Neogene history of the Indonesian Throughflow

Kuhnt, Wolfgang; Holbourn, Ann; Hall, Robert; Zuvela, M.; Käse, Rolf H.

doi:10.1029/149gm16

Cited by 136 publications

(155 citation statements)

References 95 publications

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“…The northwards movement of Australia and simultaneously the southward motion of the Sunda Block commencing at 14 Ma have been reported to lead to major adjustment of the Indian Ocean circulation system (Kuhnt et al, 2004;Gourlan et al, 2008). On the basis of neodymium (Nd) isotope analyses of past seawater extracted from pelagic sediments it has been suggested that the Miocene Indian Ocean Equatorial Jet (MIOJet) was established at this time, a strong westward setting current (Gourlan et al, 2008).…”

Section: Paleogene and Neogene Developmentmentioning

confidence: 99%

Palaeoceanographic Interpretation of a Seismic Profile From the Southern Mozambique Ridge, Southwestern Indian Ocean

Uenzelmann-Neben¹,

Watkeys²,

Kretzinger³

et al. 2011

South African Journal of Geology

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Seismic reflection data from the southern Mozambique Ridge, Southwestern Indian Ocean, show indications for a modification in the oceanic circulation system during the Neogene. Major reorganisations in the Indian Ocean circulation system accompanying the closure of the Indonesian Gateway led to the onset of current controlled sedimentation in the vicinity of the Mozambique Ridge at 14 Ma. The modifications in water mass properties and path are documented in changes in reflection characteristics in the Mozambique Ridge area. Correlating these with identified changes of the Nd isotope evolution in deep water masses the general present day large scale circulation in the southern Indian Ocean is suggested to have prevailed for the last 9 Ma. References should not be included in abstracts.SOUTH AFRICAN JOURNAL OF GEOLOGY, 2011, VOLUME 114. (Smith and Sandwell, 1997;Uenzelmann-Neben, 2005;Jokat, 2006 Lutjeharms, 1996).The Agulhas Current is the western boundary current of the Indian Ocean It extends to water depths greater than 2000 m and has a mean transport of 108 m 3 /s (Lutjeharms, 1996; De Ruijter et al., 1999). Southwest of Africa the Agulhas Current turns abruptly eastward in a tight retroflection loop and becomes known as the Agulhas Return Current. This current flows eastwards to the Agulhas Plateau where it forms a major northward loop around the plateau (Lutjeharms, 1996; De Ruijter et al., 1999). Data Acquisition and AnalysisThis study is based on seismic reflection data gathered at the southern Mozambique Ridge (Figure 1a) (Uenzelmann-Neben, 2005). The seismic reflection data were collected using a three GI-gun cluster as source and a 2.4 km long digital streamer system with 180 channels to record the data. A sample rate of 1 ms guaranteed a theoretical vertical resolution of 4 m. (Lutjeharms, 2006). SF= secondary faults.

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Section: Paleogene and Neogene Developmentmentioning

confidence: 99%

Palaeoceanographic Interpretation of a Seismic Profile From the Southern Mozambique Ridge, Southwestern Indian Ocean

Uenzelmann-Neben¹,

Watkeys²,

Kretzinger³

et al. 2011

South African Journal of Geology

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“…3). The depth values assigned to these passages are shallower than those of the present-day passages (Kuhnt et al, 2004). Based on an educated guess the depths of the two eastern passages were set to 800 m, shallower than that of the present-day eastern Lifamatola (~1940 m) and Timor (~1300-1450 m) passages (Gordon et al, 2003).…”

Section: South East Asian Gatewaymentioning

confidence: 99%

“…This is probably too shallow, since in the Middle Miocene the Indonesian gateway was likely open for both surface and intermediate water (Kuhnt et al, 2004). Deep water passages were therefore added to the MMCO global topography/bathymetry dataset, based on the postulated Middle Miocene ocean paths across the Indonesian archipelago described in Kuhnt et al (2004) (Fig.…”

Section: South East Asian Gatewaymentioning

confidence: 99%

Boundary conditions for the Middle Miocene Climate Transition (MMCT v1.0)

Frigola¹,

Prange²,

Schulz³

2017

Preprint

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“…At the time of arrival of Camphorosmeae in Australia (sometime during the Middle to Late Miocene; Kadereit et al 2005, Kadereit & Freitag 2011) the continent had already separated from the remainder of the landmasses of the Southern Hemisphere (Kuhnt et al 2004;McLoughlin 2001;Stagg & Willcox 1992;Veevers 1986Veevers , 2000. This suggests that ancestors of the group must have arrived in Australia via long-distance dispersal, likely from temperate semi-arid to arid parts of continental Eurasia, the region where the closest relatives are widespread today.…”

Section: Arrival Of Camphorosmeae In Australiamentioning

confidence: 99%

Biogeography of Camphorosmeae (Chenopodiaceae): tracking the Tertiary history of Australian aridification

Cabrera¹

2011

Telopea

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Camphorosmeae (Chenopodiaceae, formerly Sclerolaeneae) are widespread across all states of Australia. Molecular data revealed that the Australian Camphorosmeae represent a monophyletic lineage comprising 147 currently recognised species, 145 of which are endemic to Australia. Like their Eurasian relatives most Australian Camphorosmeae are well-adapted to dry and saline environments, and most species are distributed in semi-arid or arid landscapes of the Eremaean area of central and western Australia. The historical biogeography of the Australian Camphorosmeae is analysed using an ETS phylogeny of the group and DIVA. We found that diversification of the tribe started at the end of the Miocene, and that radiation took place during the Pliocene, probably driven by the aridification of Australia during this time. Southern west Australia probably served as the ancestral area, and we hypothesise that the ancestors of Australian Camphorosmeae were already adapted to dry and saline conditions and might have been distributed in coastal or saline inland habitats. Successful dispersal and establishment of Camphorosmeae in the then newly developed arid regions was probably enhanced by niche pre-emption. Our timing of the radiation of this drought-adapted lineage and the directions of its dispersal support the hypothesis that the aridification of Australia started during the Late Miocene and arid areas expanded during the Pliocene from the west to the east and then north.

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Neogene history of the Indonesian Throughflow

Cited by 136 publications

References 95 publications

Palaeoceanographic Interpretation of a Seismic Profile From the Southern Mozambique Ridge, Southwestern Indian Ocean

Palaeoceanographic Interpretation of a Seismic Profile From the Southern Mozambique Ridge, Southwestern Indian Ocean

Boundary conditions for the Middle Miocene Climate Transition (MMCT v1.0)

Biogeography of Camphorosmeae (Chenopodiaceae): tracking the Tertiary history of Australian aridification

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