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Dating Rocks

by Anonymous

Use half-lives to find absolute ages, rock layers and cross-cutting relationships to compare relative ages, and index fossils to identify geologic periods.

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About this app

How Old Is This Rock is an interactive geology learning app covering absolute dating, relative dating, and geological eras. Explore half-life with Carbon-14, Potassium-40, and Uranium-238, infer rock order from layers and intrusions, and identify eras using index fossils. Mission-based activities guide learners through each concept with adjustable diagrams and explanations.

Use cases

  • High school students studying Earth science
  • Teachers demonstrating rock-dating principles
  • Learners practicing half-life calculations
  • Classes reviewing relative age and unconformities
  • Students identifying geological eras from fossils

Features

  • Interactive half-life models with adjustable isotope and remaining parent material
  • Absolute-age examples using Carbon-14, Potassium-40, and Uranium-238
  • Layer and intrusion controls for determining relative age
  • Unconformity toggle showing missing geological time
  • Geological-era timeline with representative index fossils
  • Guided missions with reset and next controls