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本研究项目包括澳大利亚西北部皮尔巴拉太古宙地块的两处地方。一处为瓦拉武山峡(Warrawie Gap),在那里,库甘溪(Coongan Creek)切过出露于下瓦拉沃纳群的库甘同斜东侧。集块岩、一些酸性火山岩和一处保存完好的枕状熔岩块状部分均被钠质花岗岩—花岗闪长岩和粉红色长石石英二长岩等深成岩所侵入。这些岩体有在形成主要穹丘时(或以前)所生成的片理—褶皱幕F-_2。横切的细晶岩并未受F_2的影响。用λ~(87)Rb
This research project includes two places in the Pilbara Archean massif in northwestern Australia. One is the Warrawie Gap, where Coongan Creek cuts to the east of the Coquitlam in the Lower Wawanna. Aggregates, some acidic volcanic rocks and a well-preserved pillow-shaped lava block are intruded by plutonic rocks such as sodium granite-granodiorite and pink feldspathic-quartz monzonite. These rock masses have a cleat-pleat screen F-_2 formed during (or prior to) formation of the main dome. Transversal progranites are not affected by F_2. Λ ~ (87) Rb