After ~6 ka BP, δD fi shows an increasing trend, with an average value of ~9.46 ‰ (Fig. 2a ).
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Holocene climate change in southern Oman deciphered by speleothem records and climate model simulations.
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Q5 δ 13 C values range from -6.4‰ to 1.1‰, with relatively stable values (~ −1‰) from ~10.8 to 6 ka BP and a decreasing trend from~−1‰ to ~−5‰ since ~6 ka BP (Fig. 2 ), suggesting slightly lower P-E (or effective wetness) in the early and middle Holocene compared to the late Holocene.