Definition
Marl is an unconsolidated sedimentary rock consisting of clay and lime
History
Origin
-
Discoverer
William Smith
Etymology
From Old French marle, from Late Latin marglia
Class
Sedimentary Rocks
Sub-Class
Durable Rock, Soft Rock
Family
Group
-
Other Categories
Fine Grained Rock, Opaque Rock
Texture
Earthy
Color
Beige, Brown, Green, Grey, White
Maintenance
Less
Durability
Durable
Water Resistant
✔
✘
58% - Sedimentary Rocks Rocks have it !
Scratch Resistant
✔
✘
61% - Sedimentary Rocks Rocks
Stain Resistant
✔
✘
42% - Sedimentary Rocks Rocks
Wind Resistant
✔
✘
36% - Sedimentary Rocks Rocks
Acid Resistant
✔
✘
19% - Sedimentary Rocks Rocks
Appearance
Rough and Dull
Architecture
Interior Uses
Decorative Aggregates, Floor Tiles
Exterior Uses
As Building Stone, Roof Tiles
Other Architectural Uses
Curbing
Industry
Construction Industry
Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar
Medical Industry
-
Antiquity Uses
Artifacts, Jewellery, Sculpture, Small Figurines
Other Uses
Commercial Uses
Creating Artwork, Soil Conditioner
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
Features
Generally rough to touch, Is one of the oldest rock, Splintery, Very fine grained rock
Archaeological Significance
Monuments
-
Famous Monuments
-
Sculpture
-
Famous Sculptures
-
Pictographs
-
Petroglyphs
-
Figurines
-
Fossils
Present
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.
Composition
Mineral Content
Calcite, Clay, Dolomite, Gypsum, Micas, Pyrite, Quartz
Compound Content
Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, Silicon Dioxide
Transformation
Metamorphism
✔
✘
17% - Sedimentary Rocks Rocks
Types of Metamorphism
-
Weathering
✔
✘
78% - Sedimentary Rocks Rocks have it !
Types of Weathering
Biological Weathering, Chemical Weathering
Erosion
✔
✘
86% - Sedimentary Rocks Rocks have it !
Types of Erosion
Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion
Physical Properties
Hardness
2-3
1
7
👆🏻
Grain Size
Very fine-grained
Fracture
Conchoidal
Streak
White
Porosity
Highly Porous
Luster
Dull
Compressive Strength
30.00 N/mm2
Rank: 44 (Overall)
0.15
450
👆🏻
Cleavage
-
Toughness
2.6
Specific Gravity
2.2-2.8
0
8.4
👆🏻
Transparency
Opaque
Density
2.4-2.8 g/cm3
0
1400
👆🏻
Thermal Properties
Specific Heat Capacity
0.80 kJ/Kg K
Rank: 16 (Overall)
0.14
3.2
👆🏻
Resistance
Heat Resistant, Impact Resistant
Deposits in Eastern Continents
Asia
India, Pakistan, Russia
Africa
Ethiopia, Kenya, Morocco, South Africa
Europe
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, 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