Types
Nepheline-Basanite, Analcite-Basanite and Leucite-Basanite
Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale
Features
Clasts are smooth to touch, Easily splits into thin plates, Has High structural resistance against erosion and climate, Used as a touchstone
Easily splits into thin plates, Generally rough to touch, Very fine grained rock
Archaeological Significance
Monuments
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Famous Monuments
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Jantar Mantar in India
Sculpture
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Famous Sculptures
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Pictographs
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Petroglyphs
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Figurines
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Fossils
Absent
Present