Dead plants and animals, along with minerals already at the locations help to create the sedimentary rocks and their unique characteristics. The Three Categories There are three different categories of sedimentary rocks that classify what materials the rocks are comprised of and also what process created them. The first category is Clastic Sedimentary rocks. There are four subclasses of clastic sedimentary rocks being; conglomerate, mudstone, sandstone, and shale (Murck, Skinner, & Mackenzie, 2008). These rocks reflect the properties of the sediment that it came from and this category is distinguishable by the grains that are contained within the rock.
Dry hot deserts lie in a subtropical region. The arid dry wind that blows across this land produces erosion that has a significant impact on landforms in the desert. The air in the desert does not contain much density, so it can therefore carry grains of sands through the wind. This can cause abrasion on rocks giving them a distinctive polished type surface texture and shaped with curves. These types of rocks are known as abraded rocks.
It had recently rained. Color Mostly dark brown with some parts of lighter red Texture/ consistency Clumpy- big parts, but finer particles. Tends to stick, but could be moisture Composition Silt at top: 5 mL- grassy, light, medium sized particles Clay: 63 mL- light red, fine, no visible particles Sand at bottom: 32 mL- dark, coarse particles Moisture Weight of moist soil: 54.9 g Weight of dry soil: 39.5 g Soil moisture: 38.9% moisture Porosity 9 mL of water out of 55 mL = 16.36% pore space Percolation rate Water at start: 27 mL Water at end: 17 mL Time: 360 sec Percolation rate: 17/360= .0472 mL/sec pH ~8 Analysis: Test Observations/data Texture/ consistency Consistency of data shows it could be clay or maybe loam. Composition The soil composition was shown to be clay according to the handout provided. While performing the test and inverting the tube, some soil was lost, and this may have affected our results.
Science Lab Report | Date: November 2,2010 | Period:1 | | 1: The effect of soil type on absorbency 2: The effect of soil type on percolation rate Problem1: What is the effect of soil type on the absorbency of the water? 2: What is the effect of soil type on the percolation rate? Independent Variable1: Soil type 2: Soil type Dependent Variable1: Absorbency 2: Percolation rate Constants: Amount of soil, Amount of water, Same bottle. Hypothesis1: If clay soil is used, then it will absorb the most water. 2: If clay soil is used, then the percolation rate will be the fastest.
The vessels in the central chamber contained charred fruit seeds [3]. A large hewn stone platform is located on the back walls of both chambers. The left chamber contains a three tiered hewn stone platform with vessels arranged in it [2]. A large pair of clay feet was centered on the platform in the central chamber [3]. The feet were surrounded by soil containing charred bits of wood.
Provide drainage for fluids by allowing liquid to flow within the open spaces. 3. Why are clay materials often used as liners or cover material? Clay materials are often used as liners and cover material because their natural composition – low permeability due to their low hydraulic conductivity and natural with the ability to adsorb contaminants thus reducing their toxicity. 4.
(the 1st two), through the processes of weathering, metamorphism etc. (a) Essential minerals: These are the major constituents of the rock which help in the diagnosis of the rocks types. The disappearance of these minerals would cause the relegation of the rock to another type. (b) Accessory minerals: These are the minor constituents of a rock and their presence has no bearing on the nomenclature of the lock. The minerals commonly occurring in igneous rocks may be broadly classified into felsic and mafic varieties.
Not only can sinking air not produce rain, but when it reaches the ground it absorbs water from the soil and vegetation, creating even more arid conditions. We find deserts where this air descends. In fact, at about 30° North, hold the Sahara, the
They need it for food and living. The soil in these areas is incredibly rich and the land is flat and treeless, most of this biome has been turned into farms or ranches. The most common soil in this area is the black earth and the chestnut soil. The black earth (Chernozem): It is regarded as the optimum soil for agriculture as they are deep, rich in organic matter, retain moisture, and have an ideal crumb structure with well-formed peds. After intensive ploughing, chernozems may require the addition of potassium and nitrates.
Organic sedimentary rocks are made up of organically derived sediments. These sediments are normally made up of body parts from plants and animals. Examples of organic sedimentary rocks include many limestones and coal. Organic rocks are classified by geologists by composition. Sedimentary rocks give information of the place it was deposited.