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Cataclasite
Cataclasite

Pseudotachylite
Pseudotachylite



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Cataclasite
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Pseudotachylite

Cataclasite vs Pseudotachylite

Definition

Definition

Cataclasite is a type of cataclastic rock that is formed by fracturing and comminution during faulting. It is normally cohesive and non-foliated, consisting of angular clasts in a finer-grained matrix
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.

History

Origin

Swiss Alps, Europe
USA

Discoverer

Michael Tellinger
Unknown

Etymology

From the Italian word cataclasi
From pseudo- +‎ tachylite, a glassy rock generated by frictional heat within faults.

Class

Metamorphic Rocks
Metamorphic Rocks

Sub-Class

Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock

Family

Group

-
-

Other Categories

Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock

Texture

Texture

Clastic
Quench

Color

Brown, Green, White, Yellow
Black, Brown, Green, Grey, Pink, White

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Dull and Banded
Dull and Soft

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes
Decorative Aggregates, Entryways, Interior Decoration

Exterior Uses

As Building Stone, As Facing Stone, Paving Stone
As Building Stone, As Facing Stone, Garden Decoration

Other Architectural Uses

Curbing
Curbing

Industry

Construction Industry

As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate
As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement

Medical Industry

-
-

Antiquity Uses

Artifacts
Artifacts, Monuments

Other Uses

Commercial Uses

Commemorative Tablets, Creating Artwork
Creating Artwork, Gemstone

Types

Types

Protocataclasite, Mesocataclasite, Ultracataclasite and Foliated cataclasite
Cataclastic rock

Features

Easily splits into thin plates, Is one of the oldest rock
Host Rock for Lead

Archaeological Significance

Monuments

-
-

Famous Monuments

-
-

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

Fossils

Absent
Absent

Formation

Formation

Cataclasiste rocks mainly form by pressure deep under the Earth's surface, from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.
Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Pseudotachylite is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.

Composition

Mineral Content

Albite, Apatite, Augite, Biotite, Calcite, Enstatite, Epidote, Feldspar, Micas, Muscovite or Illite, Pyroxene, Quartz
Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides

Compound Content

Silicon Dioxide
Carbon Dioxide, Silicon Dioxide, Sulfur Dioxide, Sulphur

Transformation

Metamorphism

Types of Metamorphism

-
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

Weathering

Types of Weathering

Mechanical Weathering
-

Erosion

Types of Erosion

Coastal Erosion, Wind Erosion
-

Properties

Physical Properties

Hardness

3-47
1 7
👆🏻

Grain Size

Fine Grained
Very fine-grained

Fracture

-
Uneven

Streak

Black
Light to dark brown

Porosity

Less Porous
Less Porous

Luster

Vitreous
Vitreous

Compressive Strength

50.00 N/mm260.00 N/mm2
0.15 450
👆🏻

Cleavage

-
-

Toughness

-
-

Specific Gravity

2.12.46-2.86
0 8.4
👆🏻

Transparency

Translucent to Opaque
Transparent to Translucent

Density

2.9-3.1 g/cm32.7-2.9 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K0.92 kJ/Kg K
0.14 3.2
👆🏻

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant
Heat Resistant

Reserves

Deposits in Eastern Continents

Asia

China, India, Russia, Saudi Arabia, South Korea
South Korea

Africa

Egypt, Ethiopia, Kenya, Madagascar, Morocco, South Africa
Western Africa

Europe

England, Finland, France, Spain, United Kingdom
Great Britain, Switzerland

Others

-
-

Deposits in Western Continents

North America

Canada, USA
-

South America

Argentina, Colombia
-

Deposits in Oceania Continent

Australia

Central Australia, Western Australia
Central Australia, Western Australia

Cataclasite vs Pseudotachylite Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Cataclasite and Pseudotachylite Reserves. Cataclasite is a type of cataclastic rock that is formed by fracturing and comminution during faulting. It is normally cohesive and non-foliated, consisting of angular clasts in a finer-grained matrix. Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Cataclasite vs Pseudotachylite information and Cataclasite vs Pseudotachylite characteristics in the upcoming sections.

Cataclasite vs Pseudotachylite Characteristics

Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Cataclasite vs Pseudotachylite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Cataclasite and Properties of Pseudotachylite. Learn more about Cataclasite vs Pseudotachylite in the next section. The interior uses of Cataclasite include Decorative aggregates and Homes whereas the interior uses of Pseudotachylite include Decorative aggregates, Entryways and Interior decoration. Due to some exceptional properties of Cataclasite and Pseudotachylite, they have various applications in construction industry. The uses of Cataclasite in construction industry include As dimension stone, Building houses or walls, Cement manufacture, Construction aggregate, For road aggregate and that of Pseudotachylite include As dimension stone, Cement manufacture, For road aggregate, Making natural cement.

More about Cataclasite and Pseudotachylite

Here you can know more about Cataclasite and Pseudotachylite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Cataclasite and Pseudotachylite consists of mineral content and compound content. The mineral content of Cataclasite includes Albite, Apatite, Augite, Biotite, Calcite, Enstatite, Epidote, Feldspar, Micas, Muscovite or Illite, Pyroxene, Quartz and mineral content of Pseudotachylite includes Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides. You can also check out the list of all Metamorphic Rocks. When we have to compare Cataclasite vs Pseudotachylite, the texture, color and appearance plays an important role in determining the type of rock. Cataclasite is available in brown, green, white, yellow colors whereas, Pseudotachylite is available in black, brown, green, grey, pink, white colors. Appearance of Cataclasite is Dull and Banded and that of Pseudotachylite is Dull and Soft. Properties of rock is another aspect for Cataclasite vs Pseudotachylite. The hardness of Cataclasite is 3-4 and that of Pseudotachylite is 7. The types of Cataclasite are Protocataclasite, Mesocataclasite, Ultracataclasite and Foliated cataclasite whereas types of Pseudotachylite are Cataclastic rock. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Cataclasite is black while that of Pseudotachylite is light to dark brown. The specific heat capacity of Cataclasite is 0.84 kJ/Kg K and that of Pseudotachylite is 0.92 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Cataclasite is heat resistant, impact resistant, pressure resistant whereas Pseudotachylite is heat resistant.