Silt

Laboratory Report 2: Soil Texture, Bulk density and Porosity Introduction Soil Texture The classification of soil texture is determined by the percentage of each of the soil separates. Soil separates are mineral particles smaller than 2mm, and these particles are sand, silt and clay. These textures are separated by the size of the particles, with sand being the largest between 2mm and 0.05mm, silt at between 0.05mm and 0.002mm, and clay at <0.002mm. The size of the particles influences the porosity and other characteristics of the soil. The soil texture determines the fertility of the soil, its water holding capacity and how the soil can be managed. The purpose of this lab was to become familiar with determining soil texture by using various methods. Particle Density and Bulk Density Particle density is the measure of the density of the soil solids, with no pore space. This is important as it helps increase understanding of the soil texture and helps to determine the bulk density and porosity. Bulk density is the measure of relative soil compaction, as expressed in total mass per total volume. This helps determine the porosity of the soil and how compacted the soil is. As the bulk density increases so too does the compaction of the soil and the porosity decreases. The purpose of the lab was to…

The Clear Quartz is the mixture of silicon and two oxygen molecules (silicon dioxide, or SiO2), it is also the precursor of over 500 stones as they start as the clear quartz and gain their color with inclusions and mineral deposits that are added while forming, these minerals are designated as “silicates.” The Clear Quartz crystal can occur in two different ways, one being the hexagonal crystals in masses and druses, and the other being dense fibrous material that has no visible crystals.…

Index (PI) There is no method available to determine the plasticity index. The Plasticity index of soil BH3 is obtained from the difference between Liquid Limit (LL) and Plastic Limit (PL).  II.b. Results • Visual Classifications (see Figure 3 : Unified Soil Classification Chart) BH1: SP (poorly graded sands, gravelly sands, little or no fines) A soil sample of BH1 is included in coarse grained soils. More than halfof coarse fraction is smaller than 2.36mm and predominantly one size or a…

Chapter 5 explains different kinds of sediments, their origin, color and its contents. For example, biological sediments are white or cream color. Deep-sea clays are ranging from red to chocolate brown color because of the oxidation or rusting of iron within the sediments to form “iron oxide” which is basically rust and nodular sediments are dark brown and black. However boulders, cobbles, and pebbles made of better-quality particles which is sand, silt, and clay and they are defined by particle…

These tests were commissioned by the Environmental Protection Agency (EPA) in response to a proposed chemical plant being built over an important groundwater supply. This report will summarize the finding of the potential damages of a chemical spill and attempt to address how in the event of a chemical contamination in the groundwater should be dealt with. The proposed site for the chemical plant is divided into five different layers of sediments that vary in grain size and thickness. Layers…

The Badlands is in the Southeastern corner of South Dakota, located to the East of the Black Hills. It was declared a national monument in 1929, and then was declared a national park though an act of congress in 1978. (Stoffer 2) The park is most known for its rugged, desolate appearance, with jagged rocks and interesting formations. The core of the “badlands” (meaning the “badlands” associated with Badlands National Park) is part of a dissected plateau region bounded by the Cheyenne River (to…

The purpose of this lab was to test for which soil type would be best for food production. The tests included Forest Soil, Floodplain Soil, and Garden Soil. We predicted that garden soil will have the best properties for food production because we expected it to have the highest value of nutrients for plants to grow in and a soil composition that is fit for food production (ex. Water Holding, etc). To test our hypothesis, we ran tests measuring Percent Water Content, Organic Material, Nitrates,…

approximately 0-15% and hayland (National Cooperative Soil Survey 2000). II. Soil Forming Factors The parent material is loess which is a silt-sized soil that was distributed by wind…

Not only did ancient Egypt have a sufficient amount of food to supply for themselves, they also had such a surplus, that they could supply their neighbors with their grain. First and foremost, having a food surplus wasn’t the most common because usually civilizations only had what was necessary, instead of extra. Also, Egypt is in the middle of a desert, so them having a surplus in grains is far from what would be expected. Egypt is sometimes referred to as the “Breadbasket” of the ancient world…

Sumerians lived near two rivers: The Tigris and the Euphrates. The rivers were vital to their agriculture system as they depending on the flooding of the rivers for silt, which was a fertilizer for their crops. They ended up building dams and canals and just had a very complex irrigation system in general. This allowed them to grow abundant amounts of wheat and barley. The Egyptians worshipped the Nile, a river that they considered a god as it provided them with food by watering plants, which…