The Shancaoyu Formation is dominated by biotite- oligoclase granulitite,whose protolith is argillo-arenaceous sedimentary rocks containing small amounts of intermediate-acid volcanic rocks,with a zircon U-Pb concordia upper intercept age of 2498 Ma.
英
美
- 山草峪組以黑云更長(cháng)變粒巖為主,其原巖為含少量中酸性火山巖成分的泥、砂質(zhì)沉積巖,測得鋯石 U-Pb一致曲線(xiàn)上交點(diǎn)年齡為2498Ma;
