Results 261 to 270 of about 38,626 (306)

Relative and ‘absolute’ dating of land surfaces

Earth-Science Reviews, 2002
Abstract The dating of land surfaces has long posed problems for geomorphologists. Relative methods (stratigraphic, geomorphic, topographic) are sound and convincing. Exhumed forms may complicate identification and relationships, for both epigene and etch forms have been buried, and exhumed, but in tectonically undisturbed areas, the higher surfaces ...
Watchman, A., Twidale, C.
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Dating of Surface Water, Groundwater, and Sediments

2012
The notion of the age of water is rather ambiguous. The age of water is usually understood to be its residence time in the studied geological object. It is further assumed that either the isotopic composition of the radioactive elements changes only through radioactive decay or that the law which governs their contribution or removal from water with a ...
V. I. Ferronsky, V. A. Polyakov
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Surface Dating Using Rock Varnish

1997
Rock varnish, a dark-colored, magnesium-, iron-, and silica-rich coating that forms on exposed rock surfaces over time, especially in arid and semi-arid regions, has been used as a chronometric dating tool in both archaeology and geology The methods most commonly employed are cation-ratio dating, using differential leaching of cations in the varnish ...
Joan S. Schneider, Paul R. Bierman
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Steps towards surface dating using luminescence

Radiation Measurements, 2000
Whereas luminescence dating applications usually avoid gradients and therefore surfaces, this study explores the requirements and possibilities of dating surfaces using infrared stimulated luminescence. The basic prerequisite for dating applications is a dose-dependent, bleachable and stable luminescence signal. It was found to be fulfilled for crushed
Jan Habermann, Thomas Schilles, Regina Kalchgruber, Günther A. Wagner   +3 more
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Surface luminescence dating of some Egyptian monuments

Journal of Cultural Heritage, 2015
Abstract Surface luminescence dating to Egyptian monuments of the age range 3000 B C to Hellenistic times has been applied for first time. Monuments include the Giza plateau (Sphinx Temple, Valley Temple, Mykerinus), the Qasr-el-Saqha, the Khasekemui tomb and the Seti I Temple with Osirion at Abydos.
Ioannis Liritzis, Asimina Vafiadou
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Lichens: Lichenometric dating of diachronous surfaces

Earth Surface Processes and Landforms, 1995
AbstractThis paper describes software to accompany McCarroll, D. 1993. ‘Modelling late‐Holocene snow‐avalanche activity: incorporating a new approach to lichenometry’, Earth Surface Processes and Landforms 18, 527–539; and McCarroll, D., Matthews, J. A. and Shakesby, R. A. 1995.
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Bayesian Estimation Dating of Lithic Surface Collections

Journal of Archaeological Method and Theory, 2013
Surface assemblages represent the most accessible, representative sample of the archaeological record for the study of human socio-ecological systems at regional scales. However, the difficulty in developing suitable chronological frameworks from surface assemblages has limited their use.
Javier Fernández-López de Pablo, C. Michael Barton   +1 more
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SURFACE EXPOSURE DATING: REVIEW AND CRITICAL EVALUATION

Physical Geography, 1991
The past decade has seen the development and application of over a dozen new methods for quantitative age-determinations of geomorphic surfaces. Some surface exposure dating methods are numerical, including the accumulation of cosmogenic radionuclides 10Be, 14C, 26Al, 36Cl, and 41Ca, accumulation of cosmogenic stable nuclides 3He and 21Ne, 14C dating ...
Ronald I. Dorn, Fred M. Phillips
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Accurate surface exposure dating with lichens

Quaternary Research, 2018
AbstractLichenometry accurately dates exposure times of glacial moraines and landslides when measuring the longest axis of the largest crustose lichen on many blocks, as demonstrated by numerous examples. In Sweden, the sizes ofRhizocarponsubgenusRhizocarpondescribe five pulses of glacial moraine creation in 120 yr. Six historic California earthquakes,
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Dating of microcraters formed on the lunar surface

International Journal of Radiation Applications and Instrumentation. Part D. Nuclear Tracks and Radiation Measurements, 1988
Abstract It has been observed that the latent damage trails due to charged particles produced in glassy spherules are annealed due to the impact of micrometeorites. The impacts are found to ‘reset’ the clock monitoring the time period elapsed since the cooling down of the glassy spherules.
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