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Full Description
Exploring how oceanic hydrothermal systems influence seawater chemistry
The chemical exchange between seawater and the underlying ocean crust occurs at temperatures ranging from about 2oC on the seafloor to more than 500oC 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.
Contents
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
Hydrothermal Systems 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
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:
A Review 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
Snowball Earth? 297
A. Mark Jellinek and Adrian Lenardic
14 Geochemical and Geophysical Controls on Hydrothermal Fluxes on Habitable Worlds 325
Benjamin M. Tutolo and Nicholas J. Tosca
15 The Role of Hydrothermal Processes in the Evolution of Early Earth and Aquaplanets 347
Takazo Shibuya, Shuya Tan, Sakiko Kikuchi, Hisahiro Ueda, Ken Takai, and Yasuhito Sekine
Index 383
