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- W4382874518 abstract "<strong class=journal-contentHeaderColor>Abstract.</strong> Climatic and associated hydrological changes controlled the transport processes and composition of the sediments in the central Red Sea during the last ca. 200 kyr. Three different source areas for mineral dust are identified. The dominant source is located in the eastern Sahara (Sudan and southernmost Egypt). We identify its imprint on Red Sea sediments by high smectite and Ti contents, high <sup>87</sup>Sr/<sup>86</sup>Sr and low ε<sub>Nd</sub>. The availability of deflatable sediments was controlled by the intensity of tropical rainfall and vegetation cover over northern Africa linked to the African monsoon. Intense dust input to the Red Sea occurred during arid phases, low input during humid phases. A second, less significant source indicated by palygorskite input is probably located on the eastern Arabian Peninsula and/or Mesopotamia, while the presence of kaolinite suggests an additional minor dust source in northern Egypt. Our grain size data reflect episodes of fluvial sediment discharge to the central Red Sea and document the variable strength in response to all of the precession-paced insolation maxima during our study interval including both those that were strong enough to trigger sapropel formation in the eastern Mediterranean Sea and those that were not. The African Humid Period most strongly expressed in our Red Sea record was the one during the Eemian last interglacial at ca. 125 ka, followed by those at 198 ka, 108 ka, 84 ka and 6 ka." @default.
- W4382874518 created "2023-07-02" @default.
- W4382874518 date "2023-07-02" @default.
- W4382874518 modified "2023-09-29" @default.
- W4382874518 title "Comment on cp-2023-33" @default.
- W4382874518 doi "https://doi.org/10.5194/cp-2023-33-rc1" @default.
- W4382874518 hasPublicationYear "2023" @default.
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