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The biology behind lichenometric dating curves
Lichenometry - Wikipedia
In archaeology , palaeontology , and geomorphology , lichenometry is a geomorphic method of geochronologic dating that uses lichen growth to determine the age of exposed rock , based on a presumed specific rate of increase in radial size over time. The measured growth rates of R. Lichenometry can provide dates for glacial deposits in tundra environments, lake level changes, glacial moraines , trim lines , palaeofloods,  rockfalls, seismic events associated with the rockfalls,  talus scree stabilization and former extent of permafrost or very persistent snow cover. Among the potential problems of the technique are the difficulty of correctly identifying the species, delay between exposure and colonization, varying growth rates from region to region as well as the fact that growth rates are not always constant over time, dependence of the rate of growth upon substrate texture and composition, climate, and determining which lichen is the largest.
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The form of the curves appears to be linear It is concluded that such studies can provide a supporting dating method for the last two centuries and also indicate the presence of disturbed lichen populations. Lichenometry is a dating method, traditional in geomorphology, used to estimate the age of old monuments or slope deposits Jomelli and Pech, It was developed in the fifties by the botanist Beschel Beschel, , Beschel, to date glacial extension in the Alps. A dating sim based in the world of Evangelion!
Variability of development prices in one person to some other precludes making use of these data for constructing development curves that may be utilized, also locally, in lichenometric relationship. The popular means of calculating ages of build up from sizes of lichens continues despite legitimate critique, and without contract on variety of energy, remedy for mistake, and ways of dimension, sampling, and information maneuvering. A significant supply of mistake is the presumption that the biggest lichen s colonized right after deposition and can endure indefinitely. Present studies on lichen mortality declare that this presumption is untenable. Experiments suggest that numeric lichenometric many years are maybe perhaps maybe not dependable, plus in basic usually do not advance the explanation for Quaternary technology.