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Allgäu Formation
The Allgäu Formation is a Formation (geology), geologic formation in Austria, Germany and Slovakia. It preserves fossils dating back to the Hettangian to Sinemurian stages of the Early Jurassic Period (geology), period, or Raricostatum to Obtusum in the regional stratigraphy. Initially and formally defined by Jacobshagen (1965).Jacobshagen, 1965 The Allgäu Formation is formerly known as spotted marls (Lias-Fleckenmergel) and spotted marly limestones (Fleckenkalk). The formation is represented by dark-grey bioturbated limestones and marlstone interbeds. It represents basinal hemipelagic faciesGawlick et al., 2009 common in Alpine Tethys Ocean, Tethys regions of Alps, Carpathians and other mountain ranges. Several horizons of the formation are particularly rich in ammonite fauna. Fossil content ;Fish * ''Agkistracanthus, Agkistracanthus sp.''Duffin & Furrer, 1981 ;AmmonitesBlau, 1998 * ''Echioceras, Echioceras raricostatoides'' * ''Epophioceras, Epophioceras landrioti'' * ''Lep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Formation (stratigraphy)
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics (lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exposed in a geographical region (the stratigraphic column). It is the fundamental unit of lithostratigraphy, the study of strata or rock layers. A formation must be large enough that it can be mapped at the surface or traced in the subsurface. Formations are otherwise not defined by the thickness (geology), thickness of their rock strata, which can vary widely. They are usually, but not universally, tabular in form. They may consist of a single lithology (rock type), or of alternating beds of two or more lithologies, or even a heterogeneous mixture of lithologies, so long as this distinguishes them from adjacent bodies of rock. The concept of a geologic formation goes back to the beginnings of modern scientific geology. The term was used by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marl
Marl is an earthy material rich in carbonate minerals, Clay minerals, clays, and silt. When Lithification, hardened into rock, this becomes marlstone. It is formed in marine or freshwater environments, often through the activities of algae. Marl makes up the lower part of the White cliffs of Dover, cliffs of Dover, and the Channel Tunnel follows these marl layers between France and the United Kingdom. Marl is also a common sediment in post-glacial lakes, such as the marl ponds of the northeastern United States. Marl has been used as a soil conditioner and neutralizing agent for acid soil and in the manufacture of cement. Description Marl or marlstone is a carbonate mineral, carbonate-rich mud or mudstone which contains variable amounts of Clay minerals, clays and silt. The term was originally loosely applied to a variety of materials, most of which occur as loose, earthy deposits consisting chiefly of an intimate mixture of clay and calcium carbonate, formed under freshwa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juraphyllites
Juraphyllites is a genus of ammonites belonging to the family Juraphyllitidae. Fossil record These ammonites lived in the Jurassic from Sinemurian to Toarcian The Toarcian is, in the International Commission on Stratigraphy, ICS' geologic timescale, an age (geology), age and stage (stratigraphy), stage in the Early Jurassic, Early or Lower Jurassic. It spans the time between 184.2 Megaannum, Ma (million ... (age range: 196.5 to 182.0 million years ago). Fossils of this genus can be found in Argentina, Austria, Canada, Chile, China, France, Germany, Hungary, Italy, Morocco, Portugal, Slovakia, Spain, Tunisia, Turkey and United States. Species Species within this genus include:[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteroceras
''Asteroceras'' ("star horn") is an extinct genus of cephalopod belonging to the Ammonite subclass. These fast-moving nektonic carnivores lived during the Triassic and Jurassic periods (from 205.6 to 189.6 Ma). Species *'' Asteroceras blakei'' Spath, 1925 *'' Asteroceras confusum'' Spath, 1925 *'' Asteroceras obtusum'' (Sowerby, 1817) *'' Asteroceras reynesi'' Fucini, 1903 *'' Asteroceras saltriensis'' Parona, 1896 *'' Asteroceras smithii'' (Sowerby, 1814) *'' Asteroceras stellare'' (Sowerby 1815) *'' Asteroceras turneri'' (Sowerby, 1814) Paleobiology Database - Asteroceras 2014-05-29. Distribution ''Asteroceras'' fossils may be found in the Jurassic marine strata of Canada, China, Germany, Hong Kong, Hungary, Peru, and Turkey, in the Triassic of ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Echioceras
''Echioceras'' is an extinct genus of ammonites from the Early Jurassic of Europe and North America. Description Shell of ''Echioceras'' species can reach a diameter of about .. The narrow and broad evolute shell is reinforced by fine ribs on inner whorls, progressively becoming stronger, straight and distinct. Distribution Fossils of species within this genus have been found in the Jurassic rocks of Canada, Hong Kong, Turkey and United Kingdom The United Kingdom of Great Britain and Northern Ireland, commonly known as the United Kingdom (UK) or Britain, is a country in Northwestern Europe, off the coast of European mainland, the continental mainland. It comprises England, Scotlan ..., CarpathiansRakús, M., 1962: Amonity v liase Západných Karpát (Ammonites in Liassic of Western Carpathians). Geologické práce, Zošit 62, pp. 267 – 271 and Alps. References ;Notes ;Bibliography *Cyril Walker & David Ward (1993) - Fossielen: Sesam Natuur Handboeken, Bosch & Keuning, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agkistracanthus
''Agkistracanthus'' is an extinct genus of chimaera from the Mesozoic era. It currently contains a single species, ''A. mitgelensis''. It is known from the Rhaetian to Hettangian epochs, spanning the transition from the Triassic to Jurassic period. Fossils from this genus are known from Switzerland, Austria, and Britain Britain most often refers to: * Great Britain, a large island comprising the countries of England, Scotland and Wales * The United Kingdom of Great Britain and Northern Ireland, a sovereign state in Europe comprising Great Britain and the north-eas .... It is known mostly from isolated and fragmentary material, including fin spines as well as palatine, symphyseal, and mandibular structures.Duffin, C. J., & Milan, J. (2017). A new myriacanthid holocephalian from the Early Jurassic of Denmark. ''Bulletin of the Geological Society of Denmark'', ''65'', 161-170. References Chimaeriformes Fossils of Austria Monotypic prehistoric cartilaginous fish genera { ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ammonite
Ammonoids are extinct, (typically) coiled-shelled cephalopods comprising the subclass Ammonoidea. They are more closely related to living octopuses, squid, and cuttlefish (which comprise the clade Coleoidea) than they are to nautiluses (family Nautilidae). The earliest ammonoids appeared during the Emsian stage of the Early Devonian (410.62 million years ago), with the last species vanishing during or soon after the Cretaceous–Paleogene extinction event (66 million years ago). They are often called ammonites, which is most frequently used for members of the order Ammonitida, the only remaining group of ammonoids from the Jurassic up until their extinction. Ammonoids exhibited considerable diversity over their evolutionary history, with over 10,000 species having been described. Ammonoids are excellent index fossils, and they have been frequently used to link rock layers in which a particular species or genus is found to specific Geologic time scale, geologic time periods. Their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carpathians
The Carpathian Mountains or Carpathians () are a range of mountains forming an arc across Central Europe and Southeast Europe. Roughly long, it is the third-longest European mountain range after the Urals at and the Scandinavian Mountains at . The highest peaks in the Carpathians are in the Tatra Mountains, exceeding , closely followed by those in the Southern Carpathians in Romania, exceeding . The range stretches from the Western Carpathians in Austria, the Czech Republic, Slovakia and Poland, clockwise through the Eastern Carpathians in Ukraine and Romania, to the Southern Carpathians in Romania and Serbia.About the Carpathians – Carpathian Heritage Society [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alps
The Alps () are some of the highest and most extensive mountain ranges in Europe, stretching approximately across eight Alpine countries (from west to east): Monaco, France, Switzerland, Italy, Liechtenstein, Germany, Austria and Slovenia. The Alpine arch extends from Nice on the western Mediterranean Sea, Mediterranean to Trieste on the Adriatic Sea, Adriatic and Vienna at the beginning of the Pannonian Basin. The mountains were formed over tens of millions of years as the African and Eurasian tectonic plates collided. Extreme shortening caused by the event resulted in marine sedimentary rocks rising by thrust fault, thrusting and Fold (geology), folding into high mountain peaks such as Mont Blanc and the Matterhorn. Mont Blanc spans the French–Italian border, and at is the highest mountain in the Alps. The Alpine region area contains 82 peaks higher than List of Alpine four-thousanders, . The altitude and size of the range affect the climate in Europe; in the mountain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
