Authors / CoAuthors
Fraser, G.L. | Waltenberg, K. | Jones, S. L. | Champion, D.C. | Huston, D.L. | Lewis, C.J. | Bodorkos, S. | Forster, M. | Vasegh, D. | Ware, B. | Tessalina, S.
Abstract
Multiple geochronology and isotopic tracer datasets have been compiled at continental scale and visualised in map view. The compiled datasets include Sm-Nd model ages of magmatic rocks; Lu-Hf isotopes from zircon; Pb isotopes from ore-related minerals such as galena and pyrite; U-Pb ages of magmatic, metamorphic and sedimentary rocks; and K-Ar and 40Ar-39Ar ages from minerals and whole rocks. A variety of maps can be derived from these datasets, which we refer to as an Isotopic Atlas of Australia. This ‘atlas’ provides a convenient visual overview of age and isotopic patterns reflecting geological processes that have led to the current configuration of the Australian continent, including progressive development of continental crust from the mantle (Sm-Nd; Lu-Hf), chemical and isotopic evolution in the source regions for mineralising fluids (Pb-Pb), magmatic and high-grade metamorphic reworking of the crust (U-Pb), and cooling and exhumation of the mid-crust (K-Ar; 40Ar-39Ar). These datasets and maps unlock the collective value of several decades of geochronological and isotopic studies conducted across Australia, and provide an important complement to other geological maps and geophysical images—in particular, by adding a time dimension to 2D and 3D maps and models. <b>Citation: </b>Fraser, G.L., Waltenberg,K., Jones, S.L., Champion, D.C., Huston, D.L., Lewis, C.J., Bodorkos, S., Forster, M., Vasegh, D., Ware, B. and Tessalina, S., 2020. An Isotopic Atlas of Australia. 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.
Product Type
document
eCat Id
133772
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
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- theme.ANZRC Fields of Research.rdf
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- EARTH SCIENCES
- ( Project )
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- EFTF
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- Isotopes
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- Geochronology
- ( Project )
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- Exploring For The Future
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- Crust
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- Published_External
Publication Date
2020-06-15T02:31:13
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completed
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EFTF Extended Abstract
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asNeeded
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geoscientificInformation
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This study was completed under the Exploring for the Future initiative. The datasets and maps described here include new geochronology and isotopic data collected as part of the EFTF program, as well as data compiled from pre-existing Geoscience Australia data-holdings and from a wide variety of published geoscience literature. The data and maps are available through the Geoscience Australia Portal (https://portal.ga.gov.au/).
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[-44, -9, 112, 154]
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Association Type - operatedOnBy
Geochronology And Isotopes WMTS
eCat Identifier - 145362,
UUID - 4a1d2745-029a-4fea-a2e0-75a0374667c9
Association Type - operatedOnBy
Geochronology And Isotopes WCS
eCat Identifier - 145363,
UUID - a44fc4d4-5711-4d40-aacf-35c745f1281a
Association Type - operatedOnBy
Geochronology And Isotopes WMS
eCat Identifier - 134341,
UUID - 8fd8a9e2-b5b0-4e7e-bd24-2e8aedac249d
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