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Halls and Narrows: Network caves in dipping limestone, examples from eastern Australia

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Author(s): Osborne, R.A.L.

Journal: Speleogenesis and Evolution of Karst Aquifers
ISSN 1814-294X

Volume: 1;
Issue: 2;
Start page: 18;
Original page

Keywords: speleogenesis | cave morphology | network caves

ABSTRACT
Structurally guided network caves formed in limestones dipping at greater than approximately thirty degrees differ in plan and section from maze caves developed in horizontal to gently dipping limestone. These caves are characterised by the development of large elongate cavities oriented along strike called halls and smaller, short cavities oriented perpendicular to strike called narrows. Halls typically terminate blindly along strike. A range of hall and narrows development is recognised, resulting from increases in dip and differing disposition of joints. Entrances to hall and narrows caves appear to have little genetic relationship to the caves. Hall and narrows caves are common in the steeply dipping Palaeozoic limestones of eastern Australia. While the origin of these caves has yet to be completely explained, many of their features suggest that hydrothermal or artesian water had a role in their development.
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