1 Definition
1.1 Definition
Shale is a fine-grained sedimentary rock which is formed by the compaction of silt and clay-size mineral particles
A sedimentary rock, deposit of a submarine turbidity currents and are composed of layered particles
1.2 History
1.2.1 Origin
Unknown
European Foreland Basins
1.2.2 Discoverer
1.3 Etymology
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,
From Medieval Latin turbiditas, from Latin turbidus (turbid). Turbidity current is from 1939
1.4 Class
Sedimentary Rocks
Sedimentary Rocks
1.4.1 Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock
1.5 Family
1.5.1 Group
Not Applicable
Not Applicable
1.6 Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Opaque Rock