Exam 2 | GEOL 104 - PHYSICAL GEOLOGY, Quizzes of Geology

Download Exam 2 | GEOL 104 - PHYSICAL GEOLOGY and more Quizzes Geology in PDF only on Docsity! TERM 1 John Wesley Powell DEFINITION 1 Led expedition down Colorado River through Grand Canyon and realized the evidence for an ancient Earth is in its rocks TERM 2 Relative Dating DEFINITION 2 Rocks are placed in their proper sequence relative to the rocks above and below TERM 3 Nicolaus Steno DEFINITION 3 Law of superposition and Original Horizontality in Italy TERM 4 Law of superposition DEFINITION 4 Each bed is older than the one above and younger than the one below TERM 5 Original Horizontality DEFINITION 5 If beds remain horizontal, they have not been disturbed. TERM 6 Cross-Cutting Relationships DEFINITION 6 A fault must have occurred after the layers were originally deposited TERM 7 Inclusions DEFINITION 7 The bed adjacent to the one that contains the inclusions must have been there first in order to provide the fragments. TERM 8 Disconformity DEFINITION 8 An unconformity is a buried erosional or non-depositional surface separating two rock masses or strata of different ages, indicating that sediment deposition was not continuous. TERM 9 Nonconformity DEFINITION 9 A break that separates old rock from fairly young rock- caused by a period of uplift and erosion TERM 10 Angular Unconformity DEFINITION 10 An unconformity is a buried erosional or non-depositional surface separating two rock masses or strata of different ages, indicating that sediment deposition was not continuous.