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37 results for “Northwest shelf of Australia”
Seismic acquisition parameters to improve imaging beneath mafic igneous units: Case study from Australia's Northwest Shelf; supplementary material
<p>This dataset comprises two supplementary materials. Supplementary Materials A includes seismic processing workflows conducted by industry on the seismic lines used in this study. The seismic processing workflows are not the property of the author but are publicly available on the NOPIMS and WAPIMS databases. Collating these workflows into supplementary materials provides a simple method for readers to access material important for this research paper. Supplementary Materials B is a collection of 2D seismic lines the author conducted stratigraphic horizon mapping on for this study as viewed in 3D. More details on this dataset can be found throughout the research paper "Seismic acquisition parameters to improve imaging beneath mafic igneous units: Case study from Australia’s Northwest Shelf".</p>
Geophysical and geochemical evidence for a new mafic magmatic province within the Northwest Shelf of Australia: Supplementary material
<p>Buried magmatic provinces are rarely identified and difficult to classify. The Northwest Shelf of Australia contains large volumes of potentially interconnected mafic igneous material across several sedimentary basins. However, limited study and a lack of surface exposure have prevented detailed description and classification of these rocks. In this study, the distribution and composition of these mafic igneous rocks is described using an integrated geophysical and geochemical approach, which included over 10,000 km of 2D historical seismic data, well log data and chemical analysis of samples from 14 wells across the Browse, Roebuck, Canning and North Carnarvon basins. Using this combined dataset, we demonstrate interconnectivity of buried mafic igneous rocks across the Northwest Shelf and calculate for these mafic rocks a total surface area exceeding 280,000 km<sup>2</sup> and a cumulative minimum volume of ~140,000 km<sup>3</sup>. Petrology and geochemistry of samples indicate they are basaltic and doleritic with alkaline and sub-alkaline compositions and formed in a continental rift setting. Collectively, the igneous rocks meet the criteria for classification as a mafic magmatic province (MMP) and closely match the criteria required for classification as a large igneous province (LIP). The interconnected mafic igneous rocks found across the Northwest Shelf of Australia are here formally defined as an MMP. Emplacement of the Northwest Shelf MMP may represent hotspot magmatism that could have initiated rifting of the Cimmerian Block from NW Australia near the end Permian, and may have broad implications for petroleum prospectivity, CO<sub>2</sub> sequestration and new resource opportunities in the Northwest Shelf.</p>
FIGURE 32 in The sponge crabs of Western Australia and the Northwest Shelf with descriptions of new genera and species (Crustacea: Brachyura: Dromiidae)
FIGURE 32. Stimdromia lateralis (Gray 1831), male, 17.0 × 15.0 mm (WAM 65-83): A, dorsal view; B, ventral view (with sponge cap); C, frontal view; D, ventral view oral and sternal areas.
FIGURE 25 in The sponge crabs of Western Australia and the Northwest Shelf with descriptions of new genera and species (Crustacea: Brachyura: Dromiidae)
FIGURE 25. Lamarckdromia beagle sp. nov., holotype male, 40.5 × 39.0 mm (WAM C15512): A, dorsal view; B, frontal view; C, fronto-ventral view.
FIGURE 29 in The sponge crabs of Western Australia and the Northwest Shelf with descriptions of new genera and species (Crustacea: Brachyura: Dromiidae)
FIGURE 29. Metadromia wilsoni (Fulton & Grant, (1902), male, 12.8 × 10.0 mm (WAM C17399): A, dorsal view; B, frontal aspect; C, frontal view; D, ventral view.
FIGURE 16 in The sponge crabs of Western Australia and the Northwest Shelf with descriptions of new genera and species (Crustacea: Brachyura: Dromiidae)
FIGURE 16. Epigodromia areolata (Ihle, 1913), male, 16.0 × 14.0 mm (WAM-C50514): A, dorsal view; B, frontal view; C, ventral view.
FIGURE 12. Cryptodromia pileifera Alcock, 1901, male 12.0 in The sponge crabs of Western Australia and the Northwest Shelf with descriptions of new genera and species (Crustacea: Brachyura: Dromiidae)
FIGURE 12. Cryptodromia pileifera Alcock, 1901, male 12.0 × 11.0 mm (WAM 92-83): A, lateral view; B, lateral-frontal view; C, fronto-lateral view.
FIGURE 15 in The sponge crabs of Western Australia and the Northwest Shelf with descriptions of new genera and species (Crustacea: Brachyura: Dromiidae)
FIGURE 15. Epigodromia areolata (Ihle, 1913), ovigerous female, 10.6 × 10.7 mm (WAM-C50514): A, dorsal view; B, frontal view; C, ventral view.
FIGURE 11. Cryptodromia pileifera Alcock, 1901 in The sponge crabs of Western Australia and the Northwest Shelf with descriptions of new genera and species (Crustacea: Brachyura: Dromiidae)
FIGURE 11. Cryptodromia pileifera Alcock, 1901, male with sponge cap, 12.0 × 11.0 mm (WAM 92-83): A, dorsal view; B, frontal view; C, ventral view, D, frontal view.
FIGURE 17. Epigodromia rotunda McLay, 1993, male 8.8 in The sponge crabs of Western Australia and the Northwest Shelf with descriptions of new genera and species (Crustacea: Brachyura: Dromiidae)
FIGURE 17. Epigodromia rotunda McLay, 1993, male 8.8 × 8.5 mm (WAM 101-83): A, dorsal view; B, ventral view; C, lateral view; D, frontal view.
FIGURE 7 in The sponge crabs of Western Australia and the Northwest Shelf with descriptions of new genera and species (Crustacea: Brachyura: Dromiidae)
FIGURE 7. Austrodromidia octodentata (Haswell, 1882), dried male, 91.3 × 74.9 mm (WAM C65-1950): A, dorsal view; B, frontal view; C, ventral.
FIGURE 4 in The sponge crabs of Western Australia and the Northwest Shelf with descriptions of new genera and species (Crustacea: Brachyura: Dromiidae)
FIGURE 4. Austrodromidia octodentata (Haswell, 1882), male 10.6 × 10.8 mm (WAM C43229) carrying sponge cap: A, frontal view; B, ventral view.
FIGURE 9 in The sponge crabs of Western Australia and the Northwest Shelf with descriptions of new genera and species (Crustacea: Brachyura: Dromiidae)
FIGURE 9. Baccadromia bullifera (Alcock, 1900), male 7.7 × 8.2 mm (WAM C42521): A, facial details showing arrangement of pearl-like tubercles; B, cheliped ventral view showing details of prominent tubercles; C, dorsal view of cheliped, rostrum and anterolateral margin showing details.
FIGURE 6 in The sponge crabs of Western Australia and the Northwest Shelf with descriptions of new genera and species (Crustacea: Brachyura: Dromiidae)
FIGURE 6. Austrodromidia octodentata (Haswell, 1882): A, dorsal view ovigerous female beneath Pecten medius Lamarck, 1819 shell; B, ventral view of ovigerous female in Pecten medius shell; C, ventral view of a female brooding 530 juvenile crabs, which was carrying a large piece of sponge. (A–B, after Hale 1925: pl. 40A; C, after Hale 1925: pl. 39).
FIGURE 3 in The sponge crabs of Western Australia and the Northwest Shelf with descriptions of new genera and species (Crustacea: Brachyura: Dromiidae)
FIGURE 3. Austrodromidia insignis (Rathbun, 1923), female, 11.0 × 10.8 mm, Sydney Harbour (NHM 1879: 8): A, dorsal view; B, ventral view; C, ventral view without abdomen, showing sternal grooves filled with sperm plaque.
FIGURE 14. Desmodromia tranterae McLay 2001 in The sponge crabs of Western Australia and the Northwest Shelf with descriptions of new genera and species (Crustacea: Brachyura: Dromiidae)
FIGURE 14. Desmodromia tranterae McLay 2001, male, 10.2 × 9.8 mm: A, dorsal view; B, frontal view, grasping hinge line of cockle shell (Vasticardium vertebratum (Jonas, 1844)) (after McLay & Hosie 2012).
FIGURE 1 in The sponge crabs of Western Australia and the Northwest Shelf with descriptions of new genera and species (Crustacea: Brachyura: Dromiidae)
FIGURE 1. Alainodromia dambimangari sp. nov.: A–C, ovigerous female holotype, 15.2 × 14.9 mm (part of left rostral tooth missing) (WAM C69971): A, dorsal view; B, frontal view (note a tubiculous polychaete has attached to the left third maxilliped); C, ventral view; F, dorsal view left P4 and P5. D–E, paratype male 9.3 × 10.2 mm (WAM C69970): D, dorsal view; E, ventral view.
FIGURE 2 in The sponge crabs of Western Australia and the Northwest Shelf with descriptions of new genera and species (Crustacea: Brachyura: Dromiidae)
FIGURE 2. Austrodromidia australis (Rathbun, 1923), female carrying sponge, 11.1 × 11.9 mm (WAM C25772): A, dorsal view; B, dorsal view close up right anterolateral carapace margin; C, E, frontal view; D, frontal view right anterolateral carapace margin and cheliped.
FIGURE 28 in The sponge crabs of Western Australia and the Northwest Shelf with descriptions of new genera and species (Crustacea: Brachyura: Dromiidae)
FIGURE 28. Lewindromia unidentata (Rüppell, 1830), female, 16.9 × 18.1 mm (WAM C50515): A, dorsal view; B, ventral view; C, dorsal view anterolateral margin; D, dorso-frontal view with facial setae highlighted; E, lateral view; F, ventral view orbits and rostrum.
FIGURE 13. Cryptodromia tuberculata Stimpson, 1858 in The sponge crabs of Western Australia and the Northwest Shelf with descriptions of new genera and species (Crustacea: Brachyura: Dromiidae)
FIGURE 13. Cryptodromia tuberculata Stimpson, 1858, male with sponge cap, 14.3 × 12.9 mm (WAM C 11733): A, dorsal view; B, frontal view, with sponge cap; C, ventral view.
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