What did the first Euro-American explorers do when they reached Yellowstone? Yep, more maps-like the map of Yellowstone Lake that was created during the first scientific exploration to what is now Yellowstone National Park in 1871. What did explorers do when they reached what were to them unknown lands? They made maps. Geology is the study of the Earth, and maps provide a simple form of data visualization. That means they are associated with specific locations on the Earth’s surface, and thus can be represented as particular points on a map. A single geologic event, like a landslide or a volcanic eruption, can yield terabytes of information! It’s an amazing volume that can be multiplied by the number of scientists that are working on a given project.Īlmost all these data are spatially constrained. Geologists, geophysicists, and geochemists generate mountains of data when studying geologic processes. Also shown are several of the places where the Hayden survey camped as they traversed around Yellowstone Lake. About 300 lead-sink soundings of lake depth were taken in this survey most locations where soundings were obtained are marked on this map (depth in feet). The area now known as West Thumb is referred to as the South West Arm on the map. ![]() The headwaters of the Snake River, Upper Valley of the Yellowstone River, and Pelican River are shown. Henry Elliott’s 1871 map of Yellowstone Lake ( ).
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