To accurately determine the rock type based on weathering patterns, I would typically need to know more details about the specific characteristics of the weathering you observe, as different rocks weather in distinctive ways. However, I can provide some general guidance based on common weathering patterns associated with each type of rock:
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Granite (A): Weathering typically leads to the formation of clay minerals and quartz sand, often showing relatively large grains and a tendency to break along mineral lines.
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Sandstone (B): Tends to weather into smaller grains of sand; it can break down more uniformly across the surface, maintaining a sandy appearance.
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Limestone (C): Often weathers by dissolution, leading to features like sinkholes or rounded shapes, and may display more smooth surfaces due to chemical weathering.
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Shale (D): Weathering can cause it to split into thin layers or flakes; it may also lead to the development of soft, muddy textures.
If you are observing smooth, rounded surfaces and signs of dissolution, C. Limestone might be the correct answer. If you see layer separation and flaky textures, then D. Shale could be more appropriate. For a rugged texture with larger grains, it could be A. Granite or B. Sandstone.
Since I don’t have the specific weathering pattern you are referring to, I recommend using the descriptions above to match your observations with the characteristics of each rock type.