The oceanic plate is made of denser and heavier rock, so it begins to sink down under the continental plate and into the mantle.

海洋板块是由密度更大、更重的岩石构成的，所以它开始下沉到大陆板块之下，到地幔之中。

youdao

Basalt is one of the Earth's most common rock formations, making up 10 percent of the continental crusts.

而玄武岩是地球上最常见的岩层，形成了10%的大陆壳。

youdao

Continental Illinois in America and Johnson Matthey Bankers in Britain were rescued in 1984, because regulators judged that the Banks were large enough to rock the whole system should they go bust.

美国的Continental Illinois银行和英国的Johnson Matthey Bankers银行都在1984年被解救，因为规管者判断，这些银行已经足够大到，如果它们倒闭，将会撼动整个金融体系。

youdao

Mister Wegener said the lighter continental rock floated up through the heavier basalt rock of the ocean floor.

VOA: special.2010.01.12

They are made of continental rather than oceanic rock, and seem to be a small part of the jigsaw puzzle of continental drift rather than genuine oceanic islands.

ECONOMIST: Mass extinctions