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hickman archean evolution pilbara craton fortescue basin 2023

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Textbook in PDF format One of today’s major geoscientific controversies centres on the origin of the Archean granite‒greenstone terranes. Is the geology of these scattered remnants of our planet’s early crust consistent with the theory that modern-style plate-tectonic processes operated from the early Archean, or does it indicate that tectonic and magmatic processes were different in the Archean? Earth has clearly evolved since its initial formation, so at what stage did its processes of crustal growth first resemble those of today? The logical place to seek answers to these intriguing and important questions is within the best-preserved early Archean crust. The Pilbara region of northwest Australia is internationally famous for its abundant and exceptionally well-preserved fossil evidence of early life. However, until recently the area has received much less recognition for the key evidence it provides on early Archean crustal evolution. This book presents and interprets this evidence through a new stage-by-stage account of the development of the Pilbara’s geological record between 3.53 and 2.63 Ga. The Archean Pilbara crust represents one fragment of Earth’s oldest known supercontinent Vaalbara, which also included the Kaapvaal Craton of southern Africa. Recognition of Vaalbara expands the background database for both these areas, allowing us to more fully understand each of them. Outline of the Pilbara Craton Eoarchean and Early Paleoarchean Crust of the Pilbara Craton Warrawoona Large Igneous Province, 3530–3427 Ma Strelley Pool Formation: Continental Sedimentation Between Paleoarchean LIPs Kelly Large Igneous Province, 3350–3315 Ma Paleoarchean Continental Breakup of the Pilbara Craton Mesoarchean Rift and Marginal Basins of the Pilbara Craton Mesoarchean Subduction in the Pilbara Craton Mesoarchean Basin Evolution Inland of Magmatic Arcs Orogenies, Cratonization, and Post-Orogenic Granites Mineralization in the Northern Pilbara Fortescue Group: The Neoarchean Breakup of the Pilbara Craton

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Hickman A. Archean Evolution of the Pilbara Craton and Fortescue Basin 2023.pdf 67.1 MB

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hickman archean evolution pilbara craton fortescue basin 2023

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