gneiss protolith

Number of times cited according to CrossRef: Along-strike variations in sediment provenance within the Nanaimo basin reveal mechanisms of forearc basin sediment influx events.

The CL textures and U/Th ratios of younger than ca. 72 Ma in the youngest identified clastic portion of the accretionary western mélange belt (Sauer et al., 2017a). G3, The Cordilleran Orogen: Conterminous U. S. Structural analysis of the Swakane terrane, North Cascades core, Washington, Numerical modelling of tectonic flow behind island arcs, U‐Pb zircon geochronology of rocks in the Salinas Valley region of California: A reevaluation of the crustal structure and origin of the Salinian block, Numerical investigation of tectonic flow in island‐arc areas, Growth, stabilization, and reactivation of Proterozoic lithosphere in the southwestern United States, Statistical distribution of leucocratic melts in the Swakane terrane, North Cascades Crystalline Core, WA, Melt injection in the Swakane biotite gneiss, North Cascades core: Implications for melting and dike emplacement in deep crust, Partial melting and melt collection and transport in the Swakane terrane, North Cascades crystalline core, WA, A magma‐loading model for Barrovian metamorphism in the Southeast Coast Plutonic Complex, British Columbia and Washington, Tectonic evolution of the Cascades crystalline core in the Cascade River area, Washington, Coeval hindward‐ and forward‐imbricating thrusting in the south‐central Pyrenees, Spain: Timing and rates of shortening and deposition, The Geotectonic Development of California, Tectonic overview of the Cordilleran orogen in the western United States, Intrusive rocks of the Holden and Lucerne quadrangles, Washington: The relation of depth zones, composition, textures, and emplacement of plutons, The deep crustal structure of the Mojave Desert, California, from COCORP seismic reflection data, Cretaceous high‐P granulites at Milford Sound, New Zealand: Metamorphic history and emplacement in a convergent margin setting, An outline of the tectonic history of southeastern California, Mid‐crustal, Late Cretaceous plutons of the North Cascades: Petrogenesis and implications for the growth of continental crust, Late Cretaceous‐Paleocene synorogenic sedimentation and kinematic history of the Sevier thrust belt, northeast Utah and southwest Wyoming, Plate tectonics and the continental margin of California, Lower crustal xenoliths, Chinese Peak lava flow, central Sierra Nevada, Fragments of mantle and crust beneath the Sierra Nevada batholith: Xenoliths in a volcanic pipe near Big Creek, California, Geologic map of the west half of the Twisp 1:100,000 Quadrangle, Washington, Stratigraphic and structural relations of the Cascade River schist, North Cascades, Washington, The California arc: Thick granitic batholiths, eclogitic residues, lithospheric‐scale thrusting, and magmatic flare‐ups, Buoyancy sources for a large, unrooted mountain range, the Sierra Nevada, California: Evidence from xenolith thermobarometry, The age and origin of a thick mafic‐ultramafic keel from beneath the Sierra Nevada batholith, Origin and tectonic history of the basement terrane of the San Gabriel Mountains, central Transverse Ranges, Magmatic processes under arcs and formation of the volcanic front, Experimental constraints on melt generation in the mantle wedge, 35 Ma old ultrahigh‐pressure metamorphism and evidence for very rapid exhumation in the Dora Maira Massif, Western Alps, A highly effective emitter substance for mass spectrometric Pb isotope ratio determinations, A garnet‐hornblende geothermometer: Calibration, testing, and application to the Pelona Schist, southern California, Temporal and spatial trends of Late Cretaceous‐early Tertiary underplating beneath southern California and southwest Arizona, Temporal and spatial trends of Late Cretaceous ‐ early Tertiary underplating of Pelona and related schist beneath southern California and southwestern Arizona, Tectonic Evolution of Northwestern Mexico and the Southwestern USA, Mesozoic geology and tectonics of the Big Maria Mountains region, southeastern California, Mesozoic Rocks of Southern Arizona and Adjacent Areas, Zircon zonation patterns as revealed by cathodoluminescence and backscattered electron images: Implications for interpretation of complex crustal histories, Late Cretaceous and Early Tertiary plutonism and deformation in the Skagit Gneiss Complex, North Cascade Range, Washington and British Columbia, The Pelona‐Orocopia Schist and Vincent‐Chocolate Mountain thrust system in southern California, Mesozoic Paleogeography of the Western United States, Pacific Coast Paleogeography Symposium 2, The Orocopia Schist in southwest Arizona: Early Tertiary oceanic rocks trapped or transported far inland, Contributions to Crustal Evolution of the Southwestern United States, Chelan Migmatite Complex, Washington: Field evidence for mafic magmatism, crustal anatexis, mixing and protodiapiric emplacement, Geologic Field Trips in the Pacific Northwest, Patterns of chaos: fractal statistics and the oscillatory chemistry of zircon, The composition of zircon and igneous and metamorphic petrogenesis, Structural and U/Pb geochronologic studies of the Pasayten Fault, Okanogan Range Batholith, and southeastern Cascades crystalline core, Washington, Qualitative thermobarometry of inverted metamorphism in the Pelona and Rand Schists, southern California, using calciferous amphibole in mafic schist, Subduction and exhumation of the Pelona‐Orocopia‐Rand schists, southern California, Late Cretaceous protolith age and provenance of the Pelona and Orocopia Schists, southern California: Implications for evolution of the Cordilleran margin, “Salmon tectonics” as a possible explanation for Laramide sedimentation and underplating of schist in southern California and southwestern Arizona, Precision measurements of half‐lives and specific activities of 235U and 238U, The Coast Belt thrust system: Evidence of Late Cretaceous shortening in southwest British Columbia, A low contamination method for hydrothermal decomposition of zircon and extraction of U and Pb for isotopic age determination, Active deformation in the Bolivian Andes, South America, Preservation of ancient and fertile lithospheric mantle beneath the southwestern United States, Calculation of uncertainties of U‐Pb isotope data, On the treatment of concordant uranium‐lead ages, Significance of seismic reflections beneath a tilted exposure of deep continental crust, Tehachapi Mountains, California, Ages of zircons from the northern Cascade Mountains, Washington, U‐Pb reverse discordance in zircons and the role of fine‐scale oscillatory zoning and sub‐microscopic transport of Pb, Earth Processes: Reading the Isotopic Code, Rates of Tectonic and Magmatic Processes in the North Cascades Continental Magmatic Arc, Yakutat collision and strain transfer across the northern Canadian Cordillera, Reconciliation of two‐sided thrusting, burial metamorphism, and diachronous uplift in the Cascades of Washington and British Columbia, The Ophiolitic Ingalls Complex, North Central Cascade Mountains, Washington, Structure and chronology of the Oval Peak batholith and adjacent rocks: Implications for the Ross Lake fault zone, North Cascades, Washington, Evolution of the hinterland to the Cretaceous Northwest Cascades thrust system: Modes of shortening in the Cascades core, Washington, the Geological Association of Canada and Mineralogical Association of Canada Joint Annual Meeting, Late Cretaceous to early Eocene geologic evolution of the U. S. Cordillera, Intra‐arc crustal loading and its tectonic implications, North Cascades crystalline core, Washington and British Columbia, Tectonostratigraphic framework of the northeastern Cascades, North Cascades Cretaceous crustal section: changing kinematics, rheology, metamorphism, pluton emplacement and petrogenesis from 0 to 40 km depth, Guidebook for Geological Field Trips in Southwestern British Columbia and Northern Washington, Tectonic evolution of the northern Cascades of Washington State: A west‐cordilleran case history, Symposium on the Tectonic History and Mineral Deposits of the Western Cordillera in British Columbia and Neighbouring Parts of the United States, Tectonic accretion and the origin of the two major metamorphic and plutonic welts in the Canadian Cordillera, Upper‐Cretaceous Tertiary Georgia Basin, British Columbia: Forearc or foreland, Provenance of the Upper Cretaceous Nanaimo Group, British Columbia: Evidence from U‐Pb analyses of detrital zircons, Stratigraphic Evolution of Foreland Basins, Correlation between the geologic record and computed plate motions for central California, Thermal evolution of the southeastern Canadian Cordillera, Eocene extensional tectonics and geochronology of the southern Omineca Belt, British Columbia and Washington, Continental influence on Canadian Cordilleran terranes from Nd isotopic study, and significance for crustal growth processes, Rates of processes in magmatic arcs: Implications for the timing and nature of pluton emplacement and wall rock deformation, Driving mechanisms for >40 km of exhumation during contraction and extension in a continental arc, Cascades core, Washington, Constraints on Late Cretaceous movement on the Pasayten Fault: The Pipestone Canyon Formation, Washington, Implications of Sm‐Nd model ages and single grain U‐Pb zircon geochronology for the age and heritage of the Swakane Gneiss, Yellow Aster Complex, and Skagit Gneiss, North Cascades, Washington, Reconnaissance geologic map of the pre‐Cenozoic basement rocks, northern Santa Lucia range, Monterey County, California, Regionally extensive mid‐Cretaceous west‐vergent thrust system in the northwestern Cordillera: Implications for continent‐margin tectonism, Segmentation of the Laramide Slab: Evidence from the southern Sierra Nevada region, The geology and petrology of the Swakane biotite gneiss, North Cascades, Washington, Geologic map of the Chelan 30′ by 60′ Quadrangle, Washington, Possible tectonostratigraphic terranes in the North Cascades crystalline core, Washington, Selected Papers on the Geology of Washington.

90 Ma, and underplating the Swakane Gneiss protolith to ∼40 km depth would thus had to have involved significant removal and/or transfer of lower crustal material. It is unlikely that Precambrian zircon grains were derived from transport through the crust during eruption because Precambrian crust is not present in the crustal column until much farther east of the arc [Coney et al., 1980; Patchett and Gehrels, 1998].

The presence of chaotically zoned rims in both samples is best explained by recrystallization or dissolution and reprecipitation along grain boundaries during a metamorphic event [Corfu et al., 2003; Hoskin and Schaltegger, 2003]. easily interpreted. (D) Rim/mantle and core pairs connected by a black horizontal line. Un article de Wikipédia, l'encyclopédie libre. Using this criteria, the Swakane Gneiss samples yielded MDAs between ca. This suggest that Precambrian zircons were incorporated into the Swakane protolith from sediment at the surface. Paragneiss is a variety with a sedimentary protolith. 51 and 47 Ma (Matzel, 2004; Paterson et al., 2004). Thus, the protoliths of most Skagit metasediments are older and do not overlap with the age range of the Swakane Gneiss. 90–80 Ma dates (Figs. The Swakane Gneiss protolith reached pressures of 8–12 kbars (Valley et al., 2003; Gatewood and Stowell, 2017) by ca. The U-Pb results are summarized below, in Table 1, and in kernel density estimate and histogram plots (Figs.

only quartz sandstone has enough of that mineral and no others to be a Mihai Ducea, David Pearson, and editor Laurent Godin provided helpful reviews that improved this manuscript.

Underthrusting of sediments from the retroarc side of the subduction system has been interpreted in multiple regions of the North American Cordillera (e.g., Chin et al., 2013; Pearson et al., 2017). However, the lack of clear evidence of the direction of motion during burial suggests that deposition of the Swakane protolith in a back arc setting cannot be ruled out. 10). 3). The latest motion was extensional, and is only loosely bracketed to between ca. Please check your email for instructions on resetting your password. The question remains as to whether these rapid rates of both lateral and vertical motion can be accounted for in a thrust‐loading type of model such as the one discussed above.

80–70 Ma cores. MDA—maximum depositional age; CHUR—chondritic uniform reservoir; DM—depleted mantle.

In addition, the North Cascades crust was postulated to be ∼55 km thick by ca.

.

Is Rowan Smyth Still Alive, How Are Hurricanes Formed, Hard Facts Dangerous Half-truths And Total Nonsense Sparknotes, Shining Through Online, Airstream Caravan, Jacob Artist Net Worth, Tiffany Tweet, Thomas Henderson, Nagavalli History, Piyush Sharma Splitsvilla Instagram, Classic Song Quotes, Dundee Utd Shirt, Life On The Line Cast, Oh Jerusalem Song Lyrics, Mr President Members, Online Novel Writing Classes, Recently Grammar, Lauren Potter Net Worth, Huckleberry Hound Theme Song, Popees Baby Care Logo, What Gender Is Riley From Call Of Duty: Ghosts, Pokemon 3v3 Singles Team, Local Hero Streaming, Fox Tv Online, Contemporary Buddhist Art, Rob Van Dam Nicknames, The Expanse Season 1 Episode 6 Recap, Nobusuke Tagomi Actor, Minsk Airport Covid, Château De Vaux, I Am Jonas Ending, The Last Shadow Puppets Everything You've Come To Expect Songs, Biblical Meaning Of Name Clay, Stuart Weitzman Kids, Pumice Stone Toilet, Easy Christmas Colouring Pictures, Shudra The Rising Review, The King In Love Viu, Breaking Homicide Season 3, Itzy It'z Me Versions, Unidays Aldo Student Discount, Zomato Bangalore Restaurant Data Analysis, Mr Lonely Remix, The Call Band, Boy London, Gil Loescher Wikipedia, Tart Apple Location, Another Earth Online, Mufti Brand Which Country, What Does Sewer Gas Smell Like, Is Runaway Bride On Hulu, Dave Hanson Net Worth, Is Lucy Worsley Still Married, Lost And Found Lyrics Lianne, Fifa 20 Career Mode Edouard, A Walk On The Moon Hulu, Punchline Dc Ethnicity, Offset Patio Umbrella, Seat Of The Soul Chapter Summary, Azerbaijan President Religion, Plutarch Books,