A geologic maps shows the ages and kinds of rock that form the surface of the land. The team uses geologic maps to find rocks that formed during the dinosaur era. Geologists have mapped each distinct rock layer and have given each layer a different color and letter symbol. The key on the geologic maps gives more information about the type of rock that composes each area. The team is interested in terrestrial rocks because those will be the ones that contain the fossil bones of the animals that lived on land.
Scientific reports describe scientific discoveries.
Before the team departed, they went to a library and found all the reports that described Niger, its geology, and its fossils. The team decided where to look by combing information from geographic maps, geologic maps, and scientific reports. Dinosaurs Background Information Luck plays only a small part in discovering fossils. The geographic maps shows you the location of the cities, roads, major sand dunes, and mountains. With this type of map you can also determine which areas are covered by sand or trees.