Definition
Travertine is a mineral consisting of layered calcium carbonate formed by deposition from spring waters
Marl is an unconsolidated sedimentary rock consisting of clay and lime
Discoverer
Marcus Vitruvius Pollio
William Smith
Etymology
From Italian travertino a kind of building stone, from Tiburs, adjective from Tibur (Tivoli), in Italy
From Old French marle, from Late Latin marglia
Class
Sedimentary Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
Color
Beige, Black, Blue, Brown, Grey, Red, White, Yellow
Beige, Brown, Green, Grey, White
Durability
Durable
Durable
Appearance
Fibrous
Rough and Dull
Interior Uses
Decorative Aggregates, Entryways, Flooring, Homes, Interior Decoration
Decorative Aggregates, Floor Tiles
Exterior Uses
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration, Office Buildings
As Building Stone, Roof Tiles
Other Architectural Uses
Curbing
Curbing
Construction Industry
As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Raw material for the manufacture of mortar
Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar
Antiquity Uses
Artifacts, Jewellery, Monuments, Sculpture, Small Figurines
Artifacts, Jewellery, Sculpture, Small Figurines
Commercial Uses
Cemetery Markers, Creating Artwork, Gemstone, Jewelry, Paper Industry, Pottery
Creating Artwork, Soil Conditioner
Types
Thermal Travertine and Tufa
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
Stalactites and stalagmites are formed from this rock, Surfaces are often shiny, Very fine grained rock
Generally rough to touch, Is one of the oldest rock, Splintery, Very fine grained rock
Archaeological Significance
Famous Monuments
Colosseum in Rome, Italy, Sacré Coeur in Paris, France, Trevi Fountain in Rome, Italy
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Formation
Travertine is a type of sedimentary rock formed when a river carries or transports pieces of broken rock which then undergo sedimentation. They are then subjected to high temperature and pressure hence forming travertine rock.
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.
Mineral Content
Calcite, Clay, Feldspar, Micas, Quartz
Calcite, Clay, Dolomite, Gypsum, Micas, Pyrite, Quartz
Compound Content
Ca, NaCl, CaO, Oxygen
Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, Silicon Dioxide
Types of Metamorphism
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Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Biological Weathering, Chemical Weathering
Types of Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion
Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion
Grain Size
Fine Grained
Very fine-grained
Fracture
Splintery
Conchoidal
Porosity
Highly Porous
Highly Porous
Luster
Dull to Pearly
Dull
Specific Gravity
1.68
2.2-2.8
Transparency
Opaque
Opaque
Density
2.71 g/cm3
2.4-2.8 g/cm3
Resistance
Impact Resistant, Pressure Resistant, Wear Resistant
Heat Resistant, Impact Resistant
Deposits in Eastern Continents
Asia
China, Russia
India, Pakistan, Russia
Africa
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Ethiopia, Kenya, Morocco, South Africa
Europe
Austria, Italy, Portugal, United Kingdom
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland
Deposits in Western Continents
North America
Canada, USA
USA
South America
Argentina, Bolivia, Ecuador
Colombia, Ecuador, Peru
Deposits in Oceania Continent
Australia
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New South Wales, Victoria, Western Australia
All about Travertine and Marl Properties
Know all about Travertine and Marl properties here. All properties of rocks are important as they define the type of rock and its application. Travertine and Marl belong to Sedimentary Rocks.Texture of Travertine is Banded whereas that of Marl is Earthy. Travertine appears Fibrous and Marl appears Rough and Dull. The luster of Travertine is dull to pearly while that of Marl is dull. Travertine is available in beige, black, blue, brown, grey, red, white, yellow colors whereas Marl is available in beige, brown, green, grey, white colors. The commercial uses of Travertine are cemetery markers, creating artwork, gemstone, jewelry, paper industry, pottery and that of Marl are creating artwork, soil conditioner.