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Basalt
Basalt

Porphyry
Porphyry



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Basalt and Porphyry Types and Facts

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1 Types
1.1 Types
Alkaline Basalt, Boninite, High Alumina Basalt, Mid Ocean Ridge Basalt (MORB), Tholeiitic Basalt, Basaltic trachyandesite, Mugearite and Shoshonite
Rhomb Porphyry
1.2 Features
Has High structural resistance against erosion and climate, Very fine grained rock
Generally rough to touch, Is one of the oldest rock, Surfaces are often shiny
1.3 Archaeological Significance
1.3.1 Monuments
Used
Used
1.3.2 Famous Monuments
Easter Island in the Polynesian Triangle, Pacific Ocean, Gateway of India in Mumbai, India, Gol Gumbaz in Karnataka, India
Data Not Available
1.3.3 Sculpture
Used
Used
1.3.4 Famous Sculptures
Data Not Available
Data Not Available
1.3.5 Pictographs
Used
Not Used
1.3.6 Petroglyphs
Used
Not Used
1.3.7 Figurines
Used
Used
1.4 Fossils
Absent
Absent

Types of Basalt and Porphyry

Some rocks according to their use or texture are classified into different types. Know more about Basalt Texture and Porphyry Texture. Types of Basalt are Alkaline Basalt, Boninite, High Alumina Basalt, Mid Ocean Ridge Basalt (MORB), Tholeiitic Basalt, Basaltic trachyandesite, Mugearite and Shoshonite whereas the types of Porphyry are Rhomb Porphyry.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. Basalt was used to create pictographs whereas Porphyry is not used to create 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. Basalt was used to create petroglyphs whereas Porphyry was not used to create petroglyphs.