Featured field photos

 Mudcracks in clay-rich siltstone of the 990 million-year-old Jacobsville Formation

Spheroidal weathering in 1110 million-year-old mafic sills of the Umkondo large igneous province, Botswana

Unconformity between Cenozoic carbonates and Neoproterozoic crystalline rocks in southern Oman

3D exposure of pillow lavas in the Wadi Ghadir ophiolite of Egypt