Chalk and Turbidite
Definition
Definition
Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers
A sedimentary rock, deposit of a submarine turbidity currents and are composed of layered particles
History
Origin
Unknown
European Foreland Basins
Discoverer
Unknown
Arnold H. Bouma
Etymology
From old English cealc chalk, lime, plaster; pebble, from Greek khalix small pebble, in English transferred to the opaque, white, soft limestone
From Medieval Latin turbiditas, from Latin turbidus (turbid). Turbidity current is from 1939
Class
Sedimentary Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Soft Rock
Family
Group
Not Applicable
Not Applicable
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Opaque Rock
Texture
Texture
Clastic or Non-Clastic
Mud-rich, Sandy
Color
Grey, White, Yellow
Black, Brown, Colourless, Green, Grey, Pink
Maintenance
Less
Less
Durability
Durable
Durable
Water Resistant
No
Yes
Scratch Resistant
No
Yes
Stain Resistant
No
No
Wind Resistant
No
Yes
Acid Resistant
No
No
Appearance
Soft
Dull and Banded
Uses
Architecture
Interior Uses
Decorative Aggregates, Homes, Interior Decoration
Bathrooms, Countertops, Decorative Aggregates, Flooring, Homes, Interior Decoration
Exterior Uses
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration
Other Architectural Uses
Powder
Curbing
Industry
Construction Industry
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, raw material for manufacture of quicklime and slaked lime, Source of calcium
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement
Medical Industry
Not Yet Used
Not Yet Used
Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines
Artifacts, Monuments, Sculpture
Other Uses
Commercial Uses
Alumina Refineries, Creating Artwork, Drawing on blackboards, Gymnasts, athletes and mountain climbers use for grip, In aquifers, Paper Industry, Production of Lime, Raw material for manufacture of quicklime, slaked lime, Soil Conditioner, Whiting, Whiting material in toothpaste, paint and paper
Cemetery Markers, Creating Artwork
Types
Types
Not Available
Not Available
Features
Clasts are smooth to touch, Is one of the oldest rock, Smooth to touch, Very fine grained rock
High silica content, Host Rock for Lead
Archaeological Significance
Monuments
Used
Used
Famous Monuments
Data Not Available
Data Not Available
Sculpture
Used
Used
Famous Sculptures
Data Not Available
Data Not Available
Pictographs
Used
Used
Petroglyphs
Used
Used
Figurines
Used
Used
Fossils
Present
Present
Formation
Formation
Chalk is formed from lime mud, which accumulates on the sea floor which is then transformed into rock by geological processes.
Turbidite is a type of sedimentary rock formed when a river carries or transports pieces of broken rock as it flows. These particles then settle down and are subjected to high temperature and pressures hence forming Turbidite.
Composition
Mineral Content
Calcite, Clay, Clay Minerals, Quartz, Sand
Coesite, Quartz, Sand
Compound Content
Ca, NaCl, CaO
CaO, Carbon Dioxide, MgO
Transformation
Metamorphism
No
No
Types of Metamorphism
Not Applicable
Not Applicable
Weathering
Yes
Yes
Types of Weathering
Biological Weathering, Chemical Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Erosion
Yes
Yes
Types of Erosion
Chemical Erosion, Coastal Erosion, Water Erosion
Chemical Erosion, Coastal Erosion, Sea Erosion, Water Erosion, Wind Erosion
Properties
Physical Properties
Hardness
1
3
Grain Size
Very fine-grained
Fine to Coarse Grained
Fracture
Not Available
Splintery
Streak
White
White, Greenish White or Grey
Porosity
Highly Porous
Very Less Porous
Luster
Dull
Metallic
Compressive Strength
Not Available
200.00 N/mm2
10
Cleavage
Non-Existent
Disjunctive
Toughness
1
2.4
Specific Gravity
2.3-2.4
2.46-2.73
Transparency
Opaque
Opaque
Density
2.49-2.50 g/cm3
1.6-2.5 g/cm3
Thermal Properties
Specific Heat Capacity
0.90 kJ/Kg K
12
0.92 kJ/Kg K
10
Resistance
Heat Resistant
Heat Resistant
Reserves
Deposits in Eastern Continents
Asia
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam
Not Yet Found
Africa
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe
Western Africa
Europe
England, France, Germany, Spain, United Kingdom
Austria, Belarus, Romania, Switzerland, United Kingdom
Others
Not Yet Found
Not Yet Found
Deposits in Western Continents
North America
Canada, USA
Canada, USA
South America
Colombia
Brazil, Colombia
Deposits in Oceania Continent
Australia
Adelaide, New Zealand, Queensland, Tonga, Victoria, Yorke Peninsula
New Zealand, Western Australia
All about Chalk and Turbidite Properties
Know all about Chalk and Turbidite properties here. All properties of rocks are important as they define the type of rock and its application. Chalk and Turbidite belong to Sedimentary Rocks.Texture of Chalk is Clastic or Non-Clastic whereas that of Turbidite is Mud-rich, Sandy. Chalk appears Soft and Turbidite appears Dull and Banded. The luster of Chalk is dull while that of Turbidite is metallic. Chalk is available in grey, white, yellow colors whereas Turbidite is available in black, brown, colourless, green, grey, pink colors. The commercial uses of Chalk are alumina refineries, creating artwork, drawing on blackboards, gymnasts, athletes and mountain climbers use for grip, in aquifers, paper industry, production of lime, raw material for manufacture of quicklime, slaked lime, soil conditioner, whiting, whiting material in toothpaste, paint and paper and that of Turbidite are cemetery markers, creating artwork.
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