geology of kenai fjords

Muna Kalati

Arches and spires form from the erosive action of waves. Convection currents are at work within the Earth. Exposed areas reveal buckled layers of ancient sediment. Visiting Kenai Fjords National Park. Core Science Systems; Ecosystems; ... National Park Service map of Kenai Fjords (Public domain.) For more information on the NPS Geodiversity Atlas, contact us. Source: Data Store Saved Search 2916. Geodiversity refers to the full variety of natural geologic (rocks, minerals, sediments, fossils, landforms, and physical processes) and soil resources and processes that occur in the park. The water carried dissolved minerals such as iron, silica, arsenic, and gold. At the same time I would attempt to produce a time-lapse film of this little-known area. It became a national park in 1980 to preserve the fjord and rainforest ecosystems, Harding Icefield, abundant wildlife and historical and archeological remains, and to provide visitor access. The fractures in the rock filled swiftly with jets of superheated water from deep in the Earth. The park's dynamic geology includes spectacular mountains with great glaciers flowing down between them to the sea, as well as awesome fjords that provide a habitat for thousands of nesting seabirds and seafaring mammals. A National Park Ranger will be on board to narrate your cruise and point out wildlife such as whales, sea otters, sea lions, puffins, and more. Mysteries of Movement For example, during the 1964 Great Alaska Earthquake, the coast of Kenai Fjords dropped between 3 and 8 feet. See more ideas about Kenai, Alaska, Kenai fjords national park. In the process of their formation, hot silica-rich fluids penetrated the young rocks and then crystallized to form milky white quartz veins. Kenai Fjords—Glaciers and Glacial Features, Alaska Division of Geological & Geophysical Surveys, Next Chapter: NPS Geodiversity Atlas—Kennesaw Mountain National Battlefield Park, Georgia, Previous Chapter: NPS Geodiversity Atlas—Katmai National Park & Preserve, Alaska. Overview. It was heated and pressed into a new form. Our 6 Hour Kenai Fjords National Park Cruise explores the world of whales, wildlife, and glaciers found in Kenai Fjords National Park. The affinity birds seem to have for granite is one of many ways that bedrock influences the life found on its surface. The center of the Earth is a tremendously hot core of iron and nickel. This 6-hour cruise explores Kenai Fjords National Park and visits an actively calving tidewater glacier in beautiful Aialik Bay. These precipitated out, forming white and brown streaks across the darker bedrock. Where glaciers have carved the bedrock into impossibly steep cliffs, the slate crumbles once the ice melts away - but the granodiorite stands, its sheer surfaces draped with waterfalls. Step aboard a 95-foot-long (29-meter) non-smoking cruise vessel designed with comfort in mind. This trip is going to take you to some of the most spectacular places in Alaska, including Kenai Fjords National Park, Denali National Park, Wrangell-St. Elias National Park, Chugach State Park, and the … Granodiorite is of a lighter color than the ocean sediment rocks. The bedrock of Kenai Fjords National Park was carried north by the action of the tectonic plates. On the east side of the bay, Cape Resurrection presents a massive, sheer cliff to the pounding of the waves. The fractures in the rock filled swiftly with jets of superheated water from deep in the Earth. It is also more resistant to weathering, such as by the action of glaciers upon its surface. With more time and more pressure, the shale becomes slate. A NPS Soil Resources Inventory project has been completed for Kenai Fjords National Park and can be found on the NPS Data Store. To search for additional information, visit the Data Store. Mud, transformed by heat and pressure, becomes shale, a fine-grained, dark-colored stone with many thin layers. Geology; Mapping, Remote Sensing, and Geospatial Data; Minerals; Natural Hazards; Oceans; Planetary Science; Water; Mission Areas. In certain places, it was also broken. Sea lions, too, congregate on smooth granitic slabs washed by ocean swells to mate, give birth, and rest. The data layers (feature classes) that comprise the Digital Geologic Map of Kenai Fjords National Park and vicinity, Alaska include: KEFJGLF (Geologic Line Features), KEFJGOL (Geologic Observation Localities), KEFJFLT (Faults), KEFJMIN (Mine Point Features), KEFJDKE (Linear Dikes), KEFJGLG (Geologic Units), KEFJGLGA (Geologic Contacts), KEFJGSL (Geologic Sample Localities) and KEFJASL … These segments of rock moved from their original home are called terranes. Field data was collected in July 2015 from James Lagoon, a 30 m deep drowned cirque valley adjacent to McCarty Fjord in the Nuka Bay region of Kenai Fjords National Park. On a longer timescale, sea level has risen and drowned the coast of the park. Source: Data Store Saved Search 2988. If you are a hard working, adventurous minded individual seeking seasonal employment, come join our team! Crustal Collision The rocks that make up Kenai Fjords National Park have sometimes been carried great distances. The Harding spills out in all directions in the form of glaciers. This movement disrupts the crust, breaking it into pieces and moving them around. This information supports science-based geoconservation and interpretation in the NPS, as well as STEM education in schools, museums, and field camps. Beneath the splendor, larger forces are at work. The aim was to do an 18 day route packrafting and backpacking through one of the world’s most dramatic landscapes. In Kenai Fjords National Park, over half of the landmass is covered by the enormous Harding Icefield, a thousand-foot block of ice that dates back to the last Ice Age. If there is sand mixed with the original mud, it may become greywacke instead. As park glaciers retreat, more bedrock is exposed. Kenai Fjords This study contributed baseline information regarding the framework geology, coastal change, and archaeological record along the fjord-indented coastlines of southcentral Alaska. The rock here is pillow basalt, a type of igneous rock that formed when lava flowed out underneath the water and cooled rapidly. Includes both internal and external Earth processes and related topics such as climate change, earthquakes, volcanic eruptions, coastal processes, and mineral and energy resources. In the heyday of the last Ice Age, which began about 25,000 years ago, ice built up in the curve of every peak, gouging out cirques; high valleys that nourished glaciers. Continental plates are pieces of crust visible as the continents of the Earth. The varying rock of the fjords underwrites the spectacle seen above- in one place eroding into graceful arches, in another withstanding the ocean's constant blows. The collision of plates builds mountains at their edges, and the build-up and release of stress at the boundaries causes earthquakes. See more ideas about Kenai fjords, Kenai, Fjord. Major Marine Tours - Kenai Fjords Cruise: Wildlife and geology - See 6,079 traveler reviews, 2,032 candid photos, and great deals for Seward, AK, at Tripadvisor. The bubbled texture of the cliff provides an ideal habitat for nesting birds like black-legged kittiwakes and horned puffins. You can watch our adventure in Kenai Fjords on YouTube: Alaska: Glaciers, Whales, and Bears | Kenai Fjords National Park The roughly 9-mile hike to view the icefield took most of the day, and included plenty of stops to watch wildlife, including a herd … Kenai Fjords National Park is an American national park established in 1980 by the Alaska National Interest Lands Conservation Act.The park covers an area of 669,984 acres (1,046.9 sq mi; 2,711.3 km 2) on the Kenai Peninsula in south-central Alaska, near the town of Seward.The park contains the Harding Icefield, one of the largest ice fields in the United States. 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