16 km 2 (=6 sqare miles) as a first-order estimate. 161, Issue 3848, pp. 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. Moderate mag. The historical Denver volcano and tornado information also included. ©2020 Denver Westword, LLC. Figures - uploaded by Cecil Raleigh 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. The magnitude 5.2 event caused widespread minor damage in the suburban areas of northeast Denver… Earthquake Information for Denver, Colorado. 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) This magnitude 5.3 earthquake centered near Commerce City caused more than a million dollars damage in Denver and the northern suburbs. 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. "Geologist Stands by Well-Quake Theory," The Denver Post, April 11, 1967, at 48. 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. 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. Since we started Westword, it has been defined as the free, independent voice of Denver, and we would like to keep it that way. Please check your email address / username and password and try again. It has over 40 individual and 60 institutional members including Canadian Forces museums, Parks Canada sites federal, provincial and municipal museums. In November 1965, David Evans, a Denver geologist, pub- Minor damage, in the form of broken windows and dishes and cracked walls and plaster, occurred at Aguilar, Segundo, Trinchera, and Trinidad. Today, the Rocky Mountain Arsenal, once some of the most contaminated land in the country, is a cleaned-up nature center. Current Basin F liquid consists of very salty water that includes some metals, chlorides, wastewater and toxic organics. Nov. 16, 1967. The waste fluid chemistry is not known precisely. ... 1967, Page 58 Buy Reprints. Support the independent voice of Denver and help keep the future of Westword free. The Associated Press wrote that it was "the severest earthquake ever recorded" in the city's history. Just watch where you step. Next, the injection zone at the bottom 70 feet of the well was closed by plugging with cement. 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 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. A fault plane dipping southwest is tenuously suggested by those earthquakes with depths less than 5 km. Contact Us, The last comparable earthquake to hit Colorado happened in August 1967, when a magnitude-5.3 earthquake hit in the same area. This magnitude 5.3 earthquake centered near Commerce City caused more than a million dollars damage in Denver and the northern suburbs. 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. Building foundations cracked, windows broke, bricks flew off of downtown rooftops. Science 27 Sep 1968: Vol. The Army was dumping dangerous chemicals into a deep injection well out at the Rocky Mountain Arsenal. Other epicentral locations in 1967 experiencing earthquakes great-er than magnitude 4.0 were Dulce, Montrose, Silverton, and Pueblo. Article navigation. But with local journalism's existence under siege and advertising revenue setbacks having a larger impact, it is important now more than ever for us to rally support behind funding our local journalism. An acoustical ceiling and light fixtures fell at one school. Many residents reported it was the strongest earthquake they had ever experienced. DENVER - Earthquake awareness is the message from the Colorado Geological Survey on the 125th anniversary of Colorado's largest recorded earthquake that … Injection was commenced March 1962, and an unusual series of earthquakes erupted in the area shortly after. Careers, From that date until Aprll 1962 no earthquake epicenters were recorded in the Denver area by elther the U. S. Coast and Geodetic Survey doi: A detailed study of the earthquakes associated with the Rocky Mountain Arsenal disposal well is presented. 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. We use cookies to collect and analyze information on site performance and usage, and to enhance and customize content and advertisements. 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. Legislators quickly moved from beneath chandeliers in the Denver Capitol Building, fearing they might fall. The second largest earthquake in the Denver series occurred on November 26, 1967. Circulation, They awakened many residents, but were not widely felt. The Associated Press wrote that it was "the severest earthquake ever recorded" in the city's history. Denver, CO earthquake index is 11.53, ranked #3 in Colorado. TimesMachine is an exclusive benefit for home delivery and digital subscribers. Denver, CO earthquake index is 11.53, ranked #3 in Colorado. The strongest and most widely felt shock in Denver's history struck that area on August 9, 1967, at 6:25 in the morning. Some of the earthquakes exceeded Richter magnitudes of 3 and 4. For testing purposes, the well was injected with approximately 568,000 gallons of city water prior to injecting any waste. Robert B. Herrmann, Sam-Kuen Park, Chien-Ying Wang; The denver earthquakes of 1967-1968. Many homeowners reported wall, ceiling, floor, patio, sidewalk, and foundation cracks. Volume 39, Number 1-2 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. Disposal of waste fluids by injection into a deep well has triggered earthquakes near Denver, Colorado. In 1985 the Army permanently sealed the disposal well in stages. 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 similar shock, magnitude 4.1, centered in the Denver area November 15. The magnitude 5.2 event caused widespread minor damage in the suburban areas of northeast Denver. You can help by participating in our "I Support" membership program, allowing us to keep covering Denver with no paywalls. The Denver Earthquakes The most economically damaging earthquake in Colorado’s history occurred on August 9, 1967 in the northeast Denver metropolitan area. Earthquake at Denver. 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. 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. Support Us On August 9, 1967, a 5.5 magnitude earthquake struck Northglenn, a northern suburb of Denver, Colorado. 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… Boulder sustained minor damage to walls and acoustical tile ceilings on April 27, 1967, as result of a magnitude 4.4 earthquake. During November 1967, the Denver region was shaken by five moderate earthquakes. To find out more, visit our cookies policy and our privacy policy. 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. Several persons scurried into the streets when buildings started shaking back and forth. Several reported basement floors separated from walls. Extremely loud, explosivelike earth noises were heard. Read more about how to obtain copies of certific… Births are recorded in church records or in civil registers. Damage on a lesser scale occurred throughout the area. The account for Colorado includes information on the series of earthquakes that occurred in Denver in the 1960s. 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. First, the well casing was tested to evaluate its integrity. Many slight shocks occurred near the well during this period. "Quake Jolts City," Boulder Daily Camera, August 9, 1967 at 1. Department of Earth and Atmospheric Sciences Saint Louis University. The shock shuffled furniture around in homes, and left electrical wall outlets hanging by their wires at Irondale. CALIFORNIA RESIDENTS: California Privacy Policy | California Collection Notice | Do Not Sell My Info. The Colorado School of Mines rated this shock magnitude 5.0. Colorado has low-to-moderate earthquake hazard as rated by the U.S. Geological Survey Earthquake Hazards Program. 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. Staff, Bulletin of the Seismological Society of America ; 71 (3): 731–745. You do not currently have access to this article. 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. Earthquake at Denver. 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. 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. However, the Army estimates that the waste was a more dilute version of the Basin F liquid which is now being incinerated. About Us, Subtitle: How to cause an earthquake. Additional cement barriers were placed inside the casing across zones that could access water-bearing formations (aquifers). Both features are part of the eastern deformation front of the Laramide orogeny. Several were felt, but none caused damage until the window breaker that surprised Dupont and Irondale on the night of December 4. Old timers remember when the streets turned into rivers, everything was soggy and the helicopters kept circling overhead. 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. From that date until Aprll 1962 no earthquake epicenters were recorded in the Denver area by elther the U. S. Coast and Geodetic Survey From 1962 -- 1963, the fluids were pumped from Basin F into the well. 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. Marilyn Robinson, "Denver Area Jolted by Worst Earthquake," The Denver Post, August 9, 1967 at 1 & 3. Privacy, Use of this website constitutes acceptance of our terms of use, our cookies policy, and our privacy policy. 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. Article navigation. 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. Offering our readers free access to incisive coverage of local news, food and culture. View on timesmachine. 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. The Westword may earn a portion of sales from products & services purchased through links on our site from our affiliate partners. The Flood Of 1967 In Alaska Will Never Be Forgotten. Modeling of near-field seismoscope observations lend support to the focal mechanisms derived. 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). Greg Pinney, "Geologist Gives View on Quake," The Denver Post, Aug. 9, 1967 at 4. The organic content of the solution was high but is largely unknown. "In 1961, a 12,000-foot well was drilled at the Rocky Mountain Arsenal, northeast… 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. 1301-1310 DOI: 10.1126/science.161.3848.1301 The Rocky Mountain Arsenal deep injection well was constructed in 1961, and was drilled to a depth of 12,045 feet. 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. ... 1967, Page 58 Buy Reprints. Three shocks in 1965 -- February 16, September 29, and November 20 -- caused intensity VI damage in Commerce City and environs. An acoustical ceiling and light fixtures fell at one school. Title: The Denver Earthquakes Created Date: 20080404040404Z 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. You could not be signed in. Close mobile search navigation. The most economically damaging earthquake in Colorado’s history occurred on August 9, 1967 in the northeast Denver metropolitan area. 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. Any detected voids behind the casing were cemented to prevent possible contamination of other formations. Two early morning shocks occurred November 14. The USGS has websites of earthquake history for each state. The OMMC was established in 1967 by a group of military museums, historians, and military history enthusiasts. Help, The independent voice of Denver since 1977. Houses creaked and objects rattled during this magnitude 2.1 earthquake. 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). Building foundations cracked, windows broke, bricks flew off of downtown rooftops. 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. The Denver Earthquakes. Volume 39, Number 1-2 Only one, on July 15, caused minor damage at Commerce City. 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]. When and why did the earthquakes start? All rights reserved. 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. Terms, 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. More from our Calhoun: Wake-Up Call archive: "Denver boot puts the lock on the Global Business Travel Association bash.". Title: The Denver Earthquakes Created Date: 20080404040404Z 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. Abstract Earthquakes instrumentally recorded from 1966 to 1968 have occurred in the same regions of western Colorado, the Arkansas and Platte … Please click on the PDF icon to access. The Army discontinued use of the well in Feb. 1966 because of the possibility that the fluid injection was triggering earthquakes in the area. A local shock awakened a few persons in Commerce City November 25. 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 … earthquakes were detected in the Denver area. It was felt at Laramie, Wyoming, to the northwest, east to Goodland, Kansas, and south to Pueblo, Colorado. Another strong shock rumbled through the Denver area on November 14, 1966, causing some damage at Commerce City and Eastlake. The well remained unused for nearly 20 years. Over 1,300 earthquakes were recorded at Bergen Park between January 1963 and August 9, 1967. 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 … 5.2 earthquake - Denver Urban Area, Colorado (USA) on Monday, 27 November 1967 Please wait while we search through millions of records. Denver, CO has a low earthquake risk, with a total of 10 earthquakes since 1931. By the end of December 1962, 190 earthquakes had occurred. Close mobile search navigation. 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. 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 … 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. 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. August 1, 1967 (Tuesday). Join the Westword community and help support independent local journalism in Denver. By clicking 'X' or continuing to use the site, you agree to allow cookies to be placed. 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. 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). Subsurface rocks in the Rangely Oil Field. This content is PDF only. The largest earthquake within 30 miles of Denver, CO was a 4.3 Magnitude in 1981. 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. A joint hypocenter relocation of 103 microearthquakes of a data set of 279 recorded between 1967 and 1968 shows a hypocenter pattern … Residents were generally shaken, but no damage was sustained. Search for other works by this author on: Bulletin of the Seismological Society of America (1981) 71 (3): 731–745. The program consisted of four tests between September 3 and October 26. These 20 Photos Of Colorado In The 1960s Are Mesmerizing. 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. The historical Denver volcano and tornado information also included. On August 9, 1967, a 5.5 magnitude earthquake struck Northglenn, a northern suburb of Denver, Colorado. A magnitude 5.6 earthquake struck Gjirokaster County, Albania on February 9 at a depth of … 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. Rated magnitude 1.5, it was not strong enough to be felt by area residents. 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. 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. The second largest earthquake in the Denver series occurred on November 26, 1967. 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. 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. 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. But forty years ago, a series of quakes rocked the Denver area -- quakes caused not by Mother Nature, but by Uncle Sam. TimesMachine is an exclusive benefit for home delivery and digital subscribers. This can take up to 20-30 seconds. How? During 1968, ten slight shocks were felt in Colorado. The Organization of Military Museums of Canada is a national organization for the promotion of military museums in Canada.. Robert B. Herrman, Sam-Kuen Park & Chien-Ying Wang, The Denver Earthquakes of 1967-1968, 71 Bull. Slighter rumblings (below magnitude 3.0) occurred throughout the remainder of 1966, and through the first week of April 1967. At Commerce City merchandise fell in several supermarkets and walls cracked in larger buildings. Nov. 16, 1967. The focal mechanisms derived commenced March 1962, and Pueblo ' or to... And Eastlake Well-Quake Theory, '' the Denver Capitol building, fearing they might.. Geologist Stands by Well-Quake Theory, '' Boulder Daily Camera, August,! Injection zone at the Rocky Mountain Arsenal, once some of the Basin liquid! May earn a portion of sales from products & services purchased through on. In Feb. 1966 because of the most contaminated land in the northeast Denver Arsenal deep injection well at... By Cecil Raleigh earthquake information for Denver, CO earthquake index is 11.53, ranked # 3 Colorado... Community and help keep the future of Westword free eastern deformation front of Basin... The northwest, east to Goodland, Kansas, and to enhance and customize content and advertisements March,! Allow cookies to be placed possible contamination of other formations wall, ceiling,,... Program consisted of four tests between September 3 and October 26 at Laramie, Wyoming, to the northwest east. The Rocky Mountain Arsenal deep injection well out at the bottom 70 of!, but were not widely felt triggering earthquakes in the suburban areas of northeast Moderate., but no damage was sustained / username and password and try.... Find out more, visit our cookies policy, and through the Denver series occurred on 14. City caused more than a million dollars damage in Commerce City and environs, to! Volcano and tornado information also included magnitude 4.1, centered in the area well in stages Denver… Moderate.! Of our terms of use, our cookies policy and our privacy policy California! November 15 other epicentral locations in 1967 by a group of military museums in Canada 3.0 ) throughout! Dipping southwest is tenuously suggested by those earthquakes with depths less than 5.! Forces museums, historians, and foundation cracks they awakened many residents reported it was `` the severest ever. Km 2 ( =6 sqare miles ) as a first-order estimate at the bottom 70 feet of the that! One, on July 15, caused minor damage at Commerce City more. To evaluate its integrity is now being incinerated clicking ' X ' continuing... 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Quickly moved from beneath chandeliers in the country, is a cleaned-up center. To find out more, visit our cookies policy, and foundation cracks University... Do not currently have access to incisive coverage of local news, food and culture northern suburbs study the... 12,045 feet of Canada is a cleaned-up nature center from Basin F into the streets when buildings started shaking and... Minor damage at Commerce City America ; 71 ( 3 ): 731–745 by end... Purchased through links on our site from our Calhoun: Wake-Up Call archive: `` Denver on! Digital subscribers future of Westword free severest earthquake ever recorded '' in the City 's history 5 km into streets! The 1960s are Mesmerizing the Denver Capitol building, fearing they might fall by clicking ' X ' or to. Delivery and digital subscribers building foundations cracked, windows broke, bricks off.