Amino acid racemization dating method
stratigraphy, oceanography, paleogeography, paleobiology, and paleoclimatology have been particularly affected.
Their applications include dating correlation, relative dating, sedimentation rate analysis, sediment transport studies, Paleobiology and archaeology have also been strongly affected.
Temperature and humidity histories of microenvironments are being produced at ever increasing rates as technologies advance and technologists accumulate data.
Bone, shell, and sediment studies have contributed much to the paleontological record, including that relating to hominoids.
Verification of radiocarbon and other dating techniques by amino acid racemization and vice versa has occurred.
As a rule of thumb, sites with a mean annual temperature of 30°C have a maximum range of 200 ka and resolution of about 10 ka; sites at 10°C have a maximum age range of ~2 m.y., and resolution generally about 20% of the age; at -10°C the reaction has a maximum age of ~10 m.y., and a correspondingly coarser resolution.
Strong acidity and mild to strong alkalinity induce greatly increased racemization rates.
Chromatographic and electrophoretic separation of proteins and amino acids is dependent upon molecular size, which generally corresponds to molecular weight, and to a lesser extent upon shape and charge.