2009
DOI: 10.1130/g25702a.1
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Monsoon-induced partial carbonate platform drowning (Maldives, Indian Ocean)

Abstract: Multibeam maps and high-resolution seismic images from the Maldives reveal that a late Miocene to early Pliocene partial drowning of the platform was linked to strong sea-bottom currents. In the upper Miocene to Holocene, currents shaped the drowned banks, the current moats along the bank edges, and the submarine dune fi elds. Bottom currents in the Maldives are driven by the monsoon. It is proposed that the onset and the intensifi cation of the monsoon during the Neogene provoked platform drowning through inj… Show more

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Cited by 101 publications
(143 citation statements)
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“…Flat-topped and atoll-shaped banks are interpreted to have drowned quickly, whereas mound-shaped banks are interpreted to have undergone sequential drowning under elevated nutrient fluxes (Betzler et al, 2009), similar to banks described by Zampetti et al (2004) offshore Malaysia. The drowned banks are elongated parallel to the extension of the Kardiva Channel, which is characterized by throughflow of monsoon-driven surface currents and globally driven bottom currents (Lüdmann et al, 2013).…”
Section: Neogene Sequences Of the Maldives: Middle Miocene To Pleistomentioning
confidence: 83%
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“…Flat-topped and atoll-shaped banks are interpreted to have drowned quickly, whereas mound-shaped banks are interpreted to have undergone sequential drowning under elevated nutrient fluxes (Betzler et al, 2009), similar to banks described by Zampetti et al (2004) offshore Malaysia. The drowned banks are elongated parallel to the extension of the Kardiva Channel, which is characterized by throughflow of monsoon-driven surface currents and globally driven bottom currents (Lüdmann et al, 2013).…”
Section: Neogene Sequences Of the Maldives: Middle Miocene To Pleistomentioning
confidence: 83%
“…On the Inner Sea side, stepped atoll slopes have the same dip angles but reach to water depths of only 150 m, where the gradient rapidly declines (Fürstenau et al, 2010). The Inner Sea is characterized by periplatform ooze deposition (Droxler et al, 1990;Malone et al, 1990), locally accumulated into sediment drift bodies (Betzler et al, 2009). …”
Section: Background Geological Setting Of the Maldivesmentioning
confidence: 99%
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“…Participants stressed the importance of the Indian Ocean in the planned new phase of drilling, the International Ocean Discovery Program (IODP, 2013(IODP, -2023 Evolution of the shallow carbonate environment. Prospective proposals will suggest deep and shallow drill sites in the Maldives Archipelago to better understanding the influence of the monsoon-generated current system and sea-level fluctuations on the Neogene development of the Maldives platform (Betzler et al, 2009). Another potential proposal will address the origin of modern atolls and drowned flat top banks that have developed since the Pliocene.…”
Section: Workhop Goalsmentioning
confidence: 99%