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Declining carbonate percentages together with a marked decrease in carbonate accumulation rates after ~13.2\u00a0Ma signal the onset of a prolonged episode of reduced carbonate deposition. This extended phase, which lasted until ~8.7\u00a0Ma, coincides with the middle to late Miocene carbonate crash, originally identified in the eastern equatorial Pacific Ocean and the Caribbean Sea. Interocean comparison reveals that intense carbonate impoverishment at Site U1443 (~11.5 to ~10\u00a0Ma) coincides with prolonged episodes of reduced carbonate deposition in all major tropical ocean basins. This implies that global changes in the intensity of chemical weathering and riverine input of calcium and carbonate ions into the ocean reservoir were instrumental in driving the carbonate crash. An increase in U1443 Log (Ba\/Ti) together with a change in sediment color from red to green indicate a rise in organic export flux to the sea floor after ~11.2\u00a0Ma, which predates the global onset of the biogenic bloom. This early rise in export flux from biological production may have been linked to increased advection of nutrients and intensification of upper ocean mixing, associated with changes in the seasonality and intensity of the Indian Monsoon.<\/jats:p>","DOI":"10.1029\/2018pa003482","type":"journal-article","created":{"date-parts":[[2019,4,16]],"date-time":"2019-04-16T18:09:58Z","timestamp":1555438198000},"page":"813-832","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":57,"title":["The Middle to Late Miocene \u201cCarbonate Crash\u201d in the Equatorial Indian Ocean"],"prefix":"10.1029","volume":"34","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2075-7265","authenticated-orcid":false,"given":"Julia","family":"L\u00fcbbers","sequence":"first","affiliation":[{"name":"Institute of Geosciences Christian\u2010Albrechts\u2010University Kiel Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7567-9730","authenticated-orcid":false,"given":"Wolfgang","family":"Kuhnt","sequence":"additional","affiliation":[{"name":"Institute of Geosciences Christian\u2010Albrechts\u2010University Kiel Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3167-0862","authenticated-orcid":false,"given":"Ann E.","family":"Holbourn","sequence":"additional","affiliation":[{"name":"Institute of Geosciences Christian\u2010Albrechts\u2010University Kiel Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3078-1253","authenticated-orcid":false,"given":"Clara T.","family":"Bolton","sequence":"additional","affiliation":[{"name":"CNRS, IRD, Coll\u00e8ge de France, INRA, CEREGE Aix\u2010Marseille Universit\u00e9 Aix\u2010en\u2010Provence France"}]},{"given":"Emmeline","family":"Gray","sequence":"additional","affiliation":[{"name":"CNRS, IRD, Coll\u00e8ge de France, INRA, CEREGE Aix\u2010Marseille Universit\u00e9 Aix\u2010en\u2010Provence France"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2365-2485","authenticated-orcid":false,"given":"Yoichi","family":"Usui","sequence":"additional","affiliation":[{"name":"Department of Deep Earth Structure and Dynamics Research Japan Agency for Marine\u2010Earth Science and Technology Kanagawa Japan"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5339-1103","authenticated-orcid":false,"given":"Karlos G. 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