Basal inflection-controlled shelf-edge wedges off New Jersey track sea-level fall

Research Article| May 01, 2005 Basal inflection-controlled shelf-edge wedges off New Jersey track sea-level fall Sean P.S. Gulick; Sean P.S. Gulick 1University of Texas, Jackson School of Geosciences, Institute for Geophysics, 4412 Spicewood Springs Road, Building 600, Austin, Texas 78759, USA Search for other works by this author on: GSW Google Scholar John A. Goff; John A. Goff 1University of Texas, Jackson School of Geosciences, Institute for Geophysics, 4412 Spicewood Springs Road, Building 600, Austin, Texas 78759, USA Search for other works by this author on: GSW Google Scholar James A. Austin, Jr; James A. Austin, Jr 1University of Texas, Jackson School of Geosciences, Institute for Geophysics, 4412 Spicewood Springs Road, Building 600, Austin, Texas 78759, USA Search for other works by this author on: GSW Google Scholar Clark R. Alexander, Jr.; Clark R. Alexander, Jr. 2Skidaway Institute of Oceanography, 10 Ocean Science Circle, Savannah, Georgia 31411, USA Search for other works by this author on: GSW Google Scholar Sylvia Nordfjord; Sylvia Nordfjord 3University of Texas, Jackson School of Geosciences, Institute for Geophysics, 4412 Spicewood Springs Road, Building 600, Austin, Texas 78759, USA Search for other works by this author on: GSW Google Scholar Craig S. Fulthorpe Craig S. Fulthorpe 3University of Texas, Jackson School of Geosciences, Institute for Geophysics, 4412 Spicewood Springs Road, Building 600, Austin, Texas 78759, USA Search for other works by this author on: GSW Google Scholar Geology (2005) 33 (5): 429–432. https://doi.org/10.1130/G21310.1 Article history received: 27 Oct 2004 rev-recd: 03 Jan 2005 accepted: 04 Jan 2005 first online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Sean P.S. Gulick, John A. Goff, James A. Austin, Clark R. Alexander, Sylvia Nordfjord, Craig S. Fulthorpe; Basal inflection-controlled shelf-edge wedges off New Jersey track sea-level fall. Geology 2005;; 33 (5): 429–432. doi: https://doi.org/10.1130/G21310.1 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 key marker for examining the latest Pleistocene history of the New Jersey margin is the high-amplitude, long-recognized R-horizon reflector. This time-transgressive surface was formed 47– 33 ka and represents the integrated topographic and bathymetric surface developed during the complicated sea-level oscillation associated with the regression that preceded the Last Glacial Maximum (LGM). From landward to seaward across the outer shelf, the R reflector changes from subhorizontal, in most locations <9 m beneath the modern seafloor, to seaward dipping, forming the base of two offlapping sediment wedges: the previously described outer-shelf wedge and a deep-shelf wedge seaward of it. This transition occurs across two inflection zones, where the dip of the R reflector steepens seaward, that can be traced for tens of kilometers along strike and mark the landward limits of these wedges. These inflection zones are possibly former wave-dominated shorefaces; these represent the primary topographic elements present during the last regression. We speculate that these inflections dictated both the locations for deposition of the two prograding, offlapping wedges that developed during the complex sea-level fall prior to the LGM and their successive erosion before and after the LGM. We suggest that such inflection zones and their associated wedges are important markers of regression in clastic-dominated outer-shelf settings along passive margins. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.