Turbidite

Schist

Turbidite and Schist

Turbidite

Schist

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Definition

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

Schist is a medium grade metamorphic rock with medium to large, flat, sheet like grains in a preferred orientation

History

Origin

European Foreland Basins

Discoverer

Arnold H. Bouma

Unknown

Etymology

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

From French schiste, Greek skhistos i.e. split

Class

Sedimentary Rocks

Metamorphic Rocks

Sub-Class

Durable Rock, Soft Rock

Durable Rock, Medium Hardness Rock

Family

Group

Other Categories

Coarse Grained Rock, Fine Grained Rock, Opaque Rock

Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Mud-rich, Sandy

Foliated, Platy

Color

Black, Brown, Green, Grey, Pink

Black, Blue, Brown, Dark Brown, Green, Grey, Silver

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Dull and Banded

Layered and Shiny

Uses

Architecture

Interior Uses

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

Decorative Aggregates, Floor Tiles, Interior Decoration

Exterior Uses

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

Garden Decoration, Paving Stone

Other Architectural Uses

Curbing

Industry

Construction Industry

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

As Dimension Stone, Building houses or walls, Cement Manufacture, for Road Aggregate, Roadstone

Medical Industry

Antiquity Uses

Artifacts, Monuments, Sculpture

Artifacts

Other Uses

Commercial Uses

Cemetery Markers, Creating Artwork

Used in aquariums, Writing Slates

Types

Sedimentary rock

Mica Schists, Calc-Silicate Schists, Graphite Schists, Blueschists, Whiteschists, Greenschists, Hornblende Schist, Talc Schist, Chlorite Schist, Garnet Schist, Glaucophane schist.

Features

High silica content, Host Rock for Lead

Easily splits into thin plates, Smooth to touch

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Present

Absent

Formation

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.

Schist formed by dynamic metamorphism at high temperatures and pressures that aligns the grains of mica, hornblende and other elongated minerals into thin layers.

Composition

Mineral Content

Coesite, Quartz, Sand

Alusite, Amphibole, Biotite, Chlorite, Epidote, Feldspar, Garnet, Graphite, Hornblade, Kyanite, Micas, Muscovite or Illite, Porphyroblasts, Quartz, Sillimanite, Staurolite, Talc

Compound Content

CaO, Carbon Dioxide, MgO

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

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

Chemical Erosion, Coastal Erosion, Glacier Erosion

Properties

Physical Properties

Hardness

33.5-4

1 7

👆🏻

Grain Size

Fine to Coarse Grained

Medium to Fine Coarse Grained

Fracture

Splintery

Conchoidal

Streak

White, Greenish White or Grey

White

Porosity

Very Less Porous

Highly Porous

Luster

Metallic

Shiny

Compressive Strength

200.00 N/mm²150.00 N/mm²

0.15 450

👆🏻

Cleavage

Disjunctive

Slaty

Toughness

2.4

1.5

Specific Gravity

2.46-2.732.5-2.9

0 8.4

👆🏻

Transparency

Opaque

Density

1.6-2.5 g/cm³2.8-2.9 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.92 kJ/Kg K0.70 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant

Impact Resistant, Pressure Resistant, Water Resistant

Reserves

Deposits in Eastern Continents

Asia

Afghanistan, Bangladesh, Bhutan, China, India, Japan, Kazakhstan, Malaysia, Pakistan, Russia, Thailand, Turkey, Vietnam

Africa

Western Africa

Egypt, Ethiopia, Morocco, Nigeria, South Africa

Europe

Austria, Belarus, Romania, Switzerland, United Kingdom

Austria, England, France, Georgia, Germany, Italy, Liechtenstein, Monaco, Norway, Slovenia, Spain, Sweden, Switzerland

Others

Deposits in Western Continents

North America

Canada, USA

Canada, Costa Rica, Cuba, Mexico, Panama, USA

South America

Brazil, Colombia

Brazil, Colombia, Guyana

Deposits in Oceania Continent

Australia

New Zealand, Western Australia

New South Wales, New Zealand, Queensland

All about Turbidite and Schist Properties

Know all about Turbidite and Schist properties here. All properties of rocks are important as they define the type of rock and its application. Turbidite belongs to Sedimentary Rocks while Schist belongs to Metamorphic Rocks.Texture of Turbidite is Mud-rich, Sandy whereas that of Schist is Foliated, Platy. Turbidite appears Dull and Banded and Schist appears Layered and Shiny. The luster of Turbidite is metallic while that of Schist is shiny. Turbidite is available in black, brown, green, grey, pink colors whereas Schist is available in black, blue, brown, dark brown, green, grey, silver colors. The commercial uses of Turbidite are cemetery markers, creating artwork and that of Schist are used in aquariums, writing slates.