Climatic and tectonic controls on source-to-sink processes in the tropical, ultramafic catchment of Lake Towuti, Indonesia
Climatic and tectonic controls on source-to-sink processes in the tropical, ultramafic catchment of Lake Towuti, Indonesia
复制标题
印度尼西亚托乌提湖热带超镁铁质流域的气候和构造对源-汇过程的控制
DOI：
10.1007/s10933-018-0059-3
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发表时间：
2018
影响因子：
2.1
通讯作者：
the TDP Science Team
中科院分区：
文献类型：
--
作者：
Morlock M.A;Vogel H;Nigg V;Ordoñez L;Hasberg A.K.M;Melles M;Russell J.M;Bijaksana S. ;the TDP Science Team
潮湿的热带景观易受强烈的风化和侵蚀，这对沉积物的移动和沉积产生了强烈的影响。在这种背景下，我们的目标是了解地貌和水文气候如何改变热带湖泊及其构造活跃集水区的侵蚀和沉积物组成的方式和强度。Towuti湖（2.75°S，121.5°E）是印度尼西亚最古老和最深的湖泊之一，在几个冰川-间冰期循环中有不间断的湖泊沉积。在这里，我们提出了一套新的Towuti湖表面沉积物，基岩和土壤样本的集水区，和两个现有的沉积物岩心，延伸到30,000和60,000年前的结果。我们研究了流域形态，土壤性质，地球化学，粘土和散装矿物。从几条河长剖面的结果显示出明显的构造活动的迹象，这增强了河流的切口，有利于质量运动过程，并与河流沉积物的再活化，强烈影响现代沉积在湖泊。来自马哈拉纳河的物质是该湖最大的流入量，在托乌蒂北方盆地的现代沉积物组成中占主导地位。河流将贫铝和富镁沉积物（主要是蛇纹岩）输送到湖泊，表明河流切入富镁蛇纹橄榄岩基岩。相对较小，但重要的额外贡献的材料，来自直接红土派生输入和Loeha河，这两个提供富铝和镁贫沉积物的湖泊。随着时间的推移，铝/镁和高岭石-蛇纹石的比例变化很大，主要是在响应湖平面波动驱动的水文气候变化。在过去的60，000年中，铝/镁和高岭石-蛇纹石的比值显示变化敏感的气候边界条件的变化跨越冰川-间冰期循环，而构造活动对这些短的时间尺度上的沉积物成分的变化影响较小。
Humid tropical landscapes are subject to intense weathering and erosion, which strongly influence sediment mobilisation and deposition. In this setting, we aimed to understand how geomorphology and hydroclimate altered the style and intensity of erosion and sediment composition in a tropical lake and its tectonically active catchment. Lake Towuti (2.75°S, 121.5°E) is one of the oldest and deepest lakes in Indonesia, with uninterrupted lacustrine sedimentation over several glacial–interglacial cycles. Here we present results from a novel set of Lake Towuti surface sediment, bedrock and soil samples from the catchment, and two existing sediment cores that extend to 30,000 and 60,000 years before present. We studied the catchment morphology, soil properties, geochemistry, and clay and bulk mineralogy. Results from several river long profiles show clear signs of tectonic activity, which enhances river incision, favours mass movement processes, and together with remobilisation of fluvial deposits, strongly influences modern sedimentation in the lake. Material from the Mahalona River, the lake’s largest inflow, dominates modern sediment composition in Towuti’s northern basin. The river transports Al-poor and Mg-rich sediments (mainly serpentines) to the lake, indicating river incision into the Mg-rich serpentinised peridotite bedrock. Relatively small, but important additional contributions of material, come from direct laterite-derived input and the Loeha River, which both provide Al-rich and Mg-poor sediment to the lake. Over time, the Al/Mg and kaolinite-to-serpentine ratios varied strongly, primarily in response to lake-level fluctuations driven by hydroclimatic changes. In the past 60,000 years, both the Al/Mg and kaolinite-to-serpentine ratios showed variations sensitive to changes in climate boundary conditions across glacial-interglacial cycles, while tectonic activity had less influence on changes in sediment composition on these short time-scales.
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距今 53,000 年以来印度尼西亚苏拉威西中部植被和水文变化的化合物特定碳同位素记录
DOI：
--
发表时间：
2015
期刊：
影响因子：
--
作者：
S. Wicaksono;J. Russell;S. Bijaksana
通讯作者：
S. Bijaksana
影响因子：
4
作者：
S. Wicaksono;J. Russell;A. Holbourn;W. Kuhnt
通讯作者：
S. Wicaksono;J. Russell;A. Holbourn;W. Kuhnt
影响因子：
1.2
作者：
J. Russell;S. Bijaksana;H. Vogel;M. Melles;J. Kallmeyer;D. Arizteguí;S. Crowe;S. J. Fajar;A. Hafidz;D. Haffner;Ascelina K. M. Hasberg;S. Ivory;C. Kelly;J. King;Kartika Hajar Kirana;Marina A. Morlock;A. Noren;Ryan O’Grady;Luis Ordóñez;J. Stevenson;T. Rintelen;A. Vuillemin;I. Watkinson;N. Wattrus;S. Wicaksono;T. Wonik;K. Bauer;A. Deino;A. Friese;C. Henny;Imran;R. Marwoto;L. Ngkoimani;S. Nomosatryo;L. O. Safiuddin;R. Simister;G. Tamuntuan
通讯作者：
J. Russell;S. Bijaksana;H. Vogel;M. Melles;J. Kallmeyer;D. Arizteguí;S. Crowe;S. J. Fajar;A. Hafidz;D. Haffner;Ascelina K. M. Hasberg;S. Ivory;C. Kelly;J. King;Kartika Hajar Kirana;Marina A. Morlock;A. Noren;Ryan O’Grady;Luis Ordóñez;J. Stevenson;T. Rintelen;A. Vuillemin;I. Watkinson;N. Wattrus;S. Wicaksono;T. Wonik;K. Bauer;A. Deino;A. Friese;C. Henny;Imran;R. Marwoto;L. Ngkoimani;S. Nomosatryo;L. O. Safiuddin;R. Simister;G. Tamuntuan
影响因子：
3.5
作者：
Ascelina K. M. Hasberg;S. Bijaksana;P. Held;J. Just;M. Melles;Marina A. Morlock;S. Opitz;J. Russell;H. Vogel;V. Wennrich
通讯作者：
Ascelina K. M. Hasberg;S. Bijaksana;P. Held;J. Just;M. Melles;Marina A. Morlock;S. Opitz;J. Russell;H. Vogel;V. Wennrich
利用反射光谱表征印度尼西亚托乌提湖的粘土矿物学
影响因子：
2.1
作者：
A. Weber;J. Russell;T. Goudge;M. Salvatore;J. Mustard;S. Bijaksana
通讯作者：
S. Bijaksana