Convection of North Pacific deep water during the early Cenozoic

Abstract

Research Article| June 01, 2012 Convection of North Pacific deep water during the early Cenozoic Ashley M. Hague; Ashley M. Hague 1Texas A&M University, Department of Oceanography, MS 3146, College Station, Texas 77843-3146, USA Search for other works by this author on: GSW Google Scholar Deborah J. Thomas; Deborah J. Thomas * 1Texas A&M University, Department of Oceanography, MS 3146, College Station, Texas 77843-3146, USA *E-mail: dthomas@ocean.tamu.edu. Search for other works by this author on: GSW Google Scholar Matthew Huber; Matthew Huber 2Purdue University, Department of Earth and Atmospheric Sciences, 550 Stadium Mall Drive, West Lafayette, Indiana 47907, USA Search for other works by this author on: GSW Google Scholar Robert Korty; Robert Korty 3Texas A&M University, Department of Atmospheric Sciences, MS 3150, College Station, Texas 77843-3150, USA Search for other works by this author on: GSW Google Scholar Stella C. Woodard; Stella C. Woodard 1Texas A&M University, Department of Oceanography, MS 3146, College Station, Texas 77843-3146, USA Search for other works by this author on: GSW Google Scholar L. Blake Jones L. Blake Jones 1Texas A&M University, Department of Oceanography, MS 3146, College Station, Texas 77843-3146, USA Search for other works by this author on: GSW Google Scholar Geology (2012) 40 (6): 527–530. https://doi.org/10.1130/G32886.1 Article history received: 02 Oct 2011 rev-recd: 21 Dec 2011 accepted: 11 Jan 2012 first online: 09 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 Ashley M. Hague, Deborah J. Thomas, Matthew Huber, Robert Korty, Stella C. Woodard, L. Blake Jones; Convection of North Pacific deep water during the early Cenozoic. Geology 2012;; 40 (6): 527–530. doi: https://doi.org/10.1130/G32886.1 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 The history of deep water formation and abyssal flow is poorly known but important to establish in order to develop a better understanding of changes in oceanic mass, heat, salt, and nutrient transport. North Atlantic high-latitude regions currently are the dominant deep water producers, but paleogeographic constraints, proxy interpretations, and physical models have suggested other modes for the past, such as those characterized by high-latitude Pacific sources, subtropical sources, or widespread, nonlocalized sources. Here we present new North Pacific Late Cretaceous–Paleogene Nd isotope data from fossil fish debris and detrital silicates, combined with results of coupled climate model simulations to test these hypothesized circulation modes. The data and model simulations support a circulation mode characterized by high-latitude, bipolar Pacific convection. Deep convection in the North Pacific, and likely the South Pacific, was most intense during the relatively "cool" portion of the Late Cretaceous–Paleocene and waned prior to the peak global warmth of the Early Eocene (ca. 52 Ma). You do not have access to this content, please speak to your institutional administrator if you feel you should have access.