Marl and Slate Types and Facts

Marl

Slate

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Types

Features

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Clay Marl ,Blue Marl, Red Marl, High Bank Marl, Shell Layer Marl, Under Shell Layer Marl, Sand Marl, Green Marl, Grey Marl and Clayey Marl

Generally rough to touch, Is one of the oldest rock, Splintery, Very fine grained rock

Present

Phyllite, Schist, and Slate

Easily splits into thin plates, Surfaces are often shiny, Very fine grained rock

Absent

Types of Marl and Slate

Some rocks according to their use or texture are classified into different types. Know more about Marl Texture and Slate Texture. The types of Marl and Slate are .During historic times, some rocks depending on their hardness were used to create Pictographs and Petroglyphs. Rocks which are hard were generally not used. Pictographs are paintings or drawings that have been placed or created on the surface of rock. Marl and Slate were for creating pictographs. Petroglyph is an image which is carved into a rock. These are images created by removing part of a rock surface by incising, picking, carving or abrading, as a form of rock art. Marl and Slate were for creating petroglyphs.