Friday Field PhotoScienceFriday Field Foto #62: Folded strata in the Canadian RockiesScienceFriday Field Foto #61: Hummocky cross stratificationScienceFriday Field Foto #60: Chunk of microbialite in mudstoneScienceFriday Field Foto #59: Patagonian deep-marine conglomerate depositsScienceFriday Field Foto #58: Geopuzzle - Interpret this!ScienceFriday Field Foto #57: Dish structuresScienceFriday Field Foto #56: Andean condorScienceFriday Field Foto #55: Antidunes!ScienceFriday Field Foto #54: Dust storm in west TexasScienceFriday Field Foto #53: Armored mud ballScienceFriday Field Foto #52: Permian Reef Trail, west TexasScienceFriday Field Foto #51: Patagonian windScienceFriday Field Foto #50: Swaley cross-stratified sandstoneScienceFriday Field Foto #49: Death Valley debris flow depositsScienceFriday Field Foto #48: Wall of plane- and ripple-laminated sandstoneScienceFriday Field Foto #47: Paleozoic glacial tilliteScienceFriday Field Foto #46: Crinoid fossilScienceFriday Field Foto #45: Glauconitic sandstoneScienceFriday Field Foto #44: Patterns in the beachScienceFriday Field Foto #43: Miocene Paine Massif, PatagoniaScienceFriday Field Foto #42: Destroyed Darwin Plaque in the AndesScienceFriday Field Foto #41: Armored mudball (eroded out)ScienceFriday Field Foto #40: Chert from the Franciscan subduction complexScienceFriday Field Foto #39: Prograding deltaic depositsMore Stories