Coquina

Turbidite

Coquina and Turbidite

Coquina

Turbidite

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Definition

Coquina is a sedimentary rock that is composed either wholly or almost entirely of the transported, abraded, and mechanically-sorted fragments of the shells of molluscs, trilobites, brachiopods, or other invertebrates

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

History

Origin

European Foreland Basins

Discoverer

Unknown

Arnold H. Bouma

Etymology

From Concha (Latin)+ Coquina(Spanish) +conch(English)= Couquina (mid 19th century)

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

Class

Sedimentary Rocks

Sub-Class

Durable Rock, Soft Rock

Family

Group

Not Applicable

Other Categories

Coarse Grained Rock, Opaque Rock

Coarse Grained Rock, Fine Grained Rock, Opaque Rock

Texture

Clastic

Mud-rich, Sandy

Color

Beige, Buff, Orange

Black, Brown, Green, Grey, Pink

Maintenance

Less

Durability

Non-Durable

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Layered, Banded, Veined and Shiny

Dull and Banded

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes, Hotels, Interior Decoration

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

Exterior Uses

Garden Decoration, Office Buildings

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

Other Architectural Uses

Curbing

Industry

Construction Industry

Building houses or walls, Construction Aggregate

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

Medical Industry

Not Available

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts, Monuments, Sculpture

Other Uses

Commercial Uses

Creating Artwork

Cemetery Markers, Creating Artwork

Types

-9999

Features

Available in Lots of Colors and Patterns, Is one of the oldest rock

High silica content, Host Rock for Lead

Archaeological Significance

Monuments

Used

Famous Monuments

Not Available

Sculpture

Used

Famous Sculptures

Not Available

Pictographs

Used

Petroglyphs

Used

Figurines

Used

Fossils

Present

Formation

Coquina is a sedimentary rock which is formed when billions of small clam-like seashell, called Coquina, or cockleshell are die and hence are deposited, buried and turns into a rock when pressure is applied.

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, Augite, Bronzite, Calcite, Chert, Chlorite, Clay Minerals, Epidote, Feldspar, Garnet, Micas, Muscovite or Illite

Coesite, Quartz, Sand

Compound Content

CaO, Carbon Dioxide, Iron(III) Oxide, MgO

CaO, Carbon Dioxide, MgO

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Not Applicable

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Coastal Erosion, Sea Erosion, Water Erosion, Wind Erosion

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

Properties

Physical Properties

Hardness

1-23

1 7

👆🏻

Grain Size

Coarse Grained

Fine to Coarse Grained

Fracture

Irregular

Splintery

Streak

White

White, Greenish White or Grey

Porosity

Highly Porous

Very Less Porous

Luster

Dull to Vitreous to Submetallic

Metallic

Compressive Strength

NA200.00 N/mm²

0.15 450

👆🏻

Cleavage

Not Available

Disjunctive

Toughness

Not Available

2.4

Specific Gravity

1.10-2.242.46-2.73

0 8.4

👆🏻

Transparency

Opaque

Density

2.8-2.9 g/cm³1.6-2.5 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

NA0.92 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant

Reserves

Deposits in Eastern Continents

Asia

Not Available

Africa

Not Available

Western Africa

Europe

United Kingdom

Austria, Belarus, Romania, Switzerland, United Kingdom

Others

Not Available

Deposits in Western Continents

North America

USA

Canada, USA

South America

Not Available

Brazil, Colombia

Deposits in Oceania Continent

Australia

Not Available

New Zealand, Western Australia

All about Coquina and Turbidite Properties

Know all about Coquina and Turbidite properties here. All properties of rocks are important as they define the type of rock and its application. Coquina and Turbidite belong to Sedimentary Rocks.Texture of Coquina is Clastic whereas that of Turbidite is Mud-rich, Sandy. Coquina appears Layered, Banded, Veined and Shiny and Turbidite appears Dull and Banded. The luster of Coquina is dull to vitreous to submetallic while that of Turbidite is metallic. Coquina is available in beige, buff, orange colors whereas Turbidite is available in black, brown, green, grey, pink colors. The commercial uses of Coquina are creating artwork and that of Turbidite are cemetery markers, creating artwork.