Fig. 4From: Neogene molluscs, shallow marine paleoenvironments, and chronostratigraphy of the Guajira Peninsula, ColombiaOutcrop photographs of a soft intercalated sandstone of the Uitpa Formation at Arroyo Uitpa (STRI 290410) and b cemented shelly sandstone of the Jimol Formation near Siapana (STRI 290817)Back to article page