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The Towuti Drilling Project: paleoenvironments, biological evolution, and geomicrobiology of a tropical Pacific lake

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Russell James M., Bijaksana Satria, Vogel Hendrik, Melles Martin, Kallmeyer Jens, Ariztegui Daniel, Crowe Sean, Fajar Silvia, Hafidz Abdul, Haffner Doug, Hasberg Ascelina, Ivory Sarah, Kelly Christopher, King John, Kirana Kartika, Morlock Marina, Noren Anders, O&apos Grady Ryan, Ordonez Luis, Stevenson Janelle, von Rintelen Thomas, Vuillemin Aurele, Watkinson Ian, Wattrus Nigel, et al.,
Project Climate history of the Indo-Pacific region and subsurface biosphere of Lake Towuti: The Swiss contribution to the ICDP Towuti Drilling Project (research part)
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Original article (peer-reviewed)

Journal Scientific Drilling
Page(s) 29 - 40
Title of proceedings Scientific Drilling
DOI 10.5194/sd-21-29-2016

Open Access

URL http://doi.org/10.5194/sd-21-29-2016
Type of Open Access Publisher (Gold Open Access)

Abstract

The Towuti Drilling Project (TDP) is an international research program, whose goal is to understand long-term environmental and climatic change in the tropical western Pacific, the impacts of geological and environmental changes on the biological evolution of aquatic taxa, and the geomicrobiology and biogeochemistry of metal-rich, ultramafic-hosted lake sediments through the scientific drilling of Lake Towuti, southern Sulawesi, Indonesia. Lake Towuti is a large tectonic lake at the downstream end of the Malili lake system, a chain of five highly biodiverse lakes that are among the oldest lakes in Southeast Asia. In 2015 we carried out a scientific drilling program on Lake Towuti using the International Continental Scientific Drilling Program (ICDP) Deep Lakes Drilling System (DLDS). We recovered a total of ∼ 1018 m of core from 11 drilling sites with water depths ranging from 156 to 200 m. Recovery averaged 91.7 %, and the maximum drilling depth was 175 m below the lake floor, penetrating the entire sedimentary infill of the basin. Initial data from core and borehole logging indicate that these cores record the evolution of a highly dynamic tectonic and limnological system, with clear indications of orbital-scale climate variability during the mid- to late Pleistocene.
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