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Genesis and composition of the Pleistocene Coralligene de plateau of the Cutro Terrace (Calabria, southern Italy)

机译:卡特罗阶地(意大利南部卡拉布里亚)的更新世Coralligene de高原的成因和组成

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摘要

Some mid-Pleistocene carbonate build-ups from the marine terrace of Cutro show the uncommon, biologically-induced change of substrate that is implied in the definition of coralligene de plateau: from coarse, biogenic sediment to the solid framework. The build-ups grew over a basal rhodolithic layer mostly composed of Sporolithon ptychoides which was stabilized and transformed into a hard substrate by the binding activity and overgrowth of non-geniculate Corallinales (calcareous red algae). The build-ups are dominated by Titanoderma pustulatum, whose role in biogenic construction was previously underestimated, in association with Mesophyllum spp. and locally with Lithophyllum stictaeforme. Intergenicula of Amphiroa cryptarthrodia are common.
机译:卡特罗海洋阶地的一些中更新世的碳酸盐堆积物显示了不常见的,生物诱发的底物变化,这是对珊瑚礁高原的定义所隐含的:从粗糙的生物成因沉积物到固体骨架。堆积物生长在主要由Sporolithon Ptychoides组成的基底红景天层上,该层通过非成体Corallinales(钙质红藻)的结合活性和过度生长而稳定并转化为硬质底物。堆积物由脓皮病菌(Tinotoderma pustulatum)主导,而其在生物基因构造中的作用先前被低估了,并与Mesophyllum spp有关。并在局部具石裂果。暗纹双歧杆菌属的种间很常见。

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