A Lower Cretaceous clastic slope succession, Livingston Island, Antarctica: sand-body characteristics, depositional processes and implications for slope apron depositional models

first_imgThe early Cretaceous fill of the forearc/intra-arc Byers Basin includes a 600- to 900-m-thick interval of marine slope apron deposits, the President Beaches Formation. This is a predominantly argillaceous succession within which coarser-grained deposits are largely confined to lenticular packages of low width–thickness ratios. The entire formation was deposited in mid- to late-Berriasian times, coincident with a pulse of regional arc expansion, at minimum mean accumulation rates of 120–225 mm 1000 years–1. The mudstones are finely laminated, with a restricted benthic macrofauna and minimal bioturbation, indicating relatively inhospitable sea-floor environments. Sand-rich packages occur as 7- to 30-m-thick channel-fill units composed chiefly of classical medium-grained turbidites, in some cases associated with complex high-concentration turbidity current deposits and minor mud-rich debrites. These sand-bodies are apparently elongate along (normal to) the NW-facing palaeoslope implied by slump-fold axes (and the strike of the volcanic arc). Similarly, palaeocurrent indices show a consistent arc-parallel, NE-directed trend, suggesting that transport processes were strongly influenced by the structural ‘grain’ of the irregular slope morphology. Slope instability is recorded by widespread slump and soft-sediment collapse features promoted by a combination of steep sea-floor gradients and relatively high rates of sedimentation. A lack of systematic vertical facies trends indicates that this was not a progradational or well-organized system, despite high rates of sediment supply. However, the strong systematic relationship between palaeocurrents and palaeoslope suggests a promising basis for evaluating organization in otherwise poorly ordered slope apron depositional systems.last_img read more

3 questions with BloomCU’s Derik Krauss

first_imgCUInsight Publisher & CEO Lauren Culp is joined by Derik Krauss, Co-Founder of BloomCU for a quick interview with just 3 questions:(0:31) What is your company doing to support credit unions and their members during the COVID-19 crisis?(3:46) How do you think that COVID-19 might affect credit unions and the way that we do business in the long-term?(7:12) What tips do you have for staying sane during trying times?Click here to learn more about BloomCU! 2SHARESShareShareSharePrintMailGooglePinterestDiggRedditStumbleuponDeliciousBufferTumblr,Lauren Culp Lauren Culp is the Publisher & CEO at CUInsight.com.She leads the growing team at CUInsight, works with organizations serving credit unions to maximize their brand and exposure, connects … Web: https://www.cuinsight.com Detailslast_img read more

UK slave trader’s statue toppled in anti-racism protests

first_imgProtesters tore down the statue of a notorious British slave trader Sunday and dumped it in a harbor on the second day of demonstrations against George Floyd’s death.Footage showed a few dozen people tie a rope around the neck of Edward Colston’s statue and bring it to the ground in the southwestern city of Bristol.They stamped on it for a few minutes before carrying it and heaving it into the harbor with a great cheer. ‘Good’ Bristol mayor Marvin Rees struck a more conciliatory tone than the one adopted by Britain’s interior minister.”I know the removal of the Colston Statue will divide opinion, as the statue itself has done for many years,” the mayor said in a statement.”However, it’s important to listen to those who found the statue to represent an affront to humanity.”Colston grew up in a wealthy merchant family and joined a company in 1680 that had a monopoly on the west African slave trade.The Royal African Company (RAC) was formally headed by the brother of King Charles II who later took the throne as James II.The company branded the slaves — including women and children — with its RAC initials on their chests.It is believed to have sold around 100,000 west Africans in the Caribbean and the Americas between 1672 and 1689.Colston later developed a reputation as a philanthropist who donated to charitable causes such as schools and hospitals in Bristol and London.His 18-foot (5.5-meter) bronze statue stood on Bristol’s Colston Avenue since 1895. The city also has a school named in his honor.The Guardian newspaper said a local petition to remove the statue had gathered 11,000 signatures by the weekend.UK opposition Labor party lawmaker Clive Lewis welcomed its toppling by the crowd.”Good,” Lewis tweeted.”Someone responsible for immeasurable blood & suffering. We’ll never solve structural racism till we get to grips with our history in all its complexity. #BLM” Red paint was splashed on Colston’s face and a protestor put his knee to the statue’s neck to recall how Floyd — an unarmed African American — was asphyxiated by a white policeman in the US city of Minneapolis last month.”The man was a slave trader. He was good to Bristol but it was on the back of slavery and that is absolutely not on. It’s an insult to the people of Bristol,” 71-year-old protestor John McAllister told Britain’s Press Association.”Today I witness history,” another witness named William Want tweeted.”The statue of Edward Colston, a Bristol slave trader, was torn down, defaced, and thrown in the river. #BlackLivesMatter.” Topics : But interior minister Priti Patel called the toppling “utterly disgraceful”. The city’s police promised to carry out an investigation.”That speaks to the acts of public disorder that actually have now become a distraction from the cause which the people are actually protesting about,” Patel told Sky News.”That is a completely unacceptable act and speaks to the vandalism, again, as we saw yesterday in London.”The London police reported making 29 arrests during a day of largely peaceful protests Saturday that included a few scuffles with officers protecting the government district around Downing Street.Prime Minister Boris Johnson condemned the sporadic violence but did not directly address the toppling of the statue.”These demonstrations have been subverted by thuggery — and they are a betrayal of the cause they purport to serve,” Johnson said in a tweet.”Those responsible will be held to account.”last_img read more