Slate

Turbidite

Slate and Turbidite

Slate

Turbidite

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Definition

Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism

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

History

Origin

England

European Foreland Basins

Discoverer

Abraham Gottlob Werner

Arnold H. Bouma

Etymology

From Old French esclate, from esclat (French éclat)

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

Class

Metamorphic Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Soft Rock

Family

Group

Other Categories

Fine Grained Rock, Opaque Rock

Coarse Grained Rock, Fine Grained Rock, Opaque Rock

Texture

Foliated

Mud-rich, Sandy

Color

Black, Brown, Buff, Green, Light to Dark Grey, Purple, Red, Shades of Blue

Black, Brown, Green, Grey, Pink

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Dull

Dull and Banded

Uses

Architecture

Interior Uses

Bathrooms, Decorative Aggregates, Entryways, Floor Tiles, Flooring, Homes, Hotels, Interior Decoration, Kitchens, Stair Treads

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

Exterior Uses

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

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

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone

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

Medical Industry

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts, Monuments, Sculpture

Other Uses

Commercial Uses

Blackboards, Commemorative Tablets, Laboratory bench tops, Standard material for the bed of Billiard table, Standard material for the beds of Pool and Snooker table, Tombstones, Used in aquariums, Writing Slates

Cemetery Markers, Creating Artwork

Types

Phyllite, Schist, and Slate

Sedimentary rock

Features

Easily splits into thin plates, Surfaces are often shiny, Very fine grained rock

High silica content, Host Rock for Lead

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Present

Formation

Slate is a low grade metamorphic rock that is generally formed by metamorphosis of mudstone or shale, under relatively low pressure and temperature conditions.

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

Apatite, Biotite, Chlorite, Feldspar, Graphite, Hematite, Kaolinite, Magnetite, Pyrite, Tourmaline, Zircon

Coesite, Quartz, Sand

Compound Content

Aluminium Oxide, CaO, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Titanium Dioxide

CaO, Carbon Dioxide, MgO

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Coastal Erosion, Glacier Erosion, Water Erosion, Wind Erosion

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

Properties

Physical Properties

Hardness

3-43

1 7

👆🏻

Grain Size

Very fine-grained

Fine to Coarse Grained

Fracture

Splintery

Streak

Light to dark brown

White, Greenish White or Grey

Porosity

Less Porous

Very Less Porous

Luster

Dull

Metallic

Compressive Strength

30.00 N/mm²200.00 N/mm²

0.15 450

👆🏻

Cleavage

Slaty

Disjunctive

Toughness

1.2

2.4

Specific Gravity

2.65-2.82.46-2.73

0 8.4

👆🏻

Transparency

Opaque

Density

2.6-2.8 g/cm³1.6-2.5 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.76 kJ/Kg K0.92 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant

Reserves

Deposits in Eastern Continents

Asia

China, India, Turkey

Africa

Western Africa

Europe

Belgium, France, Germany, Italy, Norway, Portugal, Spain, United Kingdom

Austria, Belarus, Romania, Switzerland, United Kingdom

Others

Arctic

Deposits in Western Continents

North America

USA

Canada, USA

South America

Brazil

Brazil, Colombia

Deposits in Oceania Continent

Australia

New Zealand, Western Australia

All about Slate and Turbidite Properties

Know all about Slate and Turbidite properties here. All properties of rocks are important as they define the type of rock and its application. Slate belongs to Metamorphic Rocks while Turbidite belongs to Sedimentary Rocks.Texture of Slate is Foliated whereas that of Turbidite is Mud-rich, Sandy. Slate appears Dull and Turbidite appears Dull and Banded. The luster of Slate is dull while that of Turbidite is metallic. Slate is available in black, brown, buff, green, light to dark grey, purple, red, shades of blue colors whereas Turbidite is available in black, brown, green, grey, pink colors. The commercial uses of Slate are blackboards, commemorative tablets, laboratory bench tops, standard material for the bed of billiard table, standard material for the beds of pool and snooker table, tombstones, used in aquariums, writing slates and that of Turbidite are cemetery markers, creating artwork.