Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Jaana Halla"'
Autor:
Arto Luttinen, Risto Väinölä, Jaana Halla, Björn Kröger, Kari Lintulaakso, Aino Juslén, Markku Oinonen, Pasi Sihvonen, Marko-Tapio Hyvärinen
Publikováno v:
Research Ideas and Outcomes, Vol 7, Iss , Pp 1-16 (2021)
The Geology Collection is part of the national collections of the Finnish Museum of Natural History Luomus. General principles and guidelines for the collections are defined in the General Collection Policy of Luomus. The Geology Collection Policy is
Externí odkaz:
https://doaj.org/article/d90bd00e86564c829133c4a4b80dc7ec
Publikováno v:
Lithosphere, Vol 2022, Iss Special 8 (2022)
AbstractThe Bundelkhand craton in central India consists mainly of abundant high-K granitoids formed at the Archaean-Proterozoic boundary and several enclosed rafts of TTGs (tonalite-trondhjemite-granodiorites) up to 3.5 Ga. Therefore, the Bundelkhan
Externí odkaz:
https://doaj.org/article/c04d1b97a94e400785e377184088587c
Autor:
Jaana Halla
Publikováno v:
Frontiers in Earth Science, Vol 8 (2020)
The Earth’s early basaltic crust converted episodically into felsic TTG (tonalite-trondhjemite-granodiorite) crust by unknown tectonic processes. To contribute to the debate on the possible tectonic settings of TTGs, this article illustrates and ex
Externí odkaz:
https://doaj.org/article/257937c68aa64839b37ddcb423486c26
Autor:
Jaana Halla
Publikováno v:
Geosciences, Vol 8, Iss 9, p 353 (2018)
The Archaean (4.0–2.5 Ga) continental crust is mainly composed of granitoids, whose geochemical characteristics are a function of their formation mechanisms and components, as well as physical conditions of their source. Therefore, revealing change
Externí odkaz:
https://doaj.org/article/4fa0cb7ef0964ed1b2eb5797d670d546
The Bundelkhand craton in central India consists mainly of abundant high-K granitoids formed at the Archaean-Proterozoic boundary and several enclosed rafts of TTGs (tonalite-trondhjemite-granodiorites) up to 3.5 Ga. Therefore, the Bundelkhand craton
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6bcc323c07147f6796294522d7543d8d
http://hdl.handle.net/10138/348423
http://hdl.handle.net/10138/348423
Autor:
Kira Musiyachenko, Matthijs Smit, Summer Caton, Robert B. Emo, Melanie Kielman-Schmitt, Ellen Kooijman, Anders Scherstén, Jaana Halla, Wouter Bleeker, J. Elis Hoffmann, Om Prakash Pandey, Arathy Ravindran, Alessandro Maltese, Klaus Mezger
Much of the continental lithosphere developed during the Archean, which was an Eon of change in terms of global geodynamics and geochemical cycles. Uncovering the causal links between crust forming processes and prevailing geodynamic mechanisms is cr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34eb8e4ede3946165525bfd1fa630181
https://doi.org/10.5194/egusphere-egu22-3181
https://doi.org/10.5194/egusphere-egu22-3181
Autor:
Jaana Halla
Publikováno v:
Lithos. :207-221
Lead isotopes are a powerful tool in studying Archaean granitoids and continental growth, because 207Pb is a sensitive indicator of involvement of lead from old Archaean crustal sources. This paper aims to demonstrate the significance and promote the
Publikováno v:
Precambrian Research. 314:41-61
Several profound changes, including those involving formation of the continental crust, occurred on Earth during the Neoarchaean Era. However, the tectonic settings associated with Neoarchaean crustal growth are not well understood and vigorously deb
Publikováno v:
Geological Society, London, Special Publications. 449:1-18
Autor:
Talat Ahmad, Matti Kurhila, Gargi Rai, A.K. Choudhary, Kumar Batuk Joshi, Esa Heilimo, Joyeeta Bhattacharjee, Jaana Halla
Publikováno v:
Geological Society, London, Special Publications. 449:123-157