|
Ayagöz (river)
The Ayagöz ( kk, Аягөз) also spelled Ayaguz and Ayaköz, is a river of the Balkhash-Alakol Basin, Kazakhstan. Geography The Ayagöz is fed by snowmelt from the Tarbagatai Mountains and is used for irrigation, flowing into the eastern end of Lake Balkash, although there is no longer much flow from the river into the lake. The city of Ayagöz is located on its banks. The river is long and has a basin area of . History In 1717, Kaip Khan and Abul Khair Khan, Abul Khayr attacked the Dzungar Khanate, Dzungar Khanate but were defeated on the River Ayagöz. Various Russian explorations took place in the area in the first half of the 19th century. Federoff explored the area in 1834. Between 1837 and 1843 the trans-Irtysh steppe as far as the Ayagöz River and Chu River was mapped on a scale of five versts to the inch. The shores of Lake Balkash were also surveyed and explored. Prince Gortchakoff, governor of West Siberian economic region, Western Siberia, sent an officer named Ass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drainage Basin
A drainage basin is an area of land where all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, the '' drainage divide'', made up of a succession of elevated features, such as ridges and hills. A basin may consist of smaller basins that merge at river confluences, forming a hierarchical pattern. Other terms for a drainage basin are catchment area, catchment basin, drainage area, river basin, water basin, and impluvium. In North America, they are commonly called a watershed, though in other English-speaking places, "watershed" is used only in its original sense, that of a drainage divide. In a closed drainage basin, or endorheic basin, the water converges to a single point inside the basin, known as a sink, which may be a permanent lake, a dry lake, or a point where surface water is lost underground. Drainage basins are similar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Verst
A verst (russian: верста, ) is an obsolete Russian unit of length defined as 500 sazhen. This makes a verst equal to . Plurals and variants In the English language, ''verst'' is singular with the normal plural ''versts''. In Russian, the nominative singular is , but the form usually used with numbers is the genitive plural – 10 verst, 25 verst, etc. – whence the English form. A (russian: межевая верста, literally 'border verst') is twice as long as a verst. "The verst of the 17th century was 700 sazhens or 1.49 km as against the 500 sazhens or 1.067 km it became at the time of Peter the Great." Finnish ''virsta'' In Finland, a was originally 1,068.84 m according to the Swedish standard, but the Russian verst of 1,066.8 m replaced it after the province was annexed to the Russian Empire in 1809. A was originally 600 (fathoms, 1.781 m), but was then changed to 500 , since the Russian was longer, 2.134 m. A Finnish was defined as of a , the F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tarbagatai Range
The Tarbagatai Mountains ( mn, , , translit. ''Tarvagatai nuruu'', literally: "range with marmots"; ; kk, Тарбағатай жотасы, ''Tarbağatai jotasy'') are a range of mountains located in the north-western parts of Xinjiang, China, and the Abai Region of East Kazakhstan. The name of the mountain derived from Mongolian word: in Traditional Mongolian alphabet: mn, ( "tarvaga", meaning "marmot") with suffix mn, ( "-tai"; literally "to have" or "with"). Many Tarbagan marmot live in this mountain range. Their name does not have a direct translation from the English in Mongolian, as it would mean "marmot's marmot". An eastern extension of the Tarbagatai is the Saur Range. Drainage As it is common for mountain ranges, there is more precipitation in the Tarbagatai mountains than in the adjacent flatlands. The mountains are thus an important watershed. Streams from the northern slopes of the Tarbagatai flow into Lake Zaysan, which eventually drains (via the Irt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Akchi
Akchi, also spelled Akchiy, is a populated place in Kazakhstan. It has a small population and is in Pavlodar Region. Relatively nearby towns include Akhmat, Kyzyltash, Uzunbulak and Uzynbulaq. Astana, Karaganda, Pavlodar, Semey and Omsk are the closest big cities. Akchi is located north of Lake Balkhash. Akchi was the site of mercury and arsenic testing, along with Aralsk Aral, also known as Aralsk or Aral'sk, ( Kazakh: Арал, ''Aral'', ارال; Russian: Аральск, ''Araljsk'') is a small city in south-western Kazakhstan, located in the ''oblast'' (region) of Kyzylorda. It serves as the administrati .... References Populated places in Pavlodar Region {{Kazakhstan-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Katian
The Katian is the second stage of the Upper Ordovician. It is preceded by the Sandbian and succeeded by the Hirnantian Stage. The Katian began million years ago and lasted for about 7.8 million years until the beginning of the Hirnantian million years ago. During the Katian the climate cooled which started the Late Ordovician glaciation. Naming The name Katian is derived from Katy Lake (Atoka County, Oklahoma, United States). GSSP The GSSP of the Katian Stage is the Black Knob Ridge Section in southeastern Oklahoma (United States). It is an outcrop of the Womble Shale and the Bigfork Chert, the latter containing the lower boundary of the Katian. The lower boundary is defined as the first appearance datum of the graptolite Graptolites are a group of colonial animals, members of the subclass Graptolithina within the class Pterobranchia. These filter-feeding Filter feeders are a sub-group of suspension feeding animals that feed by straining suspended matter and ... spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Trilobite Genera
This list of trilobites is a comprehensive listing of all genera that have ever been included in the Arthropod class Trilobita, excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful ('), or were not formally published ('), as well as junior synonyms of more established names, and genera that are no longer considered trilobites. A Aa *''Aayemenaytcheia'' Ab *'' Abadiella'' (=''Parabadiella''; =''Danagouia'') *'' Abakania'' *'' Abakanopleura'' *'' Abakolia'' (=''Costadiscus'') *'' Abdulinaspis'' *'' Abharella'' Ac *'' Acadolenus'' *''Acadoparadoxides'' (=''Entomolithus''; =''Entomostracites''; =''Eoparadoxides'') *'' Acanthalomina'' *'' Acanthocephalus'' (=''Alomataspis'') *'' Acanthometopus'' *'' Acanthomicmacca'' (=''Chengkouia''; =''Jaskovitchella''; =''Myopsomicmacca'') *'' Acanthoparypha'' *'' Acanthophillipsia'' *'' Acanthopleurella'' *'' Acanthopyge'' (=''Euarges'') *'' Acastava'' *' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trilobite
Trilobites (; meaning "three lobes") are extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest-known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the Atdabanian stage of the Early Cambrian period () and they flourished throughout the lower Paleozoic before slipping into a long decline, when, during the Devonian, all trilobite orders except the Proetida died out. The last extant trilobites finally disappeared in the mass extinction at the end of the Permian about 252 million years ago. Trilobites were among the most successful of all early animals, existing in oceans for almost 270 million years, with over 22,000 species having been described. By the time trilobites first appeared in the fossil record, they were already highly diversified and geographically dispersed. Because trilobites had wide diversity and an easily fossilized exoskeleton, they left an extensive fossil record. The stu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ordovician
The Ordovician ( ) is a geologic period and System (geology), system, the second of six periods of the Paleozoic Era (geology), 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 Celtic Britons, 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 (geology), rock beds in North Wales in the Cambrian and Silurian systems, respectively. Lapworth recognized that the fossil fauna in the disputed Stratum, 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 Union of Geological Sciences, Intern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reed (plant)
Reed is a common name for several tall, grass-like plants of wetlands. Varieties They are all members of the order Poales (in the modern, expanded circumscription), and include: In the grass family, Poaceae * Common reed (''Phragmites australis''), the original species named reed * Giant reed (''Arundo donax''), used for making reeds for musical instruments * Burma reed (''Neyraudia reynaudiana'') * Reed canary-grass (''Phalaris arundinacea'') * Reed sweet-grass (''Glyceria maxima'') * Small-reed (''Calamagrostis'' species) In the sedge family, Cyperaceae * Paper reed or papyrus ('' Cyperus papyrus''), the source of the Ancient Egyptian writing material, also used for making boats In the family Typhaceae * Bur-reed (''Sparganium'' species) * Reed-mace (''Typha'' species), also called bulrush or cattail In the family Restionaceae * Cape thatching reed ('' Elegia tectorum''), a restio originating from the South-western Cape, South Africa. * Thatching reed (''Thamnochortus ins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sander Volgensis
The Volga pikeperch, or Volga zander (''Sander volgensis''), is a species of fish in the perch family Percidae. It is found in Austria, Azerbaijan, Bosnia and Herzegovina, Bulgaria, Croatia, Hungary, Moldova, Romania, Russia, Serbia, Slovakia, and Ukraine. Description The Volga pikeperch is considerably smaller than the zander or common pike-perch (''Sander lucioperca''). It grows to a maximum length of , weighing 2 kg. It differs from ''Sander lucioperca'' by not having large "vampire" like canine teeth, also the colour is more silvery-grey than green, with much more distinguishable dark stripes on the side. Its second dorsal fin has nineteen to twenty-one branched soft rays and the number of scales along the lateral line is seventy to eighty-three. Distribution and habitat The Volga pikeperch is found in the northern Black Sea basin from the Danube, as far upstream as Vienna, to the Kuban River drainages. It is also present in the Caspian Sea basin in the Volga River and Ur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Trilobite")
