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2. Relative dating As we did in Lecture 7, work out the sequence of events that occurred to create the geological cross- section below. (A "sill" is a horizontal intrusive igneous feature which forms between horizontal sedimentary rocks. A "granite pluton" is a large area of intrusive igneous rock within the crust. A "dike" is a vertical intrusive igneous feature.) 3 5 Sill Shale Sandstone Limestone Land surface 6 5 6 Sandstone 5 3. Granite pluton Fault Basalt dike 1. Sedimentary rock units 1-7 are deposited in horizontal layers 2. Igneous sill intrudes between rock units 4 and 5. 3. 4. 5. 6. 7. 3. Absolute dating A rock is collected from the granite pluton for absolute dating. It contains 40K which has a half-life of 1.25 x 10 years. If 25% of the original 40K remains today, how old is the rock in billions of years?

2. Relative dating As we did in Lecture 7, work out the sequence of events that occurred to create the geological cross- section below. (A "sill" is a horizontal intrusive igneous feature which forms between horizontal sedimentary rocks. A "granite pluton" is a large area of intrusive igneous rock within the crust. A "dike" is a vertical intrusive igneous feature.) 3 5 Sill Shale Sandstone Limestone Land surface 6 5 6 Sandstone 5 3. Granite pluton Fault Basalt dike 1. Sedimentary rock units 1-7 are deposited in horizontal layers 2. Igneous sill intrudes between rock units 4 and 5. 3. 4. 5. 6. 7. 3. Absolute dating A rock is collected from the granite pluton for absolute dating. It contains 40K which has a half-life of 1.25 x 10 years. If 25% of the original 40K remains today, how old is the rock in billions of years?

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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2. Relative dating As we did in Lecture 7, work out the sequence of events that occurred to create the geological cross- section below. (A "sill" is a horizontal intrusive igneous feature which forms between horizontal sedimentary rocks. A "granite pluton" is a large area of intrusive igneous rock within the crust. A "dike" is a vertical intrusive igneous feature.) 3 5 Sill Shale Sandstone Limestone Land surface 6 5 6 Sandstone 5 3. Granite pluton Fault Basalt dike 1. Sedimentary rock units 1-7 are deposited in horizontal layers 2. Igneous sill intrudes between rock units 4 and 5. 3. 4. 5. 6. 7. 3. Absolute dating A rock is collected from the granite pluton for absolute dating. It contains 40K which has a half-life of 1.25 x 10 years. If 25% of the original 40K remains today, how old is the rock in billions of years?
Transcribed Image Text:2. Relative dating As we did in Lecture 7, work out the sequence of events that occurred to create the geological cross- section below. (A "sill" is a horizontal intrusive igneous feature which forms between horizontal sedimentary rocks. A "granite pluton" is a large area of intrusive igneous rock within the crust. A "dike" is a vertical intrusive igneous feature.) 3 5 Sill Shale Sandstone Limestone Land surface 6 5 6 Sandstone 5 3. Granite pluton Fault Basalt dike 1. Sedimentary rock units 1-7 are deposited in horizontal layers 2. Igneous sill intrudes between rock units 4 and 5. 3. 4. 5. 6. 7. 3. Absolute dating A rock is collected from the granite pluton for absolute dating. It contains 40K which has a half-life of 1.25 x 10 years. If 25% of the original 40K remains today, how old is the rock in billions of years?
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