Hawai'i Physical Geography_ Volcanic Landforms _ GPH 112_ Intro to Phys Geography Lab (2024 Spring)

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2/14/24, 5:46 PM Hawai'i Physical Geography: Volcanic Landforms : GPH 112: Intro to Phys Geography Lab (2024 Spring) https://asu.instructure.com/courses/178332/quizzes/1339503?module_item_id=12755990 1/9 Hawai'i Physical Geography: Volcanic Landforms Due Feb 16 at 11:59pm Points 4 Questions 2 Available after Jan 29 at 12am Time Limit None Instructions You are welcome to watch this overview video about this volcanic landforms lab and the connected next lab about the creation of feral relief. The video does not explain how to do the problems, but explains how these different labs are connected to go from volcanoes to wild landscapes: The landforms on the Big Island of Hawai'i are incredibly special to physical geographers who focuses processes that generate landforms for several reasons: The rock type is almost all the same lava (basalt) derived from ocean crust. Related to this, the original slope of most of the Hawaiian volcano surfaces is remarkably similar, du fluid basalt flows making the "shield volcano" (dome-like) shape for much of the island's surface. Hawaiian basalt is one of those rock types that can be "dated". Basalt older than about 50,000 year dated directly by measuring the decay of radioactive potassium. Basalt younger than about 40,000 y can be dated by measuring the radioactive carbon (radiocarbon) in trees that were swallowed up (ru by lava flows. This is the first of a two-part lab that starts with the geomorphology of a shield volcano (like Mauna Loa left) that then turns into the wild feral relief created by erosion of that volcanic surface (like Kauai on th
2/14/24, 5:46 PM Hawai'i Physical Geography: Volcanic Landforms : GPH 112: Intro to Phys Geography Lab (2024 Spring) https://asu.instructure.com/courses/178332/quizzes/1339503?module_item_id=12755990 2/9 that has only a tiny bit of the original dome shape). This lab is about the original volcano geomorpholo next one is about creating the feral relief. Mauna Loa - what Kauai once looked like. Kauai - little left of the original shield volcano VOLCANIC LANDFORMS. This section of the lab has two questions where you: identify the volcanic landform (and its relief or source) in a matching question analyze a unique attribute of one of the big 5 shield volcanoes All the information you need is found below. But if you feel like you would like to review lecture conten basalt volcanic landforms. You can watch slide 5 through 30 in the GPH 111 volcano lecture . You w asked a logon ( gph111) and a password (gaia). If the lecture does not load, just refresh your browser. QUESTION: The format is matching, where you select the best match between the locat and the volcanic landform. In this question, you are given geographic coordinates scattered aroun Island of Hawai’i. Within the geovisualization game, you enter the coordinates in Fast Travel and go to t location. Then, you find the best match between the location and the volcanic landform. Your choices will be: Below - you will find some examples of the matching you will do in the first question. Note: If the feature has positive relief (goes up), then estimate its height using the highest elevation at the the lowest elevation around its base. If the feature is a negative relief (depression), then measure the high location at the edge and the lowest education at the bottom to estimate the maximum depth.
2/14/24, 5:46 PM Hawai'i Physical Geography: Volcanic Landforms : GPH 112: Intro to Phys Geography Lab (2024 Spring) https://asu.instructure.com/courses/178332/quizzes/1339503?module_item_id=12755990 3/9 You can see as a strip of darker material flowing down the side of a shield volcano. In this question, you will be asked to find the volcano that is the source of the lava flow. Just follow the lava flow uphill and when you can’t see it any more – that’s the source. It will be one of the five big shield volcanoes seen to the right: Basalt Lava flow from Mauna Loa (19.6715 -155.3718). In this example, the avatar is in the middle of the screenshot. Mauna Loa is the volcano to the upper left, and the avatar "hopped" up hill following the basalt flow to a location high on Mauna Loa. Calderas are made by collapse of a volcano into an emptied magma chamber. You will be asked the depth of the caldera, that you determine by having your avatar stand on the rim (write down the elevation) and then jump down to the bottom of the caldera (write down the elevation). Just subtract the bottom from the top. Kilauea Caldera (19.4222, -155.2494) ~ 150 meters deep In this example, the avatar is in the middle of the screenshot standing on the edge of the Kilauea caldera. A caldera is made via the collapse of the surface, typically into a void left when lots of magma erupts on the side of a volcano.
2/14/24, 5:46 PM Hawai'i Physical Geography: Volcanic Landforms : GPH 112: Intro to Phys Geography Lab (2024 Spring) https://asu.instructure.com/courses/178332/quizzes/1339503?module_item_id=12755990 4/9 Craters are made by the force of a volcanic eruption (or steam eruption). Craters can also be made by some collapse; but these craters are very different from the super big calderas made when the top of a volcano collapses into a void. Crater (19.6760, -155.8256) ~ 15 meters deep In this crater along a volcanic slope, the floor of the crater is roughly 15 meters from the surface surrounding it.
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