Marl

Oil shale

Marl vs Oil shale

Marl

Oil shale

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Definition

Marl is an unconsolidated sedimentary rock consisting of clay and lime

Oil Shale is a fine-grained sedimentary rock from which oil is extracted

History

Origin

Discoverer

William Smith

Unknown

Etymology

From Old French marle, from Late Latin marglia

From Old English scealu in its base sense of thing that divides or separate

Class

Sedimentary Rocks

Sub-Class

Durable Rock, Soft Rock

Family

Group

Other Categories

Fine Grained Rock, Opaque Rock

Texture

Earthy

Splintery

Color

Beige, Brown, Green, Grey, White

Black, Brown, Buff, Green, Grey, Red, Yellow

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Rough and Dull

Muddy

Uses

Architecture

Interior Uses

Decorative Aggregates, Floor Tiles

Exterior Uses

As Building Stone, Roof Tiles

Other Architectural Uses

Curbing

Industry

Construction Industry

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

Cement Manufacture, Construction Aggregate, for Road Aggregate, Serves as an Oil and Gas Reservoir rock

Medical Industry

Antiquity Uses

Artifacts, Jewellery, Sculpture, Small Figurines

Artifacts

Other Uses

Commercial Uses

Creating Artwork, Soil Conditioner

An Oil and Gas Reservoir

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

Carbonate-rich Shale, Siliceous Shale and Cannel Shale

Features

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

Easily splits into thin plates, Generally rough to touch, Is one of the oldest rock, Very fine grained rock

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Present

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.

Oil Shale forms on the beds of seas and lakes and its formation starts with the organic debris settling and accumulating at the bottom of a lake or sea which are then transformed into rock with the help of high temperature and pressure.

Composition

Mineral Content

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

Albite, Biotite, Calcite, Chert, Chlorite, Dolomite, Hematite, Micas, Muscovite or Illite, Pyrite, Quartz, Silica, Sulfides

Compound Content

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

Ca, Fe, Mg, Silicon Dioxide, Sodium

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion

Chemical Erosion, Sea Erosion, Water Erosion

Properties

Physical Properties

Hardness

2-32-3

1 7

👆🏻

Grain Size

Very fine-grained

Fracture

Conchoidal

Streak

White

Porosity

Highly Porous

Luster

Dull

Compressive Strength

30.00 N/mm²-

0.15 450

👆🏻

Cleavage

Slaty

Toughness

2.6

Specific Gravity

2.2-2.82.2-2.8

0 8.4

👆🏻

Transparency

Opaque

Density

2.4-2.8 g/cm³2.4-2.8 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.80 kJ/Kg K0.39 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant

Reserves

Deposits in Eastern Continents

Asia

India, Pakistan, Russia

Bangladesh, China, India, Israel, Jordan, Russia, Syria, Thailand, Turkey

Africa

Ethiopia, Kenya, Morocco, South Africa

Ethiopia, Kenya, Morocco, South Africa, Tanzania

Europe

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

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

Others

Greenland

Deposits in Western Continents

North America

USA

Canada, USA

South America

Colombia, Ecuador, Peru

Bolivia, Brazil, Chile, Colombia, Ecuador, Peru, Venezuela

Deposits in Oceania Continent

Australia

New South Wales, Victoria, Western Australia

New South Wales, New Zealand, Queensland, Victoria, Western Australia

Marl vs Oil shale Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Marl and Oil shale Reserves. Marl is an unconsolidated sedimentary rock consisting of clay and lime. Oil Shale is a fine-grained sedimentary rock from which oil is extracted. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Marl vs Oil shale information and Marl vs Oil shale characteristics in the upcoming sections.

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Marl vs Oil shale Characteristics

Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Marl vs Oil shale characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Marl and Properties of Oil shale. Learn more about Marl vs Oil shale in the next section. The interior uses of Marl include Decorative aggregates and Floor tiles whereas the interior uses of Oil shale include . Due to some exceptional properties of Marl and Oil shale, they have various applications in construction industry. The uses of Marl in construction industry include Cement manufacture, Construction aggregate, For road aggregate, Making natural cement, Raw material for the manufacture of mortar and that of Oil shale include Cement manufacture, Construction aggregate, For road aggregate, Serves as an oil and gas reservoir rock.

More about Marl and Oil shale

Here you can know more about Marl and Oil shale. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Marl and Oil shale consists of mineral content and compound content. The mineral content of Marl includes Calcite, Clay, Dolomite, Gypsum, Micas, Pyrite, Quartz and mineral content of Oil shale includes Albite, Biotite, Calcite, Chert, Chlorite, Dolomite, Hematite, Micas, Muscovite or Illite, Pyrite, Quartz, Silica, Sulfides. You can also check out the list of all Sedimentary Rocks. When we have to compare Marl vs Oil shale, the texture, color and appearance plays an important role in determining the type of rock. Marl is available in beige, brown, green, grey, white colors whereas, Oil shale is available in black, brown, buff, green, grey, red, yellow colors. Appearance of Marl is Rough and Dull and that of Oil shale is Muddy. Properties of rock is another aspect for Marl vs Oil shale. Hardness of Marl and Oil shale is 2-3. The types of Marl are 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 whereas types of Oil shale are Carbonate-rich Shale, Siliceous Shale and Cannel Shale. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Marl and Oil shale is white. The specific heat capacity of Marl is 0.80 kJ/Kg K and that of Oil shale is 0.39 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Marl is heat resistant, impact resistant whereas Oil shale is heat resistant, impact resistant.