55. FOSSILS GIVE US INFORMATION ABOUT THE ANCIENT ENVIRONMENT AND CLIMATE
56.
57.
58.
59. You can match the rock strata in one location with rock strata in more distant locations by Comparing , c o l o r texture composition sequence of layers
62. Which fossil would make the best index fossil? Found in only 1 layer (short lived) Found in all samples (widespread)
63. Another way of correlating layers by time is through ___________________ Volcanic ash falls
64. These ash falls are very ________ events. A single layer of ______ can be found over a large area, this allows geologists to make a__________________ from one location to another at the position of a common ash fall. brief ash time correlation