The abundance of parent phenanthrene may be different for the differences in the input of organic matter in source rocks and/or thermal maturation level of sedimentary organic matter.
Radiocarbon dates were obtained by accelerator mass spectroscopy (AMS) performed on samples from different levels of the sedimentary profiles (Table 1).
Up to the present, there is only one 14,000 BP dating, based on organic matter recovered in the middle levels of the sedimentary sequence that contains the footprints of the Pleistocene fauna.
A Multisol is defined as a soil or paleosol body that, maintaining an identifiable continuity, bifurcates into two or more layers located at different levels of the sedimentary column.
It is the youngest of the many Animikie layers, a layer of sedimentary rocks.
The Kapuas Kecil River, one of the two branches in the lower reach of the Kapuas River, showed higher levels and diagenesis of sedimentary organic matter due to input from anthropogenic sources and increased marine organic matter near the mouth.
This study shows that different stretches along the river exhibit different levels and composition of sedimentary organic matter, as well as different carbon dynamics, which is directly attributable to the varying landscapes and quality of organic matter.
(b) Discrete element model of sedimentary layer.
The harbour of Ceuta, North Africa, differs substantially from conventional harbours with only one entrance since it has two opposing entrances and a channel which increases water renewal and local currents, with implications for sedimentary processes, levels of pollution and oxygen concentration.
A major drop in sea level produced the unconformity (an interruption in the deposition of sedimentary rock) at the Mississippian-Pennsylvanian boundary and an associated global extinction event, particularly among the crinoids and ammonoid cephalopods.
