Alternative Title

Nowranie caves and the Camooweal karst area, Queensland: hydrology, geomorphology and speleogenesis, with notes on aquatic biota

Creator

Stefan Eberhard

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Publisher

Subterranean Ecology, Scientific Environmental Services

Publication Date

January 2003

Keywords

Australia, Biology, Cave Ecology

Description

Development of the Nowranie Caves includes both phreatic and vadoese components, with prominent influences on cave geomorphology exerted by joints, bedding the past changes in watertable levels. Active circulation is occurring within a phreatic conduit at moderate depth (22-30 m) below the level of the present watertable. Slugs of flood water can penetrate well into the flooded section of the cave, and it appears that dissolutional enlargement of the conduit may be occurring under present conditions. Speleogensis in Nowranie Caves incorporates deeper phreatic processes in addition to shallow phreatic (i.e. watertables) processes. A series of three fossil, of occasionally re-flooded, phreatic horizontal levels in the Nowranie Caves correspond with similar levels in other Camooweal caves, and reflect a regional pattern and multi stage history watertable changes linked with cave development. The stacked series of cave levels may reflect episodic uplift, wetter climate episodes, or a combination of both - possibly dating form early to mid Tertiary times. Caves and dolines are the major points for groundwater recharge in the Camooweal area, and these are susceptible points for injection of contaminants into the groundwater system. A climatic and distributional relict, and locally endemic, fauna is present in the groundwater. The Nowranie Caves, and Camooweal area generally, has conservation significance as a karst hydrogeological and ecological system that has preserved a history of regional landscape and faunal evolution in northern Australia during the Quatermary. -- Authors Open Access - Permission by Publisher See Extended description for more information.

Subject: topical

Biology; Cave Ecology

Subject: geographic

Australia

Type

Article

Genre

Article; serial

Identifier

K26-02295

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