Fig. 1.
Map of Saudi Arabia with geomorphological characters. Riyadh is located in the platform, surrounded by areas of sand dune. Area indicated by dots represents area of field survey.
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.