Vertical sediment core profile speciation for Fe‚ Mn‚ Ni‚ Co and Cr The range and the average concentration of Fe‚ Mn‚ Ni‚ Co and Cr in different fractions in cores MD and SH are given in the Table 2. In core MD‚ Fe‚ Mn‚ Ni‚ Co and Cr were highest in the residual fraction. Metals viz. Fe‚ Ni‚ Co and Cr were present in more than 65 % in the residual fraction‚ while Mn was around 40 %. Next to the residual fraction‚ Mn‚ Ni and Co were present in the Fe-Mn oxide fraction‚ while Fe and Cr in the organic
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modes associated with them‚such as symmetric and asymmetric stretches‚bends‚ rocks‚ and tortional modes. For MRZ‚ the C-H stretching Vibrations are observed at 3057‚ 3043‚ 3016 and 2999 cm-1. The asymmetric and symmetric stretching bands of CH2 are observed in the range from 2900 to 2700 cm-1 and this stretching band is mainly coupled with the CH3 stretching vibration. Mirtazapine has only one CH3 group. The C-H stretching vibrations of methyl are observed between 3000 and 2900 cm-1. A methyl group
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What are conditions like on the seafloor? It is in absolute darkness‚ with temperatures near freezing. The water is 3.5 kilometers high and exerts a pressure hundreds of times greater than atmospheric pressure on Earth. What is the main type of igneous rock found on the seafloor? Basaltic rock is heavy and sinks forming the world’s deep ocean basins. Describe the topography of the seafloor: shelf‚ slope‚ canyons‚ rise‚ and abyss. Continental shelf‚ the most shallow and accessible region‚ they cover
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Away from the coastal resorts the volcanic island of Lanzarote is a natural wonder full of surprises for the intrepid explorer. As you drive up the west coast of Lanzarote on the LZ 2 towards Timanfaya National Park make a left turn onto the LZ 703 as you come to the salt flats at Janubio and continue north towards the town of El Golfo. The scenic LZ 703 hugs the ocean on this part of Lanzarote and has been the backdrop for many a car commercial thanks to the crashing Atlantic waves and the way the
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Cause and Effect of Volcanoes Any natural opening in the Earth’s crust‚ called a fissure‚ where melted rock‚ ash‚ gases‚ and steam come out is called a volcano. Volcanoes look like mountains‚ but they are really flat land that is pushed upward because of the pressure below the earth. The pressure comes from hot magma and gases that build up below the earth’s surface and that work up to the surface through cracks in the earth’s plates. As it is forced up to the surface‚ the gases and magma push
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First‚ we will discuss Mount St. Helens Volcano. Mount St. Helens is a stratovolcano located in the Pacific Northwest of the United States within Washington State. A stratovolcano is also known as a composite cone‚ which is “a large symmetrical structure that consists of alternating layers of explosively erupted cinders and ash interspersed with lava flows (Lutgens‚ 2012.)” Due to the cone shape of the volcano‚ stratovolcanoes are known for creating large explosive eruptions that can eject vast amounts
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INTRODUCTION: The Ring of fire (figure 1) is a horse shoe shaped fault line. This fault line is prone to Earth quakes and volcanic eruptions. The ring of fire Is home to 452 volcanoes and 75% of the worlds dormant and active volcanoes live on the Ring. PLATE TECTONICS Plate tectonics is a theory that the earth is split up in to different areas of the world. They glide on the mantle of the earth the plates act like a hard ridged shell (fig 2 plate tectonics) Some of the plate tectonics move very
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Volcanos are mighty mountains that rise from the ground but these beautiful beast come with a catch. When they “wake up” they can tear a whole island or town to pieces and pieces. Most volcanoes cause tons of destruction including flames and lava when awakened this roaring beast isn’t so peaceful. When volcanos form they form just like a regular mountains actually they are they are just regular mountains.That is why when they erupt it shocks many people because they all thought the possibility
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With reference to two volcanic events that you have studied from contrasting areas of the world‚ compare the nature of the volcanic hazard and its impact. Mount St Helens erupted on the 18th May 1980 at 9am and is an active strata volcano Washington State USA‚ a MEDC. Where as on 18th July 1995‚ during the daytime‚ Montserrat‚ a LEDC during the day‚ Montserrat’s Soufrière Hills composite volcano of a height 1050m‚ meaning sulphur hills‚ dormant for centuries‚ erupted and produced a phreatic eruption
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A stratovolcano is also known as a composite volcano. It is built up by many layers called strato‚ lava‚ tephra‚ pumice and volcanic ash that has become hardened. Stratovolcanoes have a steep profile and they have many explosive eruptions that cause craters that have collapsed called calderas. The lava flow from a stratovolcano normally cools before it has the chance to spread. This is due to the viscosity of the lava being extremely high. One of the most famous stratovolcanoes is Mount Vesuvius
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