Definition

The study of layers of rock and soil, especially how they are formed, arranged, and their ages.

Example

Geologists use stratigraphy to understand the history of the Earth.

Conversation

Have you ever taken a course on stratigraphy?

No, I haven't, but it sounds interesting!

It's fascinating how it helps us understand Earth's history through rock layers.

I can see why that would be important for geologists!

Synonyms & Antonyms

Root Explanation

Stratigraphy → It is formed from "stratum" (from Latin, meaning layer) and "-graphy" (from Greek "grapho", meaning to write or describe). The word refers to the study of layers of rock or soil, essentially describing the layers.

Memory Tip

Think of 'layers' ('stratum') being 'described' ('-graphy') — that's what stratigraphy means, the study of layers.

Visually Confused Words