macrostrat

Query Macrostrat for formation ages, lithology, thickness, and depositional environments.

Updated Mar 5, 2026

Search Tags:#geology #stratigraphy #earth science #paleontology #rock formations #geological database

Ready to run

npx skills add https://github.com/jpfielding/claude.pnge --skill macrostrat

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: macrostrat
Source: https://github.com/jpfielding/claude.pnge/tree/main/skills/macrostrat
Command: npx skills add https://github.com/jpfielding/claude.pnge --skill macrostrat

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill provides access to detailed geological information, helping users understand the age, composition, and depositional environment of rock formations worldwide.

Core Features & Use Cases

Stratigraphic Data: Query formation ages, lithology, and thickness.
Geological Context: Understand depositional environments and stratigraphic position.
Use Case: A petroleum engineer needs to know the age and lithology of the Marcellus Shale in the Appalachian Basin to assess its potential as a reservoir. This Skill can provide that information directly.

Quick Start

Find the age and lithology of the Marcellus Shale formation.

Frequently Asked Questions about macrostrat

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I find the geological age and lithology of a rock formation?▼

You can find the geological age and lithology of a rock formation by querying the Macrostrat database for stratigraphic columns, which returns formatted tables with age, rock type, and thickness data.

What is the depositional environment of a specific stratigraphic unit?▼

The depositional environment of a stratigraphic unit is provided by querying the Macrostrat geological database, which places formations in their stratigraphic context and returns the depositional setting alongside age and lithology.

Can I retrieve stratigraphic column data for North American geological units?▼

Yes, you can retrieve stratigraphic column data for North American geological units. The Macrostrat database supports queries for both North American and global geological units, returning age, lithology, and thickness.

How do I get formation thickness ranges for rock layers in a basin?▼

Get formation thickness ranges for rock layers in a basin by querying the Macrostrat geological database, which produces stratigraphic tables containing thickness ranges alongside age, lithology, and depositional environment data.

Does this geological database provide global coverage or is it limited to North America?▼

This geological database provides global coverage and is not limited to North America. It supports queries for both North American and global geological units to retrieve stratigraphic and lithology data.

What stratigraphic context information can I query for the Marcellus Shale?▼

For the Marcellus Shale, you can query stratigraphic context information including formation age, lithology, thickness ranges, and depositional environment to assess its characteristics as a potential reservoir.