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永梅坳陷为我国华南海西—印支期发育起来的四个断裂坳陷带之一。其走向为北东—南西,长约三百公里,宽约一百八十公里,面积约五万四千平方公里,由福建省的永安县往西南延伸到广东省的梅县,故称永梅坳陷,任坳陷东侧外带分布有多处“马坑式”沉积—变质铁矿,内带则分布有沉积型铅锌矿,靠中心部有沉积锰矿。根据航磁资料,本区存在一系列北东向展布的基底断裂,它基本上控制了永梅坳陷的发生和发展。
The Yongmei Depression is one of four fault-depression zones developed in the Hercynian-Indosinian in South China. Its direction is North East - South West, about 300 kilometers long, about 180 kilometers wide, an area of about 54,000 square kilometers, from Yong’an County in Fujian Province to the southwest extends to Meixian in Guangdong Province, There are many “Ma-keng” sedimentary-metamorphic iron mines distributed in the outer belt on the east side of Ren Depression, and the deposit of lead-zinc deposits in the inner belt, and the manganese deposits on the central part. According to the aeromagnetic data, there are a series of basement faults distributed in the NE direction in this area, which basically controls the occurrence and development of the Yongmei Depression.