Paleomagnetism is a powerful tool for establishing an almost continuous chronostratigraphy for an entire region. When combined with other dating methods, absolute or relative, it can be used to develop a regional reference chronostratigraphic framework. During the summer of 2016, several piston cores were collected along the Atlantic side of the Le...
Published in Biological trace element research
The concentration of 19 metal and non-metal elements in two fishes (Liza subviridis and Sphyraena jello) and associated sediment-seawater from the northern part of the Persian Gulf was measured. The samples were gathered from two industrial ports, one commercial port, and one residential port. The metal accumulation in the muscle and liver of fishe...
Published in Environmental Monitoring and Assessment
Sediments from Lake Mariut, Egypt, after its rehabilitation, and its anoxic diverted polluted drains were subjected to five sequential steps to define different geochemical fractions of eight studied metals. Results cleared out that 30–50% of its total Cd and total Co contents are easily bioavailable with a high-risk assessment code (RAC) to enter ...
Published in Frontiers of Environmental Science & Engineering
We determined the effects of quartz sand (QS), water treatment plant sludge (WTPS), aluminum-based P-inactivation agent (Al-PIA), and lanthanum-modified bentonite (LMB) thin-layer capping on controlling phosphorus and nitrogen release from the sediment, using a static simulation experiment. The sediment in the experiment was sampled from Yundang La...
Published in Geo-Marine Letters
The shallowest sediment of three mud volcanoes (MVs) located in the middle slope of the Gulf of Cádiz, Anastasya, Pipoca and St. Petersburg, have been seasonally studied during June and December 2016. These structures are locally important contributors of many biogeochemical active substances to the water column, with a special attention in the emi...
MEDUSA is a time-dependent one-dimensional numerical model of coupled early diagenetic processes in the surface sea-floor sediment. In the vertical, the sediment is subdivided into two different zones. Solids (biogenic, mineral, etc.) raining down from the surface of the ocean are collected by the reactive mixed layer at the top. This is where chem...
Sediment is an essential component of water and river systems. The anthropogenic alteration of sediment fluxes in the world’s rivers is one of the principal markers of the Anthropocene, the new geological epoch characterized by human influence at the planetary scale. In spite of its environmental and historical importance, water and river histories...
The morphology of rivers and deltas, like many features of the Earth’s physical geography, is today subject to dramatic and rapid changes due to human actions. Deprived of sediment from their basins and besieged by rising sea levels, many deltas are at risk of complete disappearance. Despite a rich historical scholarship on rivers, we know little a...
Published in Arabian Journal of Geosciences
The contents of 16 kinds of polycyclic aromatic hydrocarbons (PAHs) listed on US EPA’s Priority chemical list in the sediment cores taken from the center of Bosten Lake in Western China were analyzed, and dated with 210Pb and 137Cs in order to reconstruct the history of PAHs sedimentation in Bosten Lake in the period of 1945~2018. Pollution sources...
Published in Arabian Journal of Geosciences
Sediment cores collected representing main channel and subchannel mudflats of Mandovi estuary were analyzed for sediment components, total organic carbon (TOC), the bulk metal concentration of Fe, Mn, Zn, Co, and Pb, and their geochemical phases. The sediment of the subchannel was characterized by relatively high average clay and concentration of M...
