Definition
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.
Oolite is a sedimentary rock formed from ooids, spherical grains which are composed of concentric layers of calcite
History
Origin
USA
-
Discoverer
Unknown
William Smith
Etymology
From pseudo- + tachylite, a glassy rock generated by frictional heat within faults.
From oo- + -lite, after German Oolit. A rock consisting of fine grains of carbonate of lime
Class
Metamorphic Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
-
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock