...Eugene B. Gross Abstract In 1956 several unusual uranium deposits were uncovered in the Marshall Pass district, Saguache County, Colorado. Two of the ore bodies occurred in alluvium at an elevation of about 10,000 feet. The largest of these, on the Lookout No. 22 claim, produced about five tons...

... granodiorite and biotite hornblende tonalite of the Quartz Mountain stock and its cupolas are located in the Manastash inlier, central Cascades, Washington. This stock and its cupolas intrude the low- PT metamorphosed Lookout Mountain Formation turbidites—which are interpreted to have formed in a forearc...

...-silicate, amphibolite, and quartzite are interlayered with these rocks. The granulitic belt lies structurally below Late Cretaceous tonalites and granodiorites of the San Antonio terrane (termed the Tonalite of San Sevaine Lookout by Morton et al., 2001 ; Figs. 2 and 3K – 3P ). Thermobarometry of lower...

..., 2015). The anatectic granite belt is after Chapman et al. (2021). GF Garlock fault; POR Pelona-Orocopia-Rand schist; MFTB Maria foldthrust belt. Transpressional (dextral) shear zones: Or Orofino; WI Western Idaho; MSL Mojave Snow Lake fault. Sinistral and/or reverse shear zones: C Cucamonga and Black...

... similar in mineralogy. They intrude along a ∼50 km corridor between the Burnt River Schist (Baker terrane) and Weatherby Formation (Izee terrane) that is locally subparallel to the southeast-vergent Connor Creek thrust fault ( Fig. 1B ). The two easternmost plutons (Lookout Mountain, Pedro Mountain...

... Formation and Chiwaukum Schist have been correlated with the lithologically similar Lookout Mountain Formation of Manastash Ridge ( Stout 1964 ), but these rocks are intruded by a 157 Ma pluton ( Miller et al. 1993 ) and are thus significantly older than the 125 Ma detrital zircons of the Tonga...

... between the two is sheared, faulted, and (or) overprinted by a strong S 2 flattening (Fig.  4 ) that obscures the nature of the original contact. In the Sioux Lookout area (Fig.  1 ), the southern contact between upper turbidites of the Little Vermilion formation (Warclub assemblage, this paper) and 2733...

...Figure 18 Summit area of Lookout Mountain where outcrop of the Cascade River Schist is exposed, including the outcrop shown in Figures 6 (a) and 17 . View is to the northwest. For regional context, the geology in the distance lies on the western side of the Straight Creek-Fraser River fault...

... bend near Sioux Lookout. To the north, the Miniss River fault is intersected by the east-striking, dextral strike-slip Sydney Lake – Lake St. Joseph fault; the latter merges along strike with the Pashkokogan fault. Restoration of respective displacements indicates that the faults formed sequentially...

.... The texture varies greatly and in some specimens it is almost submicroscopic, but in others it is so coarse that the rock resembles a scricite schist. If the bentonite is derived from a tuff that has not been re-worked, the original tuff structure is often perfectly preserved. Beds of high-grade bentonite...

..., and southern sides of the basin. A general discussion of the lithologic and mineralogic character, age relations, and distribution of rock types of the Precambrian is given by Fitzsimmons (1963) . The Precambrian basement complex of the basin is mainly quartzite, granite, and mica schist. The few deep...

... of the territory covered are chiefly crystalline schists, gneisses and granites, but immed!ately adjacent to the dis- turbed belt blocks of Tertiary sedimentaries have been faulted into the crystallines in a most abrupt manner. The dominant structural feature of the region under discussion is the San Jacinto fault...

... of granite, gneiss, schist, gabbro, quartzite, and marble, of Proterozoic and Paleozoic ages. The basement offshore has not been sampled, but by analogy with that of the coastal plain it is inferred to consist of Paleozoic and Proterozoic(?) metamorphic rocks. Basement grabens filled with Triassic arkosic...

... for an amphibolite in the Western Klamath Belt associated with the May Creek Schist [ 21 ]. The radiometric age of the Josephine Ophiolite is 162 Ma and similar ages have been determined on related ophiolites beyond the Western Klamath terrane as klippe at Snow Camp, Marial, and Rum Creek [ 7 ] ( Table 2...

... the spokes on a wheel. Other less spectacular diverging sand swells are present from Cape Romain southward to Cape Canaveral. The Florida-Hatteras slope, the steeply inclined seaward edge of the continental shelf, extends from Cape Lookout to the Florida Keys. The relief ranges from a few meters near...

... basalt, radiolarian chert, serpentinite-matrix mélange—and arc-derived rocks of Middle Devonian to Early Jurassic age (e.g., Elkhorn Ridge Argillite and Burnt River Schist; Blome and Nestell, 1991 ; Schwartz et al., 2010 ). Early Permian faunas recovered from the Elkhorn Ridge Argillite support...

... sedimentary and volcanic sequences on Chatham Island ( Figs. 2 , 3 ) unconformably overlie a basement of Permian-Jurassic quartz-feldspathic schist (Chatham Schist) and associated minor metagraywacke and metavolcanic rocks. The Chatham Schist probably correlates in part with the “Axial” or “Alpine” facies...

... to the 2685 Ma Ghost Lake Batholith. The Taylor 2 pegmatite consists of three separate limbs that intruded a wide zone of chlorite schist near the eastern end of an altered ultramafic sill. Most of the beryl and emerald occurs in a “zone of mixing” between the southern and central limbs of the pegmatite...