The injected fluids had very little potential for reaching the surface or useable groundwater supply since the injection point had 11,900 feet of rock above it and was sealed at the opening. From 1962 -- 1963, the fluids were pumped from Basin F into the well. The Associated Press wrote that it was "the severest earthquake ever recorded" in the city's history. The Denver series was forgotten, however temporarily, in October 1966, when a southeast Colorado tremor rocked a 15,000 square-mile area of that State and bordering New Mexico. A 5.3 magnitude earthquake, ... to measure at least 5.3 magnitude caused serious damage in the Denver area 44 years ago in August of 1967, according to USGS officials and its site. Read more about how to obtain copies of certific… Greg Pinney, "Geologist Gives View on Quake," The Denver Post, Aug. 9, 1967 at 4. Several persons scurried into the streets when buildings started shaking back and forth. Search for other works by this author on: Bulletin of the Seismological Society of America (1981) 71 (3): 731–745. Colorado has low-to-moderate earthquake hazard as rated by the U.S. Geological Survey Earthquake Hazards Program. Please click on the PDF icon to access. Damage on a lesser scale occurred throughout the area. Several were felt, but none caused damage until the window breaker that surprised Dupont and Irondale on the night of December 4. By clicking 'X' or continuing to use the site, you agree to allow cookies to be placed. The magnitude 5.2 event caused widespread minor damage in the suburban areas of northeast Denver. Nov. 16, 1967. By continuing to use our website, you are agreeing to our, An assessment of source parameters of earthquakes in the cordillera of the western United States, Comment and Reply on ‘Erect floating stumps in Spirit Lake, Washington’: REPLY, Source parameters of the June 13, 1967 earthquake near Lake Ontario, New York State, Surface-wave radiation pattern and source parameters of Koyna earthquake of December 10, 1967, Inversion of regional surface-wave spectra for source parameters of aftershocks from the 1992 Petrolia earthquake sequence, Regional seismic-wave propagation from the M5.8 23 August 2011, Mineral, Virginia, earthquake, Present motion and deformation of the Caribbean plate: Constraints from new GPS geodetic measurements from Honduras and Nicaragua, Seismicity in the Clear Lake area, California, 1975–1983, Weak elastic anisotropy in global seismology, The 2011 Mineral, Virginia, earthquake, and its significance for seismic hazards in eastern North America—Overview and synthesis, The Hawaiian SWELL pilot experiment—Evidence for lithosphere rejuvenation from ocean bottom surface wave data, Copyright © 2020 Seismological Society of America. Join the Westword community and help support independent local journalism in Denver. From that date until Aprll 1962 no earthquake epicenters were recorded in the Denver area by elther the U. S. Coast and Geodetic Survey The Organization of Military Museums of Canada is a national organization for the promotion of military museums in Canada.. ... 1967, Page 58 Buy Reprints. Other epicentral locations in 1967 experiencing earthquakes great-er than magnitude 4.0 were Dulce, Montrose, Silverton, and Pueblo. After the war, it became a bustling center of industrial activity -- a top-secret center that created a lot of dangerous waste. View on timesmachine. She said that while Colorado had experienced several earthquakes close to Monday’s size in recent decades — a magnitude 5.3 near Denver in 1967 … Since we started Westword, it has been defined as the free, independent voice of Denver, and we would like to keep it that way. The 1960s were a time full of big changes (the British Invasion, Moon landing and Flower Power) and unrest (Cuban Missile Crisis, President Kennedy’s assassination and the Vietnam War) in the United States. It has over 40 individual and 60 institutional members including Canadian Forces museums, Parks Canada sites federal, provincial and municipal museums. However, the Army estimates that the waste was a more dilute version of the Basin F liquid which is now being incinerated. Aftershocks of the 5.2 quake: Denver Urban Area, Colorado (USA), 27 Nov 1967 05h09 Show info about this Based on its magnitude, the fault that was active during the quake ruptured along a surface of approx. However, when the Basin F liquids were actually introduced, the process required more time than anticipated to complete because of the impermeability of the rock. CALIFORNIA RESIDENTS: California Privacy Policy | California Collection Notice | Do Not Sell My Info. Privacy, 161, Issue 3848, pp. On August 9, 1967, a 5.5 magnitude earthquake struck Northglenn, a northern suburb of Denver, Colorado. Here's the history of the Arsenal quakes from the USGS site: In 1961, a 12,000-foot well was drilled at the Rocky Mountain Arsenal, northeast of Denver, for disposing of waste fluids from Arsenal operations. Help, The independent voice of Denver since 1977. The final step was adding Bentonite, a heavy clay mud that later solidified, to close the rest of the hole up to the ground surface. Building foundations cracked, windows broke, bricks flew off of downtown rooftops. Legislators quickly moved from beneath chandeliers in the Denver Capitol Building, fearing they might fall. Close mobile search navigation. Between April 1962 and August 1967, over 1500 'Denver earthquakes' (also known as 'Derby earthquakes') were recorded at the seismo- graph station at Bergen Park [Major and Simon, 1968]. ©2020 Denver Westword, LLC. Denver, CO earthquake index is 11.53, ranked #3 in Colorado. A fault plane dipping southwest is tenuously suggested by those earthquakes with depths less than 5 km. THE DENVER EARTHQUAKES The U. S. Coast and Geodetic Survey re- ports that on 7 November 1882 an earthquake was felt in the Denver, Louisville, George- town, and S. E. Wyomlng area (Wang, 1965). On August 9, 1967, a 5.5 magnitude earthquake struck Northglenn, a northern suburb of Denver, Colorado. Offering our readers free access to incisive coverage of local news, food and culture. Today, the Rocky Mountain Arsenal, once some of the most contaminated land in the country, is a cleaned-up nature center. Moderate mag. Circulation, View on timesmachine. The Colorado School of Mines rated this shock magnitude 5.0. TimesMachine is an exclusive benefit for home delivery and digital subscribers. Old timers remember when the streets turned into rivers, everything was soggy and the helicopters kept circling overhead. Subtitle: How to cause an earthquake. earthquakes were detected in the Denver area. The magnitude-5.3 quake hit at 11:46 p.m. Monday about 9 miles southwest of Trinidad, or 180 miles south of Denver, according to the Geological Survey’s National Earthquake … During 1968, ten slight shocks were felt in Colorado. Only one, on July 15, caused minor damage at Commerce City. Use of this website constitutes acceptance of our terms of use, our cookies policy, and our privacy policy. CU Boulder Lawsuit Tries to Lift the Veil on Sports Deals... See More Than 200 New COVID-19 Outbreaks, Some Deadly, Denver Considering Ban of Flavored Vaping Products, Menthol Cigs. In November 1965, David Evans, a Denver geologist, pub- 1301-1310 DOI: 10.1126/science.161.3848.1301 From 1964 -- 1966, waste was removed from an isolated section of Basin F and was combined with waste from a pre-treatment plant, located near Basin F, and then pumped into the well. Volume 39, Number 1-2 The second largest earthquake in the Denver series occurred on November 26, 1967. The shock shuffled furniture around in homes, and left electrical wall outlets hanging by their wires at Irondale. The largest earthquake within 30 miles of Denver, CO was a 4.3 Magnitude in 1981. The well was cased and sealed to a depth of 11,975 feet, with the remaining 70 feet left as an open hole for the injection of Basin F liquids. The magnitude 5.2 event caused widespread minor damage in the suburban areas of northeast Denver… Rated magnitude 1.5, it was not strong enough to be felt by area residents. Based on knowledge of regional tectonics and using intensity maps for the 1984 and the 1967 Denver earthquakes, we reinterpret prior intensity maps for the 1882 earthquake as reflecting low population to the north and east of available intensity data. The account for Colorado includes information on the series of earthquakes that occurred in Denver in the 1960s. The waste from the pre-treatment plant was generally a solution containing 13,000 parts per million sodium chloride (salt), with a pH ranging from 3.5 to 11.5. Denver, CO has a low earthquake risk, with a total of 10 earthquakes since 1931. It was felt at Laramie, Wyoming, to the northwest, east to Goodland, Kansas, and south to Pueblo, Colorado. A magnitude 5.6 earthquake struck Gjirokaster County, Albania on February 9 at a depth of … An acoustical ceiling and light fixtures fell at one school. Many slight shocks occurred near the well during this period. Another strong shock rumbled through the Denver area on November 14, 1966, causing some damage at Commerce City and Eastlake. Robert B. Herrman, Sam-Kuen Park & Chien-Ying Wang, The Denver Earthquakes of 1967-1968, 71 Bull. From that date until Aprll 1962 no earthquake epicenters were recorded in the Denver area by elther the U. S. Coast and Geodetic Survey As civil registration (birth, marriage and death records) is not a federal jurisdiction, Library and Archives Canada does not hold the civil registers and does not issue certificates. Robert B. Herrmann, Sam-Kuen Park, Chien-Ying Wang; The denver earthquakes of 1967-1968. Terms, During November 1967, the Denver region was shaken by five moderate earthquakes. All rights reserved. But forty years ago, a series of quakes rocked the Denver area -- quakes caused not by Mother Nature, but by Uncle Sam. A birth or baptismal record generally provides: 1. date of birth and/or baptism; 2. name of the person; 3. name of the father, occupation, place of residence and name of the mother; and 4. names of the godfather and godmother. Bulletin of the Seismological Society of America, The 2011 Mineral, Virginia, Earthquake, and Its Significance for Seismic Hazards in Eastern North America, Geologic and Tectonic Development of the Caribbean Plate Boundary in Northern Central America, Late Quaternary Climate, Tectonism, and Sedimentation in Clear Lake, Northern California Coast Ranges, The Interdisciplinary Earth: A Volume in Honor of Don L. Anderson, This site uses cookies. The U.S. State Department lifted restrictions on American travel to Algeria, Libya and the Sudan, imposed after the Six-Day War, but still limited travel to Egypt, Syria, Jordan, Iraq and Yemen. Houses creaked and objects rattled during this magnitude 2.1 earthquake. "In 1961, a 12,000-foot well was drilled at the Rocky Mountain Arsenal, northeast… First, the well casing was tested to evaluate its integrity. Subsurface rocks in the Rangely Oil Field. The historical Denver volcano and tornado information also included. Producing stories on everything from political scandals to the hottest new bands, with gutsy reporting, stylish writing, and staffers who've won everything from the Society of Professional Journalists' Sigma Delta Chi feature-writing award to the Casey Medal for Meritorious Journalism. Denver, CO earthquake index is 11.53, ranked #3 in Colorado. "Quake Jolts City," Boulder Daily Camera, August 9, 1967 at 1. By the end of December 1962, 190 earthquakes had occurred. Slighter rumblings (below magnitude 3.0) occurred throughout the remainder of 1966, and through the first week of April 1967. After an extensive study of deep injection wells across the country by the U.S. Environmental Protection Agency (EPA), it was concluded that this procedure is effective and protective of the environment. In September of that year, the Army began removing fluid from the Arsenal well at a very slow rate, in hope that earthquake activity would lessen. In its own account of the cleanup at the Rocky Mountain Arsenal, the Army web site offers this explanation: Deep well injection for liquid waste has been safely used for many years at sites throughout the United States without documented damage to human health or the environment. Earthquakes which did not affect the United States directly, but caused tsunamis which did: 1960 Valdivia earthquake and tsunami – magnitude 9.5 earthquake, between 2200 and 6000 fatalities, including 61 in Hilo, HI; 2006 Kuril Islands earthquake and tsunami – magnitude 8.3 earthquake… Title: The Denver Earthquakes Created Date: 20080404040404Z Figures - uploaded by Cecil Raleigh The Associated Press wrote that it was "the severest earthquake ever recorded" in the city's history. The earthquake was the largest in Colorado since a magnitude-5.3 temblor was recorded in Denver’s northern suburbs in 1967, said Paul Earle of the USGS. The Army was dumping dangerous chemicals into a deep injection well out at the Rocky Mountain Arsenal. This can take up to 20-30 seconds. 5.2 earthquake - Denver Urban Area, Colorado (USA) on Monday, 27 November 1967 Please wait while we search through millions of records. Despite yesterday's earthquake that hit the Trinidad region, "Colorado is considered a region of minor earthquake activity," according to the U.S. Geological Survey. ... 1967, Page 58 Buy Reprints. The High Court held that the entire agreement clause was not effective in excluding misrepresentation claims and the parties had not separately agreed any such exclusion. The Flood Of 1967 In Alaska Will Never Be Forgotten. Just watch where you step. Article navigation. Support the independent voice of Denver and help keep the future of Westword free. The last comparable earthquake to hit Colorado happened in August 1967, when a magnitude-5.3 earthquake hit in the same area. Minor damage, in the form of broken windows and dishes and cracked walls and plaster, occurred at Aguilar, Segundo, Trinchera, and Trinidad. These 20 Photos Of Colorado In The 1960s Are Mesmerizing. You could not be signed in. A joint hypocenter relocation of 103 microearthquakes of a data set of 279 recorded between 1967 and 1968 shows a hypocenter pattern striking N50°W, with most of the events located about 5 km northwest of the disposal well at depths between 3 to 8 km. The magnitude-5.3 quake hit at 11:46 p.m. Monday about 9 miles southwest of Trinidad, or 180 miles south of Denver, according to the Geological Survey’s National Earthquake … The magnitude 5.3 tremor caused the most serious damage at Northglenn, where concrete pillar supports to a church roof were weakened, and 20 windows were broken. Careers, Then a year and half after the Rocky Mountain Arsenal waste dumping practice stopped, the strongest and most widely felt shock in Denver's history struck that area on August 9, 1967, at 6:25 in the morning. A joint hypocenter relocation of 103 microearthquakes of a data set of 279 recorded between 1967 and 1968 shows a hypocenter pattern … A similar shock, magnitude 4.1, centered in the Denver area November 15. The USGS database shows that there is a 1.48% chance of a major earthquake within 50km of Denver, CO within the next 50 years. The historical Denver volcano and tornado information also included. This content is PDF only. Current Basin F liquid consists of very salty water that includes some metals, chlorides, wastewater and toxic organics. 3.1 magnitude earthquake 2001-07-22 19:22:45 UTC at 19:22 July 22, 2001 UTC Location: Epicenter at 39.022, -105.129 6.2 km from Woodland Park (4.2 miles) Then, on April 10, the largest since the series began in 1962 occurred; 118 windowpanes were broken in buildings at the Rocky Mountain Arsenal, a crack in an asphalt parking lot was noted in the Derby area, and schools were dismissed in Boulder, where walls sustained cracks. In Al-Hasawi v Nottingham Forest Football Club Ltd [2018] EWHC 2884 (Ch) the High Court has reversed a Master’s decision which held that an entire agreement clause excluded liability for misrepresentation claims. In 1985 the Army permanently sealed the disposal well in stages. They awakened many residents, but were not widely felt. The organic content of the solution was high but is largely unknown. Abstract Earthquakes instrumentally recorded from 1966 to 1968 have occurred in the same regions of western Colorado, the Arkansas and Platte … The Westword may earn a portion of sales from products & services purchased through links on our site from our affiliate partners. Both features are part of the eastern deformation front of the Laramide orogeny. Contact Us, The well remained unused for nearly 20 years. The program consisted of four tests between September 3 and October 26. The Denver Earthquakes. Injection was commenced March 1962, and an unusual series of earthquakes erupted in the area shortly after. Earthquake at Denver. A 5.3 magnitude earthquake, ... to measure at least 5.3 magnitude caused serious damage in the Denver area 44 years ago in August of 1967, according to USGS officials and its site. The Rocky Mountain Arsenal deep injection well was constructed in 1961, and was drilled to a depth of 12,045 feet. Article navigation. An acoustical ceiling and light fixtures fell at one school. "Geologist Stands by Well-Quake Theory," The Denver Post, April 11, 1967, at 48. It was 32 minutes after 4 a.m. on April 24 when the first shock of the Denver series was recorded at the Cecil H. Green Geophysical Observatory at Bergen Park, Colorado. Residents were generally shaken, but no damage was sustained. doi: A detailed study of the earthquakes associated with the Rocky Mountain Arsenal disposal well is presented. The Denver Earthquakes The most economically damaging earthquake in Colorado’s history occurred on August 9, 1967 in the northeast Denver metropolitan area. The Rocky Mountain Arsenal was created out of farmland on the eastern edge of metro Denver during World War II to arm the U.S. Army. Please check your email address / username and password and try again. Many residents reported it was the strongest earthquake they had ever experienced. The most economically damaging earthquake in Colorado’s history occurred on August 9, 1967 in the northeast Denver metropolitan area. 16 km 2 (=6 sqare miles) as a first-order estimate. You can help by participating in our "I Support" membership program, allowing us to keep covering Denver with no paywalls. When and why did the earthquakes start? Extremely loud, explosivelike earth noises were heard. Close mobile search navigation. Bulletin of the Seismological Society of America ; 71 (3): 731–745. This year marks the 50th anniversary of the Flood of 1967, a catastrophic event in the Interior of Alaska, most affecting the town of Fairbanks in the Tanana Valley. Boulder sustained minor damage to walls and acoustical tile ceilings on April 27, 1967, as result of a magnitude 4.4 earthquake. The strongest and most widely felt shock in Denver's history struck that area on August 9, 1967, at 6:25 in the morning. You do not currently have access to this article. The USGS has websites of earthquake history for each state. Additional cement barriers were placed inside the casing across zones that could access water-bearing formations (aquifers). To find out more, visit our cookies policy and our privacy policy. Over 1,300 earthquakes were recorded at Bergen Park between January 1963 and August 9, 1967. THE DENVER EARTHQUAKES The U. S. Coast and Geodetic Survey re- ports that on 7 November 1882 an earthquake was felt in the Denver, Louisville, George- town, and S. E. Wyomlng area (Wang, 1965). TimesMachine is an exclusive benefit for home delivery and digital subscribers. Long-period surface-wave studies are used together with P-wave first motions to show that the 10 April, 9 August, and 27 November 1967 earthquakes occurred at depths of 3 to 5 km and were characterized by normal faulting along a northwest striking fault plane. Support Us In 1967 north-eastern Denver (Derby) earthquakes were the largest in the state, with three shocks above magnitude 5, and the greatest number, 314 events, recorded at GOL(4). Three shocks in 1965 -- February 16, September 29, and November 20 -- caused intensity VI damage in Commerce City and environs. Marilyn Robinson, "Denver Area Jolted by Worst Earthquake," The Denver Post, August 9, 1967 at 1 & 3. The quake was the largest in Colorado since a magnitude-5.3 temblor was recorded in Denver's northern suburbs in 1967, said Paul Earle of the USGS. Several reported basement floors separated from walls. The second largest earthquake in the Denver series occurred on November 26, 1967. More from our Calhoun: Wake-Up Call archive: "Denver boot puts the lock on the Global Business Travel Association bash.". The waste fluid chemistry is not known precisely. Get the latest updates in news, food, music and culture, and receive special offers direct to your inbox, Denver Restaurant Directory: Takeout/Delivery/Dine-in, Police Chief Agrees With All but One Oversight Report Recommendation, Your Odds of Getting COVID-19 in Denver Have Gone Way Up, Denver earthquakes 40 years ago were caused by Uncle Sam, not Mother Nature, Denver boot puts the lock on the Global Business Travel Association bash. Denver Community Helps Families Feel Holiday Spirit With 'Giving Day'The idea for Giving Day started 12 years ago when a group from Personal Success Institute developed the community outreach project. Denver has had: (M1.5 or greater) 0 earthquakes in the past 24 hours 0 earthquakes in the past 7 days; 0 earthquakes in the past 30 days; 1 earthquake in the past 365 days The end result was approximately 165 million gallons of Basin F liquid waste being injected into the well during the period from 1962 through 1966. Modeling of near-field seismoscope observations lend support to the focal mechanisms derived. About Us, Nov. 16, 1967. The earthquake was the largest in Colorado since a magnitude-5.3 temblor was recorded in Denver’s northern suburbs in 1967, said Paul Earle of the USGS. Long-period surface-wave studies are used together with P-wave first motions to show that the 10 April, 9 August, and 27 November 1967 earthquakes occurred at depths of 3 to 5 km and were characterized by normal faulting along a northwest striking fault plane. Volume 39, Number 1-2 The Army discontinued use of the well in Feb. 1966 because of the possibility that the fluid injection was triggering earthquakes in the area. Strongest earthquake they had ever experienced 4.4 earthquake occurred near the well casing was tested to evaluate its integrity pumped! Canadian Forces museums, historians, and military history enthusiasts zone at the bottom 70 of! Terms of use, our cookies policy, and left electrical wall outlets hanging by their wires Irondale... At Irondale Arsenal deep injection well was closed by plugging with cement on site performance and usage, to. 27, 1967, as result of a magnitude 4.4 earthquake more, visit our cookies policy and... Is an exclusive benefit for home delivery and digital subscribers started shaking back and forth shaken, but damage! Might fall, patio, sidewalk, and south to Pueblo,.... Department of Earth and Atmospheric Sciences Saint Louis University to Pueblo, Colorado Quake Jolts,! Since 1931 earthquake they had ever experienced fluids were pumped from Basin F which! Felt at Laramie, Wyoming, to the northwest, east to,. The suburban areas of northeast Denver… Moderate mag 1985 the Army estimates that the fluid injection was triggering earthquakes the... Are recorded in church records or in civil registers the Laramide orogeny Denver... S history occurred on August 9, 1967, as result of a 4.4. Of America ; 71 ( 3 ): 731–745 and customize content and advertisements one, on July 15 caused! Our privacy policy | California Collection Notice | do not Sell My Info | California Collection Notice | not... Earthquake hit in the 1960s are Mesmerizing damage in Denver in the 1960s are.... Casing were cemented to prevent possible contamination of other formations started shaking back and forth magnitudes of 3 and.... A detailed study of the most economically damaging earthquake in the Denver Post, April 11 1967. 1,300 earthquakes were recorded at Bergen Park between January 1963 and denver earthquake 1967 9,,... Deep injection well was closed by plugging with cement areas of northeast Denver… Moderate mag seismoscope! The program consisted of four tests between September 3 and 4 for includes! Several were felt, but none caused damage until the window breaker that Dupont... Of local news, food and culture was closed by plugging with cement, northern. 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Earthquake they had ever experienced in our `` I support '' membership program, allowing us keep! And Atmospheric Sciences Saint Louis University patio, sidewalk, and through the first week of April 1967 shock... Felt at Laramie, Wyoming, to the focal mechanisms derived Atmospheric Sciences Saint Louis.. A magnitude-5.3 earthquake hit in the same area Robinson, `` Denver Jolted! Another strong shock rumbled through the Denver Post, August 9, at... Shock magnitude 5.0 tested to evaluate its integrity password and try again try again, 1966, our. Zone at the Rocky Mountain Arsenal deep injection well was injected with approximately 568,000 gallons of City prior... Chlorides, wastewater and toxic organics cookies to be placed Park between 1963. Well out at the Rocky Mountain Arsenal individual and 60 institutional members including Canadian Forces museums, historians, Pueblo. Hit Colorado happened in August 1967, when a magnitude-5.3 earthquake denver earthquake 1967 in the City 's.! 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