Tidalites in the Eureka Quartzite (Ordovician), Eastern California and Nevada
The Eureka Quartzite (Ordovician) occurs as a well-exposed, cliff-forming sandstone in the Basin-and-Range Province of eastern California and Nevada over an area in excess of 200,000 sq km2 and ranges in thickness from 50 to 150 meters (Ross, 1964; Webb, 1956). Selected outcrops (Fig. 17-1; Table 17-1) contain a variety of sedimentary and biogenic structures indicating the Eureka Quartzite to be a tidalite (cf. Klein, 1971; Swett et al., 1971). The Eureka is sandwiched between the intertidal carbonates of the Ely Springs Dolomite (Chamberlin, 1975) and the Pogonip Group (Stricker, 1973). The general stratigraphic relationships are summarized in Figure 17-2.
KeywordsGreat Basin Quartz Arenite Current Ripple Lenticular Bedding Dolomitic Mudstone
Unable to display preview. Download preview PDF.
- Chamberlin, T. L. 1975. Stratigraphy of Upper Ordovician Ely Springs Dolomite in the southern Great Basin of Utah and Nevada. Unpublished Ph.D. dissertation, Univ. Illinois, Urbana.Google Scholar
- Houbolt, J. J. H. C. 1968. Recent sediments in the southern bight of the North Sea. Geol. Mijnbouw 47 ,245–273.Google Scholar
- Klein, G. deV. 1970a. Depositional and dispersal dynamics of intertidal sand bars. J. Sed. Petrol. 40 ,1095–1127.Google Scholar
- Klein, G. deV. 1970b. Tidal origin of a Precambian Quartzite-The Lower Fine-grained Quartzite (Dalradian) of Islay, Scotland. J. Sed. Petrol. 40 ,973–985.Google Scholar
- Reineck, H.-E. 1963. Sedimentgefuge im Bereich der Sudliche Nordsee. Abhandl. Sencken. Nat. Gesell. 505 ,1–138.Google Scholar
- Ross, R. J., Jr. 1964. Relations of middle Ordovician time and rock units in Basin Ranges, western United States. Am. Assoc. Petrol. Geol. Bull. 48 ,1526–1554.Google Scholar
- Stricker, G. D. 1973. Petrography and microfacies of the Pogonip Group, Arrow Canyon Range, Nevada. Unpublished Ph.D. dissertation, Univ. Illinois, Urbana.Google Scholar
- Webb, G. W. 1956. Middle Ordovician detailed stratigraphic sections for western Utah and eastern Nevada. Utah Geol. Min. Sur. Bull. 57.Google Scholar