Journal of Cave and Karst Studies - ISSN 0146-9517
Volume 60 Number 3: 131-140 -December 1998

A publication of the National Speleological Society

Tubular Lava Stalactites and Other Related Segregations
Kevin Allred and Carlene Allred

Abstract

Tubular lava stalactites are found in many lava tubes. Field observations, sample analysis, and comparative studies indicate that these are segregations extruded during cooling from partially crystallized lava at about 1,070° to 1,000°C. Retrograde boiling within the lava creates a vuggy fabric and provides a mechanism to expel the interstitial liquid. In addition to tubular lava stalactites, a variety of other lava formations can also result.

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