Marl

Adakite

Marl and Adakite

Marl

Adakite

Add ⊕

Definition

Marl is an unconsolidated sedimentary rock consisting of clay and lime

Adakite is an intermediate to felsic volcanic rock that has geochemical characteristics of magma which is said to be formed by partial melting of altered basalt that is subducted below volcanic arcs

History

Origin

Adak, Aleutian Islands

Discoverer

William Smith

Defant and Drummond

Etymology

From Old French marle, from Late Latin marglia

From Adak, Aleutian Islands

Class

Sedimentary Rocks

Igneous Rocks

Sub-Class

Durable Rock, Soft Rock

Durable Rock, Medium Hardness Rock

Family

Group

Volcanic

Other Categories

Fine Grained Rock, Opaque Rock

Fine Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Earthy

Porphyritic

Color

Beige, Brown, Green, Grey, White

Black, Brown, Light to Dark Grey

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Rough and Dull

Dull and Soft

Uses

Architecture

Interior Uses

Decorative Aggregates, Floor Tiles

Decorative Aggregates, Floor Tiles, Homes, Hotels, Kitchens

Exterior Uses

As Building Stone, Roof Tiles

As Building Stone, As Facing Stone, Office Buildings

Other Architectural Uses

Curbing

Whetstones

Industry

Construction Industry

Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar

As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone

Medical Industry

Antiquity Uses

Artifacts, Jewellery, Sculpture, Small Figurines

Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Creating Artwork, Soil Conditioner

Commemorative Tablets, Pottery, Used in aquariums

Types

Clay Marl ,Blue Marl, Red Marl, High Bank Marl, Shell Layer Marl, Under Shell Layer Marl, Sand Marl, Green Marl, Grey Marl and Clayey Marl

Intermediate volcanic rock

Features

Generally rough to touch, Is one of the oldest rock, Splintery, Very fine grained rock

Has High structural resistance against erosion and climate, Host rock for Diamond, Very fine grained rock

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Present

Absent

Formation

Marl forms when very fine-grained clay particles are deposited in water which settles at the bottom of water bodies and are compacted by overlying sediment; the water squeezes out and hence forming Marl rock.

Adakite rocks are formed when the hydrous fluids are released from minerals that break down in metamorphosed basalt, and rise into the mantle they initiate partial melting.

Composition

Mineral Content

Calcite, Clay, Dolomite, Gypsum, Micas, Pyrite, Quartz

Olivine, Plagioclase, Pyroxene

Compound Content

Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, Silicon Dioxide

Aluminium Oxide, MgO, Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering

Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion

Coastal Erosion, Sea Erosion, Water Erosion

Properties

Physical Properties

Hardness

2-33-4

1 7

👆🏻

Grain Size

Very fine-grained

Fine to Medium Grained

Fracture

Conchoidal

Streak

White

Bluish Black

Porosity

Highly Porous

Less Porous

Luster

Dull

Grainy, Pearly and Vitreous

Compressive Strength

30.00 N/mm²200.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

2.6

Specific Gravity

2.2-2.8-9999

0 8.4

👆🏻

Transparency

Opaque

Density

2.4-2.8 g/cm³-9999 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.80 kJ/Kg K0.84 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant

Heat Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

India, Pakistan, Russia

India, Russia

Africa

Ethiopia, Kenya, Morocco, South Africa

Ethiopia, Somalia, South Africa

Europe

Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland

Iceland

Others

Deposits in Western Continents

North America

USA

Canada, USA

South America

Colombia, Ecuador, Peru

Brazil

Deposits in Oceania Continent

Australia

New South Wales, Victoria, Western Australia

All about Marl and Adakite Properties

Know all about Marl and Adakite properties here. All properties of rocks are important as they define the type of rock and its application. Marl belongs to Sedimentary Rocks while Adakite belongs to Igneous Rocks.Texture of Marl is Earthy whereas that of Adakite is Porphyritic. Marl appears Rough and Dull and Adakite appears Dull and Soft. The luster of Marl is dull while that of Adakite is grainy, pearly and vitreous. Marl is available in beige, brown, green, grey, white colors whereas Adakite is available in black, brown, light to dark grey colors. The commercial uses of Marl are creating artwork, soil conditioner and that of Adakite are commemorative tablets, pottery, used in aquariums.