Coal and Marl Definition

Definition of Coal and Marl

The general Coal and Marl definition can be stated as: Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers called coal beds. On the other hand, Marl is an unconsolidated sedimentary rock consisting of clay and lime. Along with definition of Coal and Marl, get to know about Properties of Coal and Marl. Get to know more information about Coal and Marl origin and discoverer, etymology and class.

History of Coal and Marl

The history of Coal and Marl gives information about where the rock was found and who was its discoverer. Almost each and every aspect of Earth's history is recorded in rocks be it the volcanoes which were erupted or the plants, animals and organisms which are now extinct, as rocks are present from millions of years.

Coal and Marl Origin and Discoverer

Coal and Marl definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Coal and Marl. In this section, you will know about Coal and Marl Origin and Discoverer. Origin of Coal is USA whereas Origin of Marl is . It is interesting to know the name of Coal and Marl discoverer. The Discoverer of Coal is John Peter Salley and the discoverer of Marl is William Smith.

Etymology of Coal and Marl

Along with Coal and Marl definition, know more about the etymology of Coal and Marl. Etymology of Coal and Marl gives information about origin and formation of a particular rock. Know more about Formation of Coal and Formation of Marl. The etymology of Coal is From the Old English term col, which has meant mineral of fossilized carbon since the 13th century while that of Marl is From the Old English term col, which has meant mineral of fossilized carbon since the 13th century. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Coal and Marl belong to Sedimentary Rocks. The sub-class, group and other categories of Coal and Marl are listed below.

For Coal,

• Sub-class: Durable Rock and Soft Rock
• Group:
• Other Categories: Coarse grained rock, Fine grained rock, Medium grained rock and Opaque rock

For Marl,

• Sub-class: Durable Rock and Soft Rock
• Group:
• Other Categories: Fine grained rock and Opaque rock