Paleozoic continent-ocean transition in the Ouachita Mountains imaged from PASSCAL wide-angle seismic reflection-refraction data

Abstract

Research Article| February 01, 1989 Paleozoic continent-ocean transition in the Ouachita Mountains imaged from PASSCAL wide-angle seismic reflection-refraction data G. R. Keller; G. R. Keller 1Department of Geological Sciences, University of Texas, El Paso, Texas 79968-0555 Search for other works by this author on: GSW Google Scholar L. W. Braile; L. W. Braile 2Department of Earth and Atmospheric Sciences, Purdue University, West Lafayette, Indiana 47907 Search for other works by this author on: GSW Google Scholar G. A. McMechan; G. A. McMechan 3Center for Lithospheric Studies, University of Texas at Dallas, Box 830688, Richardson, Texas 75083-0688 Search for other works by this author on: GSW Google Scholar William A. Thomas; William A. Thomas 4Department of Geology, University of Alabama, Box 1945, Tuscaloosa, Alabama 35487 Search for other works by this author on: GSW Google Scholar Steven H. Harder; Steven H. Harder 5Department of Geophysics, Texas A & M University, College Station, Texas 77843 Search for other works by this author on: GSW Google Scholar Wen-Fong Chang; Wen-Fong Chang 3Center for Lithospheric Studies, University of Texas at Dallas, Box 830688, Richardson, Texas 75083-0688 Search for other works by this author on: GSW Google Scholar W. G. Jardine W. G. Jardine 2Department of Earth and Atmospheric Sciences, Purdue University, West Lafayette, Indiana 47907 Search for other works by this author on: GSW Google Scholar Author and Article Information G. R. Keller 1Department of Geological Sciences, University of Texas, El Paso, Texas 79968-0555 L. W. Braile 2Department of Earth and Atmospheric Sciences, Purdue University, West Lafayette, Indiana 47907 G. A. McMechan 3Center for Lithospheric Studies, University of Texas at Dallas, Box 830688, Richardson, Texas 75083-0688 William A. Thomas 4Department of Geology, University of Alabama, Box 1945, Tuscaloosa, Alabama 35487 Steven H. Harder 5Department of Geophysics, Texas A & M University, College Station, Texas 77843 Wen-Fong Chang 3Center for Lithospheric Studies, University of Texas at Dallas, Box 830688, Richardson, Texas 75083-0688 W. G. Jardine 2Department of Earth and Atmospheric Sciences, Purdue University, West Lafayette, Indiana 47907 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1989) 17 (2): 119–122. https://doi.org/10.1130/0091-7613(1989)017<0119:PCOTIT>2.3.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation G. R. Keller, L. W. Braile, G. A. McMechan, William A. Thomas, Steven H. Harder, Wen-Fong Chang, W. G. Jardine; Paleozoic continent-ocean transition in the Ouachita Mountains imaged from PASSCAL wide-angle seismic reflection-refraction data. Geology 1989;; 17 (2): 119–122. doi: https://doi.org/10.1130/0091-7613(1989)017<0119:PCOTIT>2.3.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 SocietyGeology Search Advanced Search Abstract A wide-angle reflection-refraction experiment, sponsored by the Program for Array Seismic Studies of the Continental Lithosphere (PASSCAL), was conducted in the Ouachita Mountains area of southwestern Arkansas and northwestern Louisiana. This experiment employed 400 state-of-the-art seismic recorders and overlapped the southern one-third of the COCORP (Consortium for Continental Reflection Profiling) deep seismic reflection profile in the area. A wide variety of data processing and interpretation techniques was employed to derive an Earth model from these data. The model depicts a preserved early Paleozoic continental margin buried beneath allochthonous Paleozoic strata and younger sedimentary rocks. The southern part of the model indicates the presence of oceanic or highly extended continental crust overlain by about 15 km of mostly Paleozoic sedimentary rock. These results are consistent with little if any shortening of crystalline continental crust during the Ouachita orogeny. 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.