一个多世纪以来,尼日利亚比勒地槽业已成为一个经济得益相当实惠的地区,首先就在于其 Pb-Zn 矿产(图1)。在本区,尤其在爱伯卡利契周围一带的地槽南部,有二十个以上的矿床沿北东向长六百公里的轻微变形的白垩系沉积岩带分布。 For more than a century, the Bayer Basin in Nigeria has become an economically profitable area, first and foremost its Pb-Zn minerals (Figure 1). In this area, especially in the southern part of the trench, around Arbolice, more than 20 ore deposits are distributed along the slightly deformed Cretaceous sedimentary belt about 600 km north-east.