Results 1 to 10 of about 52,078 (314)

Reconstructing Permafrost Sedimentological Characteristics and Post-depositional Processes of the Yedoma Stratotype Duvanny Yar, Siberia

open access: yesFrontiers in Earth Science, 2021
Cryogenic weathering is a key driver of periglacial sediment composition and properties. Selective mineral-grain weathering caused by freeze-thaw cycles in permafrost environments has the ability to dominate this process, leading to silt-rich grain-size ...
Denis Shmelev   +5 more
doaj   +1 more source

Deep ice as a geochemical reactor: insights from iron speciation and mineralogy of dust in the Talos Dome ice core (East Antarctica) [PDF]

open access: yesThe Cryosphere, 2021
Thanks to its insolubility, mineral dust is considered a stable proxy in polar ice cores. With this study we show that the Talos Dome ice core (TALDICE, Ross Sea sector of East Antarctica) displays evident and progressive signs of post-depositional ...
G. Baccolo   +15 more
doaj   +1 more source

Seasonality of isotopic and chemical composition of snowpack in the vicinity of Jang Bogo Station, East Antarctica [PDF]

open access: yesPolish Polar Research, 2021
Seasonal variations of the isotopic and chemical compositions of snowpits can provide useful tools for dating the age of the snowpit and examining the sources of aerosol.
Soon Do Hur   +3 more
doaj   +1 more source

Implications of Salt Diapirism in Syn-Depositional Architecture of a Carbonate Margin-to-Edge Transition: An Example from Plataria Syncline, Ionian Zone, NW Greece

open access: yesApplied Sciences, 2023
The present study examines the imprint of salt tectonics on carbonate depositional patterns of the Ionian zone platform edge to slope transition. The study area is part of an overturned rim syncline adjacent to a salt diapir.
Ioannis Vakalas   +8 more
doaj   +1 more source

A note on handaxe knapping products and their breakage taphonomy: an experimental view

open access: yesJournal of Lithic Studies, 2015
The notion that broken artifacts provide a good indication of the taphonomic history of lithic assemblages is commonly accepted in prehistoric archaeology.
Gadi Herzlinger   +2 more
doaj   +1 more source

Sediment management and the renewability of floodplain clay for structural ceramics [PDF]

open access: yes, 2009
The Netherlands has vast resources of clay that are exploited for the fabrication of structural ceramic products such as bricks and roof tiles. Most clay is extracted from the so-called embanked floodplains along the rivers Rhine and Meuse, areas that ...
Hobo, N.   +4 more
core   +2 more sources

Post-Depositional Biodegradation Processes of Pollutants on Glacier Surfaces [PDF]

open access: yesCondensed Matter, 2018
Glaciers are important fresh-water reservoirs for our planet. Although they are often located at high elevations or in remote areas, glacial ecosystems are not pristine, as many pollutants can undergo long-range atmospheric transport and be deposited on glacier surface, where they can be stored for long periods of time, and then be released into the ...
Pittino, F   +6 more
openaire   +3 more sources

Emplacement of sandstone intrusions during contractional tectonics [PDF]

open access: yes, 2016
Acknowledgments We acknowledge the support of sponsoring companies of Phase 3 of the Sand Injection Research Group (SIRG). We are very grateful to John Waldron and Jessica Ross for the constructive reviews of the manuscript.
Alsop, G. Ian   +4 more
core   +1 more source

High Resolution Chemical Stratigraphies of Atmospheric Depositions from a 4 m Depth Snow Pit at Dome C (East Antarctica)

open access: yesAtmosphere, 2021
In this work, we present chemical stratigraphies of two sampling lines collected within a 4 m depth snow pit dug in Dome C during the Antarctic summer Campaign 2017/2018, 12 years after the last reported snow pit. The first sampling line was analyzed for
Laura Caiazzo   +6 more
doaj   +1 more source

Origin and depositional characteristics of supported conglomerates

open access: yesPetroleum Exploration and Development, 2020
The origin and depositional characteristics of supported conglomerates in the Mahu Sag, Junggar Basin, Xinjiang, China, are examined. Based on the terminological comparison, modern sedimentary survey and core description, the initial connotation and ...
Changmin ZHANG   +6 more
doaj   +1 more source

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