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STRATIGRAPHY AND STRUCTURE OF THE NORTHERN SANGRE DE CRISTO MOUNTAINS, COLORADO

1958; Geological Society of America; Volume: 69; Issue: 9 Linguagem: Inglês

10.1130/0016-7606(1958)69[1143

1943-2674

Linus R. Litsey,

Geological and Geochemical Analysis

Research Article| September 01, 1958 STRATIGRAPHY AND STRUCTURE OF THE NORTHERN SANGRE DE CRISTO MOUNTAINS, COLORADO LINUS R LITSEY LINUS R LITSEY THE CALIFORNIA COMPANY, HARVEY, LOUISIANA Search for other works by this author on: GSW Google Scholar Author and Article Information LINUS R LITSEY THE CALIFORNIA COMPANY, HARVEY, LOUISIANA Publisher: Geological Society of America First Online: 02 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Copyright © 1958, The Geological Society of America, Inc. Copyright is not claimed on any material prepared by U.S. government employees within the scope of their employment. GSA Bulletin (1958) 69 (9): 1143–1178. https://doi.org/10.1130/0016-7606(1958)69[1143:SASOTN]2.0.CO;2 Article history First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation LINUS R LITSEY; STRATIGRAPHY AND STRUCTURE OF THE NORTHERN SANGRE DE CRISTO MOUNTAINS, COLORADO. GSA Bulletin 1958;; 69 (9): 1143–1178. doi: https://doi.org/10.1130/0016-7606(1958)69[1143:SASOTN]2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Precambrian metamorphic and igneous rocks, Paleozoic sedimentary rocks, and Tertiary igneous rocks are exposed in the northern Sangre de Cristo Mountains. The sedimentary rocks of Paleozoic age are most abundant and range from Ordovician through Permian. The pre-Pennsylvanian sedimentary rocks average about 1000 feet thick and are for the most part limestones and dolomites with lesser amounts of shale, sandstone, and quartzite. The Pennsylvanian and Permian rocks, more than 14,500 feet thick, are coarse clastic rocks deposited in the Colorado-New Mexico zeugogeo-syncline. The Pennsylvanian rocks are poorly stratified and poorly sorted, drab sandstones and fine conglomerates; red sandstones and arkosic conglomerates predominate in the Permian rocks.A tonalite stock of Tertiary age intrudes Pennsylvanian rocks in the southern part of the mapped area. Small dikes and sills, probably of Tertiary age, are present locally elsewhere in the area.The northern Sangre de Cristo Range is a fault block uplifted along a concealed, high-angle fault that separates the range from the San Luis Valley to the west. The sedimentary rocks in the northern Sangre de Cristo Mountains strike generally north-northwest, nearly parallel to the trend of the range, and dip east 30° or more, forming the east flank of the Laramide Sawatch arch. Numerous high-angle strike faults are present. In general, faulting is more prominent than folding. All structures other than those of the Precambrian are probably Laramide or younger in age. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.