General Geology

Home General Geology

Fault and Types of Faults

Fault is a fracture or crack where two rock blocks slide past one to another. If this movement may occur rapidly, it can be causes earthquike or slowly, in the form of creep.Types of faults include strike-slip faults, normal faults, reverse faults, thrust faults, and oblique-slip faults.

Weathering Types

Spheroidal Weathering
Weathering is the combination of processes that breaking down of rocks, soil and minerals, eventually transforming into sediment. On the other hand, disintegration or alteration of the rock surface in its natural or original position through physical, chemical and biological processes induced or modified by wind, water and climate.

Bowen’s Reaction Series

Bowen's reaction series is based on observations and experiments of natural rocks, the crystallization sequence of typical basaltic magma change as they cool. It is a sorting tool according to the temperature at which they crystallize common magmatic silicate minerals.

The Rock Cycle

Rock Cycle
The rock cycle basic definiton is transitions among the three main rock types, which are metamorphic, igneous and sedimentary rocks. Each of the rocks can be altered when they are force out equilibrium conditions.The rock cycle describes how the three rock types are interrelated and how processes change from one to another over time.The rock cycle

Geophysical Methods

The seismic method is used in geophysical prospecting process
The physical properties of rocks have been used to devise geophysical methods that are essential in the search for minerals, oil...


The seismic method is used in geophysical prospecting process
The rocks does not differ only by their macroscopic or microscopic properties studied field geologists or petrologists. They also differ by their chemical and physical properties. Hence as the rocks differ according to their origin, structure, texture, etc. they also differ by their density, magnetisation, resistivity, etc. The bad news is that the physical properties do not always clearly correlates with geological classifications and do not necessarily easily translates into the geological terms.

Types of Maps

Projections Because the shape of the world is spherical, it is difficult to represent it on a...

Latitude and Longitude

Geographic coordinate system The representation of each place on the Earth by numbers and symbols is called the...

Physical Properties of Minerals

Minerals are the materials that make up the Earth Naturally occurring,Homogeneous solid,with a definite (not fixed) chemical composition,and a...

Plate Tectonics

Plate tectonics describes the motions of the 15 to 20 large rigid and brittle tectonic plates into which the Earth's outermost layer (called the...

Structure of Earth

Interior of the Earth: Crust, Mantle and Core In this article (geography section),...

Optical Properties of Minerals

Study of how light passes through thin sections – rock cut and polished to about 0.3 mm thickness Use properties of light absorption and propogation through a mineral à affected by atomic arrangement and composition Learn the properties of light associated with techniques governing the use of a petrographic microscope