Pectinaria (Lagis) koreni (Malmgren) is an abundant, deposit-feeding, infaunal inhabitant of shallow-water marine environments in northern Europe. Laboratory experiments were performed to quantify the polychaete's sediment processing in 2 distinct sediments, 1 fine-grained and high in combustibles, the other coarse-grained and low in combustibles. Gut passage time and time to pseudodefecation w...

ground penetrating radar (gpr) method as a high resolution non-destructive geophysical method is used for detection of shallow subsurface targets. this method is based on the transmission of electromagnetic waves inside the earth and recording the reflected waves from the subsurface. as the method uses high-frequency electromagnetic waves in the frequency ranges of 12.5 to 2500 mhz (called gpr ...

The outcropping Cretaceous siliciclastic sediments in the Al Bauga area in Northern Sudan reach a maximum thickness of about 30 meter. They rest with angular unconformity on tilted Precambrian basement rocks and are capped by Tertiary-Quaternary basalts forming a type of nonconformity. The sedimentary sequence was subdivided into three major units separated by two disconformities. The lower uni...

Four sites (953−956) were drilled north and south of Gran Canaria during Leg 157. The penetrated pelagic and volcaniclastic sediments can be identified by their different chemical compositions. This paper focuses on the volcaniclastic deposits that were logged in Holes 953C, 955A, and 956B. The sediments in these holes are mainly composed of hemipelagic, fine-grained nannofossil oozes with inte...

Seventeen sites on the Amazon Fan were drilled during Leg 155. Although the oldest recovered sediment dates from isotopic Stage 8 (~0.25 Ma), our sampling concentrated on the last glacial cycle. Sites were correlated by seismic reflection profiles, paleomagnetic orientation and intensity, stable isotopes of planktonic foraminifers, and biostratigraphic methods. The Amazon Fan aggraded during lo...

Background: Land and water pollution by heavy metals is a universal issue. Although the pollution affects all countries, but its range and severity vary hugely. The pollution of the marine environment by heavy metals is a worldwide problem. Marine sediments can be sensitive indicators for monitoring contaminants in aquatic environments. Methods: The concentration of 10 elements (As, Cd, Cr, Cu...