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  • Geology.com News – 11 Topics

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    Tuscaloosa Marine Shale

    Posted: 22 Apr 2014 12:36 PM PDT

    There could be as much as 7 to 9 billion barrels of oil in the Tuscaloosa Marine Shale of central and southern Louisiana and southwest Mississippi.

    Goodrich Petroleum now has two successful wells in the rock unit, the second well is currently producing over 1000 barrels of oil equivalent per day.

    Grand Canyon from Space

    Posted: 22 Apr 2014 12:29 PM PDT

    “The Grand Canyon in northern Arizona is a favorite for astronauts shooting photos from the International Space Station, as well as one of the best-known tourist attractions in the world. The steep walls of the Colorado River canyon and its many side canyons make an intricate landscape that contrasts with the dark green, forested plateau to the north and south.” Quoted from the NASA image release.


    Image by NASA Astronaut Photography

    Solar and Micro-Hydro at Skidmore

    Posted: 22 Apr 2014 08:46 AM PDT

    “Skidmore College could generate 30 percent of its annual electricity through a solar farm and a micro-hydro project.”

    Diamonds Do Not Form From Coal

    Posted: 22 Apr 2014 05:44 AM PDT

    How diamonds form is one of the most common geological misconceptions. Diamonds form under a variety of conditions that rarely, if ever, involve coal as a source of carbon. In fact, most diamonds formed long before the first coal swamp or land plant!

    Pooling Oil and Gas Royalties in West Virginia

    Posted: 22 Apr 2014 05:29 AM PDT

    A bill to allow pooling around oil and gas wells is expected to resurface in the West Virginia Legislature.

    “Pooling allows the majority of landowners to benefit from gas royalties while still protecting minority interests. Pooling also protects surface owners, communities and the environment by reducing the number of wells needed to recover gas deposits.” Quote from Steve Roberts, West Virginia Chamber of Commerce.

    Natural Gas Boom Misconceptions

    Posted: 22 Apr 2014 05:06 AM PDT

    USA Today has a brief article that presents three misconceptions about the natural gas boom that has occurred in several parts of the United States.

    National Land Cover Database

    Posted: 22 Apr 2014 05:02 AM PDT

    USGS has released the latest edition of the The National Land Cover Database.

    The nation’s most comprehensive look at land-surface conditions from coast to coast shows the extent of land cover types from forests to urban areas.

    Drilling the Mancos Shale in New Mexico

    Posted: 22 Apr 2014 04:59 AM PDT

    Encana Corporation has plans to drill up to 50 wells in the Mancos Shale in New Mexico.

    Challenges of the Monterey Shale

    Posted: 22 Apr 2014 04:51 AM PDT

    Although the Monterey Shale contains vast amounts of oil the cost of leasing is very high, much of the oil is very deep and a new approach at fracking might be needed to liberate the oil.

    House Torn in Half by Landslide

    Posted: 22 Apr 2014 04:50 AM PDT

    A house straddling the scarp of a small landslide near Jackson, Wyoming was torn apart as the slide moved. Photos.

    Roadside Geology Guides

    Posted: 22 Apr 2014 04:25 AM PDT

    Since 1972 the “Roadside Geology” series has provided introductory information on the geology of states and small regions of the United States.

    The books provide a combination of maps, travel logs, photos and commentary for the geology that can be seen along highways or visited at parks and public viewing areas. They are popular with geologists, teachers, students and others who are interested in the Earth.

  • The New Abolitionism

    The New Abolitionism

    Averting planetary disaster will mean forcing fossil fuel companies to give up at least $10 trillion in wealth.

    April 22, 2014

    Before the cannons fired at Fort Sumter, the Confederates announced their rebellion with lofty rhetoric about “violations of the Constitution of the United States” and “encroachments upon the reserved rights of the States.” But the brute, bloody fact beneath those words was money. So much goddamn money.

    The leaders of slave power were fighting a movement of dispossession. The abolitionists told them that the property they owned must be forfeited, that all the wealth stored in the limbs and wombs of their property would be taken from them. Zeroed out. Imagine a modern-day political movement that contended that mutual funds and 401(k)s, stocks and college savings accounts were evil institutions that must be eliminated completely, more or less overnight. This was the fear that approximately 400,000 Southern slaveholders faced on the eve of the Civil War.

    Today, we rightly recoil at the thought of tabulating slaves as property. It was precisely this ontological question—property or persons?—that the war was fought over. But suspend that moral revulsion for a moment and look at the numbers: Just how much money were the South’s slaves worth then? A commonly cited figure is $75 billion, which comes from multiplying the average sale price of slaves in 1860 by the number of slaves and then using the Consumer Price Index to adjust for inflation. But as economists Samuel H. Williamson and Louis P. Cain argue, using CPI-adjusted prices over such a long period doesn’t really tell us much: “In the 19th century,” they note, “there were no national surveys to figure out what the average consumer bought.” In fact, the first such survey, in Massachusetts, wasn’t conducted until 1875.

    In order to get a true sense of how much wealth the South held in bondage, it makes far more sense to look at slavery in terms of the percentage of total economic value it represented at the time. And by that metric, it was colossal. In 1860, slaves represented about 16 percent of the total household assets—that is, all the wealth—in the entire country, which in today’s terms is a stunning $10 trillion.

    Ten trillion dollars is already a number much too large to comprehend, but remember that wealth was intensely geographically focused. According to calculations made by economic historian Gavin Wright, slaves represented nearly half the total wealth of the South on the eve of secession. “In 1860, slaves as property were worth more than all the banks, factories and railroads in the country put together,” civil war historian Eric Foner tells me. “Think what would happen if you liquidated the banks, factories and railroads with no compensation.”

    * * *

    In 2012, the writer and activist Bill McKibben published a heart-stopping essay in Rolling Stone titled “Global Warming’s Terrifying New Math.” I’ve read hundreds of thousands of words about climate change over the last decade, but that essay haunts me the most.

    The piece walks through a fairly straightforward bit of arithmetic that goes as follows. The scientific consensus is that human civilization cannot survive in any recognizable form a temperature increase this century more than 2 degrees Celsius (3.6 degrees Fahrenheit). Given that we’ve already warmed the earth about 0.8 degrees Celsius, that means we have 1.2 degrees left—and some of that warming is already in motion. Given the relationship between carbon emissions and global average temperatures, that means we can release about 565 gigatons of carbon into the atmosphere by mid-century. Total. That’s all we get to emit if we hope to keep inhabiting the planet in a manner that resembles current conditions.

    Now here’s the terrifying part. The Carbon Tracker Initiative, a consortium of financial analysts and environmentalists, set out to tally the amount of carbon contained in the proven fossil fuel reserves of the world’s energy companies and major fossil fuel–producing countries. That is, the total amount of carbon we know is in the ground that we can, with present technology, extract, burn and put into the atmosphere. The number that the Carbon Tracker Initiative came up with is… 2,795 gigatons. Which means the total amount of known, proven extractable fossil fuel in the ground at this very moment is almost five times the amount we can safely burn.

    Proceeding from this fact, McKibben leads us inexorably to the staggering conclusion that the work of the climate movement is to find a way to force the powers that be, from the government of Saudi Arabia to the board and shareholders of ExxonMobil, to leave 80 percent of the carbon they have claims on in the ground. That stuff you own, that property you’re counting on and pricing into your stocks? You can’t have it.

    Given the fluctuations of fuel prices, it’s a bit tricky to put an exact price tag on how much money all that unexcavated carbon would be worth, but one financial analyst puts the price at somewhere in the ballpark of $20 trillion. So in order to preserve a roughly habitable planet, we somehow need to convince or coerce the world’s most profitable corporations and the nations that partner with them to walk away from $20 trillion of wealth. Since all of these numbers are fairly complex estimates, let’s just say, for the sake of argument, that we’ve overestimated the total amount of carbon and attendant cost by a factor of 2. Let’s say that it’s just $10 trillion.

    The last time in American history that some powerful set of interests relinquished its claim on $10 trillion of wealth was in 1865—and then only after four years and more than 600,000 lives lost in the bloodiest, most horrific war we’ve ever fought.

    It is almost always foolish to compare a modern political issue to slavery, because there’s nothing in American history that is slavery’s proper analogue. So before anyone misunderstands my point, let me be clear and state the obvious: there is absolutely no conceivable moral comparison between the enslavement of Africans and African-Americans and the burning of carbon to power our devices. Humans are humans; molecules are molecules. The comparison I’m making is a comparison between the political economy of slavery and the political economy of fossil fuel.

    More acutely, when you consider the math that McKibben, the Carbon Tracker Initiative and the Intergovernmental Panel on Climate Change (IPCC) all lay out, you must confront the fact that the climate justice movement is demanding that an existing set of political and economic interests be forced to say goodbye to trillions of dollars of wealth. It is impossible to point to any precedent other than abolition.

    * * *

    Apr

  • Sea level rise threatens mid north coast homes

    Home  »  Uncategorized   »   Sea level rise threatens mid north coast homes

    Sea level rise threatens mid north coast homes

    Posted in Uncategorized By Neville On April 22, 2014

    Updated Tue 15 May 2012, 8:49am AEST

    Thousands of mid north coast homes, worth billions of dollars will be threatened by future sea level rises and storm surges.

    That is the finding of the new Climate Commission report.

    The Critical Decade report says sea level rise is occurring at close to the worst case scenario, with the biggest rises happening on the southern coast.

    Rises on the northern coast have been around or just below the global average.

    The report concludes that a rise of between half a metre and one metre from 1990 levels is likely to happen by 2100, but more is possible.

    A slightly bigger rise, of 1.1 metres, will put at risk around 4000 homes in the Great Lakes, about 1300 homes in the Greater Taree area, including at Old Bar, 1000 in the Clarence and about 800 in the Port Macquarie Hastings area.

    The report also predicts a big increase in cane toads from the northern rivers to the mid north coast.

    Serious erosion problems faced by beachfront property owners at Lake Cathie, near Port Macquarie have also been highlighted in the Climate Commission report.

    The Critical Decade report highlights Lake Cathie, saying coastal erosion has been occurring at an average rate of 2 centimetres a year since 1940.

    It says the impacts of this are likely to be exacerbated by rising sea levels.

    It says by 2050 up to 16 houses could be in the erosion zone, and even more houses and roads could be destabilised.

    The report suggests sea level rise is occurring at close to the worst case scenario.

    It says a rise of 1.1 metres by 2100 will directly threaten more than 7000 homes between the Great Lakes and the Clarence.

    Topics: erosion, climate-change, lake-cathie-2445, port-macquarie-2444, coffs-harbour-2450, grafton-2460

  • Taking the pulse of mountain formation in the Andes

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    Taking the pulse of mountain formation in the Andes

    Date:
    April 21, 2014
    Source:
    University of Rochester
    Summary:
    New research shows that the Altiplano plateau in the central Andes — and most likely the entire mountain range — was formed through a series of rapid growth spurts. “This study provides increasing evidence that the plateau formed through periodic rapid pulses, not through a continuous, gradual uplift of the surface, as was traditionally thought,” said one researcher. “In geologic terms, rapid means rising one kilometer or more over several millions of years, which is very impressive.”

    Sedimentary deposits near Cerdas in the Altiplano plateau of Bolivia are shown. These rocks contain ancient soils used to decipher the surface temperature and surface uplift history of the southern Altiplano.
    Credit: Carmala Garzione/University of Rochester

    Scientists have long been trying to understand how the Andes and other broad, high-elevation mountain ranges were formed. New research by Carmala Garzione, a professor of earth and environmental sciences at the University of Rochester, and colleagues sheds light on the mystery.

    In a paper published in the latest Earth and Planetary Science Letters, Garzione explains that the Altiplano plateau in the central Andes — and most likely the entire mountain range — was formed through a series of rapid growth spurts.

    “This study provides increasing evidence that the plateau formed through periodic rapid pulses, not through a continuous, gradual uplift of the surface, as was traditionally thought,” said Garzione. “In geologic terms, rapid means rising one kilometer or more over several millions of years, which is very impressive.”

    It’s been understood that the Andes mountain range has been growing as the Nazca oceanic plate slips underneath the South American continental plate, causing Earth’s crust to shorten (by folding and faulting) and thicken. But that left two questions: How quickly have the Andes risen to their current height, and what was the actual process that enabled their rise?

    Several years ago (2006-2008), Garzione and several colleagues provided the first estimates of the timing and rates of the surface uplift of the central Andes (“Mountain Ranges Rise Much More Rapidly than Geologists Expected”) by measuring the ancient surface temperatures and rainfall compositions preserved in the soils of the central Altiplano, a plateau in Bolivia and Peru that sits about 12,000 feet above sea level. Garzione concluded that portions of the dense lower crust and upper mantle that act like an anchor on the base of the crust are periodically detached and sink through the mantle as the thickened continental plate heats up. Detachment of this dense anchor allows Earth’s low density upper crust to rebound and rise rapidly.

    More recently, Garzione and Andrew Leier, an assistant professor of Earth and Ocean Sciences at the University of South Carolina, used a relatively new temperature-recording technique in two separate studies in different regions of the Andes to determine whether pulses of rapid surface uplift are the norm, or the exception, for the formation of mountain ranges like the Andes.

    Garzione and Leier (“Stable isotope evidence for multiple pulses of rapid surface uplift in the Central Andes, Bolivia”) both focused on the bonding behavior of carbon and oxygen isotopes in the mineral calcite that precipitated from rainwater; their results were similar.

    Garzione worked in the southern Altiplano, collecting climate records preserved in ancient soils at both low elevations (close to sea level), where temperatures remained warm over the history of the Andes, and at high elevations where temperatures should have cooled as the mountains rose. The calcite found in the soil contains both the lighter isotopes of carbon and oxygen — 12C and 16O — as well as the rare heavier isotopes — 13C and 18O. Paleo-temperature estimates from calcite rely on the fact that heavy isotopes form stronger bonds. At lower temperatures, where atoms vibrate more slowly, the heavy isotope 13C-18O bonds would be more difficult to break, resulting in a higher concentration of 13C-18O bonds in calcite, compared to what is found at warmer temperatures. By measuring the abundance of heavy isotope bonds in both low elevation (warm) sites and high elevation (cooler) sites over time, Garzione used the temperature difference between the sites to estimate the elevation of various layers of ancient soils at specific points in time.

    She found that the southern Altiplano region rose by about 2.5 kilometers between 16 million and 9 million years ago, which is considered a rapid rate in geologic terms. Garzione speculates that the pulsing action relates to a dense root that grows at the boundary of the lower crust and upper mantle. As the oceanic plate slips under the continental plate, the continental plate shortens and thickens, increasing the pressure on the lower crust. The basaltic composition of the lower crust converts to a very high-density rock called eclogite, which serves as an anchor to the low-density upper crust. As this root is forced deeper into the hotter part of the mantle, it heats to a temperature where it can be rapidly removed (over several million years), resulting in the rapid rise of the mountain range.

    “What we are learning is that the Altiplano plateau formed by pulses of rapid surface uplift over several million years, separated by long periods (several tens of million years) of stable elevations,” said Garzione. “We suspect this process is typical of other high-elevation ranges, but more research is needed before we know for certain.”


    Story Source:

    The above story is based on materials provided by University of Rochester. The original article was written by Peter Iglinski. Note: Materials may be edited for content and length.


    Journal Reference:

    1. Carmala N. Garzione, David J. Auerbach, Johanna Jin-Sook Smith, Jose J. Rosario, Benjamin H. Passey, Teresa E. Jordan, John M. Eiler. Clumped isotope evidence for diachronous surface cooling of the Altiplano and pulsed surface uplift of the Central Andes. Earth and Planetary Science Letters, 2014; 393: 173 DOI: 10.1016/j.epsl.2014.02.029

    Cite This Page:

    University of Rochester. “Taking the pulse of mountain formation in the Andes.” ScienceDaily. ScienceDaily, 21 April 2014. <www.sciencedaily.com/releases/2014/04/140421135926.htm>.

  • Study: Linking Storms To Climate Change A ‘Distraction’

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    News

    Study: Linking Storms To Climate Change A ‘Distraction’

    22.03.2014

    22.03.2014 07:26 Age: 32 days

    Leading atmospheric science researchers have pointed out in a new paper that extreme weather events will continue irrespective of climate change and that trying to link such events to global warming distracts attention from efforts to increase resilience.

    Click to enlarge. Violent storms will continue irrespective of climate change say University of Manchester researchers. Courtesy: University of Manchester.

     

    Connecting extreme to climate change distracts from the need to protect society from high-impact weather events which will continue to happen irrespective of human-induced climate change, say experts.

    Writing in the journal Weather, Climate and Society, the University of Manchester researchers argue that cutting greenhouse gas emissions, while crucial to reducing humanity’s longer-term impact on the planet, will not eliminate violent storms, tornadoes or flooding and the damage they cause.

    The authors suggest that developing greater resilience to extreme weather events must be given greater priority if the socioeconomic impact of storms, like those that have ravaged Britain this winter, is to be reduced.

    Professor David Schultz, one of the authors of the guest editorial, said: “One of the long-term effects of climate change is often predicted to be an increase in the intensity and frequency of many high-impact weather events, so reducing greenhouse gas emissions is often seen to be the response to the problem.

    “Reducing humanity’s impact on our planet should be pursued as a matter of urgency, but more emphasis must also be placed on being resilient to individual weather events, as this year’s storms in Britain have so devastatingly shown.”

    Timescales

    In the past, say the authors, society responded to weather disasters with calls for greater resilience, but public awareness of manmade climate change has given climate timescales (decades and centuries) far greater importance than weather timescales (days and years).

    Schultz, a professor of synoptic meteorology, and co-author Dr Vladimir Janković, a science historian specialising in weather and climate, say the short-term, large variability from year to year in high-impact weather makes it difficult, if not impossible, to draw conclusions about the correlation to longer-term climate change.

    They argue that while large public investments in dams and flood defences, for example, must account for the possibilities of how weather might change in the future, this should not prevent short-term thinking to address more immediate vulnerability to inevitable high-impact weather events.

    “Avoiding construction in floodplains, implementing strong building codes, and increasing preparedness can make society more resilient to extreme weather events,” said Dr Janković. “But compounding the problem is that finding money for recovery is easier than spending on prevention, even if the costs of recovery are much higher.”

    This bias, say the authors, has a tendency to diminish the political dedication for preventative measures against extreme weather, regardless of whether they are caused or intensified by manmade influences. Yet, steps taken to protect society from the weather can protect the planet as well, they argue.

    Improved forecasting

    Dr Janković, based in the Centre for the History of Science, Technology and Medicine, said: “Improving forecasting, increasing preparedness or building better infrastructure can increase resilience and reduce carbon-dioxide emissions. For example, greening neighbourhoods or painting roofs lighter colours will both reduce the urban heat-island effect and reduce carbon-dioxide emissions through reduced air-conditioning costs, while making cities more resistant to storm damage would reduce emissions generated from rebuilding devastated areas.”

    Professor Schultz, from the School of Earth, Atmospheric and Environmental Sciences, added: “Linking high-impact weather events with climate change can be distracting; perpetuating the idea that reducing greenhouse gases would be enough to reduce increasingly vulnerable world populations, in our view, only confuses the public and policy-makers as to the socio-economic susceptibility to extreme weather.

    “With or without mitigation, there is no quick-fix, single-cause solution for the problem of human vulnerability to socio-environmental change, nor is there a reasonable prospect of attenuating high-impact weather. Addressing such issues would give the world an opportunity to develop a two-pronged policy in climate security, reducing longer-term climate risks in conjunction with preventing shorter-term weather disasters.”

    Abstract

    High-impact weather events are often accompanied in scientific, media, and policy circles by discussion of whether the events were associated with or enhanced by anthropogenic climate change. Although such discussion may be interesting scientifically, weather events will happen whether or not climate change is occurring—reducing carbon dioxide emissions will not eliminate the damage from tornadoes. Society, however, can choose to respond in a way to both reduce anthropogenic climate change and develop resilience to individual weather events.

    One of the long-term effects of climate change is predicted to be an increase in the intensity and frequency of many high-impact weather events. Thus, reducing greenhouse gas emissions is usually seen to be the response to the problem. Indeed, reducing humanity’s impact on our planet should be pursued as a matter of highest priority. Yet, fixing the planet often receives more emphasis than being resilient to individual weather events. Three points suggest that such emphasis on climate change is misdirected.

    Citation

    Climate Change and Resilience to Weather Events by David M. Schultz, Vladimir Janković published inWeather, Climate, and Society 2014 ; doi: dx.doi.org/10.1175/WCAS-D-14-00005.1

    Get the paper here.

    Source

    University of Manchester news release here.


  • Daily update: Rooftop Solar: Does it really need the grid?

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    Daily update: Rooftop Solar: Does it really need the grid?

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    Does rooftop solar really need the grid? Wind and solar generation half the cost of nuclear, Abbott’s business guru insists the world is cooling, Mixed greens, Reforms needed to stop free-riding of grid on back of solar PV, Energy-smart appliances cut Australian power bills by billions, Germany renewable energy policy designed to keep industries at home, 5 key ingredients for a sustainable home, and Oklahoma utilities hit homes using solar with extra fee.
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    RenewEconomy Daily News
    The Parkinson Report
    The plunging cost of rooftop solar, the anticipated fall in battery costs, and the potential ability to buy a home energy system from the local hardware store, is causing a split between those that believe the grid will follow in the footsteps of the Post Office, and those that insist we can’t do without it.
    German study concludes new-build wind and solar power generation cost 50% less than new-build nuclear. Coal barely rates a mention.
    Tony Abbott’s key business advisor Maurice Newman says world is cooling – which puts recent comments by George Brandis and Clive Palmer into context.
    Carnegie Wave capital raising oversubscribed; Kangaroo green bond market tipped to hit $1bn; Barrier Reef’s solar protector; Redflow improves batteries.
    Rooftop solar PV tariffs are unjust, and a cash cow for energy providers. It is time to rethink make-up of network tariffs.
    The value of energy saved in Australia last year alone was around A$3.2 billion. Of this, some A$2.7 billion was saved by households.
    Large industrial power users in renewable-focused Germany will pay 35% less for their electricity next year than those in nuclear powered France.
    If climate change features highly in your concept of sustainability then here are 5 essential ingredients for a sustainable home.
    Anyone living in Oklahoma who installs solar panels will soon be charged a fee for the right to do that while still being connected to the