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Permafrost: Where It’s Found and the Different Types
What is permafrost? Permafrost is a condition where a layer of soil, sediment, or rock below the ground surface...
Main Events of The Quaternary Period
The Quaternary has some specific events that distinguish this period from the Tertiary, including significant climatic...
Classification of Paleosol
Paleosols are the soils of ancient times. Sometimes, it is called fossil soils. Despite increased interest in...
Crystallography and Minerals
Types of Metamorphic Reactions
Metamorphic Reaction: The study of metamorphic reactions provides vital information about the pressure and temperature...
Non-Foliated Rocks: Definition and Types.
Non-foliated rocks are metamorphic rocks without a layered structure, forming under uniform pressure or due to mineral...
Foliated Rocks and Their Types in Metamorphism
Foliated rocks include slate, phyllite, schist, gneiss, and migmatite. Each type varies in grain size, mineral...
Economic & Historical Geology
Sea Level Changes in The Geologic Past
Sea level has never been constant throughout Earth’s history. It has risen and fallen over geological time due to...
Topography of Bangladesh
Bangladesh, a South-East Asian country, is located at the lowermost reaches of the Bengal Basin. The Quaternary...
Biostratigraphy of Bangladesh
The Cenozoic succession of Bangladesh has been differentiated into a number of biostratigraphic units, viz.,...
Petrology
Evolution of Organic Matter into Petroleum
Petroleum evolves from organic matter through heat, pressure, and time. Initially, buried material transforms into...
Natural Gas: Its Origins, Composition and Classification
Natural Gas: Natural gas is a mixture of hydrocarbon (lower) that occurs in nature and exits in a gaseous state at...
Petroleum: Its Physical Properties and Chemical Classification
Petroleum is an essential fossil fuel composed of a natural mixture of hydrocarbons, including crude oil, natural gas,...
Geomorphology
Permafrost: Where It’s Found and the Different Types
What is permafrost? Permafrost is a condition where a layer of soil, sediment, or rock below the ground surface...
Main Events of The Quaternary Period
The Quaternary has some specific events that distinguish this period from the Tertiary, including significant climatic...
Classification of Paleosol
Paleosols are the soils of ancient times. Sometimes, it is called fossil soils. Despite increased interest in...