U–Pb ion-microprobe zircon geochronology from the basement inliers of eastern Graham Land, Antarctic Peninsula

first_imgNew geological mapping combined with U–Pb ion microprobe zircon geochronology on the isolated but locally extensive exposures of crystalline basement inliers of eastern Graham Land has greatly improved our understanding of the region’s early crustal evolution and has allowed a more thorough evaluation of Patagonia–Antarctic Peninsula connections prior to Gondwana break-up. At Eden Glacier, diorite gneisses yield Early Ordovician protolith ages of 487 ± 3 and 485 ± 3 Ma and represent the oldest in situ rocks recorded on the Antarctic Peninsula, and indicate a significant spatial extension of Famatinian-age magmatism of Patagonia. Zircon overgrowths in the Early Ordovician protoliths and granitic leucosomes developed within them record two phases of Permian metamorphism at c. 275 and c. 257 Ma, coincident in part with diorite plutonism of the area at 272 ± 2 Ma. At Adie Inlet, granitic leucosomes from paragneiss have been dated at 276 ± 3 Ma, and these are in turn cut by 257 ± 3 Ma xenolith-rich diorite gneiss. The diorite intruded during a second phase of deformation, which folded the paragneiss leucosomes into tight folds. This whole assembly is cut by intensely brecciated megacrystic granodiorite, which yielded a 259 ± 3 Ma age. South of Cabinet Inlet a very different sequence of events is evident, with Triassic magmatism at c. 236 Ma extensive along the Joerg Peninsula. Migmatitic leucosomes are dated at c. 224 Ma and magmatism and deformation events apparently continued to c. 209 Ma at Cape Casey. Our data indicate that the Devonian and Carboniferous magmatism at Target Hill, considered to represent the ‘classic’ basement complex of the Antarctic Peninsula, is not representative regionally. The Target Hill crustal block contains a major break along Cabinet Inlet; to the north, Ordovician and Permian protoliths were variably migmatized during two episodes of Permian deformation and metamorphism, whereas to the south, Triassic protoliths and Triassic metamorphism are encountered.last_img read more

STS9 Announces 4-Night 2018 New Year’s Run

first_imgThis summer also marked the inaugural edition of STS9’s Wave Spell Live festival in Belden Town, CA. You can watch full video of STS9’s improv set with Richard Devine here.For more information regarding tickets to STS9’s 2018 New Year’s run, head here. Today, jamtronica favorites STS9 have announced their 2018 New Year’s run, set to take place over the course of four nights in Denver. On Friday, December 28th and Saturday, December 29th, the band will head to The Fillmore for a pair of performances. Then, on Sunday, December 30th, the band will have a change of scenery as they move to Denver’s 1,100-capacity Summit Music Hall (less than one-third the size of the Fillmore) for an intimate evening. Finally, STS9 will return to The Fillmore on Monday, December 31st to ring in 2019 with one final blowout.Limited four-night passes will be available for pre-sale beginning this Wednesday, September 19th. The public on-sale period begins on Friday, September 21st. The four-night passes, which include tickets to all three Fillmore shows as well as a ticket to the smaller Summit performance, will be available at a discounted price. Single-night tickets for the Fillmore shows will also become available when public on-sale begins on Friday. Any remaining standalone tickets for the Summit show will go on sale at a later date.The announcement of STS9’s Denver New Year’s celebration comes on the heels of a successful two-night run at Red Rocks earlier this month, where they constructed their incredible “Cave of Crystals” stage set. You can watch a clip of the magic below:last_img read more

Resources in the aftermath of tragedy

first_imgThe latest update on services offered or events being held to help the Harvard community cope with the April 15 tragedy during the Boston Marathon.Concert for BostonAt 3 p.m. on April 28, the Dudley House Orchestra and Chorus present “Concert for Boston,” a charity event to benefit those most affected by the tragic events that occurred during the Boston Marathon and its aftermath. Proceeds will go to One Fund Boston.Crimson vs. Dartmouth Raffle and T-Shirt SaleThe Harvard softball team will be selling T-shirts and hosting a raffle during Sunday’s (April 28) 2 p.m. doubleheader against Dartmouth. The raffle and T-shirt sale is to raise money for charities and foundations that are supporting victims of the Boston Marathon attack. Raffle tickets are $10 and T-shirts are $20. Tickets will be sold through the first game of the doubleheader and the drawing will take place during the second game. Fans do not need to be present in order to win the prizes. Raffle items include: autographed pictures by the Patriots’ Vince Wilfork, autographed baseballs from Dustin Pedroia and Clay Buchholz, Red Sox tickets, Harvard athletic apparel, tennis lessons, and more. For more information.Harvard Runs for Boston FundraiserOn May 1, reserve a treadmill at the Hemenway Gynasium for a 26-minute run or walk, with a suggested donation of $1 per minute. Donations of any size will be accepted. All proceeds will go to One Fund Boston. 10 a.m.-5 p.m.One Fund BostonFor the many members of the Harvard community seeking to help the victims in the marathon tragedy and their families, consider donating to the fund established by Gov. Deval Patrick and Boston Mayor Thomas M. Menino.Harvard’s Employee Assistant Program offers aidAs a result of the bomb blasts at the Boston Marathon, many employees or their family and household members may be directly or indirectly affected. Harvard’s Employee Assistance Program is available for free, confidential assistance and consultation 24/7. The Wellness Corporation’s EAP therapists are equipped to handle any distress that people are experiencing even if it is unrelated to this event.last_img read more

Facebook’s Zuckerberg embraces remote work beyond Silicon Valley

first_imgTopics : “These aren’t necessarily offices,” Zuckerberg said, although the company would likely create “some kind of physical space” to foster community. “The idea for these hubs is that we want to create scale. We want to focus the recruiting energy in some cities where we can get to hundreds of engineers.”The total effect on costs of the shift to remote work is unclear, Zuckerberg said. Savings related to real estate, food and labor costs will be partially offset by additional expenses for travel and logistics associated with home offices.He said the company was committed to keeping its current office spaces, which include a tony Menlo Park headquarters designed by architect Frank Gehry, featuring a rooftop garden and a courtyard sheltered by redwood trees.The sky-high compensation packages common in Silicon Valley will not necessarily be transferred to other parts of the country, however. Zuckerberg said salaries will be adjusted if Facebook employees opt to live in less-pricey regions, consistent with the company’s existing cost-of-living calculations.“We pay very well, basically at the top of the market, but we pay a market rate. And that varies by location, so we’re going to continue that principle here,” he said.Internal surveys indicate that about 60 percent of Facebook employees preferred a flexible approach to work, with a mix of remote and office-based functions, Zuckerberg said.Within that group, he said, just under half reported they would move to another region if given the option.He said there were no differences in the results by gender. Facebook Inc will permanently embrace remote work even after coronavirus lockdowns ease, Chief Executive Mark Zuckerberg said on Thursday, accelerating the tech sector’s geographic diversification away from its home in Silicon Valley.Zuckerberg said the world’s largest social network would start “aggressively opening up remote hiring” in July, expecting that about half its workforce would eventually do their jobs outside Facebook’s offices over the next five to 10 years.The company would take a more “measured approach” with existing employees based on job function and past performance, he said, and set a January 1, 2021 deadline for staff to update the company on their new locations for tax purposes.center_img The move is the most significant yet by a tech giant to reimagine what work culture will look like in a post-coronavirus world, as the pandemic upends office and commuting habits for companies around the world.It follows similar announcements earlier this month by social media rival Twitter and payments company Square, both led by Jack Dorsey, which were the first tech companies to permit remote work indefinitely.But Facebook is a much larger company, with nearly 50,000 employees, and it went further in laying out a novel proposed structure for remote work. Its decision is likely to have a pronounced impact on the San Francisco area, where the tech sector’s rapid growth has strained regional infrastructure.Facebook, which has already said it will stick to plans to hire 10,000 engineers and product employees this year, will also build three new “hubs” in Atlanta, Dallas and Denver where remote workers in those areas could occasionally convene.last_img read more

MainSource offers ‘Teach Children to Save” program to local schools

first_imgGreensburg, Ind. — Greensburg-based MainSource Bank is participating in the American Bankers Association “Teach Children to Save” campaign.Volunteers from MainSource Bank have stops planned at schools in Brookville, Aurora, Vevay and Switzerland County to help young people develop good savings habits. The program is expected to impact more than 500 students this year.School administrators are encouraged to contact their local MainSource Bank branch to schedule a presentation for their students.For more information go online to mainsourcebank.com/.last_img

Giroud agrees personal terms with Inter

first_imgRelatedPosts Italy introduces compulsory virus testing for travellers from France Vidal lands in Milan to complete move from Barca to Inter Mane double eases Liverpool to win over 10-man Chelsea Chelsea forward Olivier Giroud reportedly intends to sign for Inter Milan during the next transfer window. Despite having less than three months left on his contract at Stamford Bridge, it was suggested that Giroud could remain with the Blues having impressed before the coronavirus pandemic. However, according to Tuttosport, the 33-year-old has been able to agree personal terms with Inter. The report claimed that the Serie A title challengers are willing to offer the World Cup winner a two-year contract, terms which have not always been on the table at Chelsea. Giroud has contributed two goals from just 11 outings in the Premier League and Champions League this season.Tags: ChelseaFranceInter MilanOlivier GiroudSerie Alast_img read more