Chert and Marl Types and Facts

Chert

Marl

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Types

Features

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Flint, Jasper, Radiolarite, Common Chert, Chalcedony, Agate, Onyx, Opal, Magadi-type Chert, Porcelanite, Siliceous Sinter

Clasts are smooth to touch, Easily splits into thin plates, Has High structural resistance against erosion and climate

Present

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

Types of Chert and Marl

Some rocks according to their use or texture are classified into different types. Know more about Chert Texture and Marl Texture. The types of Chert and Marl 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. Chert and Marl 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. Chert and Marl were for creating petroglyphs.