Base your answers to questions 48 through 50 on the rock columns below and on your knowledge of earth
science. the rock columns represent four widely separated locations, w, x, y, and z. numbers 1, 2, 3, and 4
represent fossils. the rock layers have not been overturned.

which rock layer formed from the deposition of land-derived sediments that had a uniform particle size of
about 0.01 cm in diameter?
(1) brown siltstone
(2) black shale
(3) gray conglomerate
(4) red sandstone