Isostatic Study guides, Revision notes & Summaries

EAPS 112 - Chapter 17 Exam Questions & Answers 2023/2024 Which timeframe is marked by extensive glaciation as well as widespread tectonism and volcanism? a. Pleistocene b. Oligocene c. Pliocene d. Neogene e. Paleogene - ANSWER-a. Pleistocene Why is it difficult to interpret the terrestrial stratigraphy of glaciers? a. Glaciers deposit, but don't erode sediments. b. Glacial melt transports too much sediment away from the deposition site. c. Previous advances and retreats obscure la...

Subduction A geological process in which one edge of a crustal plate is forced downward into the mantle below another plate and melted Asthenosphere The lower part of the mantle Lithosphere The upper part of the mantle and the crust Atmosphere The air and area that is above the crust and below space Core The extremely hot, solid, and dense center of the earth, which is believed to be composed of iron and nickel Mantle Between the core and the crust, liqui...

Explain some factors that create an erosional coastline (4 main factors) - Answer- - Rock hardness- softer and uncemented sediment and rock more vulnerable to cliff retreat e.g. boulder clay along Holderness -Geological orientation- Discordant coasts have different rates of erosion resulting in headlands + bays, e.g. Eastern Dorset coast of Isle of Purbeck Wave type- Destructive waves are stronger and therefore when water is driven into cracks in rocks it can compress air and cause blasts (Hy...

and convergent boundaries - ANS plates that come together, possibly forming subduction zones therefore forming ocean trenches, volcanic activity, trenches, and earthquakes (->tsunamis) divergent boundaries - ANS plates going apart, causing seafloor spreading and forming volcanoes, mid-ocean ridges, abyssal plains, and hydrothermal vents transform boundaries - ANS plates moving in opposite directions, frequently causing earthquake activity ocean trenches - ANS ...

Describe how a reduction in energy may lead to sediment sorting. (6) - Sorting is the process by which the standard deviation of clast size within a sediment becomes reduced. - High energy environments (e.g. shallow marine) are able to transport a large range of sediment sizes by traction, saltation, and suspension. - When energy is reduced larger particles are deposited, but finer material continues to be transported, therefore continuing the sorting process. - Sorting may occur by LSD, on ...

CSUF GEOL 310T-09 Henderson Plate Tectonics 100% Solved seafloor spreading The formation of new ocean crust as a result of magma pushing upward and outward from Earth's mantle to the surface. Alfred Wegener A German scientist who proposed the theroy of continental drift Gondwanaland The continents of Africa, South America, India, Australia, and Antarctica when all the continents were a single landmass. Mantle The layer of hot, solid material between Earth's crust and core. Made of olivine a...

AS GEOGRAPHY Paper 1 Physical Geography and People and the Environment Time allowed: 1 hour 30 minutes For Examiner’s Use Section Mark A B TOTAL Materials For this paper you must have:  a pencil  a rubber a ruler. You may use a calculator. Instructions  Use black ink or black ball-point pen.  Fill in the boxes at the top of this page.  Answer either Question 1 or Question 2 or Question 3 in Section A.  Answer either Question 4 or Question 5 in S...

Geologic Hazards Question and answers 100% correct 2023/2024Asthenosphere - correct answer Under the lithosphere, it is the weak upper mantle where isostatic adjustments are made, magma generated, and seismic waves are strongly attenuated Attenuation - correct answer A reduction in the amplitude of seismic waves produced by divergance, scattering, reflection, and absorption Avalanche - correct answer A large mass of snow, ice, rock, of mixtures of the above, falling, sliding, or f...

Catastrophism theory that all surface features were due to intermittent catastrophes Uniformitarianism theory that the changes in the earth's crust during gelogical history have resulted from the action of continous and uniform processes Pangea the original supercontinent Laurasia then nortern continent after pangea Gondwanaland the southern continent after Pangea geological evidence rock units on different continents with similar structure style fossil evidence fossils found on th...

Age of Earth 4.6 billion years Seismometer Instrument used to measure horizontal or vertical motion during an earthquake. Uniformitarianism The past geological events can be explained by forces occurring today Alfred Wegener A German scientist who proposed the theroy of continental drift Geologic evidence of continental drift -rock units on different continents have similar structure Mid Ocean Ridges -submerged mountain regions -longest continuous feature of the earths crust -tensio...