The marine clay comprises a soft upper marine clay layer overlying a stiffer lower marine clay layer.
Finally, the thickness of the layers in the crystal structure of montmorillonite and the patterns generated by XRD indicate that following purification, the clay comprised crystal layers on the top of each other (Fig. 7).
The core displayed, with increasing depth, a microbial mat, a goethite-rich sediment from the flowing acidic ferric sulfate-rich stream (FlowMG1a – FlowMG1c) and underlying quartz sands and clays (comprised of minor kaolinite and microcline).
Results show that clastic sediment is dominated by silt and fine sand, with clay mineralogy comprising primarily Fe-rich smectite.
Deeper aquifer occurs below this clay bed, comprising fine to medium sand; and the aquifer is laterally extensive and is marked as Pleistocene age.
Our systems were created by constructing a clay tactoid comprising four hexagonal sheets, each composed of (110), (010), and (001) surfaces, with lateral dimensions measuring approximately 98 Å by 104 Å, each sheet separated by 9.5 Å.
Thus, the purpose of this study is to investigate the effect of OM on the dispersion-aggregation behavior of river suspended colloids using the model organic matter (humic acid and purified chitin) and model clay mineral particles (< 1 μm montmorillonite, a common clay mineral type comprising the suite of clay minerals in marine and estuarine fine-grained sediments).
It is a silty-clay soil comprised of 39.1% clay, 50.8% loam and 10.1% sand, with an organic matter content of 7.87%, Cation Exchange Capacity (CEC) of 20.1 cmol+ kg−1 and the water content at field capacity was 51%.
In the unaltered state the clay is comprised of smectite, maghemite, superparamagnetic goethite, and hematite, with a possible trace of kaolinite.
