Zobrazeno 1 - 10
of 67
pro vyhledávání: '"Janet R. Muhling"'
Publikováno v:
Minerals, Vol 11, Iss 11, p 1288 (2021)
The Boulder Lefroy-Golden Mile fault system in the Archean Yigarn Craton is the most productive gold-mineralized structure in Australia (>2300 t Au). The New Celebration deposit (51 t Au) is part of a group of hematite- and anhydrite-bearing mesother
Externí odkaz:
https://doaj.org/article/a5b5fa67b87e48baa3a03fcb595885a2
Publikováno v:
Geochimica et Cosmochimica Acta. 320:324-338
Phosphorus (P) availability exerts a strong influence on primary productivity in global oceans. However, its abundance and role as a limiting nutrient prior to the start of the Great Oxygenation Event (GOE) 2.45–2.32 Ga is unclear. Low concentratio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b48e29b49dbafb7283b468d6f625685f
Publikováno v:
Geology. 49:1467-1472
Uranium-Th-Pb dating of phosphate minerals in very low-grade metasedimentary rocks from the Archean Pilbara Craton, Western Australia, has revealed a long history of deformation and fluid flow during the Paleoproterozoic. However, this technique has
Publikováno v:
GSA Bulletin. 134:776-790
An enduring problem in the assembly of Laurentia is uncertainty about the nature and timing of magmatism, deformation, and metamorphism in the Paleoproterozoic Wisconsin magmatic terranes, which have been variously interpreted as an intra-oceanic arc
Publikováno v:
Astrobiology. 21:655-672
The 1.88-billion-year-old Gunflint carbonaceous microfossils are renowned for their exceptional morphological and chemical preservation, attributed to early and rapid entombment in amorphous silica. The carbonaceous matter lining and partly filling f
Publikováno v:
Geology. 49:647-651
Phosphorus is an essential nutrient that is thought to have regulated primary productivity in global oceans after the advent of oxygenic photosynthesis. The prime source of seawater phosphorus is regarded to be continental weathering of phosphate min
Publikováno v:
Geology. 48:961-965
Fluid flow in the upper crust not only impacts the redistribution of heat and elements, driving the formation of economic ore deposits, but it also exerts control on metamorphism, metasomatism, and deformation. However, reconstructing the history of
Autor:
Birger Rasmussen, Janet R. Muhling
Publikováno v:
Geology. 48:688-692
The 1.88 Ga Gunflint Formation in Ontario, Canada, has played a key role in the development of current models for the deposition of iron formations. The presence of hematite-rich iron formation intercalated with chert stromatolites containing purport
Publikováno v:
Earth and Planetary Science Letters. 604:117997