#Texas #HurricaneHarvey #ICE Approximately 4,500 Inmates Being Evacuated From 3 Texas Prisons Amid Heavy Rains Texas Department of Criminal Justice #AceNewsDesk reports

#AceNewsReport – Aug.26: Immigrations and Customs Enforcement is moving detainees who are being held in facilities in Hurricane Harvey’s path, ahead of the potentially historic storm that’s barreling toward Texas #AceNewsDesk reports

Those currently being held at the Port Isabel Detention Center, located 30 miles east of Brownsville in Los Fresnos, Texas, are being transferred to facilities away from the storm’s impact area.Officials at Immigrations and Customs Enforcement and Customs and Border Protection released a joint statement on Friday indicating that “laws will not be suspended” in light of the storm, but they will ease up on non-criminal immigration operations at evacuation sites or shelters in the impacted areas.
The Department’s law enforcement components will be at the ready to help anyone in need of assistance. In evacuation or response, we are committed to making sure that we can assist local authorities quickly, safely, and efficiently,” the joint statement reads. “Routine non-criminal immigration enforcement operations will not be conducted at evacuation sites, or assistance centers such as shelters or food banks.”The statement continues, “the laws will not be suspended, and we will be vigilant against any effort by criminals to exploit disruptions caused by the storm.”The statement posted on the Customs and Border Protection website does not explicitly mention checkpoints, which the agency said would remain open in a statement reported on by the Texas Tribune. “Border Patrol checkpoints will not be closed unless there is a danger to the safety of the traveling public and our agents,” the statement to the Tribune reads. “Border Patrol resources, including personnel and transportation, will be deployed on an as needed basis to augment the efforts and capabilities of local-response authorities.”That statement prompted a strong response from the American Civil Liberties Union, which called it a “disgusting move.”“The Border Patrol should never keep checkpoints open during any natural disasters in the United States,” said Lorella Praeli, American Civil Liberties Union director of immigration policy and campaigns. “Everyone, no matter the color of their skin or background, is worth saving.”A question to Customs and Border Protection officials about the status of checkpoints during the hurricane was not immediately answered.The joint statement in regard to #HurricaneHarvey differs slightly from a 2016 statement from Immigrations and Customs Enforcement and Customs and Border Protection that was issued ahead of Hurricane Matthew. Then, the agencies were far more explicit about enforcement activities, including those at checkpoints and what to do with individuals held in state and local custody.“There will be no immigration enforcement initiatives associated with evacuations or sheltering related to Matthew, including the use of checkpoints for immigration enforcement purposes in impacted areas during an evacuation,” the 2016 statement reads #AceNewsDesk reports are provided by Sterling Publishing & Media News

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#ice, #texas

TEXAS: City Council of Denton repeal #fracking ban voted for by City Residents’

#AceNewsReport – Post Update: TEXAS:June.17: The City Council of the North Texas city of Denton on Wednesday repealed a ban on #fracking, voted for by city residents in November 2014.

 Water quality and quantity has not been affected by hundreds of fracking wells in and around Ponder, Texas, but residents complain of air quality from fracking operations, the town’s Director of Public Works Gary Morris told Sputnik

In November 2014, 59 percent of voters in Denton backed the bill prohibiting fracking within city limits amid rising concerns that the oil-and-gas-extraction technique would cause serious harm to the environment. The Texas Oil & Gas Association and the Texas General Land Office sued the city in response.

 On May 18, Texas governor Greg Abbott signed the House Bill 40 into law, making it the state’s prerogative to decide whether to allow #fracking in cities.

“The Denton City Council voted 6-1 to amend to repeal Initiative Ordinance No. 2014-01, known as the hydraulic fracturing ban. As this ban has been rendered unenforceable by the State of Texas in HB 40, it is in the overall interest of the Denton taxpayers to strategically repeal the ordinance,” a statement, published on the official website of the city of Denton, reads.

The City Council stressed that the decision was arrived at after taking into account all the residents’ concerns and the long-term interests of the city.

#Fracking is the practice of using high-pressure injections of water, sand and toxic chemicals into underground shale formations to extract natural resources. A number of researchers believe that #fracking can cause serious damage to the environment, and even trigger minor earthquakes.


Ace Worldwide News

#ban-title, #dallas, #denton, #denton-record-chronicle, #hydraulic-fracturing, #local-ordinance, #oil-and-gas-law-in-the-united-states, #texaco, #texas, #texas-general-land-office

TEXAS: ‘ Lawyer: Officer didn’t target black teens at Texas pool ‘

#AceNewsReport#Breaking Update:June.11: Texas officer was not targeting minorities:


DALLAS (AP) – A white Texas police officer was not targeting minorities when he wrestled a black teenage girl to the ground and brandished his gun outside a pool party, his lawyer said, but rather was fraught with emotion after responding earlier to two suicide calls.

As activists demanded Wednesday that prosecutors charge former officer David Eric Casebolt, his attorney Jane Bishkin said…

Read Full Story


Ace Worldwide News Group

#central-time-zone-north-america, #dallas, #mckinney, #police, #police-officer, #protest, #public-housing, #racial-segregation, #texas


#AceNewsServices – TEXAS – October 30 – The Texas Department of Public Safety might as well be called the Texas Department of Public Invasiveness. 

They have launched a plan to fingerprint every single person of driving age in the state, after which they will add the person’s prints to the criminal database.

Is it just me or is that a rather Dystopian plan?
Jon Cassidy of Watchdog.org writes:

The credit for breaking the news on those two items goes to consumer affairs columnist Dave Lieber of the Dallas Morning News, whose long-running “Watchdog” column often shows up in my Google Alerts, for obvious reasons.

As an old-school columnist, Lieber tends to keep his opinions subdued, and he does not generally call people dishonest.

But I have no problem with doing that, so I’d like to point out that the DPS spokesman he quotes at length is less than straightforward about his department’s legal authority.

Source: Activist Post: Did You Hear? Texas Plans to Fingerprint EVERYONE within the Next 12 Years.




#AceBreakingNews – UNITED STATES (Washington) – October 19 – The Supreme Court allowed Texas on Saturday to enforce its photo identification law at the polls in the upcoming elections, reaching the opposite conclusion from a similar Wisconsin case a week earlier, following last weeks refusal.  

WASHINGTON — The Supreme Court allowed Texas on Saturday to enforce its photo identification law at the polls in the upcoming elections.

WASHINGTON — The Supreme Court allowed Texas on Saturday to enforce its photo identification law at the polls in the upcoming elections.

The order, coming two days before early voting is set to begin, completes a series of voting rights challenges that had come before the court on an emergency basis. The justices also upheld new restrictions on voting in North Carolina and Ohio that did not include photo ID requirements.

WASHINGTON — The Supreme Court allowed Texas on Saturday to enforce its photo identification law at the polls in the upcoming elections.

WASHINGTON — The Supreme Court allowed Texas on Saturday to enforce its photo identification law at the polls in the upcoming elections.

The order was not signed, but Justice Ruth Bader Ginsburg filed a six-page dissent, joined by Justices Sonia Sotomayor and Elena Kagan.

“The greatest threat to public confidence in elections in this case is the prospect of enforcing a purposefully discriminatory law, one that likely imposes an unconstitutional poll tax and risks denying the right to vote to hundreds of thousands of eligible voters,” Ginsburg said.



#north-carolina, #ohio, #texas, #united-states, #washington, #wisconsin


#AceBreakingNews – UNITED STATES (Texas) – October 19 – The health care worker aboard a Carnival Cruise Lines ship who was being monitored for signs of Ebola passed a blood test and was allowed to leave with other passengers when the ship docked Sunday in Texas, health officials said.

“We are able to confirm that the (Ebola) test was negative,” Galveston County Health Authority spokesman Kurt Koopman said in an e-mail to USA TODAY. 



#ebola, #galveston-county-health, #texas, #united-states

UNITED STATES: ' US Border Patrol Opens Fire on American Militia Member at Texas Border '

#AceWorldNews – UNITED STATES (Texas) – August 30 – The US Border Patrol announced on Friday that one of its agents fired numerous shots at an unidentified person at the Texas border with Mexico.

​The person in question was armed but did not return fire and was not hit, and later came forward as an American militia member.

Despite calls from Border Patrol to back off, several militia groups are now patrolling the border in an attempt to discourage immigrants from entering the US illegally.


#texas, #united-states, #us-border-patrol

Harry Reid: ' Immigrants Who Entered US Illegally at Young Age Should Not Be Deported '

#AceBreakingNews – UNITED STATES (Washington) – July 17 – Senate Majority Leader Harry Reid (D-Nev.) says immigrants who came to the country illegally at a young age are now legitimate residents and should not be deported.

Reid made the remarks in response to Sen. Ted Cruz (R-Texas), who is demanding that an emergency spending bill for the border reverse President Obama’s 2012 order that halted deportations of so-called Dreamers.

By Alexander Bolton @ The Hill 


#barack-obama, #harry-reid, #henry-cuellar, #obama, #party-leaders-of-the-united-states-senate, #reid, #ted-cruz, #texas

‘ Woman Sentenced to 18 Years in Prison for Sending Barack Obama Ricin Laced Letters ‘

#AceWorldNewsUNITED STATES (Texas) –  July 16 – A woman from Texas has been sentenced to 18 years in prison after sending US President Barack Obama and former New York Mayor Michael Bloomberg letters laced with highly toxic ricin.


Thirty-six-year-old Shannon Guess Richardson was sentenced Wednesday after having pleaded guilty in December to possessing and producing a biological toxin.

Richardson was arrested in June 2013 after authorities said she tried to implicate her estranged husband after he filed for divorce.

Prosecutors say Richardson, who had minor acting roles in film and television, mailed three letters from New Boston, outside Texarkana, then went to police and claimed that her husband did it.




#barack-obama, #michael-bloomberg, #new-york, #plea, #richardson, #ricin, #texarkana, #texarkana-texas, #texas

‘Water War in Texas One Man's Past and Future '

#AceNewsServices TEXAS – June 06 – Gary Cheatwood grew up near the town of Cuthand, in far northeast Texas, and he always found peace along the wooded banks of Little Mustang Creek. His grandfather had bought 100 acres in 1917 and now Gary’s family owns 600 acres of bottom land near where the creek’s clear waters meet the Sulphur River.

He especially loves the woods around the creek—some 70 species of hardwood trees, including a massive Texas honey locust that ranks as official state champion. “This forest is not making money,” says Cheatwood, a retired surveyor and construction manager. “But a lot of things are more important than money.

The trees give me pleasure.”

Everything about the land pleases Cheatwood. Still wiry and lean at 75, he walks it every week, always wearing his standard outfit of lace-up work boots, jeans, plaid flannel shirt, and baseball cap.

He collects finely crafted Caddo and Cherokee Indian arrowheads.

In the spring, blue and yellow wild-flowers bloom.

He takes pleasure, too, in looking for rare creatures—the American burying beetle, a certain obscure shrew, even the eastern timber rattlesnake.

Yet as he stood on the creek bank this January, he knew his family could have their homestead taken by the state of Texas. If Texas Water Development Board planners have their way, sometime in the next 20 years or so Cheatwood’s land will disappear under Marvin Nichols Reservoir, a proposed 72,000-acre lake meant to provide water to the Dallas-Ft. Worth “Metroplex” 135 miles to the west. Some 4,000 of his neighbours (a few estimates go as high as 10,000 people) will also become refugees, driven off their lands, either for lake bottom or for the hundreds of thousands of acres to be taken as “mitigation.”

All over rural Texas, large swaths of farmland and ranchland and coastal estuaries face a similarly precarious future. A convergence of extended drought, supply-side water policy, and relentless economic and population growth has led to bitter fights over how water is to be used.

The current drought began in 2006 and, with the exception of occasional years of what was once considered near-normal rain, has never really gone away. By far the state’s greatest climatic trauma occurred in 2011, when a full 85 percent of the state qualified as suffering from “exceptional drought,” the most severe category listed by the U.S. Drought Monitor. Hot, dry winds blew across the state from early spring through the summer and fall. For weeks temperatures ranged well over 100 degrees, and reached 110 degrees in places.

Texas dried out so much that it literally caught fire: 31,453 wildfires burned more than 6,000 square miles. Gary Cheatwood’s tiny Cuthand Volunteer Fire Department fought 18 blazes by itself and cooperated with other agencies in fighting dozens more. “We were afraid to leave our homes to get groceries,” Cheatwood says. “If we weren’t at home when the fires came, no one could call for help.” An estimated 300 million trees died from lack of water.

People bought feed to keep birds and deer alive. Reservoirs in West Texas ran dry.




` Tornado hits US States of Oklahoma and Arkansas Leaving Devastation in its Quake '

#AceWorldNews – UNITED STATES – April 28 – A powerful tornado storm system has ripped through several US states, killing one person in Oklahoma and at least 16 others in central Arkansas while causing major damage in the Great Plains, Midwest and Southern states.

A tornado killed one person in Quapaw, a small residence in Oklahoma, on the border of Kansas and Missouri, authorities announced, saying the storm struck the town around 5:30pm local time.

Twitter Reports:

My hometown sustained a direct #tornado hit. Pray for those in Quapaw, Oklahoma and neighboring communities affected. pic.twitter.com/B8deCqBKaP
— Mr. Saturday Night (@MSN_Barry) April 28, 2014
The authorities are still trying to access the scene which has allegedly suffered damage to half of the community.

2 dead after tornado strikes Quapaw, Oklahoma. @cbsnewspath: Aerials of storm damage. Via @tomcbs4 pic.twitter.com/fNcAxfhn2r
— Brendon Geoffrion (@tvbrendon) April 28, 2014
“Looks like about half of the town got extensive damage as well as the fire department,” Ottawa County Emergency Management director Joe Dan Morgan announced.

From Katie Elizabeth: Damage earlier today in Baxter Springs, KS from a tornado. #KSWXpic.twitter.com/e7XLflnwdd
— Nathan Young (@nvyoung) April 28, 2014
The tornado then continued towards, Baxter, where authorities say the twister injured several people and caused extensive damage. Emergency service responders are now checking the roughly 4,200 residents.

Tornado earlier in Baxter Springs, photo by Trevor Burrows pic.twitter.com/D5TMIyLGUg
— William Lynch (@WilliamLynchMO) April 27, 2014
Tornado warnings are also in effect in for parts of Texas, Arkansas and Tennessee. More twisters were also recorded in parts of Nebraska, Iowa and Missouri, but no injuries were reported there.

“The greatest risk for a few intense tornadoes will exist across much of Arkansas perhaps into western and central Missouri,” a weather service advisory said.

Pray for Mayflower, guys. It’s needed right now. #arwxpic.twitter.com/NGLO5lxb9v
— Jesse (@WhistlePig11) April 28, 2014
Television footage showed damaged and overturned vehicles after a massive tornado struck about 10 miles (16km) west of Little Rock, Arkansas moving north-eastward for 30 miles (48km).

The twister ripped through along Interstate 40 between the suburbs of Maumelle and Mayflower, causing damage there. There were no immediate reports of causalities there. But a “mass casualty situation” was reported in the town of Vilonia, Arkansas, a spokesman for the Faulkner County Sheriff’s office said.

The Arkansas Department of Emergency Management confirmed late Sunday that at least eleven people had died after a tornado tore through central Arkansas.

According to the Storm Prediction Center of the national weather service, affected areas that remain under threat of “severe potential” tornadoes with “95 percent probability of watch issuance” are Arkansas, far eastern Oklahoma, and far north-east Texas.


#arkansas, #oklahoma, #texas, #united-states

` White Supremacist Organisation the `Klu Klux Klan ‘ is on the Rise and is Kicking off Their Recruitment Drive’

#AceNewsServices – UNITED STATES – April 14 – (RT) – White supremacist organization the Ku Klux Klan looks determined to take advantage of a struggling economy, anger over immigration and wariness of America’s first black president as it kicks off an aggressive new recruitment drive.

Borrowing a popular theme from US wartime propaganda posters, American neighbourhoods in Texas, Louisiana, Illinois and Pennsylvania over the weekend discovered leaflets in their mailboxes and on car windshields that read, “The KKK Wants You!” – complete with a depiction of a hooded figure adorned with Klan insignia pointing at the reader.http://www.kkkknights.com/

The leaflets provide contact numbers for local recruiting offices, as well as “24/7 hotlines” and associated websites.

“Someone is passing out hateful flyers in the Acadiana area, telling Eunice residents the KKK is ‘awake’,” reported WGNO of New Orleans.

The flyers were signed by the “Loyal White Knights,” which their website ‘Loyal White Knights of the Ku Klux Klan’ claims is “the largest and most active Klan in America.”

Read More: http://on.rt.com/9m3dgm


#illinois, #ku-klux-klan, #louisiana, #pennsylvania, #texas, #united-states, #us

US President `George W Bush ' Dabbles in a New kind of Oil this Time as a Portrait Artist'

#AceNewsServices – UNITED STATES – April 05 – (VOA) – Former U.S. President George W. Bush has a new title to add to his resume: painter.

The subjects of his paintings? World leaders – a theme he knows well.

Bush’s portraits go on display in his presidential library and museum in Dallas, Texas Saturday.

The exhibit, titled “The Art of Leadership: A President’s Personal Diplomacy,” will feature his paintings of world figures he worked with during his presidency from 2001 to 2009, including Russian President Vladimir Putin, former British Prime Minister Tony Blair and Tibetan spiritual leader the Dalai Lama (BBC)

Bush began his painting hobby two years ago. In an interview on NBC with his daughter Jenna Bush Hager, who works for the network,

Bush said although he does not think he is a great artist, “a whole new world has opened up” for him.


#dalai-lama, #dallas, #george-w-bush, #russian-president-vladimir-putin, #texas, #tony-blair, #united-states

` Michigan’s Ban on `Same Sex-Marriage ‘ is Ruled is Unconstitutional ‘

#AceWorldNews – MICHIGAN – March 21 – A federal judge struck down on Friday Michigan’s ban on same-sex marriage, saying the law passed by voters a decade ago is unconstitutional. US district court Judge Bernard Friedman’s ruling, however, does not make clear whether the state can file an appeal.

Nor is it clear whether marriages can begin immediately, given the timing of the decision came after most county clerk offices in the state were closed.

Seventeen states and the District of Columbia have legalized same-sex marriage.

Since December, bans on gay marriage have been overturned in Texas, Utah, Oklahoma, and Virginia, though appeals to those decisions have put the cases on hold.


#district-of-columbia, #michigan, #oklahoma, #texas, #us, #utah, #virginia

` Texas Pursuit to arrest a man Fleeing, Injures 23 people 5 Critically after Crashing through SXSW Festival Barricade's '

#AceWorldNews A man and woman were killed early Thursday after a suspected drunken driver fleeing from arrest crashed through barricades set up for the SXSW Interactive Festival, Texas police said.

Austin Police Chief Art Acevedo said 23 others were injured, five critically, in the crash that happened around 12:30am as the driver tried to evade a pursuing police officer.

The motorist also struck a cab before crashing, jumping out of his car and trying to run.

A pursuing officer shocked him with a stun gun and took him into custody, AP reported.


#ans2014, #ap, #art-acevedo, #austin-police-chief, #austin-texas, #sxsw-interactive, #texas

` Cupid Drone fires a `Dart of Evil ' and not an `Arrow of Love ' to bring downs its Victim's '

#AceNewsServices reports that `CUPID Drone ‘  to ‘shock the world’ with 80,000 volt stun gun

Published time: March 08, 2014 14:40
Image from leaksource.infoImage from leaksource.info
A Texas film has revealed an app controlled security drone that can zap intruders with an 80,000 volt taser dart. But Human operators still have to sanction any attack – for now.

Web firm, Chaotic Moon studios, has created a drone that uses a taser instead of missiles, in what could be a policeman’s new best friend in the battle against crime.

It’s called CUPID, but unlike its name, it could turn out as a deadly piece of kit. The name stands for Chaotic Unmanned Personal Intercept Drone and can fire a dart packed with 80,000 volts at any unwanted intruder or criminal on the run.

In a video released on Saturday, CUPID fires the dart at an intern who is brought instantly to the ground.

Medical staff then rushes to assistance before the video cuts out.

Cupid was revealed at the SXSW Interactive Festival in Austin Texas as a concept for how security might be implemented in the future.

“The drone can be deployed when an alarm is triggered. It can find a subject and send live video to the owners phone and ask if you want to authorize the subject or detain them. If you detain them, it drops into fully autonomous mode to detain them until police arrive. If need be stunning them with 80,000 volts of electricity to render them incapacitated,” the firm said in a statement.

The firm said it hopes the drone will “shock the world”, although it was not clear whether they were being ironic.

They also plan to bring out a pepper spray version in the near future.

Chaotic Moon is also developing an EMP drone to knock spying paparazzi drones out of the sky.

The EMP drone would fly to within about 2 meters of the intruding drone and blast its electronics with an electromagnetic pulse that would mess up the offending drones electronics and knock it out of the sky.



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#acenewsservices, #austin-texas, #chaotic-moon, #cupid, #electromagnetic-pulse, #moon, #sxsw-interactive, #texas, #united-states, #volt

` Edward Snowden will speak out in a `Video Conference’ about `Government Intrusion into Privacy ‘ in a panel discussion being held in Texas ‘

#AceSecurityNews says that the former US security contractor Edward Snowden will participate remotely in a panel discussion next week in Texas about governmental intrusion into privacy, Reuters reported.

Snowden is in Russia and faces arrest if he sets foot on US soil.

He is expected to answer questions via video conference at the South by Southwest Interactive Festival in Austin on Monday, according to conference organizers. Snowden is to speak on how the US National Security Agency uses technology to keep tabs on people.


#edwardsnowden, #privacy, #reuters, #texas, #us-national-security-agency

#NSA : “High Court Agrees to Delve into Privacy and Technology to Test Whether Cellphones and Smartphones Can be Searched without Warrant”

#AceBreakingNews says WASHINGTON — Delving into the legal jungle of privacy and technology, the Supreme Court agreed Friday to consider two cases that test whether cellphones and smartphones can be searched without a warrant.

The cases, which could be heard by the court in April and decided by late June, involve searches performed by police that turned relatively minor traffic and drug infractions into major felony convictions. In both cases, the crucial information was found on the suspects’ mobile phones.

On one level, the cases represent an inevitable Supreme Court entry into the world of cellphones, owned by more than nine in 10 American adults. In the past few years, courts from California to Texas to Florida have split over the issue of cellphones and digital content.

For more on this story, go to http://usat.ly/1dYBqU3.

#california, #cellphones, #florida, #privacy, #smartphones, #supreme-court, #technology, #texas, #washington

Science of Sink Holes: So Are the Builders Causing the Disaster's to Occur by Building Our Homes and Roads in the Wrong Places?

: Santa Fe River: Sinkhole where the river goe...

: Santa Fe River: Sinkhole where the river goes underground for 3 miles, forming a natural land bridge. (Photo credit: Wikipedia)

Sinkholes are they causing the disaster to occur or are the builder’s by sighting our homes and roads in the wrong places, without due regard to how, what and why they occur?

Learn more about sinkholes.USGS Science Feature

The Science of Sinkholes

Picture of a sinkhole in Florida.Sinkholes are common where the rock below the land surface is limestone, carbonate rock, salt beds, or rocks that can naturally be dissolved by groundwater circulating through them. As the rock dissolves, spaces and caverns develop underground. Sinkholes are dramatic because the land usually stays intact for a while until the underground spaces just get too big. If there is not enough support for the land above the spaces then a sudden collapse of the land surface can occur. These collapses can be small, or, as this picture shows, or they can be huge and can occur where a house or road is on top.

The most damage from sinkholes tends to occur in Florida, Texas, Alabama, Missouri, Kentucky, Tennessee, and Pennsylvania. The picture to the left shows a sinkhole that quickly opened up in Florida, apparently eating a swimming pool, some roadway, and buildings.

What is a “Sinkhole”?

Picture of a sinkhole that formed below part of a house.A sinkhole is an area of ground that has no natural external surface drainage–when it rains, all of the water stays inside the sinkhole and typically drains into the subsurface. Sinkholes can vary from a few feet to hundreds of acres and from less than 1 to more than 100 feet deep. Some are shaped like shallow bowls or saucers whereas others have vertical walls; some hold water and form natural ponds. Typically, sinkholes form so slowly that little change is noticeable, but they can form suddenly when a collapse occurs. Such a collapse can have a dramatic effect if it occurs in an urban setting.

Areas prone to collapse sinkholes

The map below shows areas of the United States where certain rock types that are susceptible to dissolution in water occur. In these areas the formation of underground cavities can form and catastrophic sinkholes can happen. These rock types are evaporites (salt, gypsum, and anhydrite) and carbonates (limestone and dolomite). Evaporite rocks underlie about 35 to 40 percent of the United States, though in many areas they are buried at great depths.

Map of the United States showing areas where rock that are prone to dissolution and sinkholes are prevalent.

Types of sinkholes

Since Florida is prone to sinkholes, it is a good place to use to discuss some different types of sinkholes and the geologic and hydrologic processes that form them. The processes of dissolution, where surface rock that are soluble to weak acids, are dissolved, and suffosion, where cavities form below the land surface, are responsible for virtually all sinkholes in Florida.

Dissolution sinkholes

Diagram of a sinkhole caused by dissolution of subsurface rock, generally limestone. Dissolution of the limestone or dolomite is most intensive where the water first contacts the rock surface. Aggressive dissolution also occurs where flow is focussed in preexisting openings in the rock, such as along joints, fractures, and bedding planes, and in the zone of water-table fluctuation where groundwater is in contact with the atmosphere.

Cover-subsidence sinkholes

Cover-subsidence sinkholes tend to develop gradually where the covering sediments are permeable and contain sand. In areas where cover material is thicker or sediments contain more clay, cover-subsidence sinkholes are relatively uncommon, are smaller, and may go undetected for long periods.

Cover-collapse sinkholes

Cover-collapse sinkholes may develop abruptly (over a period of hours) and cause catastrophic damages. They occur where the covering sediments contain a significant amount of clay. Over time, surface drainage, erosion, and deposition of sinkhole into a shallower bowl-shaped depression.

Diagram showing cover-collapse types of sinkholes.

Sinkholes can be human-induced

New sinkholes have been correlated to land-use practices, especially from groundwater pumping and from construction and development practices. Sinkholes can also form when natural water-drainage patterns are changed and new water-diversion systems are developed. Some sinkholes form when the land surface is changed, such as when industrial and runoff-storage ponds are created. The substantial weight of the new material can trigger an underground collapse of supporting material, thus causing a sinkhole.

Hydrologic cycle of water from atmosphere to g...

Hydrologic cycle of water from atmosphere to ground in Florida, including the formation of sinkholes, artesian wells, springs, and confluence of salt water from the ocean (Photo credit: Wikipedia)

The overburden sediments that cover buried cavities in the aquifer systems are delicately balanced by ground-water fluid pressure. The water below ground is actually helping to keep the surface soil in place. Groundwater pumping for urban water supply and for irrigation can produce new sinkholes In sinkhole-prone areas. If pumping results in a lowering of groundwater levels, then underground structural failure, and thus, sinkholes, can occur.

Take our groundwater true/false quiz.  Groundwater true/false quiz

Sources and more information

 • Sinkholes, USGS Fact Sheet 2007-3060
• Land Subsidence in the United States, U.S. Geological Survey Circular 1182
• Land Subsidence in the United States, USGS Fact Sheet-165-00
• Carbonate-rock aquifers, Aquifer Basics


#acesciencenews, #alabama, #environment, #florida, #groundwater, #land-surface, #sinkhole, #terrain, #texas, #united-states, #united-states-geological-survey, #water-resources

Ace Breaking News – Abortion restrictions passed by the Texas Legislature are unconstitutional

Abortion restrictions passed by the Texas Legislature are unconstitutional and won’t go into effect Tuesday as scheduled, a federal judge has ruled.
For more on this story, go to http://usat.ly/iimQp4.

#acenewsservices, #abortion, #texas