Composition and stable isotope record of bulk sediment and belemnite rostra from ODP Hole 122-761C, supplement to: Bralower, Timothy J (1992): Stable isotopic, assemblage, and paleoenvironmental investigations of juvenil-ocean sediments recovered on Leg 122, Wombat Plateau, Northwest Australia. In: von Rad, U; Haq, BU; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 122, 569-585

Timothy J Bralower
A sedimentary sequence documenting the early history of the proto-Indian Ocean was drilled at Site 761 on the Wombat Plateau, northwest Australia. Directly above the post-rift unconformity, two lithologic units were recovered which reflect deposition in incipient oceanic environments. The lower unit, composed of sandstone, contains abundant belemnites and a few lenses composed of low-diversity coccolith assemblages. The second unit, composed of chalk, contains abundant calcispheres, thoracospheres, low-diversity coccolith assemblages, and a few radiolarians. Belemnites...
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