Formation age and tectonic setting of the Shirengou Neoarchean banded iron deposit in eastern Hebei Province: Constraints from geochemistry and SIMS zircon U–Pb dating

Timing and tectonic setting of the Sijiaying banded iron deposit in the eastern Hebei province, North China Craton: Constraints from geochemistry and SIMS zircon U–Pb dating

“…What is more, an age of 2547 ± 7 Ma was reported by Zhang et al (2011) for the Shuichang BIF, and an age of 2541-2553 Ma was reported by Zhang et al (2012a) for the Shirengou BIF, both deposits being typical BIF deposits near the Sijiaying BIF. Based on the data above, it shows that it was not a local geological event related to the BIF, but a large-scale formation of the BIFs in eastern Hebei province of NCC around the 2.5 Ga. A most important magmatic event would take place at 2.5 Ga proved by many geochronological data (Peng and Zhai, 2002;Liu et al, 2009;Zhai, 2010), so the Sijiaying BIF is significant in realizing the evolutionary history of the NCC at this time.…”

“…Recently, Zhang et al (2011) reported that SIMS U-Pb dating of zircons from the plagioclase hornblende gneiss suggests that the Shuichang BIF was formed at ca. 2547 ± 7 Ma; then Zhang et al (2012a) reported that SIMS zircon U-Pb dating of zircons from the plagioclase amphibolite and hornblende plagiogneiss suggests that the Shirengou BIF formed at 2553-2541 Ma. Both studies inferred that the BIFs developed in an arc setting.…”

Neoarchean to Paleoproterozoic continental growth in the southeastern margin of the North China Craton: Geochemical, zircon U–Pb and Hf isotope evidence from the Huoqiu complex

“…The younger ages (2444 ± 29 Ma) are close to that of the voluminous granitic sheets intruding into the neighboring blocks in the NCC (ca. 2.5Ga, Geng et al, 2012;Zhang et al, 2012; Rapp et al (1999) and Smithies (2000). Santosh, 2013).…”

Geological characteristics and age of the Dahongliutan Fe-ore deposit in the Western Kunlun orogenic belt, Xinjiang, northwestern China

“…Algomatype BIFs occur along volcanic arcs, rift zones or deep-seated fault and fracture systems in deep oceans (Goodwin, 1962;Basta et al, 2011;Li et al, 2014;Xu et al, 2014), are relatively small and associated with coeval volcanic suites. Most of Algoma-type BIFs were developed in the Neoarchean and Paleoproterozoic periods (3.0-1.8 Ga), such as BIFs in the greenstone belts of Abitibi in Canada, Yilgarn in Australia, Dharwar in southern India, and North China Craton in China (Klein and Beukes, 1992;Huston and Logan, 2004;Klein, 2005;Zhang et al, 2011Zhang et al, , 2012aLi et al, 2014). Some BIFs in greenstone belts are considered to be a hydrothermalmetasomatic origin and occur along sheared lithological contacts, such as bedding and/or foliation truncation (Alexandrov, 1973;Hofmann et al, 2003).…”