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Sourcing the sand; accessory mineral fertility, analytical and other biases in detrital U-Pb provenance analysis

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doi: 10.1016/j.earscirev.2020.103093
Authors:Chew, David; O'Sullivan, Gary; Caracciolo, Luca; Mark, Chris; Tyrrell, Shane
Author Affiliations:Primary:
Trinity College Dublin, Department of Geology, Dublin, Ireland
University College Dublin, Dublin, Ireland
FAU Erlangen-Nürnberg, Erlangen, Germany
National University of Ireland, Galway, Ireland
Volume Title:Earth-Science Reviews
Source:Earth-Science Reviews, Vol.202. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 0012-8252
Publication Date:2020
Note:In English. 193 refs.; illus., incl. 2 tables, geol. sketch map
Summary:Interpreting the wealth of new data derived from the diverse suite of modern single-grain provenance approaches available to a sedimentologist requires a thorough understanding of the potential biases in the information recorded by each mineral-provenance system. This review focuses on the various possible mineral-specific biases in U-Pb accessory mineral provenance studies employing the minerals zircon, rutile, apatite, monazite and titanite, focusing on biases resulting from variations in source-rock mineralogy (fertility). Fertility is intimately linked to the mineral petrogenesis of crystalline basement sources, which is another key aspect of this review. This petrogenetic information, which often resides in the specialist petrology literature, has great relevance to fertility studies (particularly those measuring mineral content in modern river sediment using confluence and along-trunk sampling) as trace-element abundances and/or elemental ratios in many accessory minerals can be linked to specific lithologies. Other mineral-specific biases in single-grain provenance analysis considered include physical and chemical modifications both before and after deposition, while the diverse suite of modern single-grain analytical approaches also requires understanding of potential methodological and laboratory induced-biases. A series of multi-proxy provenance studies are presented where fertility bias apparently plays a significant role. In magma-poor metamorphic belts (e.g. segments of the Himalayas and Caledonides-Appalachians), it is shown that zircon growth is limited, and monazite, apatite or rutile associated with the youngest tectonomagmatic events are significantly more fertile. Such multi-proxy provenance studies will be greatly aided in the future by high-throughput, coupled U-Pb age - trace-element analyses integrated with automated heavy mineral determinations employing highly efficient sample preparation protocols.
Subjects:Absolute age; Accessory minerals; Apatite; Clastic sediments; Dates; Diagenesis; Jurassic; Mesozoic; Metals; Monazite; Nesosilicates; Orthosilicates; Oxides; Phosphates; Pressure; Provenance; Rare earths; Rutile; Sand; Sedimentology; Sediments; Silicates; Temperature; Titanite; Titanite group; Trace elements; Triassic; U/Pb; Zircon; Zircon group; Asia; Brahmaputra River; Ganges River; Himalayas; North Carolina; United States; Barents Shelf
Coordinates:N350000 N360000 W0800000 W0840000
N210000 N300000 W0800000 W0940000
N690000 N740000 E0324000 E0142500
Record ID:878092-11
Copyright Information:GeoRef, Copyright 2021 American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands
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