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      Rheology of Natural Sediments and Its Influence on the Settling of Dropstones in Hemipelagic Marine Sediment

      1 , 2 , 1 , 3 , the IODP 340 scientists
      Earth and Space Science
      American Geophysical Union (AGU)

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          Most cited references34

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          Thixotropy—a review

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            Creeping motion of a sphere through a Bingham plastic

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              An attempt to categorize yield stress fluid behaviour.

              We propose a new view on yield stress materials. Dense suspensions and many other materials have a yield stress-they flow only if a large enough shear stress is exerted on them. There has been an ongoing debate in the literature on whether true yield stress fluids exist, and even whether the concept is useful. This is mainly due to the experimental difficulties in determining the yield stress. We show that most if not all of these difficulties disappear when a clear distinction is made between two types of yield stress fluids: thixotropic and simple ones. For the former, adequate experimental protocols need to be employed that take into account the time evolution of these materials: ageing and shear rejuvenation. This solves the problem of experimental determination of the yield stress. Also, we show that true yield stress materials indeed exist, and in addition, we account for shear banding that is generically observed in yield stress fluids.
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                Author and article information

                Journal
                Earth and Space Science
                Earth and Space Science
                American Geophysical Union (AGU)
                2333-5084
                2333-5084
                March 2020
                March 2020
                : 7
                : 3
                Affiliations
                [1 ]Department of Earth and Planetary ScienceUniversity of California Berkeley CA USA
                [2 ]Geoscience DepartmentUniversity of Montana Missoula MT USA
                [3 ]Insitut de Physique du Globe de Paris Paris France
                Article
                10.1029/2019EA000876
                1bc31405-6729-4849-8a34-075641bd4613
                © 2020

                http://creativecommons.org/licenses/by/4.0/

                http://doi.wiley.com/10.1002/tdm_license_1.1

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