Lake Superior-type banded-iron formation deposit |
Other articles where Lake Superior-type banded-iron formation deposit is discussed: mineral deposit: Iron deposits:Lake Superior and are called Lake Superior-type deposits. Their individual sediment layers can be as thin as 0.5 millimetre (0.02 inch) or as thick as 2.5 centimetres (1 inch), but the alternation of a siliceous band and an iron mineral band is invariable. Several points about Lake Superior-typeLake Superior Type Banded Iron Formations as an Analog,01/12/2002· Archean Earth Banded Iron Formation (BIF) has been suggested as a possible terrestrial analog for Early Mars (Calvin, 1998). Two types of BIF in the United States and Canada have been differentiated based on their respective origins. The Algoma type deposits in Ontario, Canada are in close proximity to ancient volcanic centers suggesting a sub-aqueous hydrothermal origin similar to modern day sea-floor spreading centers (Gross, 1983). The Lake Superior type BIFBanded Iron Formation "BIF" | Geology Page,10/04/2013· Lake Superior-type banded iron formations were chemically precipitated on marine continental shelves and in shallow basins. They are commonly interlayered with other sedimentary or volcanic rocks such as shale and tuff. Most Lake Superior-type banded iron formations formed during the Paleoproterozoic, between 2.5 and 1.8 billion years ago.Banded iron formation - Sandatlas,Banded iron formation (BIF) is the principal source of iron. BIF is a, (Superior-type, named after lake Superior). They formed on stable continental shelves. Superior-type deposits are large in dimensions (more than 100 meters in thickness and over 100 km in lateral extent). The main iron-bearing phase is hematite, but magnetite occurs also. Iron mines where BIFs belong to Superior-type,Banded iron formation - Wikipedia,A typical banded iron formation consists of repeated, thin layers (a few millimeters to a few centimeters in thickness) of silver to black iron oxides, either magnetite (Fe3O4) or hematite (Fe2O3), alternating with bands of iron-poor chert, often red in color, of similar thickness. A single banded iron formation can be up to several hundred meters in thickness and extend laterally for several hundred kilometers. Banded iron formation is more precisely defined as chemically precipitated sedimentary rockcontainingBanded Iron Formations BIF - Geology In,Lake Superior-type banded iron formations were chemically precipitated on marine continental shelves and in shallow basins. They are commonly interlayered with other sedimentary or volcanic rocks such as shale and tuff. Most Lake Superior-type banded iron formations formed during the Paleoproterozoic, between 2.5 and 1.8 billion years ago.
Tidal deposits in the early Proterozoic basin of the Lake,
Tidal deposits in the early Proterozoic basin of the Lake Superior region—The Palms and the Pokegama Formations: Evidence for subtidal-shelf deposition of Superior-type banded iron-formationFresh-water environment of deposition of Precambrian,,Fresh-water environment of deposition of Precambrian banded iron formations [Lake Superior District]Abstract: Synchronous Deposition of Paleoproterozoic,,Synchronous Deposition of Paleoproterozoic Superior-Type Banded Iron-Formations and Volcanogenic Massive Sulfides In the Lake Superior Region: Implications for the Tectonic Evolution of the Penokean Orogen . SCHULZ, Klaus J., U.S. Geolological Survey, 954 National Center, Reston, VA 20192 and CANNON, William F., U.S. Geological Survey, 954 National Center, Reston, VA 20192,Abstract: Synchronous Deposition of Paleoproterozoic,,The tectonic setting of the Animikie basin in the Lake Superior region and Superior-type banded iron-formations within it have been variously interpreted as an intracratonic rift basin, passive continental margin, and collision-related foreland basin. This diversity of interpretations reflects in part past uncertainty in the age of the iron formations and in the relationship of the Animikie,iron-formation of Lake Superior type - English definition,,Learn the definition of 'iron-formation of Lake Superior type'. Check out the pronunciation, synonyms and grammar. Browse the use examples 'iron-formation of Lake Superior type' inThe Rock Picker's Guide to Lake Superior | Northern Wilds,,01/08/2016· Editor’s Note: The bottom of Lake Superior is paved with stones. However, many people have a hard time identifying what kinds of rocks they are looking at.The Rock Picker’s Guide to Lake Superior’s North Shore by Mark Sparky Stensaas is a great tool for locating and classifying over 15 different rocks. It also includes Lake Superior’s geological history, as well as beach profiles, tips,
Lake Superior - Wikipedia
Lake Superior is fed by more than 200 rivers, including the Nipigon River, the St. Louis River, the Pigeon River, the Pic River, the White River, the Michipicoten River, the Bois Brule River and the Kaministiquia River.The lake's outlet at St. Marys River has a relatively steep gradient with rapids. The Soo Locks enable ships to bypass the rapids and to overcome the 25-foot (8 m) height,Lake Superior | Size, Depth, States, & Facts | Britannica,Lake Superior, most northwesterly and largest of the Great Lakes of North America and one of the world’s largest bodies of fresh water. It is 350 miles (563 km) long (east to west), and its greatest width is 160 miles (258 km) from north to south. It has a maximum depth of 1,332 feet (406 meters).How to identify Lake Superior Agate | Livnfresh Blog|The,,30/03/2018· From its formation glaciers, currents, and rivers carried agates across the North and South America. The best place to start hunting for agate is where the soil has been moved or in the shorelines, riverbanks, and riverbeds. Currents constantly give these parts fresh supply of stones from the bottom of the lake. Gravel pits along the shores of Lake Superior are perfect for hunting agates,Field Collecting : Lake Superior Agates,28/04/2007· I am confident I can verify for you whether it is an actual agate or a different type of stone. I am very familiar with what shows up in the MN--WI--IA--IL river aggregates. If posting the pic to my email is easier, then I'm glad to help out. Very Sincerely, John O. 6th Jun 2009 16:07 UTC Kim Benning. Anyone know of a good place to find Lake Superior agates (not just tiny chips) in the Grand,Spectral Properties of Lake Superior Banded Iron,22/08/2006· Lake Superior Type (LST) banded iron formation (BIF) was investigated as a spectral and possible process analog to these deposits. In northern Michigan, LST BIF formed in a sedimentary,Palladium-bearing gold deposit hosted by Proterozoic lake,,Jacutinga is a highly sheared, metamorphosed, hydrothermally altered Lake Superior-type iron-formation composed of hematite, quartz, talc, phlogopite, with minor amounts of tourmaline, apatite, and monazite. In the Corpo Y orebody, the highest gold concentrations occur in quartz veins, whereas in the Corpo X, Central, Aba Leste, and Aba Notre orebodies, the highest gold grades occur in,
A compare geochemistry study for Algoma-and
The Precambrian banded iron formations (BIFs) are the most important type for iron resources in the world and extraordinary chemical marine sediments formation only occurred in the early Earth, which were concentrated during Archean to Early Proterozoic eras (3.2～1.8Ga) and recorded lithosphere, hydrosphere, atmosphere and biosphere status and evolvement then and there.The Lake Superior Basin's Fiery Beginning - Lake Superior,,01/06/2002· But the stage had now been set for the final act of the geologic drama that produced Lake Superior – the time during the past 2 million years when the Lake Superior basin itself would take shape as time and again the mighty ice sheets excavated the softer sedimentary rocks that occupied the center of the rift. When the last of the ice melted – about 10,000 years ago – Lake Superior was born.The Rock Picker's Guide to Lake Superior | Northern Wilds,,01/08/2016· Editor’s Note: The bottom of Lake Superior is paved with stones. However, many people have a hard time identifying what kinds of rocks they are looking at.The Rock Picker’s Guide to Lake Superior’s North Shore by Mark Sparky Stensaas is a great tool for locating and classifying over 15 different rocks. It also includes Lake Superior’s geological history, as well as beach profiles, tips,Lake Superior: Facts About the Greatest Great Lake | Live,,28/06/2017· Formation and history. Lake Superior first took shape about 1.2 billion years ago as a result of the North American Mid-Continent Rift, which carved an arc-shaped scar stretching from Kansas,Lake Superior-type iron formation - 蘇必略湖型含鐵層,Lake Superior-type iron formation 蘇必略湖型含鐵層 ; 以 蘇必略湖型含鐵層 進行詞彙精確檢索結果 出處/學術領域 中文詞彙 英文詞彙; 學術名詞 礦物學名詞 蘇必略湖型含鐵層 Lake Superior-type iron formation; 引用網址: / 10 筆 < > » 推文; 評分; 評分 相關 詞彙; 詞彙 建議; 學術名詞. 蘇必略湖型含鐵層 Lake Superior,Geochemical differences of magnetite from the Algoma-,Precambrian banded iron formations (BIFs) have been highly attractive study issues for decades about their genesis. Recently, more detailed geochemical studies have been conducted on mineral chemistry of magnetite using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). Magnetite geochemistry enables us to constrain the physicochemical controlling factors for abundance of,
lake superior-type iron formation中文翻譯,lake superior
lake superior-type iron formation中文蘇必利爾湖式含鐵建造…,點擊查查權威綫上辭典詳細解釋lake superior-type iron formation的中文翻譯,lake superior-type iron formation的發音,音標,用法和例Field Collecting : Lake Superior Agates,28/04/2007· I am confident I can verify for you whether it is an actual agate or a different type of stone. I am very familiar with what shows up in the MN--WI--IA--IL river aggregates. If posting the pic to my email is easier, then I'm glad to help out. Very Sincerely, John O. 6th Jun 2009 16:07 UTC Kim Benning. Anyone know of a good place to find Lake Superior agates (not just tiny chips) in the Grand,,,,,
