Strontium-isotope and sequence stratigraphy of the Miocene Kirkwood Formation, southern New Jersey

Abstract

Research Article| April 01, 1993 Strontium-isotope and sequence stratigraphy of the Miocene Kirkwood Formation, southern New Jersey PETER J. SUGARMAN; PETER J. SUGARMAN 1New Jersey Geological Survey, CN 427, Trenton, New Jersey 086252Department of Geological Sciences, Rutgers University, New Brunswick, New Jersey 08903 Search for other works by this author on: GSW Google Scholar KENNETH G. MILLER; KENNETH G. MILLER 2Department of Geological Sciences, Rutgers University, New Brunswick, New Jersey 089033Lamont-Doherty Geological Observatory of Columbia University, Palisades, New York 10964 Search for other works by this author on: GSW Google Scholar JAMES P. OWENS; JAMES P. OWENS 4U.S. Geological Survey, 926 National Center, Reston, Virginia 22092 Search for other works by this author on: GSW Google Scholar MARK D. FEIGENSON MARK D. FEIGENSON 2Department of Geological Sciences, Rutgers University, New Brunswick, New Jersey 08903 Search for other works by this author on: GSW Google Scholar Author and Article Information PETER J. SUGARMAN 1New Jersey Geological Survey, CN 427, Trenton, New Jersey 086252Department of Geological Sciences, Rutgers University, New Brunswick, New Jersey 08903 KENNETH G. MILLER 2Department of Geological Sciences, Rutgers University, New Brunswick, New Jersey 089033Lamont-Doherty Geological Observatory of Columbia University, Palisades, New York 10964 JAMES P. OWENS 4U.S. Geological Survey, 926 National Center, Reston, Virginia 22092 MARK D. FEIGENSON 2Department of Geological Sciences, Rutgers University, New Brunswick, New Jersey 08903 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1993) 105 (4): 423–436. https://doi.org/10.1130/0016-7606(1993)105<0423:SIASSO>2.3.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 PETER J. SUGARMAN, KENNETH G. MILLER, JAMES P. OWENS, MARK D. FEIGENSON; Strontium-isotope and sequence stratigraphy of the Miocene Kirkwood Formation, southern New Jersey. GSA Bulletin 1993;; 105 (4): 423–436. doi: https://doi.org/10.1130/0016-7606(1993)105<0423:SIASSO>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 SocietyGSA Bulletin Search Advanced Search Abstract We use Sr-isotope stratigraphy to correlate the Miocene Kirkwood Formation of the New Jersey Coastal Plain to the Geomagnetic Polarity Time Scale (GPTS) and to ascertain the age of Miocene depositional sequences. Sr-isotope stratigraphy confirms diatom biostratigraphy, which delineates three Kirkwood sequences corresponding to East Coast Diatom Zone (ECDZ) 1, ECDZ 2, and ECDZ 6 of Andrews (1988). Sr-isotope age estimates of the lowermost sequence (= ECDZ 1) range from 19.2 to 22.6 Ma ± 0.5 m.y. The middle sequence (= ECDZ 2) ranges from 15.5 to 17.4 Ma ± 0.5 m.y.; a disconformity within ECDZ 2 at the Belleplain State Forest borehole and the Wildwood 198A well separates it into two sequences, with a possible hiatus from 17 to 16 Ma. Sr-isotope age estimates of the upper Kirkwood sequence (= ECDZ 6) are not as certain and range from 11.5 to 13.6 Ma ± 0.8 Ma. A shorter age range of 12.2-13.6 Ma for this sequence is supported by its assignment to the D. stauracanthus silicoflagellate Subzone. Sedimentation rates were as high as 40 m per million years during deposition of the Kirkwood Formation, suggesting possible tectonic influences on depositional history. The timing of lower to middle Miocene sequence boundaries from the New Jersey Coastal Plain compares well with other indicators of sea-level change, including oxygen isotopes (Miller and others, 1991b), the global sea-level record of Haq and others (1987), and the offshore New Jersey sequence boundaries of Greenlee and others (1992). Thus, both tectonic and eustatic changes influenced Miocene depositional history of the New Jersey Coastal Plain. 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.