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Marl vs Pseudotachylite


Pseudotachylite vs Marl


Definition

Definition
Marl is an unconsolidated sedimentary rock consisting of clay and lime  
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.  

History
  
  

Origin
-  
USA  

Discoverer
William Smith  
Unknown  

Etymology
From Old French marle, from Late Latin marglia  
From pseudo- +‎ tachylite, a glassy rock generated by frictional heat within faults.  

Class
Sedimentary Rocks  
Metamorphic Rocks  

Sub-Class
Durable Rock, Soft Rock  
Durable Rock, Hard Rock  

Family
  
  

Group
-  
-  

Other Categories
Fine Grained Rock, Opaque Rock  
Fine Grained Rock, Opaque Rock  

Texture

Texture
Earthy  
Quench  

Color
Beige, Brown, Green, Grey, White  
Black, Brown, Green, Grey, Pink, White  

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
Yes  
Yes  

Scratch Resistant
No  
Yes  

Stain Resistant
No  
No  

Wind Resistant
No  
Yes  

Acid Resistant
No  
Yes  

Appearance
Rough and Dull  
Dull and Soft  

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Floor Tiles  
Decorative Aggregates, Entryways, Interior Decoration  

Exterior Uses
As Building Stone, Roof Tiles  
As Building Stone, As Facing Stone, Garden Decoration  

Other Architectural Uses
Curbing  
Curbing  

Industry
  
  

Construction Industry
Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar  
As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement  

Medical Industry
-  
-  

Antiquity Uses
Artifacts, Jewellery, Sculpture, Small Figurines  
Artifacts, Monuments  

Other Uses
  
  

Commercial Uses
Creating Artwork, Soil Conditioner  
Creating Artwork, Gemstone  

Types

Types
Clay Marl ,Blue Marl, Red Marl, High Bank Marl, Shell Layer Marl, Under Shell Layer Marl, Sand Marl, Green Marl, Grey Marl and Clayey Marl  
Cataclastic rock  

Features
Generally rough to touch, Is one of the oldest rock, Splintery, Very fine grained rock  
Host Rock for Lead  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Present  
Absent  

Formation

Formation
Marl forms when very fine-grained clay particles are deposited in water which settles at the bottom of water bodies and are compacted by overlying sediment; the water squeezes out and hence forming Marl rock.  
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
Calcite, Clay, Dolomite, Gypsum, Micas, Pyrite, Quartz  
Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides  

Compound Content
Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, Silicon Dioxide  
Carbon Dioxide, Silicon Dioxide, Sulfur Dioxide, Sulphur  

Transformation
  
  

Metamorphism
No  
Yes  

Types of Metamorphism
-  
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism  

Weathering
Yes  
No  

Types of Weathering
Biological Weathering, Chemical Weathering  
-  

Erosion
Yes  
No  

Types of Erosion
Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion  
-  

Properties

Physical Properties
  
  

Hardness
2-3  
7  

Grain Size
Very fine-grained  
Very fine-grained  

Fracture
Conchoidal  
Uneven  

Streak
White  
Light to dark brown  

Porosity
Highly Porous  
Less Porous  

Luster
Dull  
Vitreous  

Compressive Strength
30.00 N/mm2  
99+
60.00 N/mm2  
37

Cleavage
-  
-  

Toughness
2.6  
-  

Specific Gravity
2.2-2.8  
2.46-2.86  

Transparency
Opaque  
Transparent to Translucent  

Density
2.4-2.8 g/cm3  
2.7-2.9 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.80 kJ/Kg K  
16
0.92 kJ/Kg K  
10

Resistance
Heat Resistant, Impact Resistant  
Heat Resistant  

Reserves

Deposits in Eastern Continents
  
  

Asia
India, Pakistan, Russia  
South Korea  

Africa
Ethiopia, Kenya, Morocco, South Africa  
Western Africa  

Europe
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland  
Great Britain, Switzerland  

Others
-  
-  

Deposits in Western Continents
  
  

North America
USA  
-  

South America
Colombia, Ecuador, Peru  
-  

Deposits in Oceania Continent
  
  

Australia
New South Wales, Victoria, Western Australia  
Central Australia, Western Australia  

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Marl 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 Marl and Pseudotachylite Reserves. Marl is an unconsolidated sedimentary rock consisting of clay and lime. 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 Marl vs Pseudotachylite information and Marl vs Pseudotachylite characteristics in the upcoming sections.

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Marl 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. Marl vs Pseudotachylite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Marl and Properties of Pseudotachylite. Learn more about Marl vs Pseudotachylite in the next section. The interior uses of Marl include Decorative aggregates and Floor tiles whereas the interior uses of Pseudotachylite include Decorative aggregates, Entryways and Interior decoration. Due to some exceptional properties of Marl and Pseudotachylite, they have various applications in construction industry. The uses of Marl in construction industry include Cement manufacture, Construction aggregate, For road aggregate, Making natural cement, Raw material for the manufacture of mortar and that of Pseudotachylite include As dimension stone, Cement manufacture, For road aggregate, Making natural cement.

More about Marl and Pseudotachylite

Here you can know more about Marl and Pseudotachylite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Marl and Pseudotachylite consists of mineral content and compound content. The mineral content of Marl includes Calcite, Clay, Dolomite, Gypsum, Micas, Pyrite, Quartz and mineral content of Pseudotachylite includes Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides. You can also check out the list of all Sedimentary Rocks. When we have to compare Marl vs Pseudotachylite, the texture, color and appearance plays an important role in determining the type of rock. Marl is available in beige, brown, green, grey, white colors whereas, Pseudotachylite is available in black, brown, green, grey, pink, white colors. Appearance of Marl is Rough and Dull and that of Pseudotachylite is Dull and Soft. Properties of rock is another aspect for Marl vs Pseudotachylite. The hardness of Marl is 2-3 and that of Pseudotachylite is 7. The types of Marl are Clay Marl ,Blue Marl, Red Marl, High Bank Marl, Shell Layer Marl, Under Shell Layer Marl, Sand Marl, Green Marl, Grey Marl and Clayey Marl 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 Marl is white while that of Pseudotachylite is light to dark brown. The specific heat capacity of Marl is 0.80 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.Marl is heat resistant, impact resistant whereas Pseudotachylite is heat resistant.

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