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Geology Of Austria
The geology of Austria consists of Precambrian rocks and minerals together with younger marine sedimentary rocks uplifted by the Alpine orogeny. Geologic history Most of Austria's rocks formed in the last 540 million years, during the Phanerozoic explosion of life. Small zircon crystals, eroded out of three billion year old granites are among the few remnants of the Precambrian. Dobra Gneiss, at 1.38 billion years old, is the oldest rock in Austria within the Moldanubian Superunit in the Waldviertel region. Mica schist and phyllite were deposited between 900 and 500 million years ago. Cambrian In the Cadomian Event, fragments of continental crust such as the Bohemian Massif and the Alps joined the margin of the supercontinent Gondwana. Igneous activity occurred, in connection with small ocean basins opening. The Maissau granite, dated to 570 million years ago, in the eastern edge of the Bohemian Massif is a remnant of this igneous activity. The Austrian crustal components of Gond ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austria
Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous city and state. A landlocked country, Austria is bordered by Germany to the northwest, the Czech Republic to the north, Slovakia to the northeast, Hungary to the east, Slovenia and Italy to the south, and Switzerland and Liechtenstein to the west. The country occupies an area of and has a population of 9 million. Austria emerged from the remnants of the Eastern and Hungarian March at the end of the first millennium. Originally a margraviate of Bavaria, it developed into a duchy of the Holy Roman Empire in 1156 and was later made an archduchy in 1453. In the 16th century, Vienna began serving as the empire's administrative capital and Austria thus became the heartland of the Habsburg monarchy. After the dissolution of the H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spitzer Granodioritgneis Sl4
Spitzer is a surname. Notable people with the surname include: * Andre Spitzer (1945–1972), Israeli fencing coach and victim of the Munich massacre * Bernard Spitzer (1924–2014), American real estate developer and philanthropist, father of Eliot Spitzer * Eliot Spitzer (born 1959), 54th Governor of New York (2007–2008) * Frank Spitzer (1926–1992), Austrian-born American mathematician, author of Spitzer's formula * Frédéric Spitzer, 19th century art dealer, after whom the Spitzer Cross is named * Leo Spitzer (1887–1960), Austrian linguist * Lyman Spitzer (1914–1997), American theoretical physicist and mountaineer * Moritz Spitzer, scholar who gave his name to the Spitzer Manuscript * Robert Spitzer (priest) (born 1952), American Jesuit priest and president of Gonzaga University (1998–2009) * Robert R. Spitzer (1922–2019), American agricultural researcher and president of the Milwaukee School of Engineering (1977–1991) * Robert Spitzer (political scientist) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zircon
Zircon () is a mineral belonging to the group of nesosilicates and is a source of the metal zirconium. Its chemical name is zirconium(IV) silicate, and its corresponding chemical formula is Zr SiO4. An empirical formula showing some of the range of substitution in zircon is (Zr1–y, REEy)(SiO4)1–x(OH)4x–y. Zircon precipitates from silicate melts and has relatively high concentrations of high field strength incompatible elements. For example, hafnium is almost always present in quantities ranging from 1 to 4%. The crystal structure of zircon is tetragonal crystal system. The natural color of zircon varies between colorless, yellow-golden, red, brown, blue, and green. The name derives from the Persian ''zargun'', meaning "gold-hued". This word is corrupted into "jargoon", a term applied to light-colored zircons. The English word "zircon" is derived from ''Zirkon'', which is the German adaptation of this word. Yellow, orange, and red zircon is also known as "hyacinth", ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Calcareous Alps
The Northern Limestone Alps (german: Nördliche Kalkalpen), also called the Northern Calcareous Alps, are the ranges of the Eastern Alps north of the Central Eastern Alps located in Austria and the adjacent Bavarian lands of southeastern Germany. The distinction from the latter group, where the higher peaks are located, is based on differences in geological composition. Geography If viewed on a west–east axis, the Northern Limestone Alps extend from the Rhine valley and the Bregenz Forest in Vorarlberg, Austria in the west extending along the border between the German federal-state of Bavaria and Austrian Tyrol, through Salzburg, Upper Austria, Styria and Lower Austria and finally ending at the Wienerwald at the city-limits of Vienna in the east. The highest peaks in the Northern Limestone Alps are the Parseierspitze () in the Lechtal Alps,Reynolds, Kev (2010). ''Walking in the Alps'', Cicerone, . and the Hoher Dachstein (). Other notable peaks in this range include the Zugs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossilized Seashells (1778424953)
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the ''fossil record''. Paleontology is the study of fossils: their age, method of formation, and evolutionary significance. Specimens are usually considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years old to 4.1 billion years old. Early edition, published online before print. The observation in the 19th century that certain fossils were associated with certain rock strata led to the recognition of a geological timescale and the relative ages of different fossils. The development of radiometric dating techniques in the early 20th century allowed scientists to quantitatively measure the absolu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mödling 2382-2
Mödling () is the capital of the Austrian district of the same name located approximately 14 km south of Vienna. Mödling lies in Lower Austria's industrial zone (Industrieviertel). The Mödlingbach, a brook which rises in the Vienna Woods, flows through the town. Near Achau it joins with the Schwechat. Woodland occupies a large part of the municipality, part of the Föhrenberge ('Pine Mountains'). Located immediately south of Vienna, and within the boundaries of the district of Mödling, is one of the largest shopping centres in Europe: Shopping City Süd (SCS). Geography Grapes are grown on the slopes of the Wienerwald; the area is called ''Thermenregion'', where one can find much ''Heurigen'' (the most recent year's wine). Wiener Neudorf to the east, and Maria Enzersdorf to the north, merge directly into Mödling. South of Mödling is Gumpoldskirchen, separated by the Eichkogel with its very special flora. In the west a narrow street runs through Vorderbrühl, form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isel (river)
The Isel () is a glacier-fed river in East Tyrol, Austria. The river flow varies with daily and seasonal temperature changes, and the riverbed is constantly shifting, creating a unique environment. The river's course runs along a geological fault running from NW to SE. It held a glacier during the last ice age, which has left boulders and gravel along the valley. There have been various proposals to dam and divert the water for use in generating hydroelectricity which have been opposed by environmentalists. Since 2015 the river has been designated a Natura 2000 site, which offers some protection. There is a hiking trail along the river, and it is known for excellent whitewater rafting conditions. Course The Isel river flows from the Umbalkees glacier in the Hohe Tauern National Park near the summit of Rötspitze mountain. It is a tributary of the Drava (Drau). The catchment areas of the Isel and Drava together cover almost all of East Tyrol. The catchment area of the Isel is ab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siderite
Siderite is a mineral composed of iron(II) carbonate (FeCO3). It takes its name from the Greek word σίδηρος ''sideros,'' "iron". It is a valuable iron mineral, since it is 48% iron and contains no sulfur or phosphorus. Zinc, magnesium and manganese commonly substitute for the iron resulting in the siderite-smithsonite, siderite- magnesite and siderite-rhodochrosite solid solution series. Siderite has Mohs hardness of 3.75-4.25, a specific gravity of 3.96, a white streak and a vitreous lustre or pearly luster. Siderite is antiferromagnetic below its Néel temperature of 37 K which can assist in its identification. It crystallizes in the trigonal crystal system, and are rhombohedral in shape, typically with curved and striated faces. It also occurs in masses. Color ranges from yellow to dark brown or black, the latter being due to the presence of manganese. Siderite is commonly found in hydrothermal veins, and is associated with barite, fluorite, galena, and others. It i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
