Cryogenian iron formations in the glaciogenic Kingston Peak Formation, California
Maxwell Alexander Lechte, Malcolm William Wallace, Ashleigh van Smeerdijk Hood, Noah Planavsky
PRECAMBRIAN RESEARCH | ELSEVIER SCIENCE BV | Published : 2018
The Kingston Peak Formation records glacial sedimentation during the Cryogenian in Death Valley, California, and contains iron formation horizons. These iron formations are part of a thick sedimentary succession containing glaciogenic diamictites, together with mass flow breccias, conglomerates, sandstones and siltstones. The Kingston Peak iron formations are mineralogically and sedimentologically simple, consisting of finely laminated hematitic siltstones that contain up to 50 wt% Fe. These iron formations have been the subject of controversy as they have previously been described as being either absent, or the product of volcanism, diagenesis, hydrothermalism or weathering. Here we present..View full abstract
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Awarded by Australian Research Council Discovery Grant
This research was funded by Australian Research Council Discovery Grant DP130102240 to MWW. MAL acknowledges funding from the Australian Government Research Training Program and the International Association of Sedimentologists Postgraduate Grant. AvSH was funded by a NASA Astrobiology Institute Postdoctoral Fellowship. The authors would like to thank: Alice Shuster and Ganging Jiang for assistance in the field; Tony Prave and Dan Le Heron for helpful Death Valley locality advice; Alan Greig, Graham Hutchinson, Brennan O'Connell and Dan Asael for help with the geochemical analyses. This manuscript benefited from the constructive feedback of Ian Fairchild, an anonymous reviewer and the editorial assistance of Randall Parrish.