Magnetotelluric soundings and resistivity profiles in the Willyama Complex
| العنوان: | Magnetotelluric soundings and resistivity profiles in the Willyama Complex |
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| المؤلفون: | J. D. Gray, J. P. Cull |
| المصدر: | Australian Journal of Earth Sciences. 37:127-134 |
| بيانات النشر: | Informa UK Limited, 1990. |
| سنة النشر: | 1990 |
| مصطلحات موضوعية: | Precambrian, Basement (geology), Paleozoic, Magnetotellurics, Electrical resistivity and conductivity, Earth and Planetary Sciences (miscellaneous), Partial melting, General Earth and Planetary Sciences, Crust, Ohm, Petrology, Geomorphology, Geology |
| الوصف: | Magnetotelluric data have been obtained over the obscured contact between the Precambrian Willyama Complex and Palaeozoic, Mesozoic and Cainozoic sediments of the Murray‐Darling Basin. Major structural elements can be identified from the resulting resistivity pseudosections for two traverses to the northeast and to the south of Broken Hill. Resistivities exceeding 1000 ohm m are obtained for the Precambrian basement, contrasting with values in the range 1–200 ohm m obtained for the sediments of the Murray‐Darling basin. Two‐dimensional forward modelling suggests a semi‐vertical contact for these units consistent with previous magnetotelluric surveys in the same area. Resistivities of 100 ohm m in the lower crust are attributed to partial melting of hydrated granites at depths of 20–30 km. |
| تدمد: | 1440-0952 0812-0099 |
| DOI: | 10.1080/08120099008727915 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::17be73ba232dbb559350bb37df9e44fc https://doi.org/10.1080/08120099008727915 |
| رقم الانضمام: | edsair.doi...........17be73ba232dbb559350bb37df9e44fc |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14400952 08120099 |
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| DOI: | 10.1080/08120099008727915 |