Petrology
Petrology is the branch of geology that dives into how rocks originate, what they’re made of, how their textures and structures reflect the forces that formed them — from molten magma solidifying to deep-burial metamorphism and surface sedimentary layering. In this category, you’ll explore the chemical and physical story behind every rock type, understand how they transform through geological time, and see why engineers, geologists and field-practitioners care deeply about their composition and behaviour.
Index Minerals and Metamorphic Grades
What Are Index Minerals?Metamorphic rocks record the physical and chemical changes that occur deep within Earth’s crust. Among the most important clues to these...
Basalt vs Granite – Key Differences
Basalt and granite are among the most common and important igneous rocks on Earth. Both form from molten magma, but under very different conditions.Basalt...
Textures of Igneous Rocks
When geologists study igneous rocks, the first thing they look at is not color or composition, but texture — the size, arrangement, and relationship...
Metamorphic Textures & Fabrics
When a rock enters the metamorphic environment, it begins a slow but profound transformation. Heat increases, pressure rises, minerals dissolve and re-crystallize, grains rotate,...
