Autorentext

Laurence A. Coogan, University of Victoria, Canada Alexandra V. Turchyn, University of Cambridge, United Kingdom Ann G. Dunlea, Woods Hole Oceanographic Institution, United States of America Wolfgang Bach, University of Bremen, Germany

Klappentext

GEOPHYSICAL MONOGRAPH SERIES Hydrothermal Circulation and Seawater Chemistry Links and Feedbacks The chemical exchange between seawater and the underlying ocean crust occurs at temperatures ranging from about 2°C on the seafloor to more than 500°C deep in the crust. These hydrothermal reactions strongly influence the chemical composition of seawater and, in turn, seawater chemistry impacts hydrothermal exchange; these feedbacks play a crucial role in the Earth system. Hydrothermal Circulation and Seawater Chemistry: Links and Feedbacks explores on- and off-axis hydrothermal systems and their effects on ocean chemistry and the Earth system. Volume highlights include:

• Hydrothermal fluxes dependent on boundary conditions such as climate and sedimentation history
• Low-temperature, off-axis systems that have large fluxes of elements
• Observational and experimental perspectives of on-axis hydrothermal processes
• Methods for tracking hydrothermal and oceanic processes using sediments or isotope proxies

• The role of oceanic hydrothermal systems in planetary-scale cycles on Earth and beyond The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.

  Inhalt

  List of contributors vii

  Preface xi

  1 A Brief Introduction to Potential Links and Feedbacks Between Hydrothermal Processes and Seawater Chemistry 1
  Laurence A. Coogan, Alexandra V. Turchyn, Ann G. Dunlea, and Wolfgang Bach

  2 Geochemical Controls on the Composition of Hydrothermal Vent Fluids at Mid-Ocean Ridges 19
  William E. Seyfried Jr., Guy N. Evans, and Yanlu Xing

  3 Experimental Geochemistry Techniques Applied to the Interpretation of High-Temperature Inorganic Geochemistry of Mid-Ocean Ridge Hydrothermal Systems 45
  Drew D. Syverson and Guy N. Evans

  4 The Influence of Seawater Mixing on the Element Budgets in Basalt-Hosted Mid-Ocean Ridge HydrothermalSystems 71
  Alexander Diehl and Wolfgang Bach

  5 A Review of Macrobiology-Microbiology Interactions at Mid-Ocean Ridge Hydrothermal Systems and Their Role in Mediating Element Fluxes into the Ocean 91
  Laurel R. Yohe and Drew D. Syverson

  6 Instruments and Observations Needed for Better Understanding of Hydrothermal Fluxes Across the Seafloor 111
  Lianfu Li, Shichuan Xi, and Xin Zhang

  7 The Marine Sediment Archive of Hydrothermal Activity 137
  Ann G. Dunlea, Jennifer L. Middleton, and Frank J. Pavia

  8 The Effect of Seawater Sr Concentration on the Hydrothermal Alteration of Oceanic Crust: Sr Isotopes in Dikes of the Early Paleozoic Bay of Islands Ophiolite 169
  Daniel A. Stolper, Daniel E. Ibarra, Amanda L. Bednarick, Claire E. Bucholz, Laurence A. Coogan, Kathryn M. Gillis, Max Lloyd, John N. Christensen, and Donald J. DePaolo Copyrighted Material

  9 Low-Temperature Ridge Flank Heat and Fluid Fluxes, Contributions to Global Biogeochemical Cycles, and Archives of Changing Global Conditions 187
  Rosalind M. Coggon, Aled D. Evans, Lewis J. C. Grant, and Damon A. H. Teagle

  10 The Effect of Off-Axis Hydrothermal Systems on the Oceanic Mg Budget as Revealed by Mg Isotopes: AReview 225
  Netta Shalev and Danielle Santiago Ramos

  11 Seafloor Weathering: Lessons from Studies of the Critical Zone 253
  Louis A. Derry

  12 A Historical Perspective on Long-Term Global Biogeochemical Box Models 263
  Preston Cosslett Kemeny, Alex Krause, and Lee Kump

  13 Extreme Supercontinental Climate Control: Punctuated Mantle Thermal Mixing and a Sustained SnowballEarth? 297
  A. Mark Jellinek and Adrian Lenardic

  14 Geochemical and Geophysical Controls on Hydrothermal Fluxes on Habitable Worlds 323
  Benjamin M. Tutolo and Nicholas J. Tosca

  15 The Role of Hydrothermal Processes in the Evolution of Early Earth and Aquaplanets 345
  Takazo Shibuya, Shuya Tan, Sakiko Kikuchi, Hisahiro Ueda, Ken Takai, and Yasuhito Sekine

  Index 381