Kirsten Sauer

Los Alamos National Laboratory

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Robert B. Miller

San Jose State University

Stacia M. Gordon

University of Nevada, Reno

Christopher M. Fisher

Washington State University

Jeffrey D. Vervoort

Washington State University

Florie Caporuscio

Los Alamos National Laboratory

Marlena Rock

Los Alamos National Laboratory

Hakim Boukhalfa

Los Alamos National Laboratory

Carl E. Jacobson

Iowa State University

Edward Matteo

Sandia National Laboratories California

Carlos F. Jové-Colón

Sandia National Laboratories

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Los Alamos National Laboratory

Washington State University

Government of the United States of America

Sandia National Laboratories California

Sandia National Laboratories

Oak Ridge National Laboratory

McGill University

Monash University

Centre National de la Recherche Scientifique

University of California, Los Angeles

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Sediment incorporation into continental arc systems and paleogeography of the western North American Cordillera: Insights from the North Cascades, Washington

Kirsten Sauer

Palaeogeography

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ORIGINS AND RELATIONSHIPS OF UNITS IN AND ADJACENT TO THE ROSS LAKE FAULT ZONE, NORTH CASCADES, WASHINGTON: IMPLICATIONS FOR BURIAL OF META-SUPRACRUSTAL ROCKS INTO THE DEEP LEVELS OF ARCS

Abstracts with programs - Geological Society of America (2016)

Leonard D. Hogan Kirsten Sauer Robert B. Miller

10.1130/abs/2016cd-274731

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Selective hydrothermal extraction of lanthanides: Mimicking natural ore-forming processes [Slides]

Artaches Migdissov Andrew Strzelecki Hakim Boukhalfa Kirsten Sauer Haylea Nisbet

Rare Earth Elements (REE) consumption in the US was 20,000 metric ton in 2018. China controls 97% of the global REE market. The aims for new technology are to 1. Avoid investing in extraction of cheap LREE, extract M/HREE only → increase the value of the intermediate/final product, 2. Exclude extraction and concentration of U and Th → avoid investment in rad remediation, and 3. Maximize environmental friendliness of the technology. Hints from nature can aid in achieving these amis.

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Tonne

Rare-earth element

Consumption

10.2172/1601603

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CONTRIBUTION OF METASEDIMENTARY ROCKS TO SMALL SCALE MELTS WITHIN THE DEEP LEVELS OF CONTINENTAL ARCS: INSIGHT FROM THE SWAKANE AND SKAGIT METASEDIMENTARY ROCKS AND ASSOCIATED MELT GENERATIONS

Abstracts with programs - Geological Society of America (2017)

Stacia M. Gordon Kirsten Sauer Robert B. Miller Jeff D. Vervoort Christopher M. Fisher

10.1130/abs/2017am-302665

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Provenance and metamorphism of the Swakane Gneiss: Implications for incorporation of sediment into the deep levels of the North Cascades continental magmatic arc, Washington

Lithosphere (2018)

Kirsten Sauer Stacia M. Gordon Robert B. Miller Jeffrey D. Vervoort Christopher M. Fisher

The Swakane Gneiss, interpreted to represent sedimentary strata metamorphosed at 8–12 kbar, is the deepest exposed crustal levels within the exhumed North Cascades continental magmatic arc, yet the nature and age of its protolith and the mechanism by which it was transported to deep-crustal levels remains unclear. Zircons from 11 paragneiss and schist samples were analyzed for U-Pb age and Hf-isotope composition in order to investigate the tectonic history of the Swakane Gneiss from protolith deposition to metamorphism within the North Cascades arc. Zircons interpreted to have crystallized in situ during metamorphism and/or melt-crystallization within the Swakane Gneiss at depth have ca. 74–66 Ma ages. Detrital-zircon age and Hf-isotope characteristics demonstrate provenance shifts that correlate with maximum depositional ages of ca. 93–81 Ma. Samples deposited between ca. 93 and 88 Ma have dominantly Mesozoic age peaks with initial εHf values between depleted mantle and chondritic uniform reservoir (CHUR), whereas ca. 86–81 Ma sample show the addition of distinct Proterozoic populations (ca. 1380 and 1800–1600 Ma) and Late Cretaceous zircons with unradiogenic Hf-isotope compositions. Similar detrital-zircon age and Hf-isotope patterns are observed in several Upper Cretaceous forearc and accretionary wedge units between southern California and Alaska along the North American continental margin. The connection between the Swakane Gneiss and these potential protoliths located outboard of Cordilleran arc systems indicate burial by either underplating of accretionary-wedge sediments or underthrusting of forearc sediments. Therefore, the protolith and incorporation history for the Swakane Gneiss is likely similar to those of deep crustal metasedimentary units elsewhere in the North Cascades (i.e., the Skagit Gneiss Complex) and to the south along the continental margin (i.e., the Pelona-Orocopia-Rand schists and Schist of Sierra de Salinas). These observations suggest that burial of sediment outboard of continental magmatic arc systems may be a major mechanism for the transfer of sediment to the deep levels of continental arcs.

Protolith

Forearc

Continental arc

Accretionary wedge

10.1130/l712.1

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Citations (18)

Deep-crustal metasedimentary rocks support Late Cretaceous “Mojave-BC” translation

Geology (2019)

Kirsten Sauer Stacia M. Gordon Robert B. Miller Carl E. Jacobson Marty Grove

Research Article| January 04, 2019 Deep-crustal metasedimentary rocks support Late Cretaceous "Mojave-BC" translation Kirsten B. Sauer; Kirsten B. Sauer 1Department of Geological Sciences, University of Nevada–Reno, Reno, Nevada 89557, USA Search for other works by this author on: GSW Google Scholar Stacia M. Gordon; Stacia M. Gordon 1Department of Geological Sciences, University of Nevada–Reno, Reno, Nevada 89557, USA Search for other works by this author on: GSW Google Scholar Robert B. Miller; Robert B. Miller 2Department of Geology, San Jose State University, San Jose, California 95112, USA Search for other works by this author on: GSW Google Scholar Carl E. Jacobson; Carl E. Jacobson 3Department of Geological and Atmospheric Sciences, Iowa State University, Ames, Iowa 50011, USA4Department of Earth and Space Sciences, West Chester University, West Chester, Pennsylvania 19383, USA Search for other works by this author on: GSW Google Scholar Marty Grove; Marty Grove 5Department of Geological Sciences, Stanford University, Stanford, California 94305, USA Search for other works by this author on: GSW Google Scholar Jeffrey D. Vervoort; Jeffrey D. Vervoort 6School of the Environment, Washington State University, Pullman, Washington 99163, USA Search for other works by this author on: GSW Google Scholar Christopher M. Fisher Christopher M. Fisher 6School of the Environment, Washington State University, Pullman, Washington 99163, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Kirsten B. Sauer 1Department of Geological Sciences, University of Nevada–Reno, Reno, Nevada 89557, USA Stacia M. Gordon 1Department of Geological Sciences, University of Nevada–Reno, Reno, Nevada 89557, USA Robert B. Miller 2Department of Geology, San Jose State University, San Jose, California 95112, USA Carl E. Jacobson 3Department of Geological and Atmospheric Sciences, Iowa State University, Ames, Iowa 50011, USA4Department of Earth and Space Sciences, West Chester University, West Chester, Pennsylvania 19383, USA Marty Grove 5Department of Geological Sciences, Stanford University, Stanford, California 94305, USA Jeffrey D. Vervoort 6School of the Environment, Washington State University, Pullman, Washington 99163, USA Christopher M. Fisher 6School of the Environment, Washington State University, Pullman, Washington 99163, USA Publisher: Geological Society of America Received: 04 Sep 2018 Revision Received: 11 Nov 2018 Accepted: 27 Nov 2018 First Online: 04 Jan 2019 Online Issn: 1943-2682 Print Issn: 0091-7613 © 2019 Geological Society of America Geology (2019) 47 (2): 99–102. https://doi.org/10.1130/G45554.1 Article history Received: 04 Sep 2018 Revision Received: 11 Nov 2018 Accepted: 27 Nov 2018 First Online: 04 Jan 2019 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Kirsten B. Sauer, Stacia M. Gordon, Robert B. Miller, Carl E. Jacobson, Marty Grove, Jeffrey D. Vervoort, Christopher M. Fisher; Deep-crustal metasedimentary rocks support Late Cretaceous "Mojave-BC" translation. Geology 2019;; 47 (2): 99–102. doi: https://doi.org/10.1130/G45554.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Metasedimentary rocks in the mid- to lower crust of exhumed continental arcs preserve information about both sedimentary provenance and metamorphic pressure-temperature paths, providing a unique perspective on the tectonic history of an arc, including margin-parallel translation and sediment-burial mechanisms. The Swakane Biotite Gneiss (Washington State, USA) and the Pelona, Orocopia, Rand, Sierra de Salinas, and related schists (PORS) (California and Arizona) represent metasedimentary rocks that were incorporated into the deep levels of North American Cordilleran arc systems. We evaluated the provenances for the sedimentary protoliths of these units by detrital zircon U-Pb and Hf-isotope analyses to assess paleogeographic reconstructions for western North America. All samples have similar Mesozoic peaks, and Proterozoic age populations (1.38 Ga and 1.6–1.8 Ga) are present in samples with maximum depositional ages younger than ca. 86 Ma. Zircon Hf-isotope results are similar for these Proterozoic populations, but the Swakane Mesozoic zircon samples reveal slight differences in comparison to PORS samples. Similar detrital zircon patterns, timing of emplacement, lithology, and structural setting suggest that these two distinct units formed at the same latitude and are consistent with recent interpretations of paleomagnetic data that indicate "moderate" (∼1600 km) northward translation for the North Cascades arc. This study provides an example of how sediment provenance signatures combined with interpreted metamorphic histories can be used to track vertical displacement and horizontal translation within a complex, long-lived, convergent-margin system. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.

Miller

10.1130/g45554.1

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Citations (11)

Evolution of the Jura-Cretaceous North American Cordilleran margin: Insights from detrital-zircon U-Pb and Hf isotopes of sedimentary units of the North Cascades Range, Washington

Geosphere (2017)

Kirsten Sauer Stacia M. Gordon Robert B. Miller Jeffrey D. Vervoort Christopher M. Fisher

The U-Pb age and Hf-isotope composition of detrital zircons from Jurassic to Upper Cretaceous sedimentary rocks adjacent to the southern North Cascades–Coast Plutonic Complex continental magmatic arc document shifting provenance, the tectonic evolution of the arc system, and translation along the continental margin. Systematic changes in the detrital-zircon data provide insight that the western margin of North America evolved from: marginal basins adjacent to continent-fringing oceanic arcs (ca. 160–140 Ma); forearc basins adjacent to mid-Cretaceous (ca. 120–90 Ma) Andean-type continental arcs; and addition of a cratonic source to forearc and accretionary wedge units to Cordilleran arc systems in the mid-Late Cretaceous (ca. 85 Ma). Jurassic Methow terrane, Nooksack Formation, and western mélange belt units dominantly contain detrital zircons derived from accreted oceanic terranes, whereas Lower Cretaceous strata from the same units have age peaks that correspond to known pulses of magmatism in Cordilleran continental magmatic arc systems. The age peaks and Hf-isotope signature of the Jurassic and Lower Cretaceous strata are comparable to multiple sources exposed along the margin. In contrast, the Upper Cretaceous western mélange belt has distinct Precambrian zircon populations and unradiogenic Late Cretaceous zircons that are more similar to southwestern than northwestern Laurentian sources. Statistical comparisons confirm provenance similarities between rocks of the North Cascades and those 700–2000 km to the south and, thus, support margin-parallel translation from as far as the latitude of southern California.

Forearc

Continental Margin

Continental arc

Back-arc basin

Passive margin

Accretionary wedge

North American Plate

10.1130/ges01501.1

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Citations (23)

Hydrothermal Interaction of Wyoming Bentonite and Opalinus Clay

Clays and Clay Minerals (2020)