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Izhora Plateau
The Izhora Plateau (russian: Ижорская возвышенность) is an elevated landform on Ordovician limestone bedrock in the southwestern part of Leningrad Oblast, between the Gulf of Finland in the north and the Luga River in the south. Its northern edge is formed by the erosional cliff known as the Baltic-Ladoga Klint. The highest part of the plateau is the Orekhovaya hill of Duderhof Heights at 176 m, situated in its extreme northeastern part. The plateau is mostly covered by agricultural lands. It used to be the heartland of the historical region known as Ingria Ingria is a historical region in what is now northwestern European Russia. It lies along the southeastern shore of the Gulf of Finland, bordered by Lake Ladoga on the Karelian Isthmus in the north and by the River Narva on the border with E .... Landforms of Leningrad Oblast Ingria Plateaus of Russia {{LeningradOblast-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ordovician
The Ordovician ( ) is a geologic period and system, the second of six periods of the Paleozoic Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period million years ago (Mya) to the start of the Silurian Period Mya. The Ordovician, named after the Welsh tribe of the Ordovices, was defined by Charles Lapworth in 1879 to resolve a dispute between followers of Adam Sedgwick and Roderick Murchison, who were placing the same rock beds in North Wales in the Cambrian and Silurian systems, respectively. Lapworth recognized that the fossil fauna in the disputed strata were different from those of either the Cambrian or the Silurian systems, and placed them in a system of their own. The Ordovician received international approval in 1960 (forty years after Lapworth's death), when it was adopted as an official period of the Paleozoic Era by the International Geological Congress. Life continued to flourish during the Ordovician as it did in the earlier C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone
Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms when these minerals precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly dolomite, a closely related rock, which contains a high percentage of the mineral dolomite, . ''Magnesian limestone'' is an obsolete and poorly-defined term used variously for dolomite, for lime ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leningrad Oblast
Leningrad Oblast ( rus, Ленинградская область, Leningradskaya oblast’, lʲɪnʲɪnˈgratskəjə ˈobləsʲtʲ, , ) is a federal subject of Russia (an oblast). It was established on 1 August 1927, although it was not until 1946 that the oblast's borders had been mostly settled in their present position. The oblast was named after the city of Leningrad. In 1991, the city restored its original name, Saint Petersburg, but the oblast retains the name of Leningrad. The capital and largest city is Gatchina. The oblast overlaps the historic region of Ingria and is bordered by Finland ( Kymenlaakso and South Karelia) in the northwest and Estonia (Ida-Viru County) in the west, as well as five federal subjects of Russia: the Republic of Karelia in the northeast, Vologda Oblast in the east, Novgorod Oblast in the south, Pskov Oblast in the southwest, and the federal city of Saint Petersburg in the west. The first governor of Leningrad Oblast was Vadim Gustov (in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gulf Of Finland
The Gulf of Finland ( fi, Suomenlahti; et, Soome laht; rus, Фи́нский зали́в, r=Finskiy zaliv, p=ˈfʲinskʲɪj zɐˈlʲif; sv, Finska viken) is the easternmost arm of the Baltic Sea. It extends between Finland to the north and Estonia to the south, to Saint Petersburg in Russia to the east, where the river Neva drains into it. Other major cities around the gulf include Helsinki and Tallinn. The eastern parts of the Gulf of Finland belong to Russia, and some of Russia's most important oil harbors are located farthest in, near Saint Petersburg (including Primorsk). As the seaway to Saint Petersburg, the Gulf of Finland has been and continues to be of considerable strategic importance to Russia. Some of the environmental problems affecting the Baltic Sea are at their most pronounced in the shallow gulf. Proposals for a tunnel through the gulf have been made. Geography The gulf has an area of . The length (from the Hanko Peninsula to Saint Petersburg) is and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Luga River
The Luga () is a river in Novgorodsky and Batetsky Districts of Novgorod Oblast and Luzhsky, Volosovsky, Slantsevsky, and Kingiseppsky Districts of Leningrad Oblast of Russia. The river flows into the Luga Bay of the Gulf of Finland. It freezes up in the early December and stays under the ice until early April. The length of the Luga is , and the area of its drainage basin is . Its main tributary is the Oredezh (right). The towns of Luga and Kingisepp, as well as the urban-type settlement of Tolmachyovo are located on the banks of the Luga. The mouth of the Luga is the site of the Ust-Luga container terminal. The source of the Luga is located in a peat production area in the northwest of Novgorod Oblast, several dozen kilometers northwest of the city of Veliky Novgorod. The river flows south, crosses into Batetsky District, and gradually turns west. A stretch of the Luga serves the border between Novgorod and Leningrad Oblasts. There, the Luga flows northwest, in the tow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baltic-Ladoga Klint
The Baltic Klint (Clint, Glint; et, Balti klint, sv, Baltiska klinten, russian: Балтийско-Ладожский уступ, Глинт) is an erosional limestone escarpment and cuesta on several islands of the Baltic Sea, in Estonia, in Leningrad Oblast of Russia and in the islands of Gotland and Öland of Sweden. It was featured on the reverse of the 50 krooni note of 1928 and on the 100 krooni note of 1992. The Baltic Klint is active landform showing some retreat in the present. However it is not known to which degree the Baltic Klint originated in postglacial time or if it evolved from cliff-like forms sculpted by the Fennoscandian Ice Sheet. In Gotland 20th century cliff retreat rates have been estimated at 0.15 to 0.78 cm/year. Retreat of the Baltic Klint in Gotland has widened shore platforms. Geography The Baltic Klint extends approximately 1200 km from the island of Öland in Sweden through the continental shelf and the Estonian islands of Osmus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Duderhof Heights
Duderhof Heights or Duderhof Hills (russian: Дудергофские высоты; german: Duderhofer Höhen) is a small highland area in the southwestern part of Saint Petersburg ( Krasnoselsky District). The nearest railway station, Mozhayskaya (formerly Duderhof) of the Ligovo-Krasnoye Selo-Gatchina railroad (constructed in 1859), is situated immediately to the west of the hills. Geography The heights are located to the south of the town of Krasnoye Selo, on the northern edge of the Izhora Plateau, which consists of several hills, most notably, the Orekhovaya hill (russian: Ореховая гора, lit. ''Hazel Hill'', ), the highest point of Saint Petersburg at 176 m (577'), in the south, and the Voronya hill (russian: Воронья гора, lit. ''Crow Hill'', ), 147 m (482'), in the north. Sometimes other smaller hills are considered part of the area as well: the Lysaya hill (russian: Лысая гора, lit. ''Bald Hill'') further northward, the Kirchhof hill (russian: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Field (agriculture)
In agriculture, a field is an area of land, enclosed or otherwise, used for agricultural purposes such as cultivating crops or as a paddock or other enclosure for livestock. A field may also be an area left to lie fallow or as arable land. Many farms have a field border, usually composed of a strip of shrubs and vegetation, used to provide food and cover necessary for the survival of wildlife. It has been found that these borders may lead to an increased variety of animals and plants in the area, but also in some cases a decreased yield of crops. Paddock In Australian and New Zealand English, any agricultural field may be called a ''paddock'', especially if for keeping sheep or cattle. If stock are grazed there, the space may be called a ''run'', e.g. ''sheep run''; ''cattle run''. The term paddock is used more specifically in animal husbandry for a system in which grazing land is divided into small areas, paddocks, and the stock graze each paddock in turn for a short ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ingria
Ingria is a historical region in what is now northwestern European Russia. It lies along the southeastern shore of the Gulf of Finland, bordered by Lake Ladoga on the Karelian Isthmus in the north and by the River Narva on the border with Estonia in the west. The earliest known indigenous European peoples of the region are the now mostly Eastern Orthodox Izhorians and Votians, as well as the Ingrian Finns who descend from the Lutheran Finnish immigrants who settled in the area in the 17th century, when Finland proper and Ingria were both parts of the Swedish Empire. Ingria as a whole never formed a separate state, however North Ingria was an independent state for just under two years in 1919–1920. The Ingrians, understood as the inhabitants of Ingria regardless of ethnicity, can hardly be said to have been a nation, although the Soviet Union recognized their "nationality"; as an ethnic group, the Ingrians proper, Izhorians, are close to extinction together with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landforms Of Leningrad Oblast
A landform is a natural or anthropogenic land feature on the solid surface of the Earth or other planetary body. Landforms together make up a given terrain, and their arrangement in the landscape is known as topography. Landforms include hills, mountains, canyons, and valleys, as well as shoreline features such as bays, peninsulas, and seas, including submerged features such as mid-ocean ridges, volcanoes, and the great ocean basins. Physical characteristics Landforms are categorized by characteristic physical attributes such as elevation, slope, orientation, stratification, rock exposure and soil type. Gross physical features or landforms include intuitive elements such as berms, mounds, hills, ridges, cliffs, valleys, rivers, peninsulas, volcanoes, and numerous other structural and size-scaled (e.g. ponds vs. lakes, hills vs. mountains) elements including various kinds of inland and oceanic waterbodies and sub-surface features. Mountains, hills, plateaux, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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