2015
DOI: 10.1007/s10933-015-9857-z
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Depositional modes and lake-level variability at Lake Towuti, Indonesia, during the past ~29 kyr BP

Abstract: Lake Towuti (2.5°S, 121.5°E) is a longlived, tectonic lake located on the Island of Sulawesi, Indonesia, and in the center of the Indo-Pacific warm pool (IPWP). Lake Towuti is connected with upstream lakes Matano and Mahalona through the Mahalona River, which constitutes the largest inlet to the lake. The Mahalona River Delta is prograding into Lake Towuti's deep northern basin thus exerting significant control on depositional processes in the basin. We combine high-resolution seismic reflection and sedimentol… Show more

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Cited by 34 publications
(66 citation statements)
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“…Previous sedimentary records from Lake Towuti span the last ∼ 60 kyr BP, and contain an intriguing record of past climate that differs markedly from that of the subtropics (Russell et al, 2014). In particular, we observed grassland expansion, lowered lake levels, and strong drying during the last glacial maximum (LGM) relative to both marine isotope stage 3 (∼ 30-60 kyr BP) and the Holocene (Costa et al, 2015;Konecky et al, 2016;Russell et al, 2014;Vogel et al, 2015). The strong glacial-interglacial signal at Lake Towuti challenges the hypothesis that tropical hydroclimate is predominantly controlled by precessional orbital forcing, with little influence of glacial-interglacial changes in climate boundary conditions (Carolin et al, 2013;Meckler et al, 2012).…”
Section: Introductionmentioning
confidence: 74%
“…Previous sedimentary records from Lake Towuti span the last ∼ 60 kyr BP, and contain an intriguing record of past climate that differs markedly from that of the subtropics (Russell et al, 2014). In particular, we observed grassland expansion, lowered lake levels, and strong drying during the last glacial maximum (LGM) relative to both marine isotope stage 3 (∼ 30-60 kyr BP) and the Holocene (Costa et al, 2015;Konecky et al, 2016;Russell et al, 2014;Vogel et al, 2015). The strong glacial-interglacial signal at Lake Towuti challenges the hypothesis that tropical hydroclimate is predominantly controlled by precessional orbital forcing, with little influence of glacial-interglacial changes in climate boundary conditions (Carolin et al, 2013;Meckler et al, 2012).…”
Section: Introductionmentioning
confidence: 74%
“…L). Chromium‐spinels have been detected by EDX analysis on thin sections in the basal, sandy parts of turbidites occurring in a piston core (Co1230) taken in front of the Mahalona Delta (Vogel et al ., ). Spinels observed in the smear slides of Lake Towuti's sediments are quite large and almost euhedral mineral grains.…”
Section: Discussionmentioning
confidence: 99%
“…Material was sampled from the top 5 cm of the recovered grab sample. Based on mean Holocene sedimentation rates of 0·205 mm per year at TDP Site 1 (Russell et al ., ) and 0·235 mm per year (excluding event layers) close to TDP Site 2 (Vogel et al ., ), the deepwater samples integrate ca 200 to 250 years.…”
Section: Methodsmentioning
confidence: 97%
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“…This mainly affects sedimentation at the deep site (Vogel et al, 2015). In contrast, shorter settling times at the shallow site (i.e., 60 m vs. 200 m depth at the deep site) likely increase the chances of preserving eDNA from primary producers in the shallow site sediments (i.e., 60 m depth).…”
Section: Discussionmentioning
confidence: 99%