|
Rovno Amber
Rivne amber, occasionally called Ukrainian amber, is amber found in the Rivne Oblast and surrounding regions of Ukraine and Belarus. The amber is dated between Late Eocene and Early Miocene, and suggested to be contemporaneous to Baltic amber. Major exploration and mining of the amber did not start until the 1990s. Geology The late Eocene amber is hosted in the Mezhigorje Formation, with early reports of occurrences in the underlying Obukhov Formation as well. The formations are found along the northwestern margin of the Ukrainian Crystalline Shield exposed in the Rivne region of the Ukraine and across the border near Rechitsa in the Gomel Region of Belarus. The granite basement rock was overlain by sandy to clayey deposits that were host to alluvial amber. The two formations total between in thickness, both containing interbeds or mixtures of brown coals and carbonized vegetation. Both formations are sandy to clayey in texture, with the Obukhov having more clayey glaucon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brown Coal
Lignite, often referred to as brown coal, is a soft, brown, combustible, sedimentary rock formed from naturally compressed peat. It has a carbon content around 25–35%, and is considered the lowest rank of coal due to its relatively low heat content. When removed from the ground, it contains a very high amount of moisture which partially explains its low carbon content. Lignite is mined all around the world and is used almost exclusively as a fuel for steam-electric power generation. The combustion of lignite produces less heat for the amount of carbon dioxide and sulfur released than other ranks of coal. As a result, environmental advocates have characterized lignite as the most harmful coal to human health. Depending on the source, various toxic heavy metals, including naturally occurring radioactive materials may be present in lignite which are left over in the coal fly ash produced from its combustion, further increasing health risks. Characteristics Lignite is brown ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Amber Mining In Europe
History (derived ) is the systematic study and the documentation of the human activity. The time period of event before the invention of writing systems is considered prehistory. "History" is an umbrella term comprising past events as well as the memory, discovery, collection, organization, presentation, and interpretation of these events. Historians seek knowledge of the past using historical sources such as written documents, oral accounts, art and material artifacts, and ecological markers. History is not complete and still has debatable mysteries. History is also an academic discipline which uses narrative to describe, examine, question, and analyze past events, and investigate their patterns of cause and effect. Historians often debate which narrative best explains an event, as well as the significance of different causes and effects. Historians also debate the nature of history as an end in itself, as well as its usefulness to give perspective on the problems of the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tailings
In mining, tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction (gangue) of an ore. Tailings are different to overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed. The extraction of minerals from ore can be done two ways: placer mining, which uses water and gravity to concentrate the valuable minerals, or hard rock mining, which pulverizes the rock containing the ore and then relies on chemical reactions to concentrate the sought-after material. In the latter, the extraction of minerals from ore requires comminution, i.e., grinding the ore into fine particles to facilitate extraction of the target element(s). Because of this comminution, tailings consist of a slurry of fine particles, ranging from the size of a grain of sand to a few micrometres. Mine tailings are usually produced from the mill in slurry form, which i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ukrainian Railways
Ukrainian Railways ( uk, Укрзалізниця, Ukrzaliznytsia, abbreviated as UZ) is a state-owned joint-stock company of rail transport in Ukraine, a monopoly that controls the vast majority of the railroad transportation in the country. It possesses a combined total track length of over 23,000 km, making it the List of countries by rail transport network size, 13th largest in the world. Ukrainian Railways is also Rail usage statistics by country, the world's 6th largest rail passenger transporter and world's 7th largest freight transporter. In 2015, Ukrainian Railways transformed through a merger of a state agency and a state-owned enterprise into a public joint stock company owned by state. Ukraine's State Administration of Railroad Transportation is subordinated to the Ministry of Infrastructure (Ukraine), Ministry of Infrastructure, administering the railways through the six territorial railway companies that immediately control and provide of all aspects of the ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dubno
Dubno ( uk, Ду́бно) is a city and municipality located on the Ikva River in Rivne Oblast (province) of western Ukraine. It serves as the administrative center of Dubno Raion (district). The city is located on intersection of two major European routes, E40 and E85. The city is estimated to have a population of . It is located within the historic region of Volhynia. In Soviet times it was home to the Cold War facility Dubno air base. The city is also famous for its fortress. History Middle Ages First mentioned in a chronicle of 1100, when it was in possession of Yaroslav the Wise's grandson David of Brest , Dubno was even a seat of local princes for a short period of time. In 1240 the town was raided by the Mongols. In the early 14th century the region was the subject of Polish- Lithuanian rivalry, as a result of which Dubno became part of the latter. However, soon after with the Union of Krewo (1385), it came under Polish influence as part of the Polish-Lithuanian U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Globular Amphora Culture
The Globular Amphora culture (GAC, (KAK); ), c. 3400–2800 BC, is an archaeological culture in Central Europe. Marija Gimbutas assumed an Indo-European origin, though this is contradicted by newer genetic studies that show a connection to the earlier wave of Early European Farmers rather than to Western Steppe Herders from the Ukrainian and western-southern Russian steppes. The GAC preceded the Corded Ware culture in its central area. Somewhat to the south and west, it was bordered by the Baden culture. To the northeast was the Narva culture. It occupied much of the same area as the earlier Funnelbeaker culture. The name was coined by Gustaf Kossinna because of the characteristic pottery, globular-shaped pots with two to four handles. Extent The Globular Amphora culture was located in an area defined by the Elbe catchment on the west and that of the Vistula on the east, extending southwards to the middle Dniester and eastwards to reach the Dnieper. West of the Elbe, some globu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cro-Magnon
Early European modern humans (EEMH), or Cro-Magnons, were the first early modern humans (''Homo sapiens'') to settle in Europe, migrating from Western Asia, continuously occupying the continent possibly from as early as 56,800 years ago. They interacted and interbred with the indigenous Neanderthals (''H. neanderthalensis'') of Europe and Western Asia, who went extinct 40,000 to 35,000 years ago; and from 37,000 years ago onwards all EEMH descended from a single founder population which contributes ancestry to present-day Europeans. Early European modern humans (EEMH) produced Upper Palaeolithic cultures, the first major one being the Aurignacian, which was succeeded by the Gravettian by 30,000 years ago. The Gravettian split into the Epi-Gravettian in the east and Solutrean in the west, due to major climate degradation during the Last Glacial Maximum (LGM), peaking 21,000 years ago. As Europe warmed, the Solutrean evolved into the Magdalenian by 20,000 years ago, and these p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammoth
A mammoth is any species of the extinct elephantid genus ''Mammuthus'', one of the many genera that make up the order of trunked mammals called proboscideans. The various species of mammoth were commonly equipped with long, curved tusks and, in northern species, a covering of long hair. They lived from the Pliocene epoch (from around 5 million years ago) into the Holocene at about 4,000 years ago, and various species existed in Africa, Europe, Asia, and North America. They were members of the family Elephantidae, which also contains the two genera of modern elephants and their ancestors. Mammoths are more closely related to living Asian elephants than African elephants. The oldest representative of ''Mammuthus'', the South African mammoth (''M. subplanifrons''), appeared around 5 million years ago during the early Pliocene in what is now southern and eastern Africa. Descendant species of these mammoths moved north and continued to propagate into numerous subsequent spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mezhyrich, Cherkasy Oblast
Mezhyrich ( uk, Межиріч, also referred to as Mezhirich) is a village (''selo'') in central Ukraine. It is located in Cherkasy Raion (district) of Cherkasy Oblast (province), near the point where the Rosava River flows into the Ros'. Mezhyrich belongs to Kaniv urban hromada, one of the hromadas of Ukraine. Until 18 July 2020 Mezhyrich belonged to Kaniv Raion. The raion was abolished as part of the administrative reform of Ukraine, which reduced the number of raions of Cherkasy Oblast to four. The area of Kaniv Raion was merged into Cherkasy Raion. Mezhyrich hosted the administration of Mezhyrich rural hromada, which was abolished and merged into Kaniv urban hromada. Pre-historic finds In 1965, a farmer dug up the lower jawbone of a mammoth while in the process of expanding his cellar. Further excavations revealed the presence of 4 huts, made up of a total of 149 mammoth bones. These dwellings, dating back some 15,000 years, were determined to have been some of the ol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dnieper Ukraine
The term Dnieper Ukraine (: "over Dnieper land"), usually refers to territory on either side of the middle course of the Dnieper River. The Ukrainian name derives from ''nad‑'' (prefix: "above, over") + ''Dnipró'' ("Dnieper") + ''‑shchyna'' (suffix denoting a geographic region). The term ''Dnieper Ukraine'' appeared soon after the partitions of Poland when Ukraine as former territory of the Polish–Lithuanian Commonwealth became divided between the Russian Empire and Austrian Empire and was referred to the Russian controlled Ukraine. The term was phased away soon after 1939. Ukrainians sometimes call it Great Ukraine (). The term is mentioned in the Ukrainian Unification Act where it says: "From now on into one merge torn away one from other portions of United Ukraine, the West-Ukrainian People's Republic (Galicia, Bukovina, Ugric Ruthenia) and the Dnieper Great Ukraine (''Од нині во-єдино зливаються століттям одірвані одна ві ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neolithic
The Neolithic period, or New Stone Age, is an Old World archaeological period and the final division of the Stone Age. It saw the Neolithic Revolution, a wide-ranging set of developments that appear to have arisen independently in several parts of the world. This "Neolithic package" included the introduction of farming, domestication of animals, and change from a hunter-gatherer lifestyle to one of settlement. It began about 12,000 years ago when farming appeared in the Epipalaeolithic Near East, and later in other parts of the world. The Neolithic lasted in the Near East until the transitional period of the Chalcolithic (Copper Age) from about 6,500 years ago (4500 BC), marked by the development of metallurgy, leading up to the Bronze Age and Iron Age. In other places the Neolithic followed the Mesolithic (Middle Stone Age) and then lasted until later. In Ancient Egypt, the Neolithic lasted until the Protodynastic period, 3150 BC.Karin Sowada and Peter Grave. Egypt in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> History Of Amber Mining In Europe")
