PROCEEDINGS, INDONESIA PETROLEUM ASSOCIATION Thirty-Fifth Annual Convention & Exhibition, May 2011 A DOMINANT AUTOCYCLIC SIGNAL ON SUPERGREENHOUSE CARBONATES

The nature of carbonate cycles and their stacking patterns have been interpreted to be related with global climate conditions through geologic history. Carbonate cycles formed during icehouse times (e.g., late Devonian - early Permian and Neogene) are laterally variable due to allocyclic controls in response to high amplitude, high frequency (fifth- and fourth-order) sea-level fluctuations superposed on lower amplitude, low frequency (third-order) eustatic sea-level changes. Whereas cycles formed during greenhouse times (e.g., Mesoproterozoic, Ordovician-early Devonian and late Permian-early Tertiary) are commonly more laterally continuous due to the domination of lower frequency (third- order) eustatic sea-level fluctuations.