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Wetterstein Formation
The Wetterstein Formation is a regional geologic formation of the Northern Limestone Alps and Western Carpathians extending from southern Bavaria, Germany in the west, through northern Austria to northern Hungary and western Slovakia in the east. The formation dates back to the Ladinian to Carnian stages of the Late Triassic. The formation is named after the Wetterstein Mountains in southern Germany and northwestern Austria. The center of its distribution, however, is in the Karwendel Mountains. It occurs in the Northern and Southern Limestone Alps and in the Western Carpathians. The formation is composed of mostly reefal limestones and dolomites, the latter the result of widespread diagenesis. In many areas there is a frequent alternation of limestone and dolomite facies. Local variants to indicate the Wetterstein Formation include german: Wettersteinkalk (Wetterstein Limestone), Wettersteindolomit ("Wetterstein Dolomite") and combinations thereof. The Wetterstein Format ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ladinian
The Ladinian is a stage and age in the Middle Triassic series or epoch. It spans the time between Ma and ~237 Ma (million years ago). The Ladinian was preceded by the Anisian and succeeded by the Carnian (part of the Upper or Late Triassic). The Ladinian is coeval with the Falangian regional stage used in China. Stratigraphic definitions The Ladinian was established by Austrian geologist Alexander Bittner in 1892. Its name comes from the Ladin people that live in the Italian Alps (in the Dolomites, then part of Austria-Hungary). The base of the Ladinian Stage is defined as the place in the stratigraphic record where the ammonite species '' Eoprotrachyceras curionii'' first appears or the first appearance of the conodont ''Budurovignathus praehungaricus''. The global reference profile for the base (the GSSP) is at an outcrop in the river bed of the Caffaro river at Bagolino, in the province of Brescia, northern Italy.The GSSP was established by Brack ''et al.'' (2005) The t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paleogene Transgression
The Paleogene ( ; also spelled Palaeogene or Palæogene; informally Lower Tertiary or Early Tertiary) is a geologic period and system that spans 43 million years from the end of the Cretaceous Period million years ago ( Mya) to the beginning of the Neogene Period Mya. It is the beginning of the Cenozoic Era of the present Phanerozoic Eon. The earlier term Tertiary Period was used to define the span of time now covered by the Paleogene Period and subsequent Neogene Period; despite no longer being recognised as a formal stratigraphic term, 'Tertiary' is still widely found in earth science literature and remains in informal use. Paleogene is often abbreviated "Pg" (but the United States Geological Survey uses the abbreviation PE for the Paleogene on the Survey's geologic maps). During the Paleogene, mammals diversified from relatively small, simple forms into a large group of diverse animals in the wake of the Cretaceous–Paleogene extinction event that ended the preceding Cr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbonate Rock
Carbonate rocks are a class of sedimentary rocks composed primarily of carbonate minerals. The two major types are limestone, which is composed of calcite or aragonite (different crystal forms of CaCO3), and dolomite rock (also known as dolostone), which is composed of mineral dolomite (CaMg(CO3)2). Calcite can be either dissolved by groundwater or precipitated by groundwater, depending on several factors including the water temperature, pH, and dissolved ion concentrations. Calcite exhibits an unusual characteristic called retrograde solubility in which it becomes less soluble in water as the temperature increases. When conditions are right for precipitation, calcite forms mineral coatings that cement the existing rock grains together or it can fill fractures. Karst topography and caves develop in carbonate rocks because of their solubility in dilute acidic groundwater. Cooling groundwater or mixing of different groundwaters will also create conditions suitable for cave ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austroalpine Nappes
The Austroalpine nappes are a geological nappe stack in the European Alps. The Alps contain three such stacks, of which the Austroalpine nappes are structurally on top of the other two (meaning they were thrust over the other two). The name Austroalpine means ''Southern Alpine'', because these nappes crop out mainly in the Eastern Alps (the Alps east of the line Lake Constance - Chur – Lake Como). Because the Austroalpine nappes consist of material from the former Apulian or Adriatic plate, that was thrust over the European plate, they are called allochthon nappes. In comparison with the other nappe stacks, they have experienced lower-grade metamorphism, which distinguishes them clearly from the Penninic nappes on which they rest. Lithologies The Austroalpine nappes are fragments of the former continental shelf and continental slope of the Apulian or Adriatic plate. These fragments contain rocks from the continental basement as well as from sedimentary rocks deposited in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tectonostratigraphy
In geology, tectonostratigraphy is stratigraphy that refers either to rock sequences in which large-scale layering is caused by the stacking of thrust sheets, or nappes, in areas of thrust tectonics or to the effects of tectonics on lithostratigraphy. Tectonically formed stratigraphy One example of such a tectonostratigraphy is the Scandinavian Caledonides. Within the entire exposed 1800 km length of this orogenic belt the following sequence is recognised from the base upwards: * Autochthon : undisturbed foreland of the Baltic plate * Parautochthon : thrust sheets that have moved only a short distance (up to 10s of km) from their original position * Lower allochthon : far travelled thrust sheets derived from the Baltic plate passive margin, mainly sediments associated with the break-up of Rodinia * Middle allochthon : also derived from the margin of the Baltic plate, Proterozoic basement and its psammitic cover * Upper allochthon : thrust sheets including island arc and oph ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diagenesis
Diagenesis () is the process that describes physical and chemical changes in sediments first caused by water-rock interactions, microbial activity, and compaction after their deposition. Increased pressure and temperature only start to play a role as sediments become buried much deeper in the Earth's crust. In the early stages, the transformation of poorly consolidated sediments into sedimentary rock (lithification) is simply accompanied by a reduction in porosity and water expulsion (clay sediments), while their main mineralogical assemblages remain unaltered. As the rock is carried deeper by further deposition above, its organic content is progressively transformed into kerogens and bitumens. The process of diagenesis excludes surface alteration (weathering) and deep metamorphism. There is no sharp boundary between diagenesis and metamorphism, but the latter occurs at higher temperatures and pressures. Hydrothermal solutions, meteoric groundwater, rock porosity, permeability, ... [...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 limes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coral Reef
A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in groups. Coral belongs to the class Anthozoa in the animal phylum Cnidaria, which includes sea anemones and jellyfish. Unlike sea anemones, corals secrete hard carbonate exoskeletons that support and protect the coral. Most reefs grow best in warm, shallow, clear, sunny and agitated water. Coral reefs first appeared 485 million years ago, at the dawn of the Early Ordovician, displacing the microbial and sponge reefs of the Cambrian. Sometimes called ''rainforests of the sea'', shallow coral reefs form some of Earth's most diverse ecosystems. They occupy less than 0.1% of the world's ocean area, about half the area of France, yet they provide a home for at least 25% of all marine species, including fish, mollusks, worms, crustaceans, echinoderms, sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Limestone Alps
The Southern Limestone Alps ( it, Alpi Sud-orientali, german: Südliche Kalkalpen), also called the Southern Calcareous Alps, are the ranges of the Eastern Alps south of the Central Eastern Alps mainly located in northern Italy and the adjacent lands of Austria and Slovenia. The distinction from the Central Alps, where the higher peaks are located, is based on differences in geological composition. The Southern Limestone Alps extend from the Sobretta- Gavia range in Lombardy in the west to the Pohorje in Slovenia in the east. Alpine Club classification Ranges of the Southern Limestone Alps according to the Alpine Club classification (from east to west): * Pohorje (1) * Kamnik–Savinja Alps (2) * Karawanks (3) * Julian Alps (4) * Gailtal Alps (5) * Carnic Alps (6) * Southern Carnic Alps (7) * Dolomites (8) * Fiemme Mountains (9) * Vicentine Alps (10) * Nonsberg Group (11) * Brenta Group (12) * Garda Mountains (13) * Ortler Alps (14) * Adamello-Presanella Alps (15) * Sobretta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karwendel
The Karwendel is the largest mountain range of the Northern Limestone Alps. The major part belongs to the Austrian federal state of Tyrol (state), Tyrol, while the adjacent area in the north is part of Bavaria, Germany. Four mountain chain, chains stretch from west to east; in addition, there are a number of fringe ranges and an extensive promontory (''Vorkarwendel'') in the north. Geography The term Karwendel describes the part of the Alps between the Isar river and the Seefeld Saddle mountain pass in the west and Achen Lake in the east. In the north it stretches to the Bavarian Prealps. In the south the Lower Inn Valley with the city of Innsbruck separates the Karwendel from the Central Eastern Alps. Other major settlements include Seefeld in Tirol and Mittenwald in the west, as well as Eben am Achensee in the east. Neighbouring ranges are the Wetterstein and Mieming Range, Mieming Mountains in the west and the Brandenberg Alps in the east. The mountaineer Hermann von Barth cre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wetterstein Mountains
The Wetterstein mountains (german: Wettersteingebirge), colloquially called Wetterstein, is a mountain group in the Northern Limestone Alps within the Eastern Alps. It is a comparatively compact range located between Garmisch-Partenkirchen, Mittenwald, Seefeld in Tirol and Ehrwald along the border between Germany (Bavaria) and Austria (Tyrol). Zugspitze, the highest peak is at the same time the highest mountain in Germany. The Wetterstein mountains are an ideal region for mountaineers and climbers. Mountain walkers sometimes need to allow for significant differences in elevation. The proximity of the range to the south German centres of population, the scenic landscape and its good network of cable cars and lifts mean that the mountains are heavily frequented by tourists for most of the year. There are, however, places in the Wetterstein that are rarely or never visited by people. Neighbouring ranges The Wetterstein borders on the following other mountain ranges of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slovakia
Slovakia (; sk, Slovensko ), officially the Slovak Republic ( sk, Slovenská republika, links=no ), is a landlocked country in Central Europe. It is bordered by Poland to the north, Ukraine to the east, Hungary to the south, Austria to the southwest, and the Czech Republic to the northwest. Slovakia's mostly mountainous territory spans about , with a population of over 5.4 million. The capital and largest city is Bratislava, while the second largest city is Košice. The Slavs arrived in the territory of present-day Slovakia in the fifth and sixth centuries. In the seventh century, they played a significant role in the creation of Samo's Empire. In the ninth century, they established the Principality of Nitra, which was later conquered by the Principality of Moravia to establish Great Moravia. In the 10th century, after the dissolution of Great Moravia, the territory was integrated into the Principality of Hungary, which then became the Kingdom of Hungary in 1000. In 1241 a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
