早期海底的火山活動所造成的熔岩碎塊、集塊岩逐漸於
海底形成地層,稱為海底沉積物。它們的主要成分是陸源物質,如泥沙、泥岩、花崗岩、頁岩以及植物骨頭。海底沉積物也可能包含有有機材料,如大量的微生物遺骸、動物遺骸以及原始生命形式的化石。
Early volcanic activity at the sea floor created layers of lava fragments and clastic rocks that gradually formed the seabed, known as seafloor sediment. Their main components are terrigenous materials, such as silt, mudstone, granite, shale and plant bones. Seafloor sediments may also contain organic materials such as a large amount of microbial remains, animal remains and fossils of primitive life forms.
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