. Report of the geological exploration of the fortieth parallel . equally picturesque, being seen high up on the limestone walls, asilver fringe upon their background of deep blue. Throughout the length of the canon were observed only beds of theWahsatch limestone, though some of the lower groups may have escapednotice near its mouth. They are dark blue and gray in color, generally inheavy strata, though sometimes thinly bedded, and containing developmentsof slates and argillites.^ The beds dip eastward, generally at low angles,though in some places showing steep dips. No distinct evidences of
. Report of the geological exploration of the fortieth parallel . equally picturesque, being seen high up on the limestone walls, asilver fringe upon their background of deep blue. Throughout the length of the canon were observed only beds of theWahsatch limestone, though some of the lower groups may have escapednotice near its mouth. They are dark blue and gray in color, generally inheavy strata, though sometimes thinly bedded, and containing developmentsof slates and argillites.^ The beds dip eastward, generally at low angles,though in some places showing steep dips. No distinct evidences of exten-sive faulting east of the line of tlie cliffs represented in Plate XIV was,however, observed. Mr. Henry Eugelmann ineutions the discovery of a fragmeut of Leindodendron inslates, and of carbonaceous matter in bluish-black argillaceous slates in this also obtained a Troductns scmhtriatus and an uudetermiued Athijris from the carion,without dehuing the horizon.—(Gapt. J. 11. Simpson, Expls. in ISoO, 309, 3(j9.) T 3 GeoISiTil 40Parcaiel PLATE XIV. LIMESTOME GLIFES „ PROTO CaJNOjN _ ] PAi\TG-T; TIMPANOGOS PEAK. 349 Above the narrow main riclgc, the canon opens out suddenly into ProvoValley, in which the ridges and hills are covered with soil and debris, andovergrown with grass and timber. Only isolated and detached outcrops ofthe underlying rocks, which were doubtless once covered b}- Tertiary, andperhaps also by Cretaceous beds, can now be found. In the hills innnediatelyabove the canon-narrows, the presence of the Weber Quartzites is indicatedby outcrops of light-colored sandstones and quartzites, while in the valleyabove, near where it opens out into the mai:i Provo Valley, were found, tothe north of the river, limestone strata containing rather poor specimens ofBalcevelKa, but which were sufficient, in connection with the overlying redsandstone, to determine the horizon as the Permo-Carboniferous, and theintermediate group of Upper Coal
Size: 1454px × 1718px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., booksubjec, booksubjectbotany, booksubjectdiscoveriesingeography
