|
Dalle à Ammonites
The Dalle à ammonites (or Dalle aux ammonites) at Digne-les-Bains (Alpes-de-Haute-Provence) is a remarkable natural site consisting of a rock strata bearing a large number of fossilized ammonites. This site is located approximately 1.5 km south of Digne-les-Bains from Barles road. It is part of the Géologique de Haute-Provence National Nature Reserve. The slab, inclined at 60°, is made of grey limestone. It bears around 1 500 ammonites, 90% of which belonging to the species '' Coroniceras multicostatum'', dating from the Sinemurian (Early Jurassic). Those ammonites can attain a diameter of 70 cm. Nautiloids, belemnites, '' Pecten'' seashells and other bivalves can also be found in the deposit. The deposit thickness is estimated to be 20 cm, deposited over a 100 000-year period. Slab history As well known as it is, the slab wasn't known until recently : Alcide d'Orbigny, who prospected the area in the middle of the XIX century, doesn't mention it. Geologists s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digne-les-Bains
Digne-les-Bains (; Occitan: ''Dinha dei Banhs''), or simply and historically Digne (''Dinha'' in the classical norm or ''Digno'' in the Mistralian norm), is the prefecture of the Alpes-de-Haute-Provence department in the Provence-Alpes-Côte d'Azur region of Southeastern France. As of 2018, the commune had a population of 16,333. Its inhabitants are called ''Dignois'' (masculine) and ''Dignoises'' (feminine). Geography Site and location Located on the edge of the and on both sides of the river Bléone, which flows southwest through the middle of the commune and crosses the town; it forms part of the commune's northeastern and southwestern borders. Digne-les-Bains is the capital of the Department of Alpes de Haute-Provence. Placed in the geographical centre of the Department, the commune is home to 17,400 inhabitants, making it one of the smaller prefectures of France by its population. The town centre is at altitude. Digne is a sprawling commune in the plain formed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ichthyosaur
Ichthyosaurs (Ancient Greek for "fish lizard" – and ) are large extinct marine reptiles. Ichthyosaurs belong to the order known as Ichthyosauria or Ichthyopterygia ('fish flippers' – a designation introduced by Sir Richard Owen in 1842, although the term is now used more for the parent clade of the Ichthyosauria). Ichthyosaurs thrived during much of the Mesozoic era; based on fossil evidence, they first appeared around 250 million years ago ( Ma) and at least one species survived until about 90 million years ago, into the Late Cretaceous. During the Early Triassic epoch, ichthyosaurs and other ichthyosauromorphs evolved from a group of unidentified land reptiles that returned to the sea, in a development similar to how the mammalian land-dwelling ancestors of modern-day dolphins and whales returned to the sea millions of years later, which they gradually came to resemble in a case of convergent evolution. Ichthyosaurs were particularly abundant in the Late Triassic a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alps
The Alps () ; german: Alpen ; it, Alpi ; rm, Alps ; sl, Alpe . are the highest and most extensive mountain range system that lies entirely in Europe, stretching approximately across seven Alpine countries (from west to east): France, Switzerland, Italy, Liechtenstein, Austria, Germany, and Slovenia. The Alpine arch generally extends from Nice on the western Mediterranean to Trieste on the 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 thrusting and 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 128 peaks higher than . The altitude and size of the range affect the climate in Europe; in the mountains, precipitation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dauphiné
The Dauphiné (, ) is a former province in Southeastern France, whose area roughly corresponded to that of the present departments of Isère, Drôme and Hautes-Alpes. The Dauphiné was originally the Dauphiné of Viennois. In the 12th century, the local ruler Count Guigues IV of Albon (c. 1095–1142) bore a dolphin on his coat of arms and was nicknamed ''le Dauphin'' (French for dolphin). His descendants changed their title from Count of Albon to Dauphin of Viennois. The state took the name of Dauphiné. It became a state of the Holy Roman Empire in the 11th century. However, the Dauphin of France was the title of the eldest son of a king of France and the heir apparent to the French crown, from 1350 to 1830. The title was established by the royal house of France through the purchase of lands known as the Dauphiné in 1349 by the future Charles V of France. The Dauphiné is best known for its transfer from the last non-royal Dauphin (who had great debts and no direct hei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prealps
The Alpine foothills, or Prealps (german: Voralpen; french: Préalpes; it, Prealpi; ), may refer generally to any foothills at the base of the Alps in Europe. They are the transition zone between the High Alps and the Swiss Plateau and the Bavarian Alpine Foreland in the north, as well as to the Pannonian Basin (Alpokalja) in the east, the Padan Plain in the south and the Rhone Valley in the west. Classification The Alpine foothills comprise: *The French Prealps **Savoy Prealps **Dauphiné Prealps **Provence Prealps *The Swiss Prealps *The Northern Prealps, part of the Northern Limestone Alps: ** Bavarian Prealps in southeastern Germany **Salzburg Prealps, part of the Salzkammergut Mountains in Austria **Upper Austrian Prealps ** Lower Austrian Prealps, leading to the Vienna Woods *The Southeastern Prealps, borderline of the Alps to the Pannonian Basin in Austria and Slovenia: **Prealps East of the Mur **Lavanttal Alps **Styrian Prealps **Slovenian Prealps, Pohorje *The South ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gard
Gard () is a department in Southern France, located in the region of Occitanie. It had a population of 748,437 as of 2019;Populations légales 2019: 30 Gard INSEE its is Nîmes. The department is named after the river ; the name of the river, Gard (), has been replacing the French name in recent decades, both administratively and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fressac
Fressac () is a commune in the Gard department in southern France. Population See also *Communes of the Gard department This is a list of the 351 Communes of France, communes of the Gard Departments of France, department of France. The communes cooperate in the following Communes of France#Intercommunality, intercommunalities (as of 2020): References Communes of Gard {{Gard-geo-stub ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jurassic
The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The Jurassic constitutes the middle period of the Mesozoic, Mesozoic Era and is named after the Jura Mountains, where limestone strata from the period were first identified. The start of the Jurassic was marked by the major Triassic–Jurassic extinction event, associated with the eruption of the Central Atlantic magmatic province, Central Atlantic Magmatic Province. The beginning of the Toarcian Stage started around 183 million years ago and is marked by an extinction event associated with widespread Anoxic event, oceanic anoxia, ocean acidification, and elevated temperatures likely caused by the eruption of the Karoo-Ferrar, Karoo-Ferrar large igneous provinces. The end of the Jurassic, however, has no clear boundary with the Cretaceous and i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triassic
The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest period of the Mesozoic Era. Both the start and end of the period are marked by major extinction events. The Triassic Period is subdivided into three epochs: Early Triassic, Middle Triassic and Late Triassic. The Triassic began in the wake of the Permian–Triassic extinction event, which left the Earth's biosphere impoverished; it was well into the middle of the Triassic before life recovered its former diversity. Three categories of organisms can be distinguished in the Triassic record: survivors from the extinction event, new groups that flourished briefly, and other new groups that went on to dominate the Mesozoic Era. Reptiles, especially archosaurs, were the chief terrestrial vertebrates during this time. A specialized subgroup of archo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ammonoidea
Ammonoids are a group of extinct marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs, commonly referred to as ammonites, are more closely related to living coleoids (i.e., octopuses, squid and cuttlefish) than they are to shelled nautiloids such as the living ''Nautilus'' species. The earliest ammonites appeared during the Devonian, with the last species vanishing during the Cretaceous–Paleogene extinction event. Ammonites are excellent index fossils, and linking the rock layer in which a particular species or genus is found to specific geologic time periods is often possible. Their fossil shells usually take the form of planispirals, although some helically spiraled and nonspiraled forms (known as heteromorphs) have been found. The name "ammonite", from which the scientific term is derived, was inspired by the spiral shape of their fossilized shells, which somewhat resemble tightly coiled rams' horns. Pliny the Elder ( 79 AD nea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
%2C_Musée_de_la_Révolution_française_-_Vizille.jpg "Click for more on -> Dauphiné")
