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For "F" what type of general rock is it? - Sedimentary, igneous, metamorphic? - Specific rock name?

For "F" what type of general rock is it? - Sedimentary, igneous, metamorphic? - Specific rock name?

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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For "F" what type of general rock is it? - Sedimentary, igneous, metamorphic?

- Specific rock name? 

### Geological Cross-Section Diagram #### Diagram Overview The provided diagram is a geological cross-section from west (left side) to east (right side) displaying different rock units and geological features. The cross-section highlights several key geological phenomena such as contact metamorphism, unconformities, marker beds, and different stratigraphic units labeled from A to J. The scale indicates a horizontal distance of 800 meters and a vertical scale to a depth of 200 meters. #### Key Features 1. **Rock Units**: - Rock units are labeled A to J, with A being the deepest layer and J the closest to the surface. - These units are relatively parallel overall, indicating a general layer structure, but are disrupted by other geological phenomena. 2. **Contact Metamorphism**: - Illustrated by dotted lines, these zones show where molten rocks have intruded into preexisting rock layers, altering their mineralogy and structure. 3. **Unconformities**: - Represented by wavy lines, these surfaces indicate a gap in the geological record where erosion or other processes have removed rock layers or where a hiatus in deposition occurred. 4. **Marker Bed in Unit I**: - Displayed with a dot-dash line, indicating a distinctive layer within Unit I that is continuous over a wide area and serves as a reference point for geological mapping. 5. **Faults and Other Structural Features**: - Bold lines represent faults, which are fractures where there has been movement of rock layers. - The orientation and characteristics of these faults indicate the relative movement of the geological layers. #### Annotated Points - **Point H**: Indicates a particular structure or feature, possibly a fault or a notable change in rock type or condition. - **Point K**: Highlights a noteworthy geological boundary, such as an unconformity or significant lithological change. - **Point L**: Marks the transition zone for contact metamorphism, showing the interaction between intrusive and surrounding rocks. - **Point G**: Likely indicates a geological contact or a significant feature in the rock units. #### Stratigraphy and Structural Relationships - The stratigraphic units are clearly demarcated with lines depicting their boundaries. - The layering shows typical sedimentary sequences, possibly interrupted by igneous intrusions and structural deformations implied by dipping layers and discontinuities. - This section provides insights into the geological history, including sediment deposition, tectonic activities, and intrusive
Transcribed Image Text:### Geological Cross-Section Diagram #### Diagram Overview The provided diagram is a geological cross-section from west (left side) to east (right side) displaying different rock units and geological features. The cross-section highlights several key geological phenomena such as contact metamorphism, unconformities, marker beds, and different stratigraphic units labeled from A to J. The scale indicates a horizontal distance of 800 meters and a vertical scale to a depth of 200 meters. #### Key Features 1. **Rock Units**: - Rock units are labeled A to J, with A being the deepest layer and J the closest to the surface. - These units are relatively parallel overall, indicating a general layer structure, but are disrupted by other geological phenomena. 2. **Contact Metamorphism**: - Illustrated by dotted lines, these zones show where molten rocks have intruded into preexisting rock layers, altering their mineralogy and structure. 3. **Unconformities**: - Represented by wavy lines, these surfaces indicate a gap in the geological record where erosion or other processes have removed rock layers or where a hiatus in deposition occurred. 4. **Marker Bed in Unit I**: - Displayed with a dot-dash line, indicating a distinctive layer within Unit I that is continuous over a wide area and serves as a reference point for geological mapping. 5. **Faults and Other Structural Features**: - Bold lines represent faults, which are fractures where there has been movement of rock layers. - The orientation and characteristics of these faults indicate the relative movement of the geological layers. #### Annotated Points - **Point H**: Indicates a particular structure or feature, possibly a fault or a notable change in rock type or condition. - **Point K**: Highlights a noteworthy geological boundary, such as an unconformity or significant lithological change. - **Point L**: Marks the transition zone for contact metamorphism, showing the interaction between intrusive and surrounding rocks. - **Point G**: Likely indicates a geological contact or a significant feature in the rock units. #### Stratigraphy and Structural Relationships - The stratigraphic units are clearly demarcated with lines depicting their boundaries. - The layering shows typical sedimentary sequences, possibly interrupted by igneous intrusions and structural deformations implied by dipping layers and discontinuities. - This section provides insights into the geological history, including sediment deposition, tectonic activities, and intrusive
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