Superior Type Banded Iron Formation

المنتجات الساخنة

Lake Superior-type banded-iron formation deposit Britannica

网页characteristics. 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.

Contact

A mixed seawater and hydrothermal origin of superior

网页2017年1月1日Banded iron formation. The studied banded iron-formations are medium- to coarse-grained, well banded and characterized by mesobanding of quartz/oxide facies

Contact

Banded Iron Formation SpringerLink

网页2023年3月16日Superior-type BIF are the largest source of iron used in industry, where three of the largest deposits in the world are located in the Carajás and Quadrilátero

Contact

2470 million-year-old banded iron formation reveals a climatic

网页2022年3月3日The modern-like solar cycle might have evolved as early as 2.47 billion years ago, according to synchrotron-radiation-based micro-scale analyses of a

Contact

Banded Iron Formation an overview ScienceDirect Topics

网页Banded Iron Formation, normally abbreviated to BIF, is a type of sedimentary rock commonly present in Precambrian sedimentary successions of specific ages. Apart from

Contact

Banded Iron Formations SpringerLink

网页The “Superior” type BIFs, including those in the Hamersley Group, Western Australia and the Transvaal Supergroup, South Africa, are hundreds of meters thick, over 10 5 km 2 in

Contact

Iron Formation: The Sedimentary Product of a Complex

网页2010年5月1日Texturally, iron formations were also divided into two groups. Banded iron formation (BIF) is dominant in Archean to earliest Paleoproterozoic successions,

Contact

A mixed seawater and hydrothermal origin of superior

网页2017年1月1日A mixed seawater and hydrothermal origin of superior-type banded iron formation (BIF)-hosted Kouambo iron deposit, Palaeoproterozoic Nyong series,

Contact

Spectral properties of Lake Superior banded iron formation:

网页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

Contact

Banded Iron Formations BIF Geology In

网页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

Contact

SUPERIOR FE DEPOSITS (MODEL 34a; Cannon, 1986)

网页Superior-type iron-formation forms extensive stratigraphic units, some containing tens of trillions of tons of material averaging about 30 percent iron. Individual mining blocks outlined within iron-formation, based largely on metallurgical characteristics related to grinding and concentration, commonly exceed a billion tons of reserves and

Contact

A compare geochemistry study for Algoma- and Superior-type banded iron

网页2012年11月1日Precambrian iron deposits are the most important mineral resource in the North China Craton, of which the banded iron formation (BIF) type is predominant, accounting for ~80% of metamorphosed

Contact

Depositional setting of Algoma-type banded iron formation

网页2016年8月1日1. Introduction. Algoma-type BIFs are thinly bedded, chemical sedimentary rocks comprising alternating layers of iron-rich minerals and chert. These rocks are typically intercalated with Eoarchean to late Paleoproterozoic volcano-sedimentary sequences within greenstone belts (Goodwin, 1973, Bekker et al., 2010).They differ from Superior-type

Contact

A mixed seawater and hydrothermal origin of superior-type banded iron

网页2017年1月1日The Kouambo iron deposit contains banded iron formations (BIFs) and is located in the northwestern margin of the Congo craton. The BIFs are hosted in Palaeoproterozoic Nyong series, a dominantly metasedimentary formations, which were metamorphosed into greenschist to granulite facies.The Kouambo BIFs are medium- to

Contact

Bändererz Wikipedia

网页Ein Bändererz ist ein eisenhaltiges, marines Sedimentgestein, das hauptsächlich im Präkambrium abgelagert wurde und das durch metallhaltige Lagen eine charakteristische Schichtstruktur besitzt. Im zur Schichtung senkrechten Schnitt erscheinen die vor allem aus Eisenmineralen bestehenden Schichten als Bänderstruktur, der das Erz im Deutschen

Contact

Depositional setting of Algoma-type banded iron formation

网页2016年8月1日Algoma-type banded iron formations (BIF) are chemical sedimentary rocks characterized by alternating layers of iron-rich minerals and chert that are generally interstratified with bimodal submarine volcanic rocks and/or sedimentary sequences in Archean greenstone belts. However, the geological setting for Algoma-type BIF

Contact

Types and general characteristics of the BIF-related iron

网页2014年3月1日These BIFs belong to the Superior-type, and are represented by Dalizi iron deposit in Jilin province, Tianhu iron deposit in Xinjiang Uighur Autonomous Region and Fengshanying iron deposit in Sichuan province. (4) Xinyu-type: Neoproterozoic banded iron formations (BIFs) with magnetite as the ore mineral (20% ≤ TFe < 50%).

Contact

Iron Formation: The Sedimentary Product of a Complex

网页2010年5月1日Superior-type iron formation first appeared at ca. 2.6 Ga, when construction of large continents changed the heat flux at the core-mantle boundary. From ca. 2.6 to ca. 2.4 Ga, global mafic magmatism culminated in the deposition of giant Superior-type BIF in South Africa, Australia, Brazil, Russia, and Ukraine.

Contact

Gunflint chert Wikipedia

网页Gunflint Range. The Gunflint chert (1.88 Ga [1]) is a sequence of banded iron formation rocks that are exposed in the Gunflint Range of northern Minnesota and northwestern Ontario along the north shore of Lake Superior. The Gunflint Chert is of paleontological significance, as it contains evidence of microbial life from the Paleoproterozoic. [2]

Contact

Petrology and Geochemistry of the Banded Iron Formation of the

网页Xinjiang province. Recently, many banded iron formation (BIF)-type (Superior-type) deposits have been dis-covered in the western part of the Kuluketage block. These deposits occurred in the Paleoproterozoic Shayiti Formation, Xingditage Group, which has a nearly E–W distribution in the southern Xinger and Xingdi faults.

Contact

Banded Iron Formation SpringerLink

网页2023年3月16日Banded iron formations (BIFs) comprise the largest iron resource on Earth. They formed throughout much of the Precambrian (∼3800–543 Ma), reaching their maximum abundance between 2700 and 2400 Ma ago. Superior-type BIF are the largest source of iron used in industry,

Contact

Banded Iron Formation an overview ScienceDirect Topics

网页Age distributions of Rapitan/Clinton iron-formations, Algoma and Superior type banded iron-formations, volcanogenic massive sulphide deposits, vein-type Au–U deposits, and quartz-pebble conglomerate-type Au–U deposits. Data from Meyer (1985), Kimberley (1989), Barley and Groves (1992), and Ohmoto (1996a).

Contact

Iron-rich sedimentary rocks Wikipedia

网页Iron-rich sedimentary rocks are sedimentary rocks which contain 15 wt.% or more iron.However, most sedimentary rocks contain iron in varying degrees. The majority of these rocks were deposited during specific geologic time periods: The Precambrian (3800 to 539 million years ago), the early Paleozoic (539 to 419 million years ago), and the middle

Contact

Types and general characteristics of the BIF-related iron deposits

网页2014年3月1日BIFs (banded iron formations) in China, which account for approximately 64% of the total identified resources in the country, belong to two categories: a predominant Neoarchean Algoma-type and a few Paleoproterozoic Superior-type.

Contact

Algoma-, Superior-, and oolitic-type iron deposits of the Islamic

网页High-grade hematitic iron ores (or HIF, containing 60–65 percent Fe) have been mined in Mauritania from Superior-type iron deposits since 1952. Depletion of the high grade ores in recent years has resulted in a number of new projects focused on lower grade magnetite ores in Algoma-type banded iron formation (or BIF, containing approximately 35

Contact

Depositional Setting of Algoma-type Banded Iron Formation

网页2016年5月1日Banded iron formations (BIFs) are widespread over the world (3.81 Ga to 1.80 Ga) as the Algoma and Superior types. The stone provides new isotope (Nd-Sr, U-Pb) data on associated noble-metal

Contact

Banded Iron Formations SpringerLink

网页The “Superior” type BIFs, including those in the Hamersley Group, Western Australia and the Transvaal Supergroup, South Africa, are hundreds of meters thick, over 10 5 km 2 in areal extent, and contain >10 13 t of iron (Trendall, 2002).

Contact

Spectral properties of Lake Superior banded iron formation:

网页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, continental shelf or shallow basin environment under stable tectonic conditions, and the oxide facies contains gray, crystalline hematite.

Contact

Algoma-type banded-iron formation deposit Britannica

网页Other articles where Algoma-type banded-iron formation deposit is discussed: mineral deposit: Iron deposits: of BIF, known as an Algoma type, formed over a much wider time range than the Lake Superior type (from 3.8 billion to a few hundred million years ago). Algoma-type BIFs are also finely layered intercalations of silica and an iron mineral,

Contact