March 2014

Steno's Principles of Stratigraphy

Steno's Principles of Stratigraphy are four basic principles that govern the way that sedimentary rocks are deposited an…

Growth Fault

Growth Fault Growth Fault a fault in sedimentary rock that forms contemporaneously and continuously with deposition so t…

Contact Metamorphism

Contact metamorphism is a type of metamorphism that occurs when rocks are heated by the intrusion of hot magma. The heat fro…

Volcanic Bombs

Volcanic Bombs. Fresh Volcanic Bomb photo by J.D. Griggs Volcanic bomb is a pyroclast which was semi-molten (visc…

Hotspots the Hottest places on Earth

The places known as hotspots or hot spots in geology are volcanic regions thought to be fed by underlying mantle that is …

Oil Shale

Oil Shale Oil shale , also known as kerogen shale, is an organic-rich fine-grained sedimentary rock containing keroge…

Types of Drainage Patterns

Drainage pattern a pattern created by stream erosion over time that reveals characteristics of the kind of rocks and geol…

Cleavage of Minerals

Cleavage is the tendency of a mineral to break along flat, smooth planes due to the arrangement of its atoms. These planes o…

Volcanology

Volcanology   is the study of volcanoes, lava, magma, and related geological, geophysical and geochemical phenomena. The …

Luster of Minerals: Types & Examples

The luster of a mineral is the way in which it reflects light. It is one of the most important physical prope…

The Streak of Minerals

The streak of a mineral is the color of the powder produced when it is dragged across an un-weathered surface, typically a p…

Andradite

Locality: Dashkesan (Dashkezan) Co-Fe deposit, Dashkesan, Daşkəsən (Daskasan; Dashkyasan) District, Azerbaijan. F…

Acicular Natrolit from India

Natrolite is a tectosilicate mineral species belonging to the zeolite group. Formula: Na2Al2Si3O10 · 2H2O System: Ort…

Ash: What is Volcanic Ash

Volcanic ash is a fine-grained material composed of rock, mineral, and volcanic glass fragments produced during explosive vo…

Fantastic Azurite

Azurite |‪#‎Geology Formula: Cu3(CO3)2(OH)2 System:Monoclinic Colour:Azure blue, blue, light ... Lustre:Vitr…