27. July 2013 · Comments Off on North West · Categories: News · Tags:

On the other hand, most respondents believe that is unlikely or practically impossible: the uncontrolled growth of world population (76%), collisions with large celestial bodies (69%), global cooling (67%), the world's population extinction because of declining birth rates (63%), as well as the exhaustion of fresh water (53%, although a lot and those who think this is a very real threat – 40%). About Global Warming aware 93% of respondents, including one-third of respondents (34%) say they know a lot about this, and 59% have heard something. Nothing is known about the problem of only 5% of the respondents. Traditionally, the most informed respondents with higher and incomplete higher education, this group of global warming know a lot of 41%, whereas in the group with less than average – 22%. Nearly half of respondents, 45% believe that global warming is already started. Another 17% expect to start soon.

According to 21%, global warming will come a very long time. Only 6% say it is not at all. The view that global warming has already begun, most prevalent in the South and Far Eastern federal districts (58-60%), the least – in the North West and the Siberian (31% and 35%). Global warming – probably the result of human activities than natural phenomenon, when the periods of warming and cooling follow each other – say 59% to 30%. According to forecasts of 45%, global warming will lead to catastrophic consequences for mankind. Another 29% expect a small deterioration in the climate. Optimists, 10% of them believe that in some regions of the Earth's climate will improve.

21. July 2013 · Comments Off on Slate Rock · Categories: News

Name of rock, mineral or stone slate type basic sedimentary rock; fossil rock group silicates: micaceous schist Crystal system / structure presents a foliated structure chemical composition by virtue of that slate contains quartz, micas, clay minerals and feldspars, the chemical composition of it depends on the quantity of ore that abound in the rock. It consists of mud and barrage. Another source of information we find that the minerals that form slate are mainly quartz and Muscovite. Training or origin comes from the transformation of the sedimentary rocks subjected to strong pressures that come from Teutonic pressures (e.g., the formation of mountains). External of the halos of contact forms in the area and they often Shales towards corneal. Slate is formed when the clay minerals constituting fine-grained rocks, as the pelita is transformed into mica or chlorite. By joining the core group of sedimentary rocks, slate is formed in any place that has sand, sludge deposits and sediments; These unite and form rocks comprising various modes and types of rocks, among them is the slate. Also called fossil rock.

Hardness hard texture shaley and fine grains. Compact and does not undergo appreciable weathering. Indensa density, with fine grains formed by metamorphism of micaceous shale, clay or, less frequently, of igneous rocks medium to dark gray Color, green color of the feces of wine, purple, Brown and black. Brightness brightness is opaque. Satin properties contains particles of quartz and Muscovite, forming a type of mica; biotite, chlorite and the Hematite. They have internal foliation, its tabular geometry is limited by two flat sides. The predominant color in Slate, shows the dominant mineral, as well as the oxidation process that was exposed. He suffers no weathering, widespread resistance, durability, versatility and impermeability. It is waterproof, its main feature is its division into fine foil or layers. Uses a few decades ago, slate was an element important in the classroom and in school children portfolios.