Lab Report on Granulometry
Order ID 
53563633773 
Type 
Essay 
Writer Level 
Masters 
Style 
APA 
Sources/References 
4 
Perfect Number of Pages to Order 
510 Pages 
Description/Paper Instructions
EES 2021 is a project that will take place in the year
GRANULOMTERY LABORATORY NO. 2
Name________________________________________________ Date_________________
The most basic physical feature of sediment is grain size. Geologists and sedimentologists analyze patterns in surface processes related to the dynamic circumstances of movement and deposition using the information on sediment grain size. A grainsize analysis’s goals are to precisely measure individual particle sizes, estimate their frequency distribution, and compute a statistical description that sufficiently defines the sample.
Particlesize analysis procedures and equipment must be quick, accurate, and produce highly repeatable results. Sampling methodology, storage conditions, analysis methods, equipment, and, most importantly, the operator’s capability all restrict the accuracy of these measurements. To produce the finest potential results, extreme caution and attention to detail are required. There is no single approach or procedure that will produce the most ideal grain size data in all instances, as there is with most sorts of sedimentological analyses. Over time, several types of analyses have been developed to accommodate various types and sizes of samples as well as the motivations for conducting the study. A settling tube, sieves, and a Camsizer, a device that measures grains using two cameras, are among these ways.
You will examine data from the optoelectronic Camsizer analyzer in this lab (you can see it when you visit our lab).
Grain Size Distributions (Part 1)
Use the Excel spreadsheet that comes with this lab.
Using a correct equation (taught in class), convert micrometers to phi units such that all values are compiled in yellowhighlighted boxes in column C of your spreadsheet.
To calculate the numbers in the yellow boxes, insert equations for each size statistic (see Table 1 in this handout) (Line 7; columns E through I in your spreadsheet)
– Kurtosis, Kurtosis, Kurtosis, Kurtosis, Kurtosis, Kurtosis, Kurtosis, Kurtosis, Kurtosis, Kurto
SEDIMENT STATISTICS (TABLE 1) (Folk, 1968)
Note that 50 refers to the phi size that corresponds to 50% of the cumulative frequency, and so on for different phi sizes and cumulative frequency percentages.
While raw particle size data can tell you a lot about a sediment sample, sedimentologists have established a set of other criteria to help with sediment sample description, analysis, and comparison. Mean grain size, median, sorting, skewness, and kurtosis are some of these.
The standard formulae described in Folk’s (1968) Petrology of Sedimentary Rocks are used to calculate the grain size statistics of the sediment samples. Table 1 shows the equations for each of the sediment statistical measurements (be sure to use the phi size from column C rather than micrometers):
Mean Grain Size: A sample’s average grain size (in mm); values for the current data set typically range from:
Median Grain Size: the phi size that corresponds to 50% of the cumulative frequency; for this research, it was converted to mm.
Sorting: also known as “Graphic Standard Deviation,” this is a measure of the degree of scatter – a sediment sample’s “uniformity” or “homogeneity.”
Skewness: a measure of symmetry that evaluates the preponderance of specific sediment fractions (i.e. a symmetrical distribution of frequencies of different particle sizes, would look like a normal bell curve; skewness is a distortion of this curve to left or right).
Kurtosis: a measure of a sample’s range of particle sizes that evaluates the % frequency distribution of particle sizes in terms of a particular type of deviation from the normal distribution.
Part 2: Analyzing the Data
1. Make a graph of FREQUENCY DISTRIBUTION (see the solid line in Fig. 1B below). Column A should be used for the Xaxis, and column C or D should be used for the Yaxis.
Figure 1: Typical graphic representations of grainsize data. A) Table of grain sizes. B) From the data in A, a histogram and a frequency curve were plotted. C) Arithmetic ordinate scale with a cumulative curve. D) A probability ordinate scale for a cumulative cure.
2. For each size statistic derived in Part 1 (from row 7) right below each number, provide a description (e.g., fine sand, poorly sorted, negatively skewed, leptokurtic) (in row 8). Use the following descriptions and grainsize chart from Figure 2:
Figure 2: Sorting, skewness, and kurtosis terminology. In your sample descriptions, you should utilize this terminology.
3rd Part: Interpretation
Interpret the depositional habitat of your sample (point bar, dune, floodplain, beach, reef, deep sea, etc.) based on your description in Part 2. (remember to use several statistics to give you the most accurate result). Sphericity (column E) may also be beneficial.
GRAPH AS A SINGLE EXCEL SPREADSHEET (use your last name in naming the file).
RUBRIC
QUALITY OF RESPONSE 
NO RESPONSE 
POOR / UNSATISFACTORY 
SATISFACTORY 
GOOD 
EXCELLENT 
Content (worth a maximum of 50% of the total points) 
Zero points: Student failed to submit the final paper. 
20 points out of 50: The essay illustrates poor understanding of the relevant material by failing to address or incorrectly addressing the relevant content; failing to identify or inaccurately explaining/defining key concepts/ideas; ignoring or incorrectly explaining key points/claims and the reasoning behind them; and/or incorrectly or inappropriately using terminology; and elements of the response are lacking. 
30 points out of 50: The essay illustrates a rudimentary understanding of the relevant material by mentioning but not full explaining the relevant content; identifying some of the key concepts/ideas though failing to fully or accurately explain many of them; using terminology, though sometimes inaccurately or inappropriately; and/or incorporating some key claims/points but failing to explain the reasoning behind them or doing so inaccurately. Elements of the required response may also be lacking. 
40 points out of 50: The essay illustrates solid understanding of the relevant material by correctly addressing most of the relevant content; identifying and explaining most of the key concepts/ideas; using correct terminology; explaining the reasoning behind most of the key points/claims; and/or where necessary or useful, substantiating some points with accurate examples. The answer is complete. 
50 points: The essay illustrates exemplary understanding of the relevant material by thoroughly and correctly addressing the relevant content; identifying and explaining all of the key concepts/ideas; using correct terminology explaining the reasoning behind key points/claims and substantiating, as necessary/useful, points with several accurate and illuminating examples. No aspects of the required answer are missing. 
Use of Sources (worth a maximum of 20% of the total points). 
Zero points: Student failed to include citations and/or references. Or the student failed to submit a final paper. 
5 out 20 points: Sources are seldom cited to support statements and/or format of citations are not recognizable as APA 6^{th} Edition format. There are major errors in the formation of the references and citations. And/or there is a major reliance on highly questionable. The Student fails to provide an adequate synthesis of research collected for the paper. 
10 out 20 points: References to scholarly sources are occasionally given; many statements seem unsubstantiated. Frequent errors in APA 6^{th} Edition format, leaving the reader confused about the source of the information. There are significant errors of the formation in the references and citations. And/or there is a significant use of highly questionable sources. 
15 out 20 points: Credible Scholarly sources are used effectively support claims and are, for the most part, clear and fairly represented. APA 6^{th} Edition is used with only a few minor errors. There are minor errors in reference and/or citations. And/or there is some use of questionable sources. 
20 points: Credible scholarly sources are used to give compelling evidence to support claims and are clearly and fairly represented. APA 6^{th} Edition format is used accurately and consistently. The student uses above the maximum required references in the development of the assignment. 
Grammar (worth maximum of 20% of total points) 
Zero points: Student failed to submit the final paper. 
5 points out of 20: The paper does not communicate ideas/points clearly due to inappropriate use of terminology and vague language; thoughts and sentences are disjointed or incomprehensible; organization lacking; and/or numerous grammatical, spelling/punctuation errors 
10 points out 20: The paper is often unclear and difficult to follow due to some inappropriate terminology and/or vague language; ideas may be fragmented, wandering and/or repetitive; poor organization; and/or some grammatical, spelling, punctuation errors 
15 points out of 20: The paper is mostly clear as a result of appropriate use of terminology and minimal vagueness; no tangents and no repetition; fairly good organization; almost perfect grammar, spelling, punctuation, and word usage. 
20 points: The paper is clear, concise, and a pleasure to read as a result of appropriate and precise use of terminology; total coherence of thoughts and presentation and logical organization; and the essay is error free. 
Structure of the Paper (worth 10% of total points) 
Zero points: Student failed to submit the final paper. 
3 points out of 10: Student needs to develop better formatting skills. The paper omits significant structural elements required for and APA 6^{th} edition paper. Formatting of the paper has major flaws. The paper does not conform to APA 6^{th} edition requirements whatsoever. 
5 points out of 10: Appearance of final paper demonstrates the student’s limited ability to format the paper. There are significant errors in formatting and/or the total omission of major components of an APA 6^{th} edition paper. They can include the omission of the cover page, abstract, and page numbers. Additionally the page has major formatting issues with spacing or paragraph formation. Font size might not conform to size requirements. The student also significantly writes too large or too short of and paper 
7 points out of 10: Research paper presents an aboveaverage use of formatting skills. The paper has slight errors within the paper. This can include small errors or omissions with the cover page, abstract, page number, and headers. There could be also slight formatting issues with the document spacing or the font Additionally the paper might slightly exceed or undershoot the specific number of required written pages for the assignment. 
10 points: Student provides a highcaliber, formatted paper. This includes an APA 6^{th} edition cover page, abstract, page number, headers and is double spaced in 12’ Times Roman Font. Additionally, the paper conforms to the specific number of required written pages and neither goes over or under the specified length of the paper. 


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