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Dating of Quaternary Sediments from Western Borneo, Using Optically Stimulated Luminescence
Author(s) -
Teeuw R.M.,
Rhodes E.J.,
Perkins N.K.
Publication year - 1999
Publication title -
singapore journal of tropical geography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.538
H-Index - 42
eISSN - 1467-9493
pISSN - 0129-7619
DOI - 10.1111/1467-9493.00053
Subject(s) - pleistocene , quaternary , geology , alluvium , optically stimulated luminescence , thermoluminescence dating , holocene , paleontology , deposition (geology) , glacial period , erosion , archaeology , geomorphology , sediment , geochemistry , geography , quartz
Optically Stimulated Luminescence (OSL) dates from five sites in western Kalimantan are compared with 14 C and thermo‐luminescence dates from other sediments in the region. There is now strong evidence that the Old Alluvium of Peninsular Malaysia is of late Pleistocene age and that it can be correlated with the White Sand Complexes of western Borneo. This contrasts with the late Pliocene to mid Pleistocene ages for Old Alluvium, based primarily on stratigraphic deductions, put forward by geoscientists examining the regional tin deposits. This study shows that the upper parts, at least, of the western Borneo White Sand Complexes were deposited mid‐way through the last glaciation (76 ka), with extensive terminal Pleistocene re‐deposition (11.2‐9.8 ka) and at least two gully erosion events during the Holocene (5.8‐3.8 ka and 0.48 ka).