---
title: "SG3: Geologic Time Exploration (Georgia Science standard)"
code: SG3
cite_as: Georgia Standards of Excellence, Science, SG3
subject: science
grades:
  - high-school
language: en
canonical_url: https://georgiahomeroom.org/standards/code/SG3
md_url: https://georgiahomeroom.org/standards/code/SG3.md
alternate_language_url: https://georgiahomeroom.org/es/standards/code/SG3.md
source_url: https://case.georgiastandards.org/ims/case/v1p1/CFDocuments/27a08dc6-416e-11e7-ba71-02bd89fdd987
source_last_changed: 2025-05-29
data_built: 2026-09-18
publisher: Georgia Homeroom, a free public-interest project of Georgia Civic Data. Not affiliated with or endorsed by the Georgia Department of Education or any school district.
up: https://georgiahomeroom.org/standards/science/high-school.md
index: https://georgiahomeroom.org/standards/index.md
---

# SG3: Geologic Time Exploration

Obtain, evaluate, and communicate information to explore geologic time.

- Subject: Science
- Appears in: High School, https://georgiahomeroom.org/standards/science/high-school.md

## Expectations

- **SG3.a**: Analyze data to interpret sequences of events in Earth’s history. (Clarification statement: Include relative vs. absolute dating techniques, principles of stratigraphy (e.g. Superposition and cross-cutting relationships), radiometric dating, and the fossil record.)
- **SG3.b**: Construct an argument based on evidence about how catastrophic and long-term events have impacted the evolution of life on Earth, including mass extinctions (e.g., asteroid/comet impact, plate tectonics and climate change).
- **SG3.c**: Obtain, evaluate, and communicate information that documents important tectonic events and sea level/climatic changes in Georgia over geologic time. (Clarification statement: Include a description and origin of the Valley and Ridge, Piedmont, Blue Ridge Mountains, and the Coastal Plain physiographic provinces.)

## Georgia Milestones coverage

No Georgia Milestones blueprint cites this standard.

Source: Georgia Standards of Excellence, published by the Georgia Department of Education at case.georgiastandards.org.