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How to Identify Cross-Bed Orientation in Sedimentary Rocks

How can you identify cross-bed orientation in the field?

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Cross-bedding is a common feature of sedimentary rocks that can reveal the direction and strength of ancient currents. It occurs when layers of sediment are deposited at an angle to the horizontal, forming inclined or curved sets of beds. By identifying the orientation of cross-beds, you can infer the paleocurrent direction and the depositional environment of the rocks. In this article, you will learn how to recognize and measure cross-bed orientation in the field using simple tools and techniques.