Question 1

What is ज्वालामुखी शैल (Volcanic Rock)?

Accepted Answer

Jwālāmukhī Shilā (ज्वालामुखी शिला), or Volcanic Rock, encompasses diverse extrusive igneous rocks utilized extensively in Indic heritage architecture [1]. Varied compositions, influenced by volcanic source, yield rocks like basalt and andesite. Physical properties such as density (2.3-3.3 g/cm³) and compressive strength (50-300 MPa) are highly variable. Traditional applications include foundation construction (शिला न्यासः), wall construction (भित्ति निर्माणम्), and paving. Historical usage is documented in structures built during the Sailendra Dynasty and Mataram Kingdom (8th-10th centuries CE) in regions like Java and Sumatra. Traditional quarries (खदान) provided the raw material. Durability depends on porosity, affecting weathering resistance. Conservation considerations involve addressing water ingress and salt efflorescence. Common Indic names include अग्नि पाषाणम् (Agni Pāṣāṇam) and अग्निजन्य शैल (Agnijanya Shaila). Restoration efforts require careful material matching and traditional construction techniques.

Question 2

What type of material is ज्वालामुखी शैल (Volcanic Rock)?

Accepted Answer

ज्वालामुखी शैल (Volcanic Rock) is classified as Extrusive Igneous Rock, Volcanic Rock. Key properties include Density: 2.3-3.3 g/cm³ (variable), Porosity: 0.1-50% (highly variable), Thermal conductivity: 0.8-4 W/mK (variable).

Question 3

Where is ज्वालामुखी शैल (Volcanic Rock) used?

Accepted Answer

ज्वालामुखी शैल (Volcanic Rock) is commonly used in Indonesia, Java, Sumatra. It is sourced from Mount Merapi, Mount Bromo, Volcanic regions of Java.

Question 4

How is ज्वालामुखी शैल (Volcanic Rock) used in heritage architecture?

Accepted Answer

ज्वालामुखी शैल (Volcanic Rock) is used for Foundation construction, Wall construction, Paving, Sculptural elements, Temple construction in heritage architecture. It is found in 1 heritage sites.

Title	ज्वालामुखी शैल (Volcanic Rock) 4.5/5(Based on 1 heritage site) Rare Jvālāmukhī Śaila Volcanic Rock 4.5/5(Based on 1 heritage site)
Description	Jwālāmukhī Shilā (ज्वालामुखी शिला), or Volcanic Rock, encompasses diverse extrusive igneous rocks utilized extensively in Indic heritage architecture [1]. Varied compositions, influenced by volcanic source, yield rocks like basalt and andesite. Physical properties such as density (2.3-3.3 g/cm³) and compressive strength (50-300 MPa) are highly variable. Traditional applications include foundation construction (शिला न्यासः), wall construction (भित्ति निर्माणम्), and paving. Historical usage is documented in structures built during the Sailendra Dynasty and Mataram Kingdom (8th-10th centuries CE) in regions like Java and Sumatra. Traditional quarries (खदान) provided the raw material. Durability depends on porosity, affecting weathering resistance. Conservation considerations involve addressing water ingress and salt efflorescence. Common Indic names include अग्नि पाषाणम् (Agni Pāṣāṇam) and अग्निजन्य शैल (Agnijanya Shaila). Restoration efforts require careful material matching and traditional construction techniques.
Also Known As	Volcanic Rock Jvālāmukhī Śaila Volcanic Rock Igneous Rock Extrusive Rock आग्नेय शैल अग्निजन्य शैल ज्वालामुखी पत्थर अग्नि पाषाणम् கொந்தளிப்பு பாறை (Kontalippu paarai) అగ్ని శిల (Agni shila) ಅಗ್ನಿ ಶಿಲೆ (Agni shile) അഗ്നി ശില (Agni shila)
Tags	Volcanic Rock Igneous Rock Extrusive Rock Java Construction Material
Material ID	`INHFMAT-767442935-20-11-25-JL`
URI	https://www.inheritage.foundation/aat/material/volcanic-rock
API Endpoint	`https://inheritage.foundation/api/v1/aat/materials/volcanic-rock`
Total Sites	1
Primary Sites	0
Created	November 20, 2025
Last Updated	November 28, 2025

Time Periods	8th Century CE 9th Century CE 10th Century CE
Dynasties	Sailendra Dynasty Mataram Kingdom

Title	ज्वालामुखी शैल (Volcanic Rock) 4.5/5(Based on 1 heritage site) Rare Jvālāmukhī Śaila Volcanic Rock 4.5/5(Based on 1 heritage site)
Description	Jwālāmukhī Shilā (ज्वालामुखी शिला), or Volcanic Rock, encompasses diverse extrusive igneous rocks utilized extensively in Indic heritage architecture [1]. Varied compositions, influenced by volcanic source, yield rocks like basalt and andesite. Physical properties such as density (2.3-3.3 g/cm³) and compressive strength (50-300 MPa) are highly variable. Traditional applications include foundation construction (शिला न्यासः), wall construction (भित्ति निर्माणम्), and paving. Historical usage is documented in structures built during the Sailendra Dynasty and Mataram Kingdom (8th-10th centuries CE) in regions like Java and Sumatra. Traditional quarries (खदान) provided the raw material. Durability depends on porosity, affecting weathering resistance. Conservation considerations involve addressing water ingress and salt efflorescence. Common Indic names include अग्नि पाषाणम् (Agni Pāṣāṇam) and अग्निजन्य शैल (Agnijanya Shaila). Restoration efforts require careful material matching and traditional construction techniques.
Also Known As	Volcanic Rock Jvālāmukhī Śaila Volcanic Rock Igneous Rock Extrusive Rock आग्नेय शैल अग्निजन्य शैल ज्वालामुखी पत्थर अग्नि पाषाणम् கொந்தளிப்பு பாறை (Kontalippu paarai) అగ్ని శిల (Agni shila) ಅಗ್ನಿ ಶಿಲೆ (Agni shile) അഗ്നി ശില (Agni shila)
Tags	Volcanic Rock Igneous Rock Extrusive Rock Java Construction Material
Material ID	`INHFMAT-767442935-20-11-25-JL`
URI	https://www.inheritage.foundation/aat/material/volcanic-rock
API Endpoint	`https://inheritage.foundation/api/v1/aat/materials/volcanic-rock`
Total Sites	1
Primary Sites	0
Created	November 20, 2025
Last Updated	November 28, 2025

Time Periods	8th Century CE 9th Century CE 10th Century CE
Dynasties	Sailendra Dynasty Mataram Kingdom

ज्वालामुखी शैल (Volcanic Rock)

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Heritage Sites (1)

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