Fig 2. Pedostraigraphy, magnetic susceptibility and OSL ages versus depth for the loess sections at Yaoxian (a), Jingchuan (b) and Huanxian (c) since the last glacial.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.