On the Digermulen Peninsula‚ the succession starts with the classic Neoproterozoic glacial tillite of the Mortensnes Formation (Fig. 3). This tillite has traditionally been tentatively correlated by many workers (e.g.‚ Rice et al. 2011‚ and references therein) with the type ’Gaskiers’ glaciogenic succession in Newfoundland‚ which is between 584 and 582 Ma old‚ based on zircon U–Pb ages from intercalated ash beds (Bowring et al. 2002). The Mortensnes Formation is separated downwards from the ’Marinoan’
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As geologists‚ we examine layers of sediment on the Earth’s surface to approximate the dates of past geologic time periods. Ah sediment as you know is material like sand‚ gravel‚ fossil fragments that is transported by natural processes like wind ‚ water flow or the movement of glaciers. So sediment is transported and then deposited and it forms layers on the Earth’s surface over time. We examine these layers to learn about different geologic time periods including when they began and ended. For
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1) Would earthquakes of similar magnitudes in different populated regions of the Earth cause approximately the same levels of damage? In your discussions‚ consider both geologic and human-induced factors. The amount of damage caused by an Earthquake does not solely depend on the magnitude of the Earthquake. Factors such as population‚ geographic location‚ soil type‚ and the type of building material commonly used for construction in a region determine the extent of damage caused. If an Earthquake
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Space Exploration What is it and why is it important? Space exploration is scientific studies using scientific equipment in space and anything about it. There are different reasons why space exploration is important. We could discover new resources from other planets or the moon‚ other planets can be could be used when something happens to the earth and we need another place to stay on. Occupation Space exploration is a well-paid job because it could be very dangerous. You also
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Two general processes used to figure out the age of rocks is relative dating and radiometric dating. We will compare and contrast the strengths and weaknesses of both methods. According to Lutgens and Tarbuck‚ Relative dating is the process in putting events in their proper sequence. Relative dating is based on assumption‚ not able to give an accurate date but an estimated time period where the rock originated from. A Danish scientist‚ Nicolaus Steno is accredited for the Law of Superposition.
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Absolute dating methods are used to determine the age of materials. We need to understand how fossils are made so we can date them properly. There are five ways bones are fossilized. They are by permineralization‚ unaltered preservation‚ carbonization‚ authigenic preservation‚ and recrystalization (Shepherd). When a fossil is found you need to make sure that it can be preserved properly so it can stay in the same shape to enable research. Many steps are taken to prepare fossils and conserve them
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Where exactly is Oklahoma? When geographers speak of location‚ they are using two separate definitions‚ each with its own useful purpose. The first of these is Absolute Location. Absolute location refers to an exact‚ pinpointed location. Absolute locations involve some sort of measurement‚ whether it’s latitude and longitude‚ an address‚ the number of miles from an exact point‚ etc. Pinpointing Oklahoma on a map using absolute location involves locating latitude and longitude lines on the map. Looking
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Plate Tectonics Introduction Continental Drift Seafloor Spreading Plate Tectonics Divergent Plate Boundaries Convergent Plate Boundaries Transform Plate Boundaries Summary This curious world we inhabit is more wonderful than convenient; more beautiful than it is useful; it is more to be admired and enjoyed than used. Henry David Thoreau Introduction • • • Earth’s lithosphere is divided into mobile plates. Plate tectonics describes the distribution and motion of the plates. The theory
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| Uniformitarianism vs. Catastrophism | Lara Anderson | | Dr. Travis Bradshaw | PHSC 201-A19 | For much of history‚ humans have grappled with the question: Where do we come from? Today there are two main houses of argument which have many different names. They are called secular and religious‚ evolutionists and creationists‚ humanists and theists. However‚ each house subscribes to its own idea of how the world has come about and progressed through history. The secular/evolutionist/humanist
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The history of the Earth is categorized into four different geological time eras beginning with‚ the Precambrian Time (4.6 billion-544 million years ago)‚ the Paleozoic Era (544-248 million years ago)‚ the Mesozoic Era (248-65 million years ago)‚ and the Cenozoic Era (65 million years ago to the present). Eras are broken down further into smaller units called periods‚ which help scientists detect changes in Earth’s history. Geologists’s main sources of evidence for geological eras‚ and periods are
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