Fig. 1

Loess Plateau and its surrounding geographic elements. I. The Ordos stable block; II. the Longxi block; III. the Fenwei neotectonic rift. Sample areas a–d: Yulin, Suide, Ganquan and Chunhua.

Loess Plateau and its surrounding geographic elements. I. The Ordos stable block; II. the Longxi block; III. the Fenwei neotectonic rift. Sample areas a–d: Yulin, Suide, Ganquan and Chunhua.