The Wenquan Group in the Yili Block was mostly derived from a local material source.
Synchronous crustal growth and reworking events occurred in the Yili Block at ca. 1.80–1.70 Ga and 1.60–1.30 Ga.
The Yili Block has a close tectonic affinity to the Chinese Central Tianshan Block in the Precambrian.
The Yili Block is unlikely to derive from the Siberian, the North China or the Tarim cratons in the Precambrian.