Construct · 1 fields · 1 citations

pahoehoe: a standalone construct

One name. One construct. A landmark on the map.

● anchor · one field, one construct Nearest construct by meaning·not indexed
pahoehoe1 CONSTRUCTPahoehoeMACDONALD · ROPY LAVA

A single standalone construct; nearby constructs are located against it in the Collider. Tap a field for its definition, unit, and measures.

Volcanology

Smooth, ropy basaltic lava

Pahoehoe is a basaltic lava flow with a smooth, billowy, or ropy skin, formed when fluid, low-viscosity, relatively gas-poor lava advances under a flexible chilled crust, often spreading as toes and lobes. Macdonald's 1953 comparison of pahoehoe, aa, and block lava fixed the distinction: pahoehoe's unbroken ropy surface contrasts with the rubbly, clinkery top of aa, into which pahoehoe can transform as it cools and is stirred. The referent is a lava-surface morphology tied to flow rheology and strain rate, a different surface type from aa and block lava.[1]

Unit
The surface morphology of a basaltic flow and the flow conditions that produce it
Recovery means
Not applicable
Measured by
Identified by ropy or billowy surface texture, flow-lobe and toe structures, and the rheology and strain rate at emplacement

Next

Run it through the Collider, or take the citations with you.

See how pahoehoe sits against neighbouring constructs in the Collider, or export every reference on this page in one click.

Open in ColliderExport BibTeXReport this entry

Nearby constructs

block3 fields · 6 citationsjingle · one word, three constructsflow6 names · 12 citationsjangle · five names, one experience, partly

References

  1. Macdonald, G. A. (1953). Pahoehoe, aa, and block lava. American Journal of Science, 251(3), 169–191. https://doi.org/10.2475/ajs.251.3.169

Cited on this page?

Confirm your construct, or correct us.

If your work is cited behind one of these entries, you know better than we do whether we captured the meaning right. Confirm it, suggest an edit, or dispute it, and your name goes on the entry as an author who has checked it, linked to your ORCID.

Claim your construct