Figure 1
From: Diversity in early crustal evolution: 4100 Ma zircons in the Cathaysia Block of southern China

Geological sketch map showing the sampling location of the two ancient zircon grains.
(a) Southern China composed of the Yangtze and Cathaysia blocks and the Jiangnan orogen between them; (b) Longquan area, southwestern Zhejiang Province. This map image was made by the co-authors Jiang Yang and Xing Guangfu according to their geological survey work, using the software Mapgis and CorelDraw.