Conference proceeding
International Ocean Discovery Program Expedition 401 preliminary report; Mediterranean-Atlantic gateway exchange; 10 December, 2023-9 February, 2024
Preliminary Report - International Ocean Discovery Program, Vol.401
04/2024
DOI: 10.14379/iodp.pr.401.2024
Abstract
Marine gateways play a critical role in the exchange of water, heat, salt, and nutrients between oceans and seas. Changes in gateway geometry can significantly alter both the pattern of global ocean circulation and climate. Today, the volume of dense water supplied by Atlantic-Mediterranean exchange through the Gibraltar Strait is among the largest in the global ocean. For the past 5 My, this overflow has generated a saline plume at intermediate depths in the Atlantic that deposits distinctive contouritic sediments and contributes to the formation of North Atlantic Deep Water. This single gateway configuration only developed in the Early Pliocene. During the Miocene, two narrow corridors linked the Mediterranean and Atlantic: one in northern Morocco and the other in southern Spain. Formation of these corridors followed by progressive restriction and closure resulted in extreme salinity fluctuations in the Mediterranean, leading to the precipitation of the Messinian Salinity Crisis salt giant. International Ocean Discovery Program (IODP) Expedition 401 is the offshore drilling component of a Land-2-Sea drilling proposal, Investigating Miocene Mediterranean-Atlantic Gateway Exchange (IMMAGE). Its aim is to recover a complete record of Atlantic-Mediterranean exchange from its Late Miocene inception to its current configuration by targeting Miocene offshore sediments on either side of the Gibraltar Strait. Miocene cores from the two precursor connections now exposed on land will be obtained by future International Continental Scientific Drilling Program (ICDP) campaigns.
Details
- Title: Subtitle
- International Ocean Discovery Program Expedition 401 preliminary report; Mediterranean-Atlantic gateway exchange; 10 December, 2023-9 February, 2024
- Creators
- Rachel Flecker - University of BristolEmmanuelle Ducassou - Université de BordeauxTrevor Williams - Texas A&M UniversityUdara Amarathunga - Princeton UniversityBarbara Balestra - American UniversityMelissa Berke - University of Notre DameClara Blaettler - University of ChicagoShamar Chin - University of IowaMoumita Das - Banaras Hindu UniversityKosuke Egawa - Kyushu UniversityNatacha Fabregas - University of BergenSarah Feakins - University of Southern CaliforniaSimon George - Macquarie UniversityF. Javier Herandez-Molina - Royal Holloway University of LondonWout Krijgsman - Utrecht UniversityZhiyang Li - Texas A&M International UniversityLiu Jiabo - China University of GeosciencesDanielle Noto - Louisiana State UniversityFadl Raad - Universita di Corsica Pasquale Paoli FRA FranceFrancisco Javier Rodriguez-Tovar - Universidad de GranadaFrancisco Javier Sierro - Universidad de SalamancaPatricia Standring - The University of Texas at AustinJonathan Stine - University of MinnesotaErika Tanaka - Kōchi UniversityManuel Teixeira - University of LisbonXunhui Xu - Kyoto UniversityYin Shaoru - Second Institute of OceanographyMohamed Zakaria Yousfi - Office National des Hydrocarbures et des Mines MAR MoroccoInternational Ocean Discovery Program, Expedition 401 Scientists
- Resource Type
- Conference proceeding
- Publication Details
- Preliminary Report - International Ocean Discovery Program, Vol.401
- DOI
- 10.14379/iodp.pr.401.2024
- eISSN
- 2372-9562
- Publisher
- International Ocean Discovery Program
- Number of pages
- 54
- Language
- English
- Date published
- 04/2024
- Academic Unit
- Earth and Environmental Sciences
- Record Identifier
- 9984628216302771
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