نتایج جستجو برای: lacustrine environment
تعداد نتایج: 519568 فیلتر نتایج به سال:
Lacustrine mudrocks are composed of minerals and organic matter (OM). The origin preservation OM two controlling factors the hydrocarbon generation capacity mudrocks. It is a key method in source rock research to study deposition process from view sedimentary environment. Following this idea, reason for discrepancy production between northern southern part Dongpu Sag analyzed discussed. lacustr...
The reduction of Fe during bacterial anaerobic respiration in sediments and soils not only causes the degradation of organic matter but also results in changes in mineralogy and the redistribution of many nutrients and trace metals. Understanding trace metal patterns in sedimentary rocks and predicting the fate of contaminants in the environment requires a detailed understanding of the mechanis...
The macroinvertebrate inventory was carried out using samples taken at 6 stations distributed along the longitudinal profile of Soubré lake and downstream part Sassandra river. Sampling monthly from July 2019 to February 2020. A total 20581 individuals belonging 117 taxa (genera species), 60 families, 17 orders classes were recorded. macrofauna largely dominated by molluscs, which accounted for...
The Mars Exploration Rover Spirit and its Athena science payload have been used to investigate a landing site in Gusev crater. Gusev is hypothesized to be the site of a former lake, but no clear evidence for lacustrine sedimentation has been found to date. Instead, the dominant lithology is basalt, and the dominant geologic processes are impact events and eolian transport. Many rocks exhibit co...
We present a comprehensive set of Se concentration and isotope ratio data collected over a 3-yr period from dissolved, sediment-hosted, and organically bound Se in a Se-contaminated lake and littoral wetland. Median isotope ratios of these various pools of Se spanned a narrow isotopic range (delta80/76Se(SRM-3149)) = 1.14-2.40 per thousand). Selenium (VI) reduction in the sediments is an import...
This research considers a simulating crowds into a passenger vessel Evacuation in the face of fire and the Effect of Human Behavior and Building Characteristics on Evacuation, the most crucial aspect of a passenger`s vessel safety in the face of fire is the possibility of safe and efficient escape. The study of attitudes and behavior of passengers in relation to reactions to alarms, regulations...
impressive Quaternary lacustrine deposits are present as terrace remnants throughout the Karakoram Mountains, northern Pakistan. They are mainly the result of damming of drainage systems during glacial advances or by catastrophic mass movement deposits. The longevity of most lakes is relatively short, in the order of years to tens of yeaa, but sedimentation rates are extremely high as a consequ...
Introduction: Ancient lake deposits and valley networks on Mars provide strong evidence that its surface was once modified by liquid water [1,2,3,4,5], but the extent of that modification is still debated. Ancient lacustrine deposits in Milna Crater (23.4 S, 12.3 W; Fig. 1) provide insight into the timescale and fluid volume required to construct fluvially derived sedimentary deposits near the ...
Introduction: Ancient lake deposits and valley networks on Mars provide strong evidence that its surface was once modified by liquid water [1,2,3,4,5], but the extent of that modification is still debated. Ancient lacustrine deposits in Milna Crater (23.4 S, 12.3 W; Fig. 1) provide insight into the timescale and fluid volume required to construct fluvially derived sedimentary deposits near the ...
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