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medium carbon black high frequency screen in Teheran Iran West Asia

Jan 02, 2019· A speleothem geochemical record from northernIrancaptures significant climate fluctuations during the mid-to-late Holocene athighresolution. Two abrupt shifts in Mg/Ca last for more than a century and are interpreted as enhanced dust activity, indicating a threshold behavior in response to aridity. Coincident gradual peaks in δ18O support the interpretation of regional drying.

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