نهر الزرقاء
Geologically, the Zarqa River is about 30 million years old. It is well known for its amber deposits that date back to the Hauterivian era of the Early Cretaceous (135 m.y.). A remarkable flora and fauna was reported from this amber reflecting tropical paleoenvironmental conditions prevailing during the time of resin deposition (Kaddumi, 2005; 2007).