20.500.12556/RUL-188787 Subdued surface expression of deep cave collapse Cave systems can be difficult to recognise where karst landforms are subdued or overprinted with other landscape processes. Subtle linear depressions on carbonate platforms are commonly interpreted as fluvial or tectonic landforms, but may also mark collapse above underlying cave systems. We test this on the Nullarbor Plain, southern Australia, a stable >200,000 km² carbonate platform exposed for >14 Myr. Integrating morphometrics, electrical resistivity tomography, passive seismic profiling, cave records, cliff exposures and sedimentology, we show that kilometre-scale, shallow, sediment-filled trenches are surface expressions of vertically propagated collapse and sagging above deep cave conduits. These depressions lack integrated drainage, downstream sediment transport and sedimentological evidence of channelised flow; instead, they overlie vertically extensive low-resistivity zones, align with mapped caves and collapse dolines, and project to cliff-face exposed stratal deformation. The Nullarbor trenches provide diagnostic criteria for recognising subdued cave-collapse systems on Earth and an analogue for interpreting linear depressions on other rocky planetary surfaces. geologija geomorfologija brezstrope jame jamski sistemi true false true Angleški jezik Slovenski jezik Članek v reviji 2026-09-28 10:26:27 2026-09-28 10:26:27 2026-09-29 04:06:20 0000-00-00 00:00:00 2026 0 0 10 str. Vol. 7 2026 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 2026-09-17 2026-01-01 55 2662-4435 10.1038/s43247-026-04016-7 291779587 s43247-026-04016-7.pdf s43247-026-04016-7.pdf 1 965D9A9716CFC495A85685775E400A9A 239fb90c9cd3eece39875064ff45de3beda98945cdf4b000b0e3301c38b72b11 a1e97cb4-bb16-11f1-8bc5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=249117 https://www.nature.com/articles/s43247-026-04016-7 0 a95897c1-bb16-11f1-8bc5-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=249118 Naravoslovnotehniška fakulteta Filozofska fakulteta 0 0 0