They were continental rift and passive continental margin basins formed as a result of the break-up of Gondwana and the spreading of Atlantic Ocean.
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西非海岸盆地群的形成和發(fā)育,與中生代以來(lái)大西洋裂開(kāi)和后期的持續擴張作用有關(guān),是岡瓦納大陸解體和大西洋擴張形成的大陸裂谷和被動(dòng)陸緣盆地。
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