GEOLOGICAL STRUCTURE . Unlike South America, millions of years ago was part of Gondwana, North America – a fragment of Laurasia – the Ancient continent of the Northern hemisphere. The basis of North America is a long Precambrian North American platform . In the North-East of its crystalline basement, composed of granite and gneiss, comes to the surface in the Canadian shield . In the rest of offset by a strong Foundation layer of sedimentary rocks (Sandstone, limestone).
From all sides of the platform in different geological time were “Built” folded area. In particular, strong folding formed on the approach to the site of the Pacific – North American lithospheric plates .
More than 10 thousand years ago the climate of the Northern hemisphere was much more severe: snow fell during the long winter, not had time to melt and accumulate. Gradually it turned into ice. As a consequence, on the North of the continent was formed by a giant glacier covering. Hundreds of years he moved to the South along the uneven surface of the continent. In ice versely large and small fragments of rocks Continue reading
Romanesque architecture is an architectural style in Western Europe of X—XIII centuries. Severe, serf nature of architecture — monasteries, churches, castles. Characteristic half from motives of architectural decoration — images of animals, plants, Dating back to folk art.
Gothic — an architectural style that emerged in the XII century in France in the late middle ages and spread throughout Western Europe. Characterized by the subordination of the architectural forms of vertical rhythm, with Lancet arches on the ribs (the ribs), the abundance of stone carvings and sculptural decorations. In the Gothic Cathedral, the pointed arch thrust is transmitted to the outer supporting pillars (buttresses) with arches (flying buttresses).
And romance . Gothic architecture developed in the same mainly socio-historical conditions. General were, in theory, and compositional techniques. The main difference between these styles was that the Romanesque was characterized by extreme massiveness of the buildings, and the Gothic design has become more perfect, light weight in a number of frame structures in nature .
From the reign of Charlemagne began to produce the so-called Romanesque style with its characteristic semi-circular vaulted arch. Therefore, the XI—XII centuries in the history of medieval culture called the Romanesque period . linking Continue reading
Having travelled in Karelia – a truly remarkable place – you want as soon as possible to describe to the readers websiteand its extraordinary beauty. Undoubtedly, none of the story can cover all the attractions, which are rich in Karelia . Pay attention to those that are just impossible to avoid.
In the world there are places that self-respecting traveller should visit at least once in life. And even if your enthusiasm for wandering and travel is limited to viewing the discovery channel, lying on your sofa, separate corners of our vast country, you just need to see it firsthand. Because even the most modern 3D home cinema does not begin to convey the true beauty of the Russian North.
So I offer you a small, but extremely exciting journey through one of the most legendary regions of Russia – Karelia. Honor the land brought not only its beauty and history, he is known for, among other things, as one of the most enigmatic and mysterious places on the planet.
Onega petroglyphs. The so-called ancient drawings sometimes still called the “stone age Bible”. They were discovered in the nineteenth century, a geologist from St. Petersburg K. Grevinga. Alleged age of the petroglyphs is 6 thousand years old. What narrate petroglyphs? Continue reading