, 1998
We evaluated the concentration, size and distribution of insoluble dust microparticles in snowpits on the Penny Ice Cap (PIC), Baffin Island, to define (1) the characteristics of modern atmospheric dust deposition at the site, (2) the relative ...
Wake, Cameron P   +2 more
core   +2 more sources

Microbially assisted recording of the Earth’s magnetic field in sediment

open access: yesNature Communications, 2016
Sediments record variations of the Earth’s magnetic field via the alignment of magnetic grains during and after deposition, yet the role of post-depositional processes remains unclear. Here, the authors present experiments showing how microbially-induced
Xiangyu Zhao   +3 more
doaj   +1 more source

Isotopic effects of nitrate photochemistry in snow: a field study at Dome C, Antarctica [PDF]

open access: yesAtmospheric Chemistry and Physics, 2015
Stable isotope ratios of nitrate preserved in deep ice cores are expected to provide unique and valuable information regarding paleoatmospheric processes.
T. A. Berhanu   +6 more
doaj   +1 more source

Predicting the depositional environments and transportation mechanisms of sediments using granulometric parameters, bivariate and multivariate analyses [PDF]

open access: yes, 2019
Grain size distribution and classes present in sedimentary rocks are responsive to the physical changes of the transporting media and the basin of deposition.
Ikhane, Phillips R.   +2 more
core   +1 more source

Morphology of Lipari offshore (Southern Tyrrhenian Sea) [PDF]

open access: yes, 2016
High-resolution multibeam bathymetry was recently collected around Lipari, the largest and most densely populated island of the Aeolian Archipelago (Southern Tyrrhenian Sea).
Bosman, A.   +4 more
core   +2 more sources

Episodic dolomitization of Paleozoic limestones in the Kinta Valley, Malaysia: Implications on porosity evolution and reservoir properties

open access: yesEnergy Geoscience, 2021
Carbonates undergo a variety of physical, mineralogical, chemical changes during depositional and post-depositional stages that are of interest to exploration geologists and sedimentologists.
Poon Xin Hui   +4 more
doaj   +1 more source

Geochemical Characteristics of Limestone of Wonosari-Punung Formation, Gunungkidul Regency, Yogyakarta, Indonesia

open access: yesIndonesian Journal on Geoscience, 2018
DOI: 10.17014/ijog.5.2.179-197A geochemical study was carried out to determine the geochemical characteristics of limestone in Wonosari-Punung Formation, and to suggest its depositional conditions and the source of rare earth elements.
Didik Dwi Atmoko   +2 more
doaj   +1 more source

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