Shale and Dacite Definition

Definition of Shale and Dacite

The general Shale and Dacite definition can be stated as: Shale is a fine-grained sedimentary rock which is formed by the compaction of silt and clay-size mineral particles. On the other hand, Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite. Along with definition of Shale and Dacite, get to know about Properties of Shale and Dacite. Get to know more information about Shale and Dacite origin and discoverer, etymology and class.

History of Shale and Dacite

The history of Shale and Dacite 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.

Shale and Dacite Origin and Discoverer

Shale and Dacite definition gives us a brief idea about the two rocks. In some cases, the definition also gives summary about the Formation of Shale and Dacite. In this section, you will know about Shale and Dacite Origin and Discoverer. Origin of Shale is whereas Origin of Dacite is Romania and Moldova, Europe. It is interesting to know the name of Shale and Dacite discoverer. The Discoverer of Shale is Johann Gottlob Lehmann and the discoverer of Dacite is Unknown.

Etymology of Shale and Dacite

Along with Shale and Dacite definition, know more about the etymology of Shale and Dacite. Etymology of Shale and Dacite gives information about origin and formation of a particular rock. Know more about Formation of Shale and Formation of Dacite. The etymology of Shale is From German Schalstein laminated limestone, and Schalgebirge layer of stone in stratified rock. From Old English scealu in its base sense of- thing that divides or separate, while that of Dacite is From German Schalstein laminated limestone, and Schalgebirge layer of stone in stratified rock. From Old English scealu in its base sense of- thing that divides or separate,. The process of formation of rocks defines the class of rock. All the rocks in a class are formed by similar processes. Shale belongs to Sedimentary Rocks while Dacite belongs to Igneous Rocks. The sub-class, group and other categories of Shale and Dacite are listed below.

For Shale,

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

For Dacite,

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