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尤莱等人曾建立了 CO_3~=—H_2O(l.)的古海洋地质温标。麦克利曾对该温标作了精确的推算,并在恒温槽中用海水沉淀无机碳酸盐的方法加以验证。尤莱等人曾指出也许可能建立一种类似的、基于 O~(18)与 O~(16)交换的 PO_4~■—H_2O(l.)古海洋地质温标。它的交换反应如下,
Youle et al. Have established ancient marine geothermometers CO_3 ~ = -H_2O (l.). McClough had made accurate projections of the temperature scale and verified it by means of seawater precipitation of inorganic carbonates in a thermostat. Youle et al. Have pointed out that it may be possible to establish a similar paleo-oceanic geothermic temperature scale based on O ~ (18) and O ~ (16) exchange. Its exchange reaction is as follows,