Evolution of North Malé Atoll Rim during the Last Full Glacial Cycle (Malé Island, Republic of Maldives)

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dc.contributor.advisorDroxler, André W
dc.contributor.committeeMemberSawyer, Dale S
dc.contributor.committeeMemberNittrouer, Jeffrey A
dc.contributor.committeeMemberGischler, Eberhard
dc.creatorKoksal, Tugba
dc.date.accessioned2016-02-05T22:28:14Z
dc.date.available2016-02-05T22:28:14Z
dc.date.created2014-12
dc.date.issued2014-07-31
dc.date.submittedDecember 2014
dc.date.updated2016-02-05T22:28:15Z
dc.description.abstractMy study focuses on the evolution of Malé Island to elucidate the late Pleistocene-Holocene evolution of the discontinuous North Malé Atoll rim. Sample analyses from two boreholes, published information from additional boreholes, and a multi-beam bathymetric map for Malé Island deep surroundings, are available for this study. Facies analyses of the lower sedimentary unit reveal an overall deepening coralgal reef that accumulated probably during the previous interglacial and subsequently was altered by meteoric diagenesis during a 100 ky-long exposure. The upper Holocene unconsolidated coralgal reef, overlying the karstified coralgal MIS 5e lower unit, was initiated at ~8200 kyr BP and vertically grew 25 m high until 6510 kyr BP, protected behind a karstified late Pleistocene reef. A small, though 30-35 m deep, newly formed lagoon started to fill up only at ~5500 kyr BP, when a reef initiated on top of the highest elevated Pleistocene karstified reef and sea level rise stalled.
dc.format.mimetypeapplication/pdf
dc.identifier.citationKoksal, Tugba. "Evolution of North Malé Atoll Rim during the Last Full Glacial Cycle (Malé Island, Republic of Maldives)." (2014) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/88444">https://hdl.handle.net/1911/88444</a>.
dc.identifier.urihttps://hdl.handle.net/1911/88444
dc.language.isoeng
dc.rightsCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.
dc.subjectMale Island
dc.subjectNorth Male Atoll
dc.subjectLate Quaternary atoll rim evolution
dc.subjectStacked interglacial coralgal accumulations
dc.subjectDiagenesis and karstification
dc.subjectFacies and Foraminifer Time Variation
dc.titleEvolution of North Malé Atoll Rim during the Last Full Glacial Cycle (Malé Island, Republic of Maldives)
dc.typeThesis
dc.type.materialText
thesis.degree.departmentEarth Science
thesis.degree.disciplineNatural Sciences
thesis.degree.grantorRice University
thesis.degree.levelMasters
thesis.degree.majorCarbonate Sedimentology
thesis.degree.nameMaster of Science
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