Results 91 to 100 of about 3,446 (227)

Martian stick-like structures are not trace fossils: A new protocol for testing ichnogenicity synthesized from paleosol ichnology

, 2021
There are different criteria that are usually analysed independently before identifying a new trace fossil, such as morphological regularity, completeness, dispersion, recurrence and complexity, surface morphology, and context.
Genise, Jorge Fernando
core   +1 more source

Radiocarbon Dating of Leaf Waxes in the Loess-Paleosol Sequence Kurtak, Central Siberia

, 2017
Loess-paleosol sequences (LPS) are valuable archives for Quaternary climate and environmental changes. So far, LPS are generally dated using luminescence, with ~10% uncertainties, or radiocarbon (14C) analyses in the rare cases that charcoal or ...
Bliedtner, Marcel, Roland Zech, Salazar Quintero, Gary Abdiel, Gary Salazar, Marcel Bliedtner, Igor Borodynkin, Mischa Haas, Haas, Mischa, Borodynkin, Igor, Eglinton, Timothy Ian, Szidat, Sönke, Salazar, Gary, Zech, Roland, Timothy Ian Eglinton, Eglinton, Timothy I., Sönke Szidat   +15 more
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Continental hydroclimate during the late Paleocene-early Eocene in the central Rockies: insights from sedimentological and geochemical records preserved in the greater Green River Basin, southwestern Wyoming, U.S.A.

Frontiers in Earth Science
The late Paleocene to early Eocene (LPEE, ∼59–50 Ma) greenhouse condition is the most recent geologic analogue for future climate change induced by increased atmospheric CO2 partial pressure (pCO2).
Min Gao, Min Gao, Min Gao, Majie Fan, Guangsheng Zhuang, Domenico Chiarella   +5 more
doaj   +1 more source

The sturgeon falls paleosol and the composition of the atmosphere 1.1 Ga BP

, 1988
A paleosol is exposed along the north bank of the Sturgeon River, some 25 km SW of Baraga, Michigan. The paleosol was developed on hydrothermally altered Keweenawan basalt and is overlain by the Jacobsville sandstone.
Zbinden, E. A., Dobos, S. K., Holland, H. D., Feakes, C. R.   +3 more
core   +1 more source

Soil water characteristics of Middle Pleistocene paleosol layers on the loess Plateau

, 2011
Soil water plays an important role in water quality monitoring, irrigation scheduling, solute migration, and plant growth. The soil water condition for a field site depends on soil type and related water movement parameters.
Lv Junwei, Wang, YQ, Wang Yunqiang, Wu Tieniu   +3 more
core  

Grain size distribution of quartz isolated from Chinese loess/paleosol

, 2000
Grain size distribution of bulk loess-paleosol and quartz chemically extracted from the loess/paleosol shows that mean size of the bulk samples is always finer than that of the quartz, The original aeolian depositions have been modified to various ...
Sun, YB, An, ZS, Lu, HY
core   +1 more source

Radiocarbon data determined on sediments from loess paleosol sequence BAK

, 2020
This dataset contains radiocarbon (14C) ages analysed on the loess-paleosol sequences (LPS) Balta Albă Kurgan (Romania). The data was obtained to test the robustness of different dating methods (14C analysis, luminescence dating, magnetic stratigraphy ...
Berg, Sonja
core   +1 more source

Provenance of Chinese Loess: Evidence from Stable Lead Isotope

Terrestrial, Atmospheric and Oceanic Sciences, 2011
Twenty-seven samples of typical loess and paleosol strata collected in nine different regions of the Chinese Loess Plateau (CLP) were fractionated into PM1.0, PM2.5, PM10 and Total Suspended Particulates (TSP) (particulate matter with aerodynamic ...
Feng Wu, Steven Sai Hang Ho, Qianli Sun, Simon Ho Sai Ip   +3 more
doaj   +1 more source

Late Quaternary inter-till paleosol and biota at Guelph, Ontario

, 1982
In 1975 and 1976, excavations along Victoria Road in Guelph, Ontario exposed a paleosol and overlying fossiliferous sediments between tills. The site records a glacial advance and retreat with associated glaciofluvial outwash (early Wisconsinan or older)
P. F. Karrow, R. J. Hebda, G. J. Ross, E. W. Presant   +3 more
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Tetraether biomarker records from a loess-paleosol sequence in the western Chinese Loess Plateau

, 2013
The ubiquitous occurrence of glycerol dialkyl glycerol tetraethers (GDGTs) in soils and their ability to record temperature and environmental changes offer the prospect of independently reconstructing continental paleotemperature and paleoenvironment ...
Rao, Zhiguo, Zhiyang eLi, Zhiguo eRao, Jie eZhang, Chen, Fahu, Guodong eJia, Fahu eChen, Zhang, Jie, Li, Zhiyang, Jia, Guodong   +9 more
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