1 a. Describe the tectonic setting for the following by filling in the columns below, using the figures in the lab book as a reference 1b. Why is oceanic crust subducted beneath continental crust instead of the other way around? 1c. Sketch California and the San Andreas Fault in the space below and put arrows alongopposite sides of the fault to show the relative sense of movement. Is Los Angeles moving toward or away from Berkeley? Is the motion right-lateral or left-lateral?

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
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1 a. Describe the tectonic setting for the following by filling in the columns below, using the
figures in the lab book as a reference

1b. Why is oceanic crust subducted beneath continental crust instead of the other way around?


1c. Sketch California and the San Andreas Fault in the space below and put arrows alongopposite sides of the fault to show the relative sense of movement. Is Los Angeles moving
toward or away from Berkeley? Is the motion right-lateral or left-lateral? 

**Figure 2.1 Earth's major lithospheric plates.**

This map shows the major lithospheric plates on Earth, including:

- **North American Plate:** Covers North America and parts of the Atlantic Ocean.
- **South American Plate:** Encompasses South America and extends into the Atlantic Ocean.
- **Eurasian Plate:** Includes Europe and Asia.
- **African Plate:** Covers the continent of Africa.
- **Antarctic Plate:** Encompasses Antarctica.
- **Pacific Plate:** The largest plate, covering much of the Pacific Ocean.
- **Australian-Indian Plate:** Covers Australia and the Indian Ocean region.

Other noted plates include:
- **Philippine Plate**
- **Arabian Plate**
- **Nazca Plate**
- **Cocos Plate**
- **Scotia Plate**
- **Juan de Fuca Plate**
- **Caribbean Plate**

Key geological features:
- **Mid-Atlantic Ridge:** A divergent boundary in the Atlantic Ocean.
- **East Pacific Rise:** A divergent boundary in the Pacific Ocean.
- **Chilean Ridge, Galapagos Ridge, Southeast Indian Ridge, and Southwest Indian Ridge:** Additional ocean ridges.

**Block Diagrams:**
1. **A. Convergent Plate Boundary:** 
   - Illustrates subduction zones where an oceanic plate is forced beneath a continental lithosphere, forming a trench and resulting in volcanic activity due to melting in the asthenosphere.
   
2. **B. Transform Plate Boundary:**
   - Shows the lateral sliding of plates against each other, characterized by earthquakes along faults.

3. **C. Divergent Plate Boundary:**
   - Depicts the formation of new oceanic crust at spreading centers, where two plates move apart, allowing magma to rise and solidify.

**Legend:**
- **Divergent Boundaries (Red line):** Plates move apart.
- **Convergent Boundaries (Blue):** Plates collide.
- **Transform Boundaries (Yellow):** Plates slide past each other.

*Note: Many smaller plates are not shown on this map.*
Transcribed Image Text:**Figure 2.1 Earth's major lithospheric plates.** This map shows the major lithospheric plates on Earth, including: - **North American Plate:** Covers North America and parts of the Atlantic Ocean. - **South American Plate:** Encompasses South America and extends into the Atlantic Ocean. - **Eurasian Plate:** Includes Europe and Asia. - **African Plate:** Covers the continent of Africa. - **Antarctic Plate:** Encompasses Antarctica. - **Pacific Plate:** The largest plate, covering much of the Pacific Ocean. - **Australian-Indian Plate:** Covers Australia and the Indian Ocean region. Other noted plates include: - **Philippine Plate** - **Arabian Plate** - **Nazca Plate** - **Cocos Plate** - **Scotia Plate** - **Juan de Fuca Plate** - **Caribbean Plate** Key geological features: - **Mid-Atlantic Ridge:** A divergent boundary in the Atlantic Ocean. - **East Pacific Rise:** A divergent boundary in the Pacific Ocean. - **Chilean Ridge, Galapagos Ridge, Southeast Indian Ridge, and Southwest Indian Ridge:** Additional ocean ridges. **Block Diagrams:** 1. **A. Convergent Plate Boundary:** - Illustrates subduction zones where an oceanic plate is forced beneath a continental lithosphere, forming a trench and resulting in volcanic activity due to melting in the asthenosphere. 2. **B. Transform Plate Boundary:** - Shows the lateral sliding of plates against each other, characterized by earthquakes along faults. 3. **C. Divergent Plate Boundary:** - Depicts the formation of new oceanic crust at spreading centers, where two plates move apart, allowing magma to rise and solidify. **Legend:** - **Divergent Boundaries (Red line):** Plates move apart. - **Convergent Boundaries (Blue):** Plates collide. - **Transform Boundaries (Yellow):** Plates slide past each other. *Note: Many smaller plates are not shown on this map.*
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