Turbidite

Tephrite

Turbidite and Tephrite

Turbidite

Tephrite

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Definition

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

Tephrite is an aphanitic to porphyritic textured, volcanic igneous rock

History

Origin

European Foreland Basins

Germany

Discoverer

Arnold H. Bouma

Van Tooren

Etymology

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

From Greek tephra, ashes from Indo-European base, to burn

Class

Sedimentary Rocks

Igneous Rocks

Sub-Class

Durable Rock, Soft Rock

Durable Rock, Hard Rock

Family

Group

Volcanic

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

Aphanitic to Porphyritic

Color

Black, Brown, Green, Grey, Pink

Black, Brown, Green, Grey, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Dull and Banded

Vesicular

Uses

Architecture

Interior Uses

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

Decorative Aggregates, Flooring, Homes, Interior Decoration

Exterior Uses

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

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

Other Architectural Uses

Curbing

Industry

Construction Industry

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

Landscaping

Medical Industry

Antiquity Uses

Artifacts, Monuments, Sculpture

Artifacts, Sculpture

Other Uses

Commercial Uses

Cemetery Markers, Creating Artwork

Production of Lime, Soil Conditioner

Types

Sedimentary rock

Igneous rock

Features

High silica content, Host Rock for Lead

Host Rock for Lead

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.

Tephrite is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.

Composition

Mineral Content

Coesite, Quartz, Sand

Alkali feldspar, Nepheline, Plagioclase, Pyroxene

Compound Content

CaO, Carbon Dioxide, MgO

CaO, Carbon Dioxide, MgO, Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional 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, Sea Erosion, Water Erosion

Properties

Physical Properties

Hardness

36.5

1 7

👆🏻

Grain Size

Fine to Coarse Grained

Medium to Fine Coarse Grained

Fracture

Splintery

Uneven

Streak

White, Greenish White or Grey

Bluish Black

Porosity

Very Less Porous

Luster

Metallic

Subvitreous to Dull

Compressive Strength

200.00 N/mm²90.00 N/mm²

0.15 450

👆🏻

Cleavage

Disjunctive

Crenulation and Pervasive

Toughness

2.4

Specific Gravity

2.46-2.732.86

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 K0.92 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant

Heat Resistant, Impact Resistant

Reserves

Deposits in Eastern Continents

Asia

Africa

Western Africa

Namibia, Uganda

Europe

Austria, Belarus, Romania, Switzerland, United Kingdom

Germany, Hungary, Italy, Portugal, Spain

Others

Deposits in Western Continents

North America

Canada, USA

USA

South America

Brazil, Colombia

Deposits in Oceania Continent

Australia

New Zealand, Western Australia

All about Turbidite and Tephrite Properties

Know all about Turbidite and Tephrite properties here. All properties of rocks are important as they define the type of rock and its application. Turbidite belongs to Sedimentary Rocks while Tephrite belongs to Igneous Rocks.Texture of Turbidite is Mud-rich, Sandy whereas that of Tephrite is Aphanitic to Porphyritic. Turbidite appears Dull and Banded and Tephrite appears Vesicular. The luster of Turbidite is metallic while that of Tephrite is subvitreous to dull. Turbidite is available in black, brown, green, grey, pink colors whereas Tephrite is available in black, brown, green, grey, white colors. The commercial uses of Turbidite are cemetery markers, creating artwork and that of Tephrite are production of lime, soil conditioner.