Definition
Arkose is a sedimentary rock, specifically a type of sandstone containing at least 25% feldspar
Oolite is a sedimentary rock formed from ooids, spherical grains which are composed of concentric layers of calcite
History
Origin
France
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Discoverer
Alexandre Brongniart
William Smith
Etymology
From Auvergne region of France used by a French geologist Alexandre Brongniart in 1826 who applied this term to some feldspathic sandstones
From oo- + -lite, after German Oolit. A rock consisting of fine grains of carbonate of lime
Class
Sedimentary Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
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Volcanic
Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock