The North Makassar Straits: what lies beneath?

Hall, Robert; Cloke, Ian; Nuraini, Siti; Puspita, Sinchia Dewi; Calvert, Stephen; Elders, Chris

doi:10.1144/1354-079309-829

Cited by 26 publications

(13 citation statements)

References 56 publications

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“…The Kutai Basin (Figure ) unconformably covers the Paleozoic‐Mesozoic basement rocks of the Mangkalihat and Paternoster blocks, the Meratus Complex, and the eastern part of the Kuching Zone. The Kutai Basin is interpreted to have formed during middle–late Eocene opening of the Makassar Strait, rifting SW Sulawesi off East Kalimantan (Hall, Cloke, et al, ). This is reflected in the lithological transition from coarse conglomerates to a sand and shale in the basal Kuaro Formation, which is of late middle Eocene age (Moss et al, ; van de Weerd & Armin, ).…”

Section: Geologic Settingmentioning

confidence: 99%

Cenozoic Rotation History of Borneo and Sundaland, SE Asia Revealed by Paleomagnetism, Seismic Tomography, and Kinematic Reconstruction

Advokaat

Marshall

et al. 2018

Tectonics

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SE Asia comprises a heterogeneous assemblage of fragments derived from Cathaysia (Eurasia) in the north and Gondwana in the south, separated by suture zones representing closed former ocean basins. The western part of the region comprises Sundaland, which was formed by Late Permian‐Triassic amalgamation of continental and arc fragments now found in Indochina, the Thai Penisula, Peninsular Malaysia, and Sumatra. On Borneo, the Kuching Zone formed the eastern margin of Sundaland since the Triassic. To the SE of the Kuching Zone, the Gondwana‐derived continental fragments of SW Borneo and East Kalimantan accreted in the Cretaceous. South China‐derived fragments accreted to north of the Kuching Zone in the Miocene. Deciphering this complex geodynamic history of SE Asia requires restoration of its deformation history, but quantitative constraints are often sparse. Paleomagnetism may provide such constraints. Previous paleomagnetic studies demonstrated that Sundaland and fragments in Borneo underwent vertical axis rotations since the Cretaceous. We provide new paleomagnetic data from Eocene‐Miocene sedimentary rocks in the Kutai Basin, east Borneo, and critically reevaluate the published database, omitting sites that do not pass widely used, up‐to‐date reliability criteria. We use the resulting database to develop an updated kinematic restoration. We test the regional or local nature of paleomagnetic rotations against fits between the restored orientation of the Sunda Trench and seismic tomography images of the associated slabs. Paleomagnetic data and mantle tomography of the Sunda slab indicate that Sundaland did not experience significant vertical axis rotations since the Late Jurassic. Paleomagnetic data show that Borneo underwent a ~35° counterclockwise rotation constrained to the Late Eocene and an additional ~10° counterclockwise rotation since the Early Miocene. How this rotation was accommodated relative to Sundaland is enigmatic but likely involved distributed extension in the West Java Sea between Borneo and Sumatra. This Late Eocene‐Early Oligocene rotation is contemporaneous with and may have been driven by a marked change in motion of Australia relative to Eurasia, from eastward to northward, which also has led to the initiation of subduction along the eastern Sunda trench and the proto‐South China Sea to the south and north of Borneo, respectively.

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Section: Geologic Settingmentioning

confidence: 99%

Cenozoic Rotation History of Borneo and Sundaland, SE Asia Revealed by Paleomagnetism, Seismic Tomography, and Kinematic Reconstruction

Advokaat

Marshall

et al. 2018

Tectonics

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“…The earliest phase of the orogen proper dates from c . 45 Ma, when rifting opened the Makassar Strait separating western Sulawesi from the east coast of Kalimantan, and isolating it from Sundaland (Hall et al ., 2009b).…”

Section: Geological Development Of the Indonesian Orogenmentioning

confidence: 99%

Biogeology of Wallacea: geotectonic models, areas of endemism, and natural biogeographical units

Michaux¹

2010

Biological Journal of the Linnean Society

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The concepts of biogeographical regions and areas of endemism are briefly reviewed prior to a discussion of what constitutes a natural biogeographical unit. It is concluded that a natural biogeographical unit comprises a group of endemic species that share a geological history. These natural biogeographical units are termed Wallacean biogeographical units in honour of the biogeographer A.R. Wallace. Models of the geological development of Indonesia and the Philippines are outlined. Areas of endemism within Wallacea are identified by distributional data, and their relationship to each other and to the adjacent continental regions are evaluated using molecular phylogenies from the literature. The boundaries of these areas of endemism are in broad agreement with earlier works, but it is argued that the Tanimbar Islands are biologically part of south Maluku, rather than the Lesser Sundas, and that Timor (plus Savu, Roti, Wetar, Damar, and Babar) and the western Lesser Sundas form areas of endemism in their own right. Wallacean biogeographical units within Wallacea are identified by congruence between areas of endemism and geological history. It is concluded that although Wallacea as a whole is not a natural biogeographical region, neither is it completely artificial as it is formed from a complex of predominantly Australasian exotic fragments linked by geological processes within a complex collision zone. The Philippines are argued to be an integral part of Wallacea, as originally intended. © 2010 The Linnean Society of London, Biological Journal of the Linnean Society, 2010, 101, 193–212.

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“…It varies in width from 100 to 200 km and is approximately 600 km in length. It formed in the middle Eocene, when rifting and sea floor spreading was initiated (Hall et al 2009). The onset of compression in the Late Miocene to Pliocene resulted in fold-and-thrust belt development along the margins of the Makassar Strait Basins (Bergman et al 1996).…”

Section: Geological Frameworkmentioning

confidence: 99%

Indonesian Throughflow as a preconditioning mechanism for submarine landslides in the Makassar Strait

Brackenridge

Nicholson

Sapiie

et al. 2020

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The manuscript will undergo copyediting, typesetting and correction before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the book series pertain. Although reasonable efforts have been made to obtain all necessary permissions from third parties to include their copyrighted content within this article, their full citation and copyright line may not be present in this Accepted Manuscript version. Before using any content from this article, please refer to the Version of Record once published for full citation and copyright details, as permissions may be required.

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The North Makassar Straits: what lies beneath?

Cited by 26 publications

References 56 publications

Cenozoic Rotation History of Borneo and Sundaland, SE Asia Revealed by Paleomagnetism, Seismic Tomography, and Kinematic Reconstruction

Cenozoic Rotation History of Borneo and Sundaland, SE Asia Revealed by Paleomagnetism, Seismic Tomography, and Kinematic Reconstruction

Biogeology of Wallacea: geotectonic models, areas of endemism, and natural biogeographical units

Indonesian Throughflow as a preconditioning mechanism for submarine landslides in the Makassar Strait

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