Miskell, K. J.; Brass, G. W.; Harrison, C. G. A. (1985): Global patterns in opal deposition from Late Cretaceous to late Miocene. American Association of Petroleum Geologists, Tulsa, OK, United States, AAPG Bulletin, 69 (6), 996-1012, georefid:1985-060642

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Data set link: http://sedis.iodp.org/pub-catalogue/index.php?id=1985-060642 (c.f. for more detailed metadata)
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