Results 101 to 110 of about 396 (129)
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The application of lichenometry in dating of glacier deposits
Geografisk Tidsskrift, 2008Abstract Geografisk Tidsskrift, Danish Journal of Geography 108(1):143–151, 2008 Different field methods, which may result in lichen growth curves and lichenometric dating curves, respectively, are outlined and discussed. Emphasis is laid on various factors that need to be taken into consideration in order to avoid errors. The importance of having many
Eric Steen Hansen
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A biological basis for lichenometry?
Journal of Biogeography, 1999Summary Aim Develop a biologically defensible conceptual model to explain lichen population dynamics. Methods This work critically examines the biological basis for several of the key assumptions that are used to interpret lichen‐size age data. It then presents a biologically defensible conceptual model that can be used to develop computer based ...
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Lichenometry on Calcareous Substrates in the Canadian Rockies
Quaternary Research, 1975AbstractLichen distribution and growth were examined at several sites in the Canadian Rockies between Mt. Robson and Banff townsite to determine the feasibility of lichenometry on calcareous deposits. The only lichen common enough to be of use is Xanthoria elegans, a bright orange lichen with round or elliptical thalli.
Gerald Osborn, John Taylor
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A response to bradwell's commentary on recent statistical studies in lichenometry
Geografiska Annaler: Series A, Physical Geography, 2010International ...
Jomelli, Vincent +5 more
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Lichenometry in the Cordillera Blanca, Peru: “Little Ice Age” moraine chronology
Global and Planetary Change, 2007 Abstract This paper is a comparison and compilation of lichenometric and geomorphic studies performed by two independent teams in the Cordillera Blanca, Peru, in 1996 and 2002 on 66 “Little Ice Age” moraines of 14 glaciers. Using eleven new control points, we recalibrated the initial rapid growth phase of the previously established Rhizocarpon ...
Olga Solomina +2 more
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Lichenometry and earthquake age determination in central Asia
Nature, 1979THE age of rock surfaces can be determined from the size of lichens growing on them1. We present here measurements of the species Lecidea lactea growing on rocks from the avalanches which occurred after the 1907 (Karatag) and the 1949 (Khait) earthquakes in Tadjikistan, Middle Asia.
A. A. NIKONOV, T. Yu. SHEBALINA
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Lichenometry in dating recent glacial landforms and deposits, southeast Iceland
Boreas, 1983Lichenometry curves were derived for the glacier forelands of Breidamerkurjokull and Skalafellsjökull using measurements of the collective species, Rhizocarpon geographicum, from independently dated surfaces deglaciated during the period since the late‐19th century ice maximum episode in the area. The form of the curves appears to be linear.
JOHN E. GORDON, MARTIN SHARP
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Dating San Andreas fault earthquakes with lichenometry
Geology, 1996RegionalrockfalleventsintheSierraNevadaofCaliforniaare caused by distant earthquakes on the northern and southern San Andreasfaultaswellasbylocalearthquakes.Lichenometricdating of synchronous pulses of rockfalls that are presumed to be caused by five historical earthquakes suggests an accuracy of 2.2‐3.5 yr (95% confidence level) for dating young ...
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Geografiska Annaler. Series A, Physical Geography, 1973
A critical examination of the Rhizocarpon geographicum growth curve recently published reveals that it does not appear to have the precise chronological control which is claimed.
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A critical examination of the Rhizocarpon geographicum growth curve recently published reveals that it does not appear to have the precise chronological control which is claimed.
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