Granites and GreenstonesArticle | Updated 8 years ago Loading skips ready for ascent to surface at Perseverance Gold Mine, 1907 In the Yilgarn Craton, great domes of granitic rocks are separated by belts of greenstone. Greenstones are sequences of sedimentary and volcanic oceanic rocks that have been heated, pressurised, and dissected by large fractures (or faults) which are many kilometres long and deep. ‹ The Yilgarn Salt Lakes and Ancient River Systems ›