Fossil Story Essay Example for Free

Fossil Story Essay Northeastern Illinois has a great deal of geological history hidden beneath the surface. If you just take a trip to the Larson Quarry or even Pit 11 you can find some interesting rock formations as well as fossils in them. But, if you cannot get to these areas, this paper can tell you what you can find in 5 different locations in Northeastern Illinois. We will be looking at Larson Quarry, Thornton Quarry, Mazon River, Pit 11, and the Glacial Drift which is at Palos Hills and throughout the surface of the Chicago area). The first stop is the Larson Quarry. This is located near DeKalb, Illinois. The specific coordinates are 42? N, 88? 35’ W at 920 feet. This site contains specimens from 450 million years ago which include trilobites like Flexicalymene, brachiopods like platystropia, rafnesquina, leptaena, the horn coral streptelasma, an unnamed bivalve, bryozoans, various crinoid stem parts, the cephalopod endoceras, and the gastropods cyclonema and malcurites. The rock types and formations that were found around these fossils were Cincinnatian Maquoketa Shale and Galena Dolomite. â€Å"The Maquoketa shale, which contains seams of argillaceous dolomite†¦and ranges from highly to slightly weathered, with the highly weathered portions having the consistency of a stiff clay and are extremely fissile† (Preber). These fossils were preserved by replacement as well as mold and cast. The Mazon River, which is near Morris, Illinois is located at 41? 20’N, 88? 30’W at 525 feet. This site had fossils from 290 million years ago and included seed ferns like alethopteris and neuropteris, true fern Pecopteris, horsetail rush parts calamites (trunk), and annularia (leaf whorl), lycopod tree (club moss) parts and bark lepidodendron, and leaf lepidophylites. The rock types were shale and sandstone as well as coal and the formation was Francis Creek. The Illinois State Museum writes in an article about how Francis Creek formation is formed: â€Å"Much of the area that we now call Illinois was a mixture of swampy lowlands and shallow marine bays. From the northeast flowed at least one major river system. The river(s) built large deltas through the low swamps and into the shallow bays. The mud that the river(s) carried was deposited in these deltas and bays. This mud turned into a rock called the Francis Creek Shale†. The preservation type was impressions in concretions. Next is Pit 11 which is the Mazonia/Briadwaood State Fish and Wildlife area at 41? 15’N, 88? 15’W at 590 feet. These specimens were found from 290 million years ago. The fossils include the same basic plants as the Mazon River. They also include jellyfish like the essexella, the shrimp belotelson, clams like edmontia and aviculopectin, an unnamed marine annelid worm, a possible fish fossil coprolite, the infamous Tully Monster: tullymonstrum, and the echinoderm sea cucumber holothurian. The rock types that held these fossils were shale and sandstone, as well as coal. These were in a Francis Creek formation. These fossils were preserved by impressions in concretions. It becomes quite apparent that there are certain biases in how and what fossils are preserved. Some species, notably Pecopteris unita, are found with fertile structures nearly half of the time while others like the more common true fern, Pecopteris acadica, are rarely seen with fertile structures being preserved at all† (Mazon Creek†¦). This tells us how these fossils were formed. Thornton Quarry, at coordinates 41? 35’ N, 87? 35’ W at 590 to 250 feet, is located on the south side of Chicago. This Quarry was formed 420 million years ago and includes fossils such as the trilobite calymene, brachiopod pentamerus, corals like favosite and halysites, an unnamed crinoid stem and the cephalopod moorecoceras. The rock types that were here were limestone-dolomite in Niagaran Racine Dolomite with fossils in mold and cast. â€Å"The most famous reef unearthed in the Chicago area is the coral reef†¦Debris from the growing reef began to be deposited and cemented. The reefs contained sea lilies, animals resembling horseshoe crabs, and ancient ancestors of squids and octopuses up to ten feet long. The ashy, gray-white limestone mined from the Thornton Reef contains the fossils of these animals† (Herweck). The reason that there are multiple types of coral is because this area was at the bottom of the Silurian Sea and molded well into the limestone. Lastly, we visit Palos Hills which includes the Glacial Drift. This area was from ~15,000 years ago and showed deposits of unconsolidated pebbles, sand, silt ad clay which contain mixed rocks of 400 million to 1 billion years old at 41? 41’N, 87? 50’ W at 772 feet. The fossils found here are mammoth or mastodon remains that are preserved as unaltered hard parts. There are also mixed marine fossils including crinoid stems, brachiopods, corals like hexagonaria (Petosky Stone) and trilobite parts, where were preserved as mold and cast r replacement. The glacial till include striated rocks composed of a mixture of many types including sedimentary (limestone/dolomite), igneous (granite, basalt) and metamorphic (gneiss). The formation was Valparaiso Moraine. â€Å"At this time, glacial ice covered the entire Chicago region†¦. the active ice sheet retreated into the Lake Michigan basin, although stagnant, melting ice remained behind. The ice then rapidly re-advanced to the†¦Valparaiso moraine in the western Chicago region† (Grimm). The glaciers that were in Chicago made a big impact on picking up rocks and sand and dirt from other regions and bringing it into the area, which is a reason why you may find interesting things in the area and that rocks age from 400 million to 1 billion years ago. The areas that we can find an assortment of fossils and rock formations are abundant in Illinois and have a wide variety of ages. From this summary, you can see what type of rock are around Northeastern Illinois and what type of animals, plants, and rocks were around from different periods and what type of environment they must have lived in.

Women and the American Revolution Essay -- Essays on American Revoluti

Women generally did not fight in the revolution, and the traditional status of Eighteenth Century women meant that they were not publicly able to participate fully in the debates over the revolution. However, in their own sphere, and sometimes out of it, woman participated fully in the revolution in all the ways that their status and custom allowed. As the public debate over the Townshend Acts grew more virulent, women showed their support for the cause of freedom by engaging in certain "feminine" pursuits. A common practice was to publicly ban English imports, especially tea, from their homes. Creating homespun, that is, the tedious creation of homemade fabric from spinning and weaving their own cloth, was another public way of showing support for the cause of freedom. During the American Revolution, many women were directly affected by the fighting since their father or brothers or husband or sons were off fighting. This meant that the women often had to take full responsibility for the family farm or business. More and more women became "deputy husbands" and represented the family in legal or commercial transactions. In some instances, as the fighting came close to their lands, women even had to take up arms to defend their person or property when the occasion demanded. Several women in Groton, Massachussetts, put on their husbands' clothing, armed themselves with muskets and pitchforks and defended the Nashua River Bridge. They captured a notoriou...

Quiz Computer Forensic & Investigation Essay

Hanley Strappman, 37, was trying to learn about the Computer and Digital Forensics program at Champlain College. He was able to obtain some files, which he put on a floppy disk. To disguise his espionage, he decided to smuggle the floppy back home after altering the files so that they couldn’t be read using the ordinary DOS/Windows file manager. His deception was discovered, however, and the floppy has been recovered. Some of your counterparts have already tried to examine the disk to no avail. Upon discussions with Hanley, he has boasted that there are three files on the disk but that â€Å"You’ll never know what I got!!† You are being provided with a forensically true and accurate copy of Hanley’s floppy disk. You are asked to examine the floppy disk and provide answers to a few questions about the integrity of the data that was recovered (in terms of maintaining the evidentiary chain), the recovery of certain information, and any actions that the suspect may have taken to intentionally delete, hide and/or alter data on the floppy disk. Good Luck! Using the software tools provided to you in class, audit the disk and conduct a full analysis of any artifacts found on the media. The following questions must be completed in the time allotted: The Questions 1. What is the name and address of the person to whom Hanley wrote a letter? Dr. John Watson 8295 Martha Lane Los Alamitos, CA 90720 2. Who is in the picture that Hanley obtained? Lewis Carroll, Edith, Lorina and Alice Lidell 3. What is the information that Hanley supplied in a password-protected form? A file named â€Å"curriculum† in Microsoft Excel format. 4. What are the names of the files on the floppy? Each was hidden or obscured in a different way; indicate how you found the files and how you recovered the information. The file name is cc_stuff.exe Change the format to the .zip format and enter the password to get the information 5. Where did you find the password? By using PRTK software, inside the evidence image at the pwd

Concerns of Renewable and Nonrenewable Resources - 1141 Words

In our environment, there are many concerns on how to make the world a better place to live. One of the biggest issues is our energy and power resources. Green energy is renewable energy that is environmental friendly, and forms of green energy include geothermal, hydropower, solar, and wind energy. Nonrenewable resources, as the name implies, are resources for which there is a limited supply, and forms of nonrenewable resources include fossil fuels and nuclear energy. Much of our world is using fossil fuels, but in the process of achieving everyday needs, we are destroying our environment. In my opinion, people should cut down on the usage of fossil fuels and depend more on green energy. This will stop thousands of harmful pollutants and toxics from entering our atmosphere in the form of CO2. There are three major forms of fossil fuels: coal, oil, and natural gas. Fossil fuels are considered nonrenewable resources because fossil fuels get consumed quicker than they can reform. Fossil fuels were formed millions of years ago during the Carboniferous period. During that time period, the earth was filled with algae and other forms of plant life. As plants started to die, they sank into the depths of the ocean. Over hundreds of years, the sunk material formed a component called peat. As the years passed away, other minerals and sediment covered the peat forming a sedimentary layer. As the rock or sedimentary layer squeezed the peat, the peat squirted out liquid which over aShow MoreRelatedGrowing energy demands, rising energy costs, and increasing concern about global climate change900 Words   |  4 Pagesand increasing concern about global climate change have sparked strong interest in utilizing alternative energy technologies, such as nuclear power, hydrogen energy, biofue ls, and renewable energy. Unlike renewable energy, some alternative energy technologies are not mature enough to be used as a main energy source (biofuels and hydrogen energy). 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