title: A critical evaluation of the application of amino acid racemization to geochronology and geothermometry.
abstract: In this review we have critically evaluated the application of the diagenetic racemization of amino acids to geochronology and geothermometry. Although there has been enthusiastic support given to this new method, it is our opinion that recent developments suggest a more cautious approach. We have discussed the pitfalls and inhereent complications, while outlining the advances which have been accomplished. We conclude that this is an innovative approach which will add valuable information to the scientific literature. However, since our fundamental understanding of diagnetic racemization is still limited, many of the age and paleotemperature estimates which have been assigned to fossil specimens may be unreliable.
mesh_terms: D000596:Amino Acids / Q000032:analysis / Q000302:isolation & purification; D001216:Asparagine / Q000378:metabolism; D001419:Bacteria / Q000378:metabolism; D001842:Bone and Bones / Q000032:analysis; D055598:Chemical Phenomena; D002621:Chemistry; D002910:Chronology as Topic; D003094:Collagen / Q000032:analysis; D005580:Fossils; D055593:Geological Phenomena; D005844:Geology; D005973:Glutamine / Q000378:metabolism; D006868:Hydrolysis; D007532:Isoleucine / Q000378:metabolism; D007700:Kinetics; D008903:Minerals / Q000032:analysis; D010163:Paleontology; D012623:Seawater / Q000032:analysis; D013696:Temperature; D014070:Tooth / Q000032:analysis; D014867:Water / Q000032:analysis
chemical_list: D000596:Amino Acids; D008903:Minerals; D007532:Isoleucine; D014867:Water; D005973:Glutamine; D001216:Asparagine; D003094:Collagen