...Figure 4. (a) Slopeshade map of the Swakane canyon lineament with the locations of Slick Grass (SG) and Logger’s Road (LR) trenches shown. Darker shades represent steeper slopes, and lighter shades represent gentler slopes. Estimates of the strike and dip of the structure that forms the lineament...

... zone at this time. Plagioclase-rich and biotite-rich gneiss conglomerate clasts (61% and 14% of all metamorphic clasts) make up the majority of metamorphic clasts in the Lower Clark Canyon Member and match the composition of the Swakane and Skagit Gneisses. Compositional variations of tonalite...

... and Swakane Creek anticlines ( Fig. 2 ). The Swauk or Roslyn “basin” at Cle Elum is actually the low-lying area near the hinge of the Kittitas Valley syncline between the Naneum Ridge and Ainsley Canyon anticlines. The Chumstick Creek fault dextrally offsets the Leavenworth fault at Mill Creek...

... the North Cascade thrust system. Additionally, near-identical age modes and synchronous changes in detrital zircon facies are used to hypothesize a correlation between the Nanaimo Group and the protolith of the Swakane Gneiss. These observations, along with previously identified events in the Cordillera...

... stretching parallel to lineation of hinges of mesoscopic folds in the Skagit Gneiss Complex are compatible with transtension linked to dextral-normal displacement of the Ross Lake fault zone, the northeastern boundary of the Cascades core. The other deeply exhumed domain, the 9–12 kbar Swakane Biotite Gneiss...

...Figure 9. Entiat pluton showing (A) foliations (largely magmatic in pluton) with inset of macroscopic magmatic folds in Crum Canyon region, (B) stereonet plots of foliation with domains outlined by gray lines, and (C) foliation-intensity map (see Fig. 8 caption for explanation). N—Napeequa...

... pattern indicates areas with abundant Eocene dikes, and red lines are representative dike strikes. Dike domains (in bold) discussed in this manuscript include the Corbaley Canyon (CC), Cooper Mountain (CM), eastern Duncan Hill (eDH), Golden Horn-Monument Peak (GMP), Hungry Mountain (HM), southern Duncan...

... assemblage; SJI—San Juan Islands; GI—Gulf Islands. Yellow star in North Cascade core highlights Swakane Gneiss. Map modified from Reed et al. (2005 ). uK—upper Cretaceous; P—Paleocene; KT—Cretaceous-Tertiary. (B) Geologic map of the study area, focused on the Gulf Islands and the eastern edge of Vancouver...

...; Kms—Mount Stuart batholith; Kn—rocks of the Napeequa River area; Ksg—Swakane biotite gneiss; KJi—Ingalls Tectonic Complex; Mcb—Columbia River Basalt Group; Q—alluvium; Tbp—Basalt Peak pluton; Tc—Chumstick Formation; Tcc—Clark Canyon Member; Tcd—Deadhorse Canyon Member; Tcn—Nahahum Canyon Member; Tcr...

... already. On a more detailed scale, some units probably do interfinger, and facies changes undoubtedly occur within them. Yet, the unconformity at the base of the Nahahum Canyon Member ( Fig. 1B ) and the probable unconformity at the base of Trci restrict the possible number of truly coeval facies changes...

... Basalt Group; DC—Deadhorse Canyon unit; Dd—Dinkelman décollement; DH—Duncan Hill pluton; Ef—Entiat fault; Epc—Eagle Plutonic Complex; FDfz—Foggy Dew fault zone; FRfz—Fraser River fault zone; GH—Golden Horn batholith; GPsz—Gabriel Peak shear zone; HZf—Hozameen fault; Lfz—Leavenworth fault zone; LP—Lost...

.... (B) Simplified geologic map of the eastern San Gabriel Mountains showing the Cucamonga and San Antonio terranes. Diagonal lined pattern denotes the location of the Cucamonga and Black Belt shear zones. Boxes show the locations of two detailed studies in Cucamonga and Deer Canyons ( Figs. 2A and 2B...