Premium
Role of in situ cosmogenic nuclides 10 be and 26 al in the study of diverse geomorphic processes
Author(s) -
Nishiizumi K.,
Kohl C. P.,
Arnold J. R.,
Dorn R.,
Klein I.,
Fink D.,
Middleton R.,
Lal D.
Publication year - 1993
Publication title -
earth surface processes and landforms
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.294
H-Index - 127
eISSN - 1096-9837
pISSN - 0197-9337
DOI - 10.1002/esp.3290180504
Subject(s) - cosmogenic nuclide , bedrock , geology , alluvium , moraine , surface exposure dating , impact crater , nuclide , meteorite , earth science , radionuclide , glacial period , geomorphology , geochemistry , cosmic ray , astrobiology , physics , quantum mechanics , astrophysics
The central premises of applications of the in situ cosmogenic dating method for studying specific problems in geomorphology are outlined for simple and complex exposure settings. In the light of these general models, we discuss the information that can be derived about geomorphic processes, utilizing concentrations of in situ produced cosmogenic radionuclides 10 Be (half‐life=1·5 ma) and 26 A1 (half‐life=0·7 ma) in a variety of geomorphic contexts: glacial polish and tills; meteorite impact craters; alluvial fans; paleo‐beach ridges; marine terraces; sand dunes; and bedrock slopes. We also compare 10 Be‐ 26 Al data with results obtained by other dating methods. We conclude that the technique of measuring in situ cosmic ray produced nuclides holds promise for quantitative studies of processes and time‐scales in a wide range of geomorphological problems.