Southwest Sulawesi Research Articles

The origin of southwest Sulawesi and other Indonesian terranes: a biological view

A generalised track linking geographically dispersed areas in Indonesia with Burma is identified from moth and bird distributional data. These areas include Sulawesi, the Philippines, Sabah (northern Borneo), Java, Sumatra, Mentawai, the Nicobars, and Andamman Islands. A cladistic analysis of Sulawesian Dacus (Diptera: Tehritidae) shows that Sabah and Sulawesi are sister areas and together form a sister area to Sulawesi + Java + Sumatra + Thailand. Cladograms for other taxa are reviewed and these also lend support to the hypothesis that these now diverse Indonesian fragments share a closer biotic relationship to each other than they do to other areas. The geological history of the region is discussed and evidence that these Indonesian fragments are terranes which became sutured to the continental margin of Sundaland in the late Cretaceous or early Tertiary is discussed. The congruence between distributional patterns and tectonic history requires further investigation, but a working hypothesis suggests that these Indonesian terranes are linked to Mount Victoria Land, and that all were derived from a Gondwanic source area close to India.

Deposition and diagenesis of Miocene limestones, Senkang Basin, Sulawesi, Indonesia

Miocene Knoll-reef limestones form gas reservoirs in the East Senkang Basin of southwest Sulawesi. They are composed predominantly of packstones and wackestones, but grainstones and boundstones also occur. Uplift and exposure of the reef occurred during deposition. This, together with burial, resulted in dissolution of bioclasts, precipitation of meniscus and blocky spar cements, extensive fissuring of the rock and filling of the fissures by internal sediment, predominantly carbonate silts. The meniscus cements are unusual in that they occur mostly within biomouldic pores, particularly after corals. The meniscus form of the cement may be a result of air bubbles trapped within the complex pore-system formed from the dissolution of corals. The fissures, which are probably a product of fracturing associated with local fault movements, form complex networks linking biomouldic pores. Carbonate internal sediments, mostly crystal silt but also pelleted, which form thin graded layers in places, completely fill the fissures and adjacent biomouldic pores. These features, in association with bioclasts dissolution and meniscus cements, suggest a vadose origin. This interpretation is supported by the variation in the ϵ 180 and ϵ 130 stable isotope values of the internal sediment compared with the depositional matrix. Equant sparry calcite cements are locally extensive. On the basis of only moderately depleted ϵ 80 values and elevated strontium values they are tentatively interpreted to be of marine phreatic origin.

Inter‐site variability in southwest Sulawesi: results of the 1969 Australian‐Indonesian Archaeological Expedition

Archaeology in OceaniaVolume 21, Issue 1 p. 76-84 Article Inter-site variability in southwest Sulawesi: results of the 1969 Australian-Indonesian Archaeological Expedition Valerie Chapman, Valerie Chapman 14 Rymill Place, Mawson, A.C.T. 2607Search for more papers by this author Valerie Chapman, Valerie Chapman 14 Rymill Place, Mawson, A.C.T. 2607Search for more papers by this author First published: April 1986 https://doi.org/10.1002/j.1834-4453.1986.tb00127.xCitations: 4AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Volume21, Issue1April 1986Pages 76-84 RelatedInformation