一般特征太古宙绿岩带的沉积环境,被认为是局部的和区域性两种环境。绿岩带沉积物的大部分是碎屑岩,看来是由于崩塌和浊流活动而沉积在构造活动的盆地中。当沉积燧石、碳酸盐和石英岩时,可能有局部非常稳定的环境存在。尽管沉积盆地的深度不清楚,但多数盆地是深的,足以使浊积岩不至于受波浪活动的干扰和破坏。西澳大利亚皮尔巴拉省中35亿年的瓦拉沃纳群的沉积学研究,表明是广阔的浅水沉积环境,在该地区有大量 General characteristics The sedimentary environment of the Archean greenstone belt is considered as a partial and regional environment. Much of the greenstone sediments are clastic rocks that appear to have been deposited in tectonically active basins as a result of collapsing and turbidity activity. When flint, carbonate and quartzite are deposited, there may be locally very stable environments. Although the depth of sedimentary basins is unclear, most of the basins are deep enough to keep the turbidites from disturbing and destroying the wave activity. Sedimentology studies of the 3.5 billion-year-old Walawona complex in the Pilbara province of Western Australia show a vast shallow-water depositional environment with large