Definition
Eclogite is an extreme metamorphic rock, formed by regional metamorphism of basalt rock under very high pressure and temperature
Marl is an unconsolidated sedimentary rock consisting of clay and lime
History
Origin
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Discoverer
René Just Haüy
William Smith
Etymology
From French, Greek eklogē selection with reference to the selective content of the rock + -ite1
From Old French marle, from Late Latin marglia
Class
Metamorphic Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock
Family
Group
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Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock