Publications des scientifiques de l'IRD

Fersi W., Bassinot F., Lezine Anne-Marie. (2016). Past productivity variations and organic carbon burial in the Gulf of Aden since the last glacial maximum. Quaternaire, 27 (3), p. 213-226. ISSN 1142-2904.

Titre du document
Past productivity variations and organic carbon burial in the Gulf of Aden since the last glacial maximum
Année de publication
2016
Type de document
Article référencé dans le Web of Science WOS:000388370700003
Auteurs
Fersi W., Bassinot F., Lezine Anne-Marie
Source
Quaternaire, 2016, 27 (3), p. 213-226 ISSN 1142-2904
We reconstructed the evolution of marine primary productivity across the last deglaciation in the Gulf of Aden based on micro-paleontological and sedimentological data from marine core MD92-1002. Dinoflagellate cysts analysis suggests that the glacial period was characterized by weakened upwellings and well ventilated bottom water. Primary productivity increased from 14.5 ka with a maximum between 12.6 and 10.8 ka, then declined during the Holocene. Maximum of primary productivity in the Gulf of Aden took place about 3 ka earlier than the maximum of upwelling intensity off the Oman margin, and was not phase-locked with the maximum of boreal summer insolation. XRF-derived bromine contents mimic the variations of Total Organic Carbon (TOC) in core MD92-1002. Both records show a strong glacial/interglacial signal that is largely decoupled from our reconstruction of surface productivity, suggesting that total organic content in core MD92-1002 is mainly controlled by preservation at the sea floor.
Plan de classement
Sciences du milieu [021] ; Ecologie, systèmes aquatiques [036] ; Géologie et formations superficielles [064]
Description Géographique
ADEN GOLFE ; OMAN
Localisation
Fonds IRD
Identifiant IRD
PAR00015364
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