North American microtektites in Deep Sea Drilling Project cores from the Caribbean Sea and Gulf of Mexico

Research Article| June 01, 1979 North American microtektites in Deep Sea Drilling Project cores from the Caribbean Sea and Gulf of Mexico B. P. GLASS; B. P. GLASS 1Geology Department, University of Delaware, Newark, Delaware 19711 Search for other works by this author on: GSW Google Scholar M. J. ZWART M. J. ZWART 1Geology Department, University of Delaware, Newark, Delaware 19711 Search for other works by this author on: GSW Google Scholar Author and Article Information B. P. GLASS 1Geology Department, University of Delaware, Newark, Delaware 19711 M. J. ZWART 1Geology Department, University of Delaware, Newark, Delaware 19711 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1979) 90 (6): 595–602. https://doi.org/10.1130/0016-7606(1979)90<595:NAMTID>2.0.CO;2 Article history First Online: 01 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 B. P. GLASS, M. J. ZWART; North American microtektites in Deep Sea Drilling Project cores from the Caribbean Sea and Gulf of Mexico. GSA Bulletin 1979;; 90 (6): 595–602. doi: https://doi.org/10.1130/0016-7606(1979)90<595:NAMTID>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 Several thousand microtektites (125 to 1,000 µm in diameter) have been found in cores from two Deep Sea Drilling Project sites: site 94 in the Gulf of Mexico and site 149 in the Caribbean Sea. The microtektites occur in upper Eocene sediments associated with the last occurrence of at least five species of Radiolaria. X-ray diffraction data, energy dispersive X-ray analysis, and petrographic studies indicate the presence of inclusions of quartz, cristobalite, and lechatelierite. Major-element compositions were determined for 57 of the microtektites using energy-dispersive X-ray analysis. The geographical location, age, petrography, and chemistry of the microtektites indicate that they belong to the North American tektite strewn field (∼34 m.y. old). Calculations indicate that there may be as much as 109 t (metric tons) of microtektites in this strewn field. 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.