Greywacke

Turbidite

Greywacke and Turbidite

Greywacke

Turbidite

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1 Definition

1.1 Definition

Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay

A sedimentary rock, deposit of a submarine turbidity currents and are composed of layered particles

1.2 History

1.2.1 Origin

Unknown

European Foreland Basins

1.2.2 Discoverer

Unknown

Arnold H. Bouma

1.3 Etymology

From German Grauwacke, from grau grey + wacke

From Medieval Latin turbiditas, from Latin turbidus (turbid). Turbidity current is from 1939

1.4 Class

Sedimentary Rocks

1.4.1 Sub-Class

Durable Rock, Hard Rock

Durable Rock, Soft Rock

1.5 Family

1.5.1 Group

Not Applicable

1.6 Other Categories

Fine Grained Rock, Opaque Rock

Coarse Grained Rock, Fine Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Clastic

Mud-rich, Sandy

2.2 Color

Beige, Black, Brown, Colourless, Cream, Dark Brown, Green, Grey, Light Green, Light to Dark Grey, Pink, Red, White, Yellow

Black, Brown, Colourless, Green, Grey, Pink

2.3 Maintenance

Less

2.4 Durability

Durable

2.4.1 Water Resistant

✔ ✘

2.4.2 Scratch Resistant

✔ ✘

2.4.3 Stain Resistant

✔ ✘

2.4.4 Wind Resistant

✔ ✘

2.4.5 Acid Resistant

✔ ✘

2.5 Appearance

Dull

Dull and Banded

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Floor Tiles, Flooring, Homes, Interior Decoration

Bathrooms, Countertops, Decorative Aggregates, Flooring, Homes, Interior Decoration

3.1.2 Exterior Uses

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

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

3.1.3 Other Architectural Uses

Curbing, Whetstones

Curbing

3.2 Industry

3.2.1 Construction Industry

Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Raw material for the manufacture of mortar

As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts, Sculpture, Small Figurines

Artifacts, Monuments, Sculpture

3.4 Other Uses

3.4.1 Commercial Uses

As armour rock for sea walls, Petroleum reservoirs, Sea Defence, Tombstones

Cemetery Markers, Creating Artwork

4 Types

4.1 Types

Not Available

4.2 Features

Available in Lots of Colors and Patterns, Generally rough to touch, Non-vesicular, Veined

High silica content, Host Rock for Lead

4.3 Archaeological Significance

4.3.1 Monuments

Not Yet Used

Used

4.3.2 Famous Monuments

Not Applicable

Data Not Available

4.3.3 Sculpture

Used

4.3.4 Famous Sculptures

Data Not Available

4.3.5 Pictographs

Not Used

Used

4.3.6 Petroglyphs

Not Used

Used

4.3.7 Figurines

Used

4.4 Fossils

Present

5 Formation

5.1 Formation

Graywacke rock is a type of sedimentary rock, which is also known as immature sandstone, which is indurated, dark grey and consisting of poorly sorted angular to sub-angular, sand-sized grains.

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.

5.2 Composition

5.2.1 Mineral Content

Augite, Biotite, Calcite, Chlorite, Clay, Clay Minerals, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz

Coesite, Quartz, Sand

5.2.2 Compound Content

Aluminium Oxide, NaCl, CaO, Chromium(III) Oxide, Iron(III) Oxide, FeO, Potassium Oxide, Magnesium Carbonate, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide

CaO, Carbon Dioxide, MgO

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Not Applicable

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Biological Weathering, Chemical Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Coastal Erosion, Sea Erosion, Wind Erosion

Chemical Erosion, Coastal Erosion, Sea Erosion, Water Erosion, Wind Erosion

6 Properties

6.1 Physical Properties

6.1.1 Hardness

6-73

1 7

6.1.2 Grain Size

Angular and Fine

Fine to Coarse Grained

6.1.3 Fracture

Conchoidal

Splintery

6.1.4 Streak

White

White, Greenish White or Grey

6.1.5 Porosity

Highly Porous

Very Less Porous

6.1.6 Luster

Dull

Metallic

6.1.7 Compressive Strength

NA200.00 N/mm²

0.15 450

6.1.8 Cleavage

Perfect

Disjunctive

6.1.9 Toughness

2.6

2.4

6.1.10 Specific Gravity

2.2-2.82.46-2.73

0 8.4

6.1.11 Transparency

Opaque

6.1.12 Density

2.6-2.61 g/cm³1.6-2.5 g/cm³

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

NA0.92 kJ/Kg K

0.14 3.2

6.2.2 Resistance

Heat Resistant, Impact Resistant, Pressure Resistant

Heat Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

China, India, Kazakhstan, Mongolia, Russia, Uzbekistan

Not Yet Found

7.1.2 Africa

Namibia, Nigeria, South Africa

Western Africa

7.1.3 Europe

Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom

Austria, Belarus, Romania, Switzerland, United Kingdom

7.1.4 Others

Greenland

Not Yet Found

7.2 Deposits in Western Continents

7.2.1 North America

Canada, USA

7.2.2 South America

Brazil

Brazil, Colombia

7.3 Deposits in Oceania Continent

7.3.1 Australia

New South Wales, New Zealand

New Zealand, Western Australia

All about Greywacke and Turbidite Properties

Know all about Greywacke and Turbidite properties here. All properties of rocks are important as they define the type of rock and its application. Greywacke and Turbidite belong to Sedimentary Rocks.Texture of Greywacke is Clastic whereas that of Turbidite is Mud-rich, Sandy. Greywacke appears Dull and Turbidite appears Dull and Banded. The luster of Greywacke is dull while that of Turbidite is metallic. Greywacke and Turbidite are available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. The commercial uses of Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones and that of Turbidite are cemetery markers, creating artwork.