Indian Ocean plate tectonic model: resource accompaniment to 'Constraining the Jurassic extent of Greater India: Tectonic evolution of the West Australian margin'

The EarthByte Group presents a tectonic model of the Indian Ocean, to accompany a study by Gibbons et al., (2012).

The dataset was created to investigate the first regional-scale tectonic model of the breakup of East Gondwana. The model shows that the breakup of East Gondwana started with the migration of a continental sliver, Argoland, in the Late Jurassic and was followed by breakup between Greater India and Australia-Antarctica in the Early Cretaceous, involving spreading reconfigurations, which left several sunken continental plateaus of Indian crust on the Australian plate. New evidence from seafloor off northwest Australia also shows that the majority of Greater India reached only about halfway up the West Australian margin, to the Wallaby-Zenith Plateaus.

The tectonic model and accompanying documentation may be downloaded from the EarthByte website. Input files are ready for use with GPlates, a free to download, interactive plate-tectonics visualization software program.

For further information, refer to the publications below:

EarthByte团队发布了一套印度洋构造模型，以配套Gibbons等（2012）的相关研究。

本数据集旨在开展东冈瓦纳（East Gondwana）裂解的首个区域尺度构造模型研究。该模型显示，东冈瓦纳裂解始于晚侏罗世时期一块大陆碎块——阿尔戈兰（Argoland）的迁移，随后在早白垩世时期发生大印度（Greater India）与澳南极洲板块（Australia-Antarctica）的裂解，期间伴随洋脊重构事件，最终在澳大利亚板块上遗留了数块由印度地壳构成的沉没大陆高原。来自澳大利亚西北海域的新证据还表明，大印度的主体仅延伸至西澳大利亚陆缘的半途位置，即沃拉比-天顶高原（Wallaby-Zenith Plateaus）。

该构造模型及配套文档可从EarthByte官网下载。其输入文件可直接用于GPlates——一款可免费下载的交互式板块构造可视化软件。

如需进一步信息，请参阅以下出版物：