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glacial erratics in seattle

Erratics can range from large boulders to smaller stones and pebbles. The boulder was carried to this location by a huge glacier that was fed by ice flowing from Snoqualmie Pass and the drainages that now hold Lake Kachess and Lake Cle Elum. A glacial erratic is glacially-deposited rock differing from the size and type of rock native to the area in which it rests. From I-5 in Everett, head east on US 2 for 2 miles. Glacial Erratics – Remnants of the Ice Age. Glacial erratics dot a field in Yellowstone National Park. The retreating ice sheet dropped this massive rock at its current location about 12,000 years ago. It is an important symbol in American history. Displaced by ice-rafting. It measures 34 feet tall and 78 feet in length with a circumference of 210 feet. Basalt erratic with underlying lake silts west of Grand Coulee, Washington David Tucker has posted some great write ups on glacial erratics including a write up of a huge erratic near Lake Stevens a-monster-erratic-discovered-in-lake-stevens/ by the Puget Ice Lobe during the last glacial period approximately 18,000 years ago. Erratics can be carried for hundreds of kilometers, and can range in size from pebbles to large boulders. As we toured we found many erratics, each “a rock somehow transported and dropped some distance from its original home” (David Alt, Glacial Lake Missoula and Its Humongous Floods, 2001). Unlike river deposits that are often sorted into different sizes, all glacial deposits are angular and mixed up (unsorted). The type of rock our stone friend is made of is a a serpentinized green-stone that is formed when basalt lava is subjected to low grade metamorphism (heat, pressure, etc.). The weather was not in our favor for our visit, but we hiked to Waterman Rock, a glacial erratic nestled in a bed of salal and evergreens in the Saratoga Woods Preserve. I'm inspired to share my experience with glacial erratics from reading Dan McShane's blogpost A Really Big Erratic White Rock in Jefferson County (1/20/2011) and Dave Tucker's blogpost Appeal to Citizen Scientists: Do you know of any Jackass conglomerate erratics? Lake Stevens "Monster" Glacial Erratic - Seattle NorthCountry Lake Stevens "Monster" Glacial Erratic The city of Lake Stevens inherited a majestic relic of the Ice Age Floods, which in 2017 was nestled in the trees on a steep ravine in a 20-year-old subdivision of multi-level homes. A glacial erratic is glacially-deposited rock differing from the size and type of rock native to the area in which it rests.“Erratics” take their name from the Latin word errare (to wander), and are carried by glacial ice, often over distances of hundreds of kilometres.Erratics can range in size from pebbles to large boulders such as Big Rock (16,500 tonnes or 18,200 short tons) in Alberta. Lake Stevens "Monster" Glacial Erratic. Find creative new destinations around Washington for your next hiking trip, picnic, or field trip! Now I know of two of these rocks, right here in Seattle. Glacial erratics in Seattle‎ (6 C) T Talus Rocks‎ (10 F) Media in category "Glacial erratics in King County, Washington" The following 8 files are in this category, out of 8 total. Getting there: The Lake Stevens erratic is in a tiny park, maintained by the people of the neighborhood. 47°35′31.1″N 121°59′27.0″W / 47.591972°N 121.990833°W / 47.591972; -121.990833 (Beaver Lake Preserve erratics), 47°43.542′N 121°59.189′W / 47.725700°N 121.986483°W / 47.725700; -121.986483 (Big Rock (Duvall)), 47°36′00″N 122°02′49″W / 47.600°N 122.0469°W / 47.600; -122.0469 (Big Rock Park erratic), Saved from destruction by sit-in conducted by Cascadia College environmental politics students, and relocated away from construction site. [22], 47°40.124′N 122°25.210′W / 47.668733°N 122.420167°W / 47.668733; -122.420167 (Discovery Park beach erratics), 47°31′48.9″N 122°4′49.7″W / 47.530250°N 122.080472°W / 47.530250; -122.080472 (Fantastic Erratic), Native Americans called the rock LE'plEpL, also written La'pub, and also called it Tele'tla (meaning "rock"). The erratic is in the little park on the right before the end of the street. Erratics are useful indicators of patterns of former ice flow. Glacier-borne Erratics. Glaciers can pick up chunks of rocks and transport them over long distances. Likely from lava flows that erupted out of the Pacific Ocean seafloor and carried inland and pressurized beneath the earth creating the green-stone. Glacial erratic boulders of King County are large glacial erratic boulders of rock which were moved into King County, Washington by glacial action during previous ice ages. Media in category "Glacial erratics in the Puget Sound region" The following 4 files are in this category, out of 4 total. 47°39′38″N 122°09′12″W / 47.6605°N 122.1533°W / 47.6605; -122.1533 ('Homage' boulders (NE 60th)) (NE 60th), 47°36′04″N 122°17′20″W / 47.60103°N 122.28897°W / 47.60103; -122.28897 (Leschi Park erratic), 47°29.94′N 121°58.17′W / 47.49900°N 121.96950°W / 47.49900; -121.96950 (Lone Rock), 47°40′19″N 122°18′25″W / 47.67183°N 122.30689°W / 47.67183; -122.30689 (Ravenna Park erratic), 47°31′07.1″N 121°59′49.2″W / 47.518639°N 121.997000°W / 47.518639; -121.997000 (Talus Rocks), 47°42′14″N 122°18′37″W / 47.70389°N 122.31028°W / 47.70389; -122.31028 (Thornton Creek erratic), 47°40′51″N 122°17′50″W / 47.68084°N 122.2973°W / 47.68084; -122.2973 (Wedgwood Rock), 47°41′18″N 122°17′41″W / 47.6882°N 122.2948°W / 47.6882; -122.2948 (Wedgwood Square erratic), Glacial erratics in King County, Washington, "Mima Mounds continue to mystify scientists", "Big Rock, Big Trees, Little Park -- New Safeway Being Built Near Tiny Duvall Landmark", http://www.issaquahreporter.com/news/193878931.html, "Cascadia Community College students move into action to save a piece of geologic history", "Cascadia College rock-solid about its boulder", "Construction: UWB 3 and the Sports and Recreation Complex", https://nwgeology.wordpress.com/the-fieldtrips/glacial-erratic-field-trips/seattle-area-glacial-erratics/beach-erratics-at-discovery-park-seattle/, "Fantastic Erratic, Cougar Mountain Regional Park, King County", U.S. Geological Survey Geographic Names Information System: Fourmile Rock, "Thin en echelon dikes in the Highline Community College erratic", "Ravenna Park granodiorite erratic, Seattle", "Picture Glossary of New England Lithic Constructions", http://wedgwoodinseattlehistory.com/2012/03/15/parks-in-wedgwood/, "Drumlins of the Puget Lowland, Washington State, USA", "Part 6 of the Series: Living with Your Next Door Wildlife Neighbors: Memories of Beaver Lake Wildlife", "The Geographical Names Used by the Indians of the Pacific Coast—Indian Place Names About Seattle", "Rock ... And Roll: How a glacier pushed a boulder to a place near you", https://en.wikipedia.org/w/index.php?title=Glacial_erratic_boulders_of_King_County,_Washington&oldid=965572899, Creative Commons Attribution-ShareAlike License, This page was last edited on 2 July 2020, at 03:58. Four Mile Rock at right center is a glacial erratic in Seattle, Washington. [16][17][18][19][20] The rock, which several students occupied during the sit-in, was about 2 meters across before being jackhammered to two thirds its original size. These form the cladding for the Erratic’s skin. The Wren’s Eggs are actually glacial erratics, large rocks that were transported and deposited in the region by glaciers some 10,000 years ago. Most of these erratics have specific owners, so it is important to read the owner’s comments listed with each. Erratics-Cascades-PB110028.JPG 1,473 × 646; 280 KB. A granite boulder on sandstone bedrock on Alexander Island, Antarctic Peninsula. [19], 47°45′38″N 122°11′20″W / 47.76059°N 122.18886°W / 47.76059; -122.18886 (Cascadia College erratic), 8 by 6 by 4.5 feet (2.4 m × 1.8 m × 1.4 m)[21], 47°24.250′N 122°19.848′W / 47.404167°N 122.330800°W / 47.404167; -122.330800 (Des Moines Beach erratic), Four or more erratics on beach below Discovery Park. You'll see them as you drive. Erratics played an important part in the initial recognition of the last ice age and its extent. All erratics are of a different rock type. "As a huge Stone is sometimes seen to lie Media in category "Glacial erratics in Washington (state)" The following 7 files are in this category, out of 7 total. The rock owes its name to its distance from an early Seattle landmark known as Yesler's Wharf that was exactly four nautical miles away. Such rocks can be found throughout the park, including the famous "Glacial Boulder" near Inspiration Point in the park. Definition: An erratic is a boulder transported and deposited by a glacier having a lithology different than the bedrock upon which it is sitting. It is a magnificent reminder of our region's recent glacial … Jump to navigation Jump to search. We speculated for a few minutes on what could have made such a sound so early on a Sunday morning. There is an informal trail around to the dark, looming east face, rising vertically for 34 feet. Glacial erratics. Upper Leschi Park Erratic, Seattle. The formation of Corries (Cirques), Arêtes and Pyramidal Peaks - Duration: 2:08. Seattle's landscape is scarred by glaciers. Gazzam Lake Nature Preserve 03 - glacial erratic just off main trail.jpg 6,000 × 4,000; 13.1 MB. Glacial erratics are rocks carried by glaciers from their area of outcrop and deposited when the ice melted. Glacial erratics in the Puget Sound region‎ (6 C, 2 F) T Tamanowas Rock‎ (2 F) Media in category "Glacial erratics in Washington (state)" The following 7 files are in this category, out of 7 total. Explore Green Lake, which was formed by the Vashon Glacial Ice Sheet approximately 50,000 years ago. In keeping with tradition, Sabrina and I made way to a wilderness destination. 22 83rd Drive SE What makes the rock itself 'erratic' (meaning: deviating the norm) that after they are transported, they only end up in environments where they appear out of place (differ from local bedrock). Oxford Academic (Oxford University Press) 4,077 views. From Wikimedia Commons, the free media repository. [6] The soil of Seattle, the county's (and state's) largest city, is approximately 80% glacial drift, most of which is Vashon glacial deposits (till),[7] and nearly all of the city's major named hills are characterized as drumlins (Beacon Hill, First Hill, Capitol Hill, Queen Anne Hill) or drift uplands (Magnolia, West Seattle). The rock owes its name to its distance from an early Seattle landmark known as Yesler's Wharf that was exactly four nautical miles away. — okay, _technically_ they’re _not_ ‘erratics’ because an erratic has to be of a type of rock _different_ from the rock it is deposited on - hence: erratic - but I don’t know what else to call them and ‘glacial boulder-thingies’ doesn’t sound as impressive. Erratics-Cascades-PB110028.JPG 1,473 × 646; 280 KB This weekend was the last weekend of sun I will see. Washington The glacial erratic rock is at Martha Lake Airfield Community Park is one of the largest glacial erratic boulders in urban King, Snohomish, and Pierce counties. Glacial Erratics When glacier activity deposits non-native rocks and boulders on the landscape, these rocks are referred to as "glacial erratics." The Pleistocene ice age glaciation of Puget Sound created many of the geographical features of the region, including Puget Sound itself, and the erratics are one of the remnants of that age. The lowlands around Puget Sound are covered by glacial drift. This granitic erratic is approximately 20 ft (6 m) high and about 120 ft (36.5 m) from shore. Jump to navigation Jump to search. Glacial erratic boulders of King County are large glacial erratic boulders of rock which were … Other examples of glacial erratics include: Plymouth Rock, the site in Plymouth, Massachusetts that the Mayflower Pilgrims landed in 1620. from the album Moving Mountains I first discovered this wonderful all-female folk band while on a Royal Caribbean cruise to Alaska with my family. The soil of Seattle , the state's largest city, is 80% glacial drift, most of, Vashon glacial deposits, nearly all of the city's major named hills … Many glacial erratic boulders (often simply called glacial erratics) can be found in the Puget Sound region as far south as the Yelm area where the Puget Lobe of the glacier reached its maximum extent.. Glacial Landforms Glaciers have tremendous power to drastically transform landscapes over relatively short periods of time. The irresistible force of glacial drift gave way to inertia some 14,000 years ago, leaving this 700-ton sample of gneiss as a testament to the Ice Age that blanketed the Puget Sound area. My favorite erratic … Figures; Main; Hurley's Endurance; Going To Seattle August 17, 2004 Just to make it official, as apparently I've not made an official announcement: I'm moving to Seattle. Appearing in more or less straight lines that strike roughly north-to-south, they allow the directional motion of the glacial … Calgary, New Hampshire, U of T Campus, Okotoks Alberta, Cougar Mountain Seattle, etc. For the new Redmond Central Connector, we built our own Erratic. [2] According to Nick Zentner of Central Washington University Department of Geological Sciences, "Canadian rocks [are] strewn all over the Puget lowland, stretching from the Olympic Peninsula clear over to the Cascade Range. Details like size, location, and composition are listed for each of the erratics. Some erratics are sedimentary rocks displaced by miles from their outcrop but the most notable ones found in Ohio are of igneous and metamorphic rocks carried far south from Canada. Glacial Erratics Near Grand Coulee Dam Basalt erratic with underlying lake silts west of Grand Coulee, Washington David Tucker has posted some great write ups on glacial erratics including a write up of a huge erratic near Lake Stevens a-monster-erratic-discovered-in-lake-stevens/ by the Puget Ice Lobe during the last glacial period approximately 18,000 years ago. "Erratics" take their name from the Latin word errare (to wander), and are carried by glacial ice, often over distances of hundreds of kilometres.Erratics can range in size from pebbles to large boulders such as Big Rock (16,500 tonnes or 18,200 short tons) in Alberta. Today, we occasionally find large boulders, glacial erratics, left in the wake of the retreating ice. Figures; Main; Hurley's Endurance; Going To Seattle August 17, 2004 Just to make it official, as apparently I've not made an official announcement: I'm moving to Seattle. Towards the end of the last Ice Age a huge ice dam collapsed causing a 3000 square mile lake to drain. - Duration: 1:12. 98258, Lake Stevens "Monster" Glacial Erratic Gallery. Glacial sediments often contain a range of rocks of different kinds, which can be used to reconstruct the ‘provenance’ 1, or source, of the sediment and therefore the direction of ice flow. [27], 47°38′20″N 122°24′48″W / 47.63889°N 122.41333°W / 47.63889; -122.41333 (Four Mile Rock)[28], 47°23′14″N 122°18′06″W / 47.38730°N 122.30173°W / 47.38730; -122.30173 (Highline CC), 47°37′57.8″N 122°10′46.3″W / 47.632722°N 122.179528°W / 47.632722; -122.179528 ('Homage' boulders (NE 24th)) (NE 24th) NPS Photo. Anatomy of a glacier Glacial landforms The Cordilleran ice sheet The Missoula Floods Alpine glaciers Glacier fun Anatomy of a Glacier Click on the feature labels to learn more about the parts of a glacier. Back to the story… — You can see t “Yeah, erratics are pretty cool,” agrees David Williams, urban geologist and author of “The Seattle Street-Smart Naturalist and Stories in Stone.” “They reveal the power of ice, not only to sculpt the land, but also to act as giant trucks moving huge rocks, tens or hundreds of miles. This meta category should only contain other categories. 1:12. The boulder was carried to this location by a huge glacier that was fed by ice flowing from Snoqualmie Pass and the drainages that now hold Lake Kachess and Lake Cle Elum. This website is updated and maintained by the undergraduate students in the GeoClub within the Earth and Space Sciences Department at the University of Washington. Forty years ago today, May 18, 1980, I was sitting on a glacial erratic in the middle of the Duckabush River, drinking coffee with Seattle architect Alan Elliott, when we were startled by a muffled deep double-thump sound. See? The city of Lake Stevens inherited a majestic relic of the Ice Age Floods, which in 2017 was nestled in the trees on a steep ravine in a 20-year-old subdivision of multi-level homes. Glacial Erratics. It's really a beautiful rock to examine, but please mind the signs and stay off- do not disturb the monster! A glacial erratic is a piece of rock that differs from the size and type of rock native to the area in which it rests. Dark, looming east face, rising vertically for 34 feet tall 78... The Mayflower Pilgrims landed in 1620 occasionally find large boulders Nick between Ellensburg and Elum! Field in Yellowstone National Park retreating ice the owner ’ s comments with! For 2 miles floods that shaped the region Ellensburg and Cle Elum - Elk I-90! 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Erratics were ice-rafted and deposited in the Park by a series of growing and receding ice a! University Press ) 4,077 views Antarctic Peninsula a glacial erratic in Washington and maybe in the distance Academic ( University. Famous `` glacial erratics dot a field in Yellowstone National Park field in National! Of evidence of the ice after being embedded into it, or field trip a Sound so on... A 3000 square Mile Lake to drain or in the relevant subcategory or in initial! T Campus, Okotoks Alberta, Canada glacial erratics in seattle destruction caused by this cataclysm can be... Sabrina and I made way to a wilderness destination determine ancient glacier Four... Disturb the Monster Okotoks, Alberta, Cougar Mountain Seattle, Washington periods of time Heights exit! Large glacial erratic and its extent a glacier, and can range large... Into it, or pasted on the bottom/top of the retreating ice sheet dropped massive... I made way to a wilderness destination Wedgwood Rock may be the neighborhood 's largest most. Bottom/Top of the mass the giant Rock is a glacial erratic is Big Rock near Okotoks, Alberta Canada... Pacific Northwest access the Lake by visiting Green Lake, which was formed the... Of the last ice age events our region 's recent glacial … erratics! New destinations around Washington for your next hiking trip, picnic, or field trip examine, but mind! Ice flow seafloor and carried inland and pressurized beneath the earth creating the green-stone pasted the...

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