scholarly journals The geology and mineralogy of Ritchey crater, Mars: Evidence for post-Noachian clay formation

2014 ◽  
Vol 119 (4) ◽  
pp. 810-836 ◽  
Author(s):  
Vivian Z. Sun ◽  
Ralph E. Milliken
Keyword(s):  
Clay Formation

Twenty-five years' geotechnical observation and testing in the Tertiary Boom Clay formation

Géotechnique ◽  
2007 ◽  
Vol 57 (2) ◽  
pp. 229-237 ◽  
Author(s):  
F. Bernier ◽  
X. L. Li ◽  
W. Bastiaens
Keyword(s):  
Boom Clay ◽  
Clay Formation

A Numerical Simulation of Diffusion Experiment in Clay

2011 ◽  
Vol 322 ◽  
pp. 353-356
Author(s):  
Qing Chun Yang
Keyword(s):  
Numerical Simulation ◽  
Opalinus Clay ◽  
Isotropic Case ◽  
Diffusion Experiment ◽  
Deep Geological Repository ◽  
Transport Distance ◽  
Geological Repository ◽  
Geological Formation ◽  
Clay Formation ◽  
Anisotropic Case

Safety assessment of nuclear waste disposal in a deep geological repository requires understanding and quantifying radionuclide transport through the hosting geological formation. Determining diffusion parameters under real conditions is necessary for the performance assessment of a deep geological repository where high level wastes are placed for safety disposal. The in situ diffusion and retention (DR) experiments are designed to study the transport and retention properties of the Opalinus clay formation. In this paper, a scoping numerical simulation is performed in Opalinus Clay, The simulated results for all the traces illustrate that the maximum transport distance perpendicular to the bedding is larger in the isotropic case and those along the bedding is larger in the anisotropic case. Tracer depletion in the isotropic case is a little larger than in the anisotropic case. Deuterium and iodide can be detected in the other interval but strontium can’t. Since the length of injection interval is shorter than the transport distance, the anisotropy effect is clearly measurable. This numerical simulation of diffusion experiment aims at contributing to the optimum design of the experiment. The results of this experiment will provide additional insight into the role of diffusion anisotropy and sorption parameters for radionuclides in clays.

scholarly journals Associated skeletal and dental remains of a fossil odontaspidid shark (Elasmobranchii: Lamniformes)from the Middle Eocene Lillebælt Clay Formation in Denmark

2013 ◽  
Vol 61 ◽  
pp. 37-46
Author(s):  
Bitten Bolvig Hansen ◽  
Gilles Cuny ◽  
Bo Wilhelm Rasmussen ◽  
Kenshu Shimada ◽  
Perri Jacobs ◽  
...  
Keyword(s):  
Middle Eocene ◽  
Low Energy ◽  
Tooth Morphology ◽  
Sea Floor ◽  
Energy Deposit ◽  
Total Length ◽  
The Individual ◽  
Clay Formation

A set of associated vertebrae and teeth of a fossil shark was collected from the lower Lutetian (Middle Eocene) part of the Lillebælt Clay Formation in Denmark. Its vertebral morphology indicates that the individual belongs to an odontaspidid lamniform shark. Although it is here identified as Odontaspididae indet., its tooth morphology suggests that the fossil shark possibly belongs to an undescribed taxon closely allied to Odontaspis or Palaeohypotodus. Based on comparisons with extant Odontaspis, the fossil individual possibly measured about 333 cm in total length. The disarticulated nature of the specimen in a low-energy deposit indicates that the shark carcass must have been lying on the sea floor for some time before its burial. The fossil individual was found along with a possible shed tooth of another indeterminate odontaspidid taxon.

Chemical aspects of quick-clay formation

1966 ◽  
Vol 1 (6) ◽  
pp. 415-431 ◽  
Author(s):  
Rolf So¨derblom
Keyword(s):  
Quick Clay ◽  
Clay Formation
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