Definition
Marl is an unconsolidated sedimentary rock consisting of clay and lime
Granophyre is a type of granitic rock which consists of intergrown feldspar and quartz crystals in a medium to fine grained groundmass
History
Origin
-
-
Discoverer
William Smith
Unknown
Etymology
From Old French marle, from Late Latin marglia
From German Granophyr, from Granit granite + Porphyr
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Hard Rock
Family
Group
-
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock