dbad0a7a-d70b-42b4-b937-c6b68b26e848 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-10-16T16:58:26 creation ISO 19115 2016 AusArray: Imaging the lithospheric mantle using body-wave tomography dbad0a7a-d70b-42b4-b937-c6b68b26e848 Mineral deposits are the products of lithospheric-scale processes. Imaging the structure and composition of the lithosphere is therefore essential to better understand these systems, and to efficiently target mineral exploration. Seismic techniques have unique sensitivity to velocity variations in the lithosphere and mantle, and are therefore the primary means available for imaging these structures. Here, we present the first stage of Geoscience Australia's passive seismic imaging project (AusArray), developed in the Exploring for the Future program. This includes generation of compressional (P) and shear (S) body-wave tomographic imaging models. Our results, on a continental scale, are broadly consistent with a priori expectations for regional lithospheric structure and the results of previously published studies. However, we also demonstrate the ability to resolve detailed features of the Australian lithospheric mantle underneath the dense seismic deployments of AusArray. Contrasting P- and S-wave velocity trends within the Tennant Creek – Mount Isa region suggest that the lithospheric root may have undergone melt-related alteration. This complements other studies, which point towards high prospectivity for iron oxide–copper–gold mineralisation in the region. Citation: Haynes, M.W., Gorbatov, A., Hejrani, B., Hassan, R., Zhao, J., Zhang, F. and Reading, A.M., 2020. AusArray: imaging the lithospheric mantle using body-wave tomography. In: Czarnota, K., Roach, I., Abbott, S., Haynes, M., Kositcin, N., Ray, A. and Slatter, E. (eds.) Exploring for the Future: Extended Abstracts, Geoscience Australia, Canberra, 1–4. {"type": "Polygon", "coordinates": [[[60.0, -66.0], [180.0, -66.0], [180.0, 10.0], [60.0, 10.0], [60.0, -66.0]]]} 60.0 180.0 -66.0 10.0 AusARRAY EARTH SCIENCES EFTF Exploring for the Future Geophysical Inversion Mantle Published_External lithospheric mantle mineral systems seismic tomography Extended Abstract for download (pdf) [2.9MB] documentDigital Extended Abstract for download (pdf) [2.9MB] PDF