Semeniuk & Semeniuk: Wetland sedimentary fill - particles, sediments, classification 
Figure 7. Paired annotated photomicrographs of grain mounts and mud particle mounts of the gravel-sized, sand-sized, and the fine¬ 
grained fractions of wetland sediments to illustrate their characteristics. For correlation of these photomicrographs with the description 
of the wetland setting and the wetland sediments, see Appendices 2 & 3. Scale bar on all photomicrographs of the sand fraction is 10 
mm. Scale bar on all photomicrographs of fine-grained sediment is 100 pm. A & B: Sample No. 15 from Lake Mungala. A. Sand fraction 
of wetland sediment showing bleached and orange quartz sand grains. B. Mud-sized phyllosilicate minerals (arrow 1), quartz silt 
(arrow 2), and sponge spicule (arrow 3) comprising the fine-grained fraction of the sediment. C & D: Sample No. 18 from Melaleuca 
Park. C. Sand fraction of wetland sediment showing bleached quartz sand grains, and vegetation (root) fibres (arrowed). D. Hash of 
diatom frustule fragments and plant matter (dark grains) comprising the fine-grained fraction of the sediment. E & F: Sample No. 20 
from Casuarina Swamp. E. Sand fraction of wetland sediment showing bleached quartz sand grains, fine sand-sized diatomite 
intraclasts, vegetation (root) fibres (arrow 1), and a rounded intraclast of diatomite (arrow 2). F. Hash of diatom frustule fragments 
comprising the fine-grained fraction of the sediment. G & H: Sample No. 32 from Bollard Bullrush Swamp. G. Sand and gravel fraction 
of wetland sediment showing bleached quartz sand grains, and mollusc gravel-sized and sand-sized skeletons. H. Quartz silt (arrow 1), 
sponge spicule and spicule fragments (arrow 2), and mud-sized phyllosilicate minerals (arrow 3) comprising the fine-grained fraction of 
the sediment. 
155 
