Discussion: Late Pleistocene sedimentation and landf orm development in western Kalimantan (Indonesian Borneo). Reply by the Authors

Abstract

Quaternary alluvia in Sundaland, as elsewhere, give a simplified picture of the complexity of eustatic, tectonic and bioclimatically driven episodes of erosion and sedimentation during the Quaternary Era. It is premature, therefore, to propose the Batchelor model of the off shore Upper Cainozoic Sundaland sedimentary sequence as a standard for the region. The W Malaysian 'Old Alluvium' includes discrete sedimentary bodies with confirmed upper Pleistocene dates making them co-eval with W Kalimantan alluvial fan terraces whose late Pleistocene age we uphold. We caution the use of humicretes and ferricretes as inter-regional chrono-stratigraphic markers.