block lava: meaning, definition, pronunciation and examples
Rare / C2Technical / Academic
Quick answer
What does “block lava” mean?
A type of lava flow with a rough, clinkery surface composed of broken, angular blocks.
Audio
Pronunciation
Definition
Meaning and Definition
A type of lava flow with a rough, clinkery surface composed of broken, angular blocks.
A geological term describing a lava flow whose surface breaks apart as it moves and cools, forming a chaotic terrain of jagged, angular chunks. This contrasts with smoother, ropey 'pahoehoe' lava.
Dialectal Variation
British vs American Usage
Differences
No significant spelling or usage differences. Pronunciations may follow national patterns for the component words.
Connotations
Purely technical, scientific connotations in both varieties.
Frequency
Used with equal rarity in geological contexts in both the UK and US.
Grammar
How to Use “block lava” in a Sentence
The [volcano] erupted [block lava][Block lava] forms [a rough surface]to be composed of [block lava]Vocabulary
Collocations
Examples
Examples of “block lava” in a Sentence
adjective
British English
- The block-lava flow advanced slowly down the mountainside.
American English
- They studied the block-lava fields from the 1980 eruption.
Usage
Meaning in Context
Business
Not applicable.
Academic
Primary context. Used in geology, volcanology, and earth science papers and textbooks to classify lava flow morphology.
Everyday
Virtually never used unless discussing specific volcanic features.
Technical
The exclusive context. Precise term for a specific volcanic rock formation.
Vocabulary
Synonyms of “block lava”
Vocabulary
Antonyms of “block lava”
Watch out
Common Mistakes When Using “block lava”
- Mispronouncing 'lava' as /ˈlæ.və/ instead of /ˈlɑː.və/.
- Confusing it with 'lava block' (a construction material).
- Using it as a general term for any rough lava instead of the specific morphological type.
FAQ
Frequently Asked Questions
They are closely related. 'Aa' is a Hawaiian term for a specific, spiny type of block lava. All aa is block lava, but not all block lava is classified as aa; the term can be broader.
It is extremely difficult and dangerous. The surface is unstable, composed of loose, sharp, and often fragile blocks that can shift or break underfoot, causing serious injury.
It is typically associated with more viscous (less runny), silica-rich lava (like andesite or dacite). As the viscous flow moves, its cooled, brittle crust fractures into angular blocks which are carried atop the still-moving interior.
No, it is a highly specialised term. In everyday conversation, people would simply say 'rough lava' or 'jagged lava rock'.
A type of lava flow with a rough, clinkery surface composed of broken, angular blocks.
Block lava is usually technical / academic in register.
Block lava: in British English it is pronounced /ˌblɒk ˈlɑː.və/, and in American English it is pronounced /ˌblɑːk ˈlɑː.və/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of a city BLOCK broken apart by an earthquake, then imagine it made of molten rock that cooled into those jagged, angular pieces – that's BLOCK LAVA.
Conceptual Metaphor
SOLID OBJECTS (BLOCKS, RUBBLE) FOR A FLUID SUBSTANCE
Practice
Quiz
What is the primary characteristic of block lava?