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Yabba Creek 19.3M and Amamoor Creek 14.7M Dam sites seismic survey, Queensland 1959

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Created 20/01/2025

Updated 20/01/2025

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This report gives the results of seismic refraction surveys undertaken in response to an application from the Irrigation and Water Supply Commission of Queensland; the areas surveyed are the sites of two dams which are proposed for development of the Mary Valley. At the Yabba Creek 19.3M site the depth to bedrock ranges from 10 to 80 ft. A comparison with diamond drilling information shows that the seismic depth determinations are accurate to within 10 ft. The value of Poisson's ratio calculated from longitudinal and transverse wave velocities is 0.39. Assuming g bedrock density 2.7 g/cm3 the value of Young's modulus is 100000000 lb/in2. At the Amamoor Creek 14.7M site the depth to bedrock ranges from 19 to 108 ft. On the right bank (looking down stream) the calculated depths to bedrock are different when shot parallel and perpendicular to the strike of the strata; the discrepancy is explained by the phenomenon of hillside creep. On the left bank a shear zone is indicated. For the bedrock the value of Young's modulus estimated from an empirical relation ranges from 1.6 to 5.3 x 10000000 lb/in2 .Two positions for test drilling to check and control the seismic interpretation are indicated.

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Title Yabba Creek 19.3M and Amamoor Creek 14.7M Dam sites seismic survey, Queensland 1959
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/85d1105f-bff7-4e25-bc81-798c1f40f293
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage {"type": "Polygon", "coordinates": [[[152.5, -26.5], [153.0, -26.5], [153.0, -26.0], [152.5, -26.0], [152.5, -26.5]]]}
Data Portal data.gov.au

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This dataset was originally found on data.gov.au "Yabba Creek 19.3M and Amamoor Creek 14.7M Dam sites seismic survey, Queensland 1959". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/yabba-creek-19-3m-and-amamoor-creek-14-7m-dam-sites-seismic-survey-queensland-1959