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戈德霍普东北约150公里处有一个为化岗片麻岩所包围的重褶向斜,该向斜主要由基性岩石组成,其中含有条带状铁质岩石和其它外地壳成因的岩石。这些片麻岩和含铁建造的变质程度良为上部绿片岩相到角闪岩相。外地壳岩石序列的总厚度为2—3公里,其下部为石英岩和变质杂砂岩,向上为石榴石-绿泥石片岩和含有氧化铁及碳酸盐的条带状含铁建造,顶部为绿片岩相的变基性岩类。D.布里奇沃特等人认
About 150 km northeast of Gold Hope, there is a fold-pleat syncline that is surrounded by granitic gneiss, consisting mainly of base rocks, including rocks of banded ferrous and other crustal origin . These gneisses and iron-containing constructions are well metamorphosed from upper greenschist facies to amphibolite facies. The total thickness of the crustal rocks in the outer crust ranges from 2 to 3 kilometers with quartzite and metamorphic miscellaneous sandstones in the lower part, garnet-chlorite schist and strip iron containing iron oxide and carbonate upwards with the top being Metamorphic rocks of the Greenschist facies. D. Bridgewater et al