The tectonic history of the Ellsworth Mountains, West Antarctica: reconciling a Gondwana enigma

first_imgEarly Paleozoic orogenesis has been recognized along the southern African (Saldanian orogeny) and East Antarctic (Ross orogeny) sectors of the Gondwana paleo- Pacific margin. However, the absence of a contemporaneous orogenic event in the Ellsworth Mountains of West Antarctica, once a contiguous part of this margin, has resulted in their geology being considered enigmatic. In this contribution, widespread, detailed structural studies from all stratigraphic levels of the Ellsworth Mountains allow their tectonic evolution to be reassessed. Geochemical, stratigraphic, and structural data indicate that the Middle to Upper Cambrian Heritage Group developed in a continental rift basin. Multiple observations of the crucial end-Cambrian contact between this rift sequence and the overlying Crashsite Group reveal the contact to be regionally conformable; there are localized outcrop-scale unconformities. Furthermore, structural continuity can be demonstrated across this key boundary, thus precluding the possibility of an end-Cambrian orogenic event. The entire stratigraphic succession was affected by two post-Permian phases of deformation. D1 structures are locally developed and superimposed by the main dextral transpressive D2 Permian−Triassic Gondwanian deformation event. D2 is succeeded by an episode of extension orthogonal to orogenic strike. Recent geochronological data on the early Paleozoic evolution of the Cape fold belt reveal a strong tectonostratigraphic correlation with the Ellsworth Mountains, indicating that this sector of the Gondwana paleo-Pacific margin was affected by Middle to Late Cambrian rifting. A new tectonic model is proposed for the southwestern paleo-Pacific margin of Gondwana that accounts for the presence of rifting along a margin otherwise dominated by active subduction.last_img read more

No-till saves roads

first_imgBy Brad HaireUniversity of GeorgiaWayne Bloodworth says the dirt roads in Pulaski County don’t need to be fixed as much as they used to. He, the county commissioner and the local University of Georgia Cooperative Extension agent know why.A farming practice known as conservation tillage has kept the farm fields in this rural, central-Georgia county from eroding and clogging the 250 miles of dirt roads that run by them.It has saved the county money, too, said Bloodworth, the Pulaski County road manager.A 1-mile stretch of bad dirt road can cost a five-man crew 10 hours of work and cost Pulaski County taxpayers about $3,000 to fix, he said.”Over the past few years,” Bloodworth said, “I know conservation tillage, when you talk about average day-to-day maintenance, has helped us save considerable time and money with all our dirt roads.”The idea behind conservation tillage, or no-till farming, is to disturb the soil in a field as little as possible. A farmer can plant crops like peanuts or cotton between old plant residue, either from a cover crop or from a previous crop, reducing harrowing or cultivation. This improves soil, slows evaporation and decreases water runoff and field erosion.Farming and good dirt roads haven’t always been linked in Pulaski County. Farmers using conventional practices would often harrow fields all the way to the ditches, messing them up, opening the fields to erosion and turning dirt roads into big ditches. Brooks Bailey, the Pulaski County commissioner, had a problem then.Bailey wanted to find a way the farmers in his county could get the most out of their fields. But he and his dirt-road voters wanted to find a way to keep the dirt roads roads, he said. So five years ago, he went to his local UGA Extension office for the answer.Ronnie Barentine, the UGA Extension coordinator in Pulaski County, knew conservation tillage was nothing new. Agricultural scientists had studied it for decades. But he thought it could be the answer to Bailey’s dirt-road problem.Besides, it could help farmers squeezed between low commodity prices and high energy costs, too. “I just started studying all I could about it and going to trainings all over,” said Barentine, who has since served on a multistate conservation-tillage task force.There used to be a myth that crops planted using conservation tillage didn’t yield as well as those planted conventionally. That’s wrong, Barentine said. Data shows that yields are the same, if not better. And during a drought, it keeps precious moisture around growing plants’ roots.Farmers also cut the number of times they go across a field on a tractor by half during planting. This saves time, equipment and fuel, he said. Conservation tillage builds organic matter and beneficial microbes in the soil, too.Most important to the dirt roads, it can reduce runoff by 50 percent and keep tons of soil locked in a field.Barentine took the message to the farmers. Pulaski County farmers now use conservation tillage on almost all of the county’s 40,000 acres of farm land.”We’re seeing positive changes in soil quality,” said Barry Martin, a Pulaski County farmer “And I would hate to see my fuel bill if I still had to make all those trips across the field.””What has really been exciting about this is that besides seeing the economic benefit,” Barentine said, “the farmers now see how conservation tillage is the right thing to do.””Our county depends heavily on agriculture, and conservation tillage has been saving us on the county level,” Bailey said. “And we’ve wound up with better roads. I’m sure it’s saving or could save other agricultural counties, too.”last_img read more

Things to know: Sharks’ Erik Karlsson is enjoying his first California winter

first_imgSAN JOSE — Sharks coach Pete DeBoer isn’t afraid to acknowledge that the bar is set a little higher for his team this year.In the wake of Erik Karlsson’s arrival in training camp, the Sharks are expected to contend for a Stanley Cup this season. Anything short of that goal will be a disappointment.“I’m not one of those guys that doesn’t want to talk about it,” said DeBoer, who will coach in his 800th game behind an NHL bench on Monday. “That’s the reality.”Get Sharks news in your inbox. Sign …last_img

Airspace restrictions for Confed Cup

first_img28 May 2009Airspace restrictions around 2009 Fifa Confederations Cup host cities will be tightly enforced as part of a raft of measures to ensure that the country’s skies are safe throughout the tournament.Briefing journalists in Johannesburg on Wednesday, South African Civil Aviation Authority (SACAA) chief executive Colin Jordaan said that all aircraft flying within an 80km radius of Johannesburg, Pretroria, Bloemfontein and Rustenburg would require prior approval before taking to the skies.The restrictions, put in place for security reasons, will apply from midnight on 13 June to midnight on 28 June. They will not affect essential services such as emergency helicopters.An eight-kilometre-radius restriction will also be imposed around the stadiums hosting matches during the tournament. “No unauthorised pilots will be allowed to fly over the venues two hours before the start of each game and one hour after the final whistle,” Jordaan said.He said he was satisfied that sufficient measures had been put in place to handle increased air traffic, thanks to a partnership with the Transport Department, the Air Traffic and Navigation Services Company, SA Police Service and SA Air Force (SAAF).According to Brigadier-General Les Lombard from the SAAF, several exercises have been conducted over the past few months to test the state of the country’s readiness.The most recent exercise was conducted in March, when over 7 000 flight authorisations were completed over a two-day period with minimal complaints received from the aviation community.The exercise “was very similar to what will be the real event during the Confederations Cup,” Lombard said, adding that they had received good cooperation from the aviation community.Lombard said the final exercises to test the readiness of the country’s major airports would take place next week.Jordaan said that while passenger traffic was expected to increase dramatically leading up to and during the event, as soccer fans and players arrive in the country and travel around, chartered flights were expected to be minimal.He said notices spelling out what was required of them before flying had been issued to pilots, and officials would be stationed at all airfields to assist pilots needing authorisation to take to the air.Looking ahead, Jordaan said the aviation authority was expecting about 400 000 international fans to visit South Africa during the 2010 Fifa World Cup.“This means there will be major challenges as far as aviation is concerned, because there will be 20 co-coordinated airports – something which is not there for [the 2009 Confederations Cup”.At the same time, the Confederations Cup “will be a true test of South Africa’s capabilities and readiness to host the world’s biggest soccer extravaganza, the 2010 Fifa World Cup,” Jordaan said.Source: BuaNewslast_img read more

Singer and HIV/Aids activist Musa Njoko: 17 years and going strong

first_imgSinger and HIV/Aids activist Musa Njoko speaks about living with HIV/Aids for 17 years and how she uses her experience to inspire others in the fight against the disease.  (Image: Nomusa Njoko)She had been an asthma sufferer since the age of 12, an affliction she really never outgrew. At 22, it seemed as though the lung disease had reared its ugly head again.As usual, she went to see her doctor for her monthly asthma checkup. At the time it sounded a bit strange when he suggested she have an HIV test done as she was not responding well to her prescribed medication as in the past.“The doctor said that I kind of fit the profile of an HIV positive person.”And true to his suspicion, she was told that she was HIV-positive, something that never existed in her world.“I was devastated and frustrated. I didn’t know how it was transmitted and how I ended up with the virus. There was a lot of confusion at the time because the doctor told me that I had three months to live,” she says.Aids activist, gospel artistToday, 39-year-old Nomusa Njoko, fondly known as Musa, is one of South Africa’s best-known Aids activists – and also one of the country’s most sought-after gospel artists.“I contracted the virus from a partner that I had at the time,” Njoko says. “I then decided to inform my former partner. We were no longer together at the time. It was a short-lived relationship. I told him and, based on his reaction, it seemed as if he already knew.”The WHO/UNAids estimated the number of people living with HIV in South Africa at 5.575-million in 2010. Of these, an estimated 518 000 were children under 15 years, while 2.95-million were adult females over the age of 15.At 22, Njoko was like any other young adult, trying to figure out who she really was, enjoying life with her friends and family.‘I had to grow up in that moment’“I had to grow up in that moment,” she says. “I had to think differently compared to other 22-year-olds. I had to mature, I had to grow up and deal with issues that other 22-year-olds didn’t have to think about.”While initially in shock, her family supported her throughout her illness, as they still do till this day.“There was a lot of frustration and confusion, but fortunately, we are a strong Christian-based family, so we were able to get through everything together.”In 1995, when she publicly disclosed her status, some members of her community were hostile towards her.At that time, says Njoko, treatment for the virus was not available. “We had more challenges in those days. You basically had to become your own research … Information back then was complicated, and it was available for scientists and medical practitioners. It slowly started being interpreted into layman’s language.”In 2009, South African President Jacob Zuma announced life-changing policies that included HIV-positive people with a CD4 count of 350 or less receiving free anti-retroviral (ARV) treatment; pregnant HIV-positive women with a CD4 count of 350 or with symptoms, regardless of their CD4 count, getting access to treatment, and HIV-positive pregnant women being put on treatment at 14 weeks to protect the baby.The government’s HIV Counselling and Testing (HCT) campaign was launched in April 2010 as part of a nationwide initiative to get at least 15-million South Africans to know their HIV status. By the end of June this year, the campaign had reached over 14.7-million South Africans.‘More needs to be done to educate people’Njoko commends the government’s response to the virus, but adds that more still needs to be done to educate people.“Up until recently, government has been generally reactive. But we are now seeing government being proactive,” she says. “The President made major announcements and interventions two years ago. And with the introduction of the NHI [National Health Insurance] soon, those who are HIV-positive will have better access to treatment.”Zuma launched the new National Strategic Plan (NSP) on HIV/Aids 2012-16 on Thursday, World Aids Day.One of the key decisions included in the plan is the development of a single integrated strategy for HIV, Sexually Transmitted Infections (STIs) and Tuberculosis (TB).Tackling HIV and TB togetherThis is primarily due to the high co-infection rate between HIV and TB, as well as HIV and STIs. Currently, South Africa faces one of the worst dual epidemics of HIV and TB in the world, at 73 percent.“I have suffered from TB three times and the failure to diagnose early is the problem,” says Njoko. “It is a major killer among HIV-positive persons, even those on treatment.“ARVs do not address opportunistic infections,” Njoko adds. “It is critical that when one tests for HIV, they test for TB as well. That will ultimately prevent deaths.”Findings of the Mortality and Causes of Death in South Africa report for 2009, recently released by Statistics South Africa, showed that tuberculosis was the most commonly mentioned cause of death on certificates.In 2009, tuberculosis continued to be the most commonly mentioned cause of death on death notification forms, as well as the leading underlying natural cause of death in the country.Fighting the stigmaAlthough many strides have been made in combating the HIV/Aids epidemic, and many affected and infected families are open about the virus, stigmatisation is still a major problem, says Njoko.“Stigma is rife … To eliminate stigma, it is going to take our leaders to pioneer disclosure. It needs to start from the top, [then] it will be easier for ordinary people to disclose.”Being a musician has also helped Njoko spread the message. Music has helped her get people’s attention, and it’s through her music, as well as her job as social marketing and mobilisation deputy manager at the KwaZulu-Natal Department of Health, that she speaks about the effects of the virus.“Through my job I am able to influence behaviour change and develop meaningful messages and also to improve greater involvement of people living with HIV.”‘No death sentenceNjoko has been living with HIV for the last 17 years, and while many may take think that the virus is a death sentence, she urges those who are positive to live life to the fullest and look after their health.“Every situation is unique … It can never be the same. It lives in your body in different ways. You need to know your body and the virus better than anyone else.“Don’t live your life for the virus,” says Njoko. “Don’t let the virus direct or order the steps of your life. Whatever dreams you have – live them or create new dreams.“Life excites me … I love living,” she says. “I cannot let anything reduce my life. I’ve learnt to flow with the wind and take each day as it comes.”Source: BuaNewsWould you like to use this article in your publication or on your website? See Using Brand South Africa material.last_img read more

Ohio Ag Weather Forecast September 23, 2019

first_imgShare Facebook Twitter Google + LinkedIn Pinterest A frontal boundary is working through the state today, and will bring good moisture to 80% of the state. WE expect rain totals to be .25″-.75″. Action will be done by late afternoon/evening, and we clear out overnight. This front will be by far the best organized round of moisture over the next 10 days.Sunny and dry tomorrow, then partly sunny on Wednesday. Temps will be normal to slightly above normal, but not even remotely close to the warmth of this past weekend. Overnight Wednesday night through midday Thursday we have to keep an eye out for a few scattered showers. These will have potential for only a few hundredths to .3″ and only 70% coverage. Most of that will be in the norther half of the state, but we wont rule it out in other areas.Dry to finish the week next week, next weekend and through Monday the 30th. Temps will continue to be mostly normal to a bit above.A front next Tuesday (1st) through Wednesday (2nd) has the potential for scattered showers from I-70 north. This is a slow, sagging front, but it does not have an inordinate amount of moisture with it…so rains are not that impressive. A few hundredths to .4″ look to be the most likely totals for the time being. Coverage will be 70% from I-70 north.10 day rain potentialThe extended period shows cooler air headed toward the region and slightly more frequent chances of moisture. However, we still only see one well organized, strong front, and that is likely early in the 11-16 day window, around Thursday the 3rd into early Friday the 4th.last_img read more

Fatherly instinct kicks in as Oliver Almadro rushes to Isa Molde’s side after injury

first_img“I really try to take care of my players and I act as a father to them and I’d be the first to suffer any pain if anything bad happens to them,” said Almadro in Filipino after the Lady Eagles’ 25-23, 25-16, 25-23 win. “We all know these kids and I always pray for their safety and of course for all the players here in the UAAP.”READ: Sigh of relief: No serious injury for UP hitter Isa Molde“I said a short prayer for her and it will ease up the negative vibes. I want to help even in the smallest way possible.”Almadro, whose Lady Eagles improved to a league-best 8-1 record, added that he wants nothing but a quick recovery for Molde who was rushed to Philippine General Hospital after the game.“We always pray for the safety of everyone, the safety of the team, and the recovery of Isa and of course the safety of all UAAP players.”ADVERTISEMENT Private companies step in to help SEA Games hosting Sports Related Videospowered by AdSparcRead Next MANILA, Philippines—Oliver Almadro is popularly known as Ateneo’s head coach who is trying to bring the success of the men’s program to the women’s team that’s searching for its first championship since 2015.ADVERTISEMENT Trump tells impeachment jokes at annual turkey pardon event Panelo: Duterte ‘angry’ with SEA Games hosting hassles LATEST STORIES Colombia protesters vow new strike after talks hit snag Xiong Jin Nan delivers Angela Lee’s 1st loss, retains ONE women’s strawweight strap Google Philippines names new country directorcenter_img Wintry storm delivers US travel woes before Thanksgiving MOST READ Bloomberg: US would benefit from more, not fewer, immigrants PH underwater hockey team aims to make waves in SEA Games PLAY LIST 02:42PH underwater hockey team aims to make waves in SEA Games01:44Philippines marks anniversary of massacre with calls for justice01:19Fire erupts in Barangay Tatalon in Quezon City01:07Trump talks impeachment while meeting NCAA athletes02:49World-class track facilities installed at NCC for SEA Games02:11Trump awards medals to Jon Voight, Alison Krauss Cayetano: Senate, Drilon to be blamed for SEA Games mess Constantly barking orders from the sidelines, it might look like Almadro is all business but that is now always the case.Almadro, who has three children, showed his fatherly side when University of the Philippines star Isa Molde injured her left ankle on Saturday while playing against his Lady Eagles in UAAP Season 81 women’s volleyball tournament.FEATURED STORIESSPORTSPrivate companies step in to help SEA Games hostingSPORTSPalace wants Cayetano’s PHISGOC Foundation probed over corruption chargesSPORTSSingapore latest to raise issue on SEA Games food, logisticsREAD: Lady Maroons’ top hitter Isa Molde injures kneeAs Molde laid down on the mat early in the second set, Almadro was one of the first people to rush to her aid and the Ateneo mentor said it was just his paternal instinct that kicked in when he cared for the Lady Maroon. Don’t miss out on the latest news and information. View commentslast_img read more

10 months agoBrighton midfielder Solly March on Chelsea defeat: We had nothing to lose

first_imgBrighton midfielder Solly March on Chelsea defeat: We had nothing to loseby Paul Vegas10 months agoSend to a friendShare the loveBrighton midfielder Solly March from positives from defeat at home to Chelsea.March pulled a goal back for the Seagulls after first-half strikes from Pedro and Eden Hazard, and Hughton decided to focus on his team’s second-half reaction, as they created chances to equalise against the Blues.March said, “We had nothing to lose. We wanted to get at them and show them that we were better in the second half.“We did that after the break and we won the half. But at the end of the day it wasn’t good enough, so we’re a bit disappointed.“I think we looked okay at times, but perhaps we tried forcing it too much with our final ball and when we got into the final third.“We will work on that for the next game and hopefully we will improve.” About the authorPaul VegasShare the loveHave your saylast_img read more

10 months agoEverton boss Silva to release Holgate for loan

first_imgEverton boss Silva to release Holgate for loanby Paul Vegas10 months agoSend to a friendShare the loveEverton boss Marco Silva is ready to release Mason Holgate for loan.The Mirror says Everton are considering letting Holgate leave on loan in January.The 22-year-old is down the Goodison Park pecking order under new manager Marco Silva.Everton favour a six month move over a full-time switch unless a big offer comes their way.Fulham, Derby County and Sheffield United are all considering their positions. TagsTransfersAbout the authorPaul VegasShare the loveHave your saylast_img