Definition
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.
A sedimentary rock, deposit of a submarine turbidity currents and are composed of layered particles
History
Origin
USA
European Foreland Basins
Discoverer
Unknown
Arnold H. Bouma
Etymology
From pseudo- + tachylite, a glassy rock generated by frictional heat within faults.
From Medieval Latin turbiditas, from Latin turbidus (turbid). Turbidity current is from 1939
Class
Metamorphic Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Soft Rock
Family
Group
-
-
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Opaque Rock