Abstract

he Paleocene–Eocene sedimentary complex is most widely developed among the sedimentary cover deposits of the Magellan Seamounts. It is composed of pelagic (nanoforaminiferal) and reef limestones, edaphogenic breccias and volcanoclastic rocks. The most widespread pelagic limestones form narrow (0.5–1.5 km) and extensive (up to 20 km) ribbon-like bodies that cover the upper parts of the slopes and the rim of the summit plateau. The maximum area of their distribution, which covers 315 km², is noted on the Fedorov Guyot. Pelagic limestones and edaphogenic breccias outcrop over large areas and have reciprocal facies transitions. The Oligocene hiatus in sedimentation has been established in the sections of the Cenozoic sedimentary cover deposits of the studied guyots.

中文翻译：

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麦哲伦海山（太平洋）古奥古特古近纪沉积岩的主要类型及其形成条件

摘要

在麦哲伦海山的沉积盖层沉积物中，古新世-始新世沉积复合体发展最为广泛。它由上层（纳米植物）和礁石的石灰岩，成岩角砾岩和火山碎屑岩组成。最广泛的中上层石灰岩形成狭窄的带状体（0.5-1.5 km）和广泛的带状体（长达20 km），覆盖了斜坡的上部和山顶高原的边缘。Fedorov Guyot记录了它们分布的最大区域，覆盖315 km ²。浮游石灰岩和成水角砾岩在大面积上露头，并具有相互的相变。沉积的渐新世裂隙已在研究的古新生代的新生代沉积盖层剖面中建立。