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Omars
Omars, are a distinctive type of glacial erratic that consists of dark siliceous greywacke and exhibits prominent rounded, often deep, hemispherical voids and pits. The hemispherical voids and pits result from the selective dissolution of carbonate concretions within the greywacke. The greywacke is identifiable by its low metamorphic grade and the 10–40% rock fragments, distinctive volcanic clasts, and spherical carbonate concretions that it contains. Omars are typically rounded and range in size from pebbles to boulders. Their rounded shape, whether found in glacial tills or glacial-fluvial (outwash) gravels, indicate that they were eroded from pre-existing littoral or fluvial deposits. Omars are typically found associated with granules and pebbles of oolitic jasper that were transported from the Belcher Islands in Hudson Bay, Canada.Donaldson, A. and V.K. Prest (1997) ''Criteria for recognizing omars, widely dispersed indicators of Pleistocene history in North America.'' GA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cupstone
Cupstones, also called anvil stones, pitted cobbles and nutting stones, among other names, are roughly discoidal or amorphous groundstone artifacts among the most common lithic remains of Native American culture, especially in the Midwestern United States, in Early Archaic contexts. The hemispherical indentation itself is an important element of paleoart, known as a "cupule". Cup and ring marks are also common in the Fertile Crescent and India, and later in the Mediterranean, Atlantic, and Alpine regions of Europe, sometimes associated with complex petroglyphs or megalithic monuments. Etymology One encyclopedia of archaeology treats "pitted stone", "cupstones", and "nutting stones" as synonyms and says that they "may have been formed by cracking nutshells, though this activity lacks adequate confirmation through ethnographic examples or published experimentation." Purpose These objects have received little study, perhaps because edged tools and weapons have more intrinsic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Proterozoic
The Proterozoic ( ) is the third of the four geologic eons of Earth's history, spanning the time interval from 2500 to 538.8 Mya, and is the longest eon of Earth's geologic time scale. It is preceded by the Archean and followed by the Phanerozoic, and is the most recent part of the Precambrian "supereon". The Proterozoic is subdivided into three geologic eras (from oldest to youngest): the Paleoproterozoic, Mesoproterozoic and Neoproterozoic. It covers the time from the appearance of free oxygen in Earth's atmosphere to just before the proliferation of complex life on the Earth during the Cambrian Explosion. The name ''Proterozoic'' combines two words of Greek origin: meaning "former, earlier", and , meaning "of life". Well-identified events of this eon were the transition to an oxygenated atmosphere during the Paleoproterozoic; the evolution of eukaryotes via symbiogenesis; several global glaciations, which produced the 300 million years-long Huronian glaciation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adder Stone
An adder stone is a type of stone, usually glassy, with a naturally occurring hole through it. Such stones, which usually consist of flint, have been discovered by archaeologists in both Britain and Egypt. Commonly, they are found in Northern Germany at the coasts of the North and Baltic Seas. In Britain they are also called hag stones, witch stones, fairy stones, serpent's eggs, snake's eggs, or ''Glain Neidr'' in Wales, ''milpreve'' in Cornwall, ''adderstanes'' in the south of Scotland and ''Gloine nan Druidh'' ("Druids' glass" in Scottish Gaelic) in the north. In Germany they are called ''Hühnergötter'' ("chicken gods"). Various traditions exist as to the origins of adder stones. One holds that the stones are the hardened saliva of large numbers of serpents massing together, the perforations being caused by their tongues. There are other claims that an adder stone comes from the head of a serpent or is made by the sting of an adder. The more modern and perhaps easier to att ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yup’ik
The Yupʼik or Yupiaq (sg & pl) and Yupiit or Yupiat (pl), also Central Alaskan Yupʼik, Central Yupʼik, Alaskan Yupʼik (Central Alaskan Yupʼik language, own name ''Yupʼik'' sg ''Yupiik'' dual ''Yupiit'' pl; Russian language, Russian: Юпики центральной Аляски), are an Indigenous people of western and southwestern Alaska ranging from southern Norton Sound southwards along the coast of the Bering Sea on the Yukon-Kuskokwim Delta (including living on Nelson Island (Alaska), Nelson and Nunivak Island, Nunivak Islands) and along the northern coast of Bristol Bay as far east as Nushagak Bay and the northern Alaska Peninsula at Naknek River and Egegik Bay. They are also known as Cupʼik by the Chevak Cupʼik language, Chevak Cupʼik dialect-speaking people of Chevak, Alaska, Chevak and Cupʼig for the Nunivak Cupʼig language, Nunivak Cupʼig dialect-speaking people of Nunivak Island. The Yupiit are the most numerous of the various Alaska Natives, Alaska Nativ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nunavik
Nunavik (; ; ) is an area in Canada which comprises the northern third of the province of Quebec, part of the Nord-du-Québec region and nearly coterminous with Kativik. Covering a land area of north of the 55th parallel, it is the homeland of the Inuit of Quebec and part of the wider Inuit Nunangat. Almost all of the 14,045 inhabitants ( 2021 census) of the region, of whom 90% are Inuit, live in fourteen northern villages on the coast of Nunavik and in the Cree reserved land (TC) of Whapmagoostui, near the northern village of Kuujjuarapik. means "great land" in the local dialect of Inuktitut and the Inuit inhabitants of the region call themselves . Until 1912, the region was part of the District of Ungava of the Northwest Territories. Negotiations for regional autonomy and resolution of outstanding land claims took place in the 2000s. The seat of government would be Kuujjuaq. Negotiations on better empowering Inuit political rights in their land are still ongoing. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inuktitut
Inuktitut ( ; , Inuktitut syllabics, syllabics ), also known as Eastern Canadian Inuktitut, is one of the principal Inuit languages of Canada. It is spoken in all areas north of the North American tree line, including parts of the provinces of Newfoundland and Labrador, Quebec, to some extent in northeastern Manitoba as well as the Northwest Territories and Nunavut. It is one of the aboriginal languages written with Canadian Aboriginal syllabics. It is recognized as an official language in Nunavut alongside Inuinnaqtun and both languages are known collectively as ''Inuktut''. Further, it is recognized as one of eight official native tongues in the Northwest Territories. It also has legal recognition in Nunavik—a part of Quebec—thanks in part to the James Bay and Northern Quebec Agreement, and is recognized in the Charter of the French Language as the official language of instruction for Inuit school districts there. It also has some recognition in NunatuKavut and Nunatsiavu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inuit
Inuit (singular: Inuk) are a group of culturally and historically similar Indigenous peoples traditionally inhabiting the Arctic and Subarctic regions of North America and Russia, including Greenland, Labrador, Quebec, Nunavut, the Northwest Territories, Yukon (traditionally), Alaska, and the Chukotsky District of Chukotka Autonomous Okrug. The Inuit languages are part of the Eskaleut languages, also known as Inuit-Yupik-Unangan, and also as Eskimo–Aleut. Canadian Inuit live throughout most of Northern Canada in the territory of Nunavut, Nunavik in the northern third of Quebec, the Nunatsiavut in Labrador, and in various parts of the Northwest Territories and Yukon (traditionally), particularly around the Arctic Ocean, in the Inuvialuit Settlement Region. These areas are known, by Inuit Tapiriit Kanatami and the Government of Canada, as Inuit Nunangat. In Canada, sections 25 and 35 of the Constitution Act of 1982 classify Inuit as a distinctive group of Abo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moraines
A moraine is any accumulation of unconsolidated debris ( regolith and rock), sometimes referred to as glacial till, that occurs in both currently and formerly glaciated regions, and that has been previously carried along by a glacier or ice sheet. It may consist of partly rounded particles ranging in size from boulders (in which case it is often referred to as boulder clay) down to gravel and sand, in a groundmass of finely-divided clayey material sometimes called glacial flour. Lateral moraines are those formed at the side of the ice flow, and terminal moraines are those formed at the foot, marking the maximum advance of the glacier. Other types of moraine include ground moraines (till-covered areas forming sheets on flat or irregular topography) and medial moraines (moraines formed where two glaciers meet). Etymology The word ''moraine'' is borrowed from French , which in turn is derived from the Savoyard Italian ('mound of earth'). in this case was derived from Proven ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glaciers
A glacier (; or ) is a persistent body of dense ice, a form of rock, that is constantly moving downhill under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires distinguishing features, such as crevasses and seracs, as it slowly flows and deforms under stresses induced by its weight. As it moves, it abrades rock and debris from its substrate to create landforms such as cirques, moraines, or fjords. Although a glacier may flow into a body of water, it forms only on land“Glacier, N., Pronunciation.” Oxford English Dictionary, Oxford UP, June 2024, https://doi.org/10.1093/OED/7553486115. Accessed 25 Jan. 2025. and is distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water. On Earth, 99% of glacial ice is contained within vast ice sheets (also known as "continental glaciers") in the polar regions, but glaciers may be found in mountain ranges on every c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
