Hadean origins of Paleoarchean continental crust in the central Wyoming Province

Frost, Carol D.; McLaughlin, J. Fred; Frost, B. Ronald; Fanning, C. Mark; Swapp, Susan M.; Kruckenberg, Seth C.; Gonzalez, J.J.

doi:10.1130/b31555.1

Cited by 58 publications

(8 citation statements)

References 66 publications

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“…The Wyoming craton has a history extending back to the Eoarchean, and Hf isotopic compositions of 3.8 Ga zircon suggest Hadean origins (Frost et al, 2017;Mueller et al, 1998). Like the Zimbabwe craton, the northern and central portions of the Wyoming craton are characterized by high μ that requires Eoarchean differentiation and formation of an isotopically evolved reservoir (Frost et al, 1998;Wooden & Mueller, 1988).…”

Section: Wyoming Cratonmentioning

confidence: 99%

“…Even though the rock in which these zircon grains crystallized may not be preserved, the surviving grains indicate early crust formation. Both igneous and xenocrystic zircons from these and younger Archean rocks also may have strongly negative ε Hf values, another indication of an ancient crustal history (e.g., Frost et al, 2017;Griffin et al, 2014;Kemp et al, 2010). Cratons that have yielded ancient zircons also commonly preserve Pb isotopic evidence of early formation of a craton (Kamber, 2015).…”

Section: Geological Evidence Of Craton Stabilitymentioning

confidence: 99%

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Nature Versus Nurture: Preservation and Destruction of Archean Cratons

2021

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Initially studied from the surface of the Earth, cratons are large regions of stable continental crust that have undergone minimal deformation since Precambrian time. Whereas cratons were originally believed to be enduring features of the lithosphere, recent studies have revealed that some Archean cratons are susceptible to the tectonic forces that shape the planet and have been modified by subsequent events (e.g.,

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Section: Wyoming Cratonmentioning

confidence: 99%

Section: Geological Evidence Of Craton Stabilitymentioning

confidence: 99%

Nature Versus Nurture: Preservation and Destruction of Archean Cratons

2021

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“…The Wyoming Province is a block of Archean crust with origins that extend back to the Hadean (Frost et al, 2017;Mueller and Wooden, 2012). Neoarchean SPG occur across the Wyoming Province, from the Teton Range in the west to the Black Hills in the east (Fig.…”

Section: Neoarchean Spg Of the Wyoming Provincementioning

confidence: 99%

Petrogenetic and tectonic interpretation of strongly peraluminous granitic rocks and their significance in the Archean rock record

Frost

Prat

2021

American Mineralogist

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Strongly peraluminous granitic rocks (SPG), defined by an aluminum saturation index greater than 1.1, become abundant in the rock record in the Neoarchean. This study identifies three different varieties of Neoarchean SPG in the Archean Wyoming Province, USA. These include calcic SPG, represented by the Webb Canyon Gneiss and Bitch Creek Gneiss of the Teton Range; calc-alkalic to alkali calcic suites composed entirely of SPG, including the Rocky Ridge garnet granite gneiss of the northern Laramie Mountains and the Bear Mountain granite in the Black Hills; and calc-alkalic to alkali-calcic suites that include both weakly and strongly peraluminous granitic rocks, such as the Mount Owen batholith, Wyoming batholith, and Bears Ears intrusion. Although the petrogenesis of all the SPG suites involves partial melting of crustal sources, the composition of those sources, the melting conditions, and the tectonic settings vary.The calcic suites originate by dehydration melting or water excess melting of hornblendeplagioclase rocks at relatively high temperature. The suites composed entirely of SPG form by partial melting of metasedimentary rocks by reactions involving muscovite at lower temperatures. Suites with both weakly and strongly peraluminous granite may form by partial This is the peer-reviewed, final accepted version for American Mineralogist, published by the Mineralogical Society of America.The published version is subject to change. Cite as Authors (Year) Title. American Mineralogist, in press.

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“…Also, new types of rocks appeared in the Paleoarchaean; the calc-alkaline plutons from mantle sources (e.g., 3.45 Ga low-K calc-alkaline diorites of Swaziland) and crust-derived granites (e.g., the 3.3 Ga Singhbhum crust-derived granitoids and the 3.3 Ga Wyoming calc-alkaline granitoids [23]). The appearance of large pure crust-derived granite batholiths indicates that in the Paleoarchaean, continents were thick enough for crustal antexis to occur.…”

Section: Paleoarchaean Thickening Of the Continental Crustmentioning

confidence: 99%

Highlights on Geochemical Changes in Archaean Granitoids and Their Implications for Early Earth Geodynamics

Halla

2018

Geosciences

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The Archaean (4.0–2.5 Ga) continental crust is mainly composed of granitoids, whose geochemical characteristics are a function of their formation mechanisms and components, as well as physical conditions of their source. Therefore, revealing changes in Archaean geodynamic processes requires understanding of geochemical changes in Archaean granitoids. This paper compares key geochemical signatures in granitoid occurrences from the Eoarchaean to Neoarchaean Eras and aims to highlight changes or variations in their geochemical signatures. The study is performed by exploring and comparing geochemical and geochronological datasets of Archaean granitoids compiled from literature. The results show that two end-members of sodic TTGs (tonalite–trondhjemite–granodiorite) occur throughout the Archaean: low- and high-HREE (heavy rare earth elements) types. A profound change in granitoid geochemistry occurred between 3.0 and 2.5 Ga when multi-source high-K calc-alkaline granitoid batholiths emerged, possibly indicating the onset of modern-type plate tectonics.

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Hadean origins of Paleoarchean continental crust in the central Wyoming Province

Cited by 58 publications

References 66 publications

Nature Versus Nurture: Preservation and Destruction of Archean Cratons

Nature Versus Nurture: Preservation and Destruction of Archean Cratons

Petrogenetic and tectonic interpretation of strongly peraluminous granitic rocks and their significance in the Archean rock record

Highlights on Geochemical Changes in Archaean Granitoids and Their Implications for Early Earth Geodynamics

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