LAUSR

Abstract Thick Cenozoic dolostone successions found on many isolated carbonate islands have commonly been attributed to “dolomitization events”, whereby time-restricted dolomitization processes repeatedly affected the original limestone successions. Any model invoked to explain dolomitization of these successions depends on accurate dating of the “events” because that may allow correlation with other processes such as sea level oscillations or climate change. The 87Sr/86Sr ratios available from island dolostones throughout the world, which have been used to date dolomitization under the premise that seawater mediated its formation, indicate that most of these island dolostones developed between the late Miocene and late Pleistocene (~10 to