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**Photograph 3: Geological Analysis** The photograph shows a section of a hillside with distinct sedimentary layers. Key features include: - **Tan Beds:** These are composed of sandstone and exhibit few sedimentary structures. Noticeable erosion is visible at the bases of many of these beds. - **Darker Thin Beds:** These are made up of mudstone. - **Debris Area:** Marked with dashed lines in the image, labeled as "Debris to ignore," indicating loose material that is not part of the main sedimentary analysis. - **Color Variation:** A section marked "Color blackened by fire" shows an area affected by burning, which has altered the color of the rock surface. The photograph allows for a detailed observation of sedimentary structures, with labels provided by prior students. A higher resolution version is available for a closer inspection [here](#). Understanding these features is crucial for geological studies, offering insights into past environmental conditions and sediment deposition processes. **Description of Photograph 3 Facies:** - **Ratio of sandstone to shale:** - **Average thickness of sandstone beds:** - **Any additional observations:** ### Detailed Explanation of the Diagram: The image shows a rock face with visible layers of sedimentary rock. The area of interest is marked by dashed lines, indicating the main section for analysis. A scale is provided in the form of a horizontal line labeled "~1 m" to give an idea of the size and distance within the photograph. The dashed box indicates the area to focus on, while adjacent debris areas are labeled “Debris to ignore.” This suggests that only the rock layers within the box are relevant for the study of facies in this context.

**Photograph 3: Geological Analysis** The photograph shows a section of a hillside with distinct sedimentary layers. Key features include: - **Tan Beds:** These are composed of sandstone and exhibit few sedimentary structures. Noticeable erosion is visible at the bases of many of these beds. - **Darker Thin Beds:** These are made up of mudstone. - **Debris Area:** Marked with dashed lines in the image, labeled as "Debris to ignore," indicating loose material that is not part of the main sedimentary analysis. - **Color Variation:** A section marked "Color blackened by fire" shows an area affected by burning, which has altered the color of the rock surface. The photograph allows for a detailed observation of sedimentary structures, with labels provided by prior students. A higher resolution version is available for a closer inspection [here](#). Understanding these features is crucial for geological studies, offering insights into past environmental conditions and sediment deposition processes. **Description of Photograph 3 Facies:** - **Ratio of sandstone to shale:** - **Average thickness of sandstone beds:** - **Any additional observations:** ### Detailed Explanation of the Diagram: The image shows a rock face with visible layers of sedimentary rock. The area of interest is marked by dashed lines, indicating the main section for analysis. A scale is provided in the form of a horizontal line labeled "~1 m" to give an idea of the size and distance within the photograph. The dashed box indicates the area to focus on, while adjacent debris areas are labeled “Debris to ignore.” This suggests that only the rock layers within the box are relevant for the study of facies in this context.

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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Define one facies for the
sequence of turbidites in Photograph 3 based on the relative abundance (ratio) of sandstone and
mudstone as well as the thicknesses of sandstone beds (

**Photograph 3: Geological Analysis** The photograph shows a section of a hillside with distinct sedimentary layers. Key features include: - **Tan Beds:** These are composed of sandstone and exhibit few sedimentary structures. Noticeable erosion is visible at the bases of many of these beds. - **Darker Thin Beds:** These are made up of mudstone. - **Debris Area:** Marked with dashed lines in the image, labeled as "Debris to ignore," indicating loose material that is not part of the main sedimentary analysis. - **Color Variation:** A section marked "Color blackened by fire" shows an area affected by burning, which has altered the color of the rock surface. The photograph allows for a detailed observation of sedimentary structures, with labels provided by prior students. A higher resolution version is available for a closer inspection [here](#). Understanding these features is crucial for geological studies, offering insights into past environmental conditions and sediment deposition processes.
Transcribed Image Text:**Photograph 3: Geological Analysis** The photograph shows a section of a hillside with distinct sedimentary layers. Key features include: - **Tan Beds:** These are composed of sandstone and exhibit few sedimentary structures. Noticeable erosion is visible at the bases of many of these beds. - **Darker Thin Beds:** These are made up of mudstone. - **Debris Area:** Marked with dashed lines in the image, labeled as "Debris to ignore," indicating loose material that is not part of the main sedimentary analysis. - **Color Variation:** A section marked "Color blackened by fire" shows an area affected by burning, which has altered the color of the rock surface. The photograph allows for a detailed observation of sedimentary structures, with labels provided by prior students. A higher resolution version is available for a closer inspection [here](#). Understanding these features is crucial for geological studies, offering insights into past environmental conditions and sediment deposition processes.
**Description of Photograph 3 Facies:** - **Ratio of sandstone to shale:** - **Average thickness of sandstone beds:** - **Any additional observations:** ### Detailed Explanation of the Diagram: The image shows a rock face with visible layers of sedimentary rock. The area of interest is marked by dashed lines, indicating the main section for analysis. A scale is provided in the form of a horizontal line labeled "~1 m" to give an idea of the size and distance within the photograph. The dashed box indicates the area to focus on, while adjacent debris areas are labeled “Debris to ignore.” This suggests that only the rock layers within the box are relevant for the study of facies in this context.
Transcribed Image Text:**Description of Photograph 3 Facies:** - **Ratio of sandstone to shale:** - **Average thickness of sandstone beds:** - **Any additional observations:** ### Detailed Explanation of the Diagram: The image shows a rock face with visible layers of sedimentary rock. The area of interest is marked by dashed lines, indicating the main section for analysis. A scale is provided in the form of a horizontal line labeled "~1 m" to give an idea of the size and distance within the photograph. The dashed box indicates the area to focus on, while adjacent debris areas are labeled “Debris to ignore.” This suggests that only the rock layers within the box are relevant for the study of facies in this context.
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