RESEARCH PAPER
A first chronological framework for fluvial terrace deposits of the Kampar Kanan River, Indonesia
1
, Switzerland
2
, Indonesia
3
, Germany
Submission date: 2024-12-31
Acceptance date: 2025-05-28
Online publication date: 2025-06-06
Publication date: 2025-06-06
Corresponding author
Yuniarti Yuskar
Institute of Earth Surface Dynamics, University of Lausanne, 1015, Lausanne, Switzerland
Institute of Earth Surface Dynamics, University of Lausanne, 1015, Lausanne, Switzerland
Geochronometria 2025;52(1)
KEYWORDS
TOPICS
ABSTRACT
Late Quaternary landscape evolution in tropical environments, such as Indonesia, remains poorly constrained due to limited prior studies and mineral properties that are challenging for luminescence dating. In this study, single- and multi-grain luminescence measurements of quartz and K-feldspar were explored for fill terrace deposits at the Kampar Kanan River, Indonesia. Our objective is to develop a chrono-stratigraphic framework that allows the reconstruction of late Quaternary fluvial morpho-dynamics, including climatic change. Quartz measurements were made using blue and green stimulation and single-aliquot regenerative dose (SAR) and double SAR protocols. However, as none of the quartz signals were fast component-dominated, they were not used for dating. Infrared-stimulated luminescence of multiple grains of K-feldspar at 50 ºC (IR50) and post-infrared infrared-stimulated luminescence at 225 ºC (pIR50IRSL225) yielded sufficiently bright signal intensities for dating, and ages were calculated using either the average dose (ADM) or minimum age model (MAM). The luminescence chronology based on fading corrected pIR50IRSL225 data yields ages from Marine Isotope Stage (MIS) 6 or earlier to MIS 1. The chrono-stratigraphy indicates that the river was likely aggradational during climate transitions from wet to dry with the deposition of more gravelly material, and erosional during colder periods when overbank deposition of fines may have been coincident with increased vertical river erosion due to a stronger monsoon.
ACKNOWLEDGEMENTS
This research was partially supported by Universitas Islam Riau (UIR). We thank the Laboratory of Geologi-cal Engineering – UIR (Adi Suryadi and Bayu Harpani) which helped us with the sedimentological analysis. Also, we thank the field assistants who helped us in the field with administration and permit with Kampar Regency (Abdurrahman and Adriyadhi) and collecting lumines-cence and sedimentological samples (thanks to Tristan, Revanda, Peter, Ziadul Faiez and Gilang) and also ship-ping the sample from Indonesia to Switzerland.
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| ISSN: | 1733-8387 |
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