Extended Data Fig. 10: Distribution of regional speleothem 234U/238Uinitial and U concentrations (ppb) and a histogram with the frequency of regional (234U/238U)initial. | Nature

Extended Data Fig. 10: Distribution of regional speleothem 234U/238Uinitial and U concentrations (ppb) and a histogram with the frequency of regional (234U/238U)initial.

From: Recurrent humid phases in Arabia over the past 8 million years

Extended Data Fig. 10: Distribution of regional speleothem 234U/238Uinitial and U concentrations (ppb) and a histogram with the frequency of regional (234U/238U)initial.The alternative text for this image may have been generated using AI.

Panel a shows sites from Mukalla9, Moomi142, Hoq140, Casecas140, Dimarshim139, Hoti139,143, Qunf139, Kahf Defore138,139, Jeita144, Qadisha145, Kannan146,147, Soreq148,149,150, Ma’ale-Deragot151, Ma’ale ha-Meishar152, Tzavoa151, Izzim152, Makhtesh-ha-Qatan152, Ashalim152, Even-Sid-Ramon152, Shizafon152, Ktora Cracks152, Hol-Zakh152, West Jerusalem153, Gecko52, and Suprise52. U concentration data for caves Hartuv Quarry150,154, Ma’ale-Efrayim65,155, Small Ma’ale-Efrayim65 Kana’im155, Cave 81155, Na’chal Ami’az155 is unavailable and therefore are not shown in the graph, but the (234U/238U)initial values are used in the calculation of the regional average (n = 1300). Panels b-d show the regional groundwater (234U/238U) for total groundwater (b), carbonate aquifers (c) and Wadis (d) in Saudi Arabia.

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