To identify the depositional environment of sedimentary rocks, you can look for features such as grain size (indicating energy levels), sorting (well-sorted vs. poorly sorted grains), sedimentary structures (like cross-bedding or ripple marks), fossil content (indicating biological activity), mineral composition (reflecting source materials), coloration (which can indicate oxidation or organic matter), and thickness or layering of sediment (suggesting changes in depositional conditions over time). These features collectively provide insights into the past environments, such as rivers, deserts, or marine settings, where the sediments were deposited.
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