Sedimentary Rocks

Sedimentary Rocks Sedimentary rocks are from sediments collected from the streams and buried beneath in a process commonly referred to as geologic. This is due to geographical effects such as the tectonic forces controlling the progression of weathering. The process leaves a complicated record thus the different kind of sediments form the deposits. (Strahler, 13) The categories include Clastic, Chemical and Biogenic. Water and wind sorts some sediment to be almost of the same size thus commonly referred to as â€Å"well-sorted†.Advertising We will write a custom essay sample on Sedimentary Rocks specifically for you for only $16.05 $11/page Learn More Conversely, there are particles of different sizes especially those sorted by the ice and huge mass wasting with a reference of â€Å"even unsorted† or â€Å"poorly sorted†. Sediments take a variety of individual shapes from rounded, sphericity or angular. Well-sorted sediments are caused by prolonged erosio n or weathering. Sedimentary rocks can also form from the biogenic deposits such as the foraminifer formed from planktons cells that covers wide area of the ocean floor or the chemical deposits such as the salts formed from magnesium, potassium or sodium chloride found near salt lakes like Lake Bonneville in Utah. The volcanic sediments form clasts, which are originally volcanic. (National Atlas of United States) Formation of sedimentary rocks Deposits and burring of these types of sediments in a process known as â€Å"lithification† causes the formation of new rock known as the sediment rock. (U.S. Department of Interior Survey, 2010) The rock depends on the material or type of sediments and the process. Formation of rock beds occurs from sedimentary particles, which lay in distinct strata. The composition of the sedimentary rocks overtime changes depending in the deposition process and mineral composition. This aspect is what makes the adjacent strata different from the pre ceding one. The boundary between the layers referred to as the â€Å"bedding surface† thus the origin of the term â€Å"Rock Bed†. (Strahler, 13) The presence of the bedding surface enables the geologists to be in a position of telling the ages and is the indication that the rock was once sediments thus the term â€Å"Sedimentary Rock†. Various processes are involved in the formation process: â€Å"lithification†. They include compaction a process that reduces the pore space in the sediments because of the weight of the superimposing layer. Secondly is the cementation process where substances dissolves in pores through which water precipitates to form matter that joins the layers strongly together. Lastly is the crystallization process where new crystalline minerals bond the old ones.Advertising Looking for essay on geology? Let's see if we can help you! Get your first paper with 15% OFF Learn More The classification of sedimentary rocks falls into the following categories. Siliciclastic rocks or clastic made of sand quatz commonly referred to as resistant minerals like Lithics and fledspar mixed with clay minerals, which form from withering of iron oxides such as feldspar: orthoclase or kaolinite. Chemical and Biogenic or biochemical rocks form from liquid solutions such as calcite that reacts with hydrochloric acid to exist as either micrite; muddy line or limestone. (U.S. Department of Interior Survey, 2010) The clastic rocks is a composition of visible grains of quartz sand and clay grains mixed together while the chemical and biochemical forms from splitting of minerals that are in solution state. Silica is made of materials that do not dissolve in water and have silica as the main component transported either as sediments at the bottom of the water or suspension. This aspect makes the clay grains and visible sand grains to mix and deposit together. On the other hand, the minerals that are in solution st ate easily dissolve in water. They deposit together without traces of silica. The geologists tend to specialize on the siliciclastic rocks because of the various groupings that others have hypothetically made discovery. (Strahler, 13) The mineral deposits that are in solution form separates from the solutions through precipitation from the water thus concentrating the salts. This helps to classify them as chemical rocks while the biochemical rocks are as a result of plants and animals remains especially those involved with marine life, which draws them from the solutions for formation of the skeletons, which eventually die to form the sediments. Other biochemical rocks include the coal and peat but forms in the presence of clastic rocks such as sandstones or shales. The integration of minerals to form sediments makes the classification difficult due to inconsistency involved. This means that researchers have an uphill task to come up with a straightforward way of classifying them. National Atlas of the United States. â€Å"Distribution of Sedimentary Rocks.† 2010. Web. Strahler, Alan. H. â€Å"Introduction to physical geography† (Fifth Ed). 2009Advertising We will write a custom essay sample on Sedimentary Rocks specifically for you for only $16.05 $11/page Learn More U.S Department of the Interior survey. â€Å"U.S Geography Survey.† 2010. Retrieved from https://www.usgs.gov/science-support/osqi/yes/resources-teachers/

Do these cliché career tips actually work

Do these clichà © career tips actually work Does this sound familiar? You’re trying to figure out your future and you’re in the midst of some serious career planning, when all of a sudden you’re inundated on all sides by a hurricane of advice on what to do, what not to do, and how to move forward. The truth is, when it comes to career planning most people think they have all the right answers when they’re dishing out clichà ©d and uninformed advice to others, and if you’re the unwitting recipient of these tired tips from everyone in your life you’re likely feeling overwhelmed and unsure of where to turn.Don’t bother doing a blind search on the Internet for career tip guidance- you’ll only encounter the same sort of tired advice that contradicts itself and takes all sides and forms depending on where you look. So, with all of this â€Å"career noise† at every turn, how do you know what to believe and follow?You should always do what you love.This is a nice thought, and it would be an interesting world if everyone got to do exactly what they want to do or love. But the truth is, reality sometimes holds a different view of how our careers should play out. While it can be a good idea to pursue a dream, it can be foolhardy to pursue it forever- after all, a noble pursuit like following your dream won’t pay your bills. Besides, it’s possible to find happiness and fulfillment while pursuing a backup plan. Use logic and reality as your guide when deciding between pursuing your dream and choosing an acceptable alternative.Don’t leave your current job until you have a new one lined up.This job advice tidbit is as old as it gets- but does that necessarily mean it’s sound advice? This tip gets particularly murky if your job environment is especially toxic or unhealthy. Sure, it makes sense to have a steady paycheck and job history while job hunting and until something new comes along, but life is short and if you’re re ally in a difficult or miserable spot, then it may be worthwhile to see if you can survive if you left your job. Besides, it’s easier to job hunt when you have more time to focus on it. Once again, fully weigh your situation, along with the pros and cons, and decide wisely.Don’t leave a job before you’ve been there for at least a year.Everyone has heard this one before, but is it actually sound advice? Employers like to work with people who stick around since it’s so expensive to recruit and train them.†However, they also suggest that reality might not be so black and white: â€Å"While you want to avoid having  lots  of short stays in your job history, most people will understand if there was a particular situation that wasn’t great. If it’s your boss or the day-to-day nature of your work that’s  not what you expected, keep in mind that there are sometimes options to change positions without leaving the organization. Sta rt by looking for new responsibilities and discussing a  transfer to another team. If, after that, you’re still itching to get out, update your resume and re-start your job hunt.†If you change your field you’ll have to start at the bottom.Are you finding yourself in a position where you’re thinking of a complete career overhaul? If so, then you’ve undoubtedly encountered this advice, which came from the notion that you always have to â€Å"pay your dues† when starting out in an industry and work your way up from the bottom. But whoever originally came up with this one obviously never thought about the value of transferable work experience and skills. According to The Muse, â€Å"if you’ve already put time into your current career, you probably have more skills that transfer from field to field than you recognize. Not just that, but your years of work have also taught you how to network, which can play a role in getting off the groun d floor.† Bottom line: recognize your value and transferable skill set when considering what positions in other fields make sense for you, and don’t let this tired old clichà © deter you from pursuing a new career in a new field.There you have it- a fresh look on some old career tip clichà ©s. Use the information provided here to help declutter your brain when it gets too full of competing advice and you’ll be on your way to make smart career decisions in no time.