Report of the Geological Exploration of the Fortieth Parallel, Volume VII: Odontornithes: A monograph on the extinct toothed birds of North America
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Geology topics
Publications and source records attributed to Clarence King.
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No abstract available.
The Exploration of the Fortieth Parallel promised, first, a study and description of all the natural resources of the mountain country near the Union and Central Pacific railroads; secondly, the completion of a continuous geological section across the widest expansion of the great Cordilleran Mountain System.
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This publication contains descriptive geology of western regions examined between 1867 to 1873 as part of the Geological Exploration of the Fortieth Parallel.
This publication contains palæontology and ornithology reports for the Geological Exploration of the Fortieth Parallel.
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This publication contains a report on crystalline rocks along the Fortieth Parallel in the Western United States.
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Contains a title, legend, and 11 folio maps in the folio. Contains a topographic (shaded) map of Cordilleran region, limiting meridians 104° and 124°; limiting parallels 29° and 50°. Scale, 60 miles to the inch. Also contains four geologic and four topographic (shaded) maps, on scale of 4 miles to the inch, of the following areas: Sheet I. Longitude, 104° 30'-107° 37'; latitude, 40° 20'-41° 54'. Sheet II. Longitude, 107° 37'-110° 43'; latitude, 40° 16'-41° 50'. Sheet III. Longitude, 110° 43'-113° 50'; latitude, 40° 13'-41° 46'. Sheet IV. Longitude, 113° 50'-116° 56'; latitude, 39° 55'-41° 29'.
I have the honor herewith to present a brief annual report of the operations of the geological exploration of the fortieth parallel, under my charge, for the year ending June 30, 1875, and to state in explanation of its delay that, since the date when it should properly have been rendered, I have been severely ill, and confined to my bed more than half of the time. The entire year bas been spent in office here in New York, and devoted to the preparation of reports and their accompanying illustrations. I had hoped ere this to have been able to go to press with a completed work, and could easily have done so but for the impossibility of getting from the various paleontological authorities (to whom we were obliged to commit our collections of fossils) any final lists. It is the misfortune of geology to be more or less dependent on this branch of specialists. Without their specific determinations, the geological maps, even, cannot receive their ultimate color-designations, nor can reports, which like ours, involve a wide range of stratigraphy, be safely written. So it has happened, in spite of every effort on my part, that these scientific autocrats, although abundantly promising, have again and again disappointed me, and caused a wearying delay in the publication of our report. Vexatious as this has been, it has not, however, failed to add a compensating value to the work at large, in that it has yielded us the time to elaborate certain important branches, as I shall presently show. The following statement of what has been done in each special branch will give a clear idea of the present status of our work.
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The territory within which botanical collections have been nmade in connection with the United States Geological Survey of the 40th Parallel lies wholly within the limits of Northern Nevada and Utah. It forms a narrow tract at no point exceeding seventy miles in width, between the meridians of 111° and 120°, and extending frorn the parallel of 39° at the southwestern limit to that of 42° at the northeastern. This region constitutes the northern portion of what was at first designated as the "Great Basin" the high plateau, without outlet for its waters, separated on the north by low divides from the valley of the Snake River and continuing southward until it merges into the desert of the Lower Colorado. Geologically considered, however, as well as botanically, the term is now properly made to include the whole similar arid stretch of country northward to the plains of the Columbia in latitude 48°.
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