希腊克里特岛中西部Apostoli组中新世晚期底栖有孔虫动物群的古环境意义

H. Drinia
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引用次数: 1

摘要

利用底栖有孔虫重建了晚中新世早期的Apostoli盆地(克里特岛,Rethymnon地区)的古环境和古生态。生物上重要的因素,如海水中的氧和营养成分,在古生态系统的演化中起了很大的作用。在Apostoli组沉积期间,沉积物逐渐加深。该组下部的沉积物为浅海环境,附近有植被。地层中部沉积物以中等氧合条件为特征,而上部沉积物以限制性环境为特征,有机质聚集,在胁迫条件下能够生存的动物机会性物种占主导地位,受到丰富的营养物质的青睐。
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Palaeoenvironmental significance of a late Miocene benthic foraminifera fauna from Apostoli Formation, Central West Crete, Greece
The palaeoenvironmental and palaeoecological reconstruction of the Apostoli Basin (Crete, Rethymnon Region) during early Late Miocene by means of benthic foraminifers is given. Biologically important factors, such as oxygen and nutrient content of sea-water, played a great role in the evolution of the palaeoecosystem. A gradual deepening took place during the deposition of the Apostoli Formation. The sediments of the lower part of the formation document a shallow-marine environment with vegetation in the neighborhood. In the middle part of the formation sediments are characterized by intermediate oxygenated conditions, whereas the upper part of it is characterized by the establishment of a restricted envrironment, where organic matter accumulates and infaunal opportunistic species capable of surviving in stressed conditions dominate, being favoured by abundant nutrients.
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