Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Tapio Halkoaho"'
Autor:
Ville Järvinen, Nikolaos Karampelas, Tapani Rämö, Tapio Halkoaho, Tuomo Törmänen, Perttu Mikkola, Yann Lahaye
Publikováno v:
Bulletin of the Geological Society of Finland, Vol 95, Iss 2, Pp 107-134 (2023)
The target of this study is the Takanen greenstone belt (TGB), a small 11-km-long and east-west oriented supracrustal belt in the northern Lentua complex of the Western Karelia Subprovince (eastern Finland). We present a new geological interpretation
Externí odkaz:
https://doaj.org/article/e4506a2f087843feb84908bca36401b2
Autor:
Ville Järvinen, Tapio Halkoaho, Jukka Konnunaho, Jussi S. Heinonen, Tuomo Karinen, O. Tapani Rämö
Publikováno v:
Bulletin of the Geological Society of Finland, Vol 94, Iss 1, Pp 23-52 (2022)
The Paleoproterozoic Näränkävaara layered intrusion, northern Finland, has a surface area of 25 km x 5 km and a stratigraphic thickness of ~3 km. The main body of the intrusion includes a 1.5–2 km thick basal dunite series and a 1.3 km thick p
Externí odkaz:
https://doaj.org/article/a240a179e674482ba5a2472bb805c304
Autor:
Ville Järvinen, Tapio Halkoaho, Jukka Konnunaho, Jussi S. Heinonen, Sandra Kamo, Sarah Davey, Wouter Bleeker, Tuomo Karinen, O. Tapani Rämö
Publikováno v:
Bulletin of the Geological Society of Finland, Vol 94, Iss 1, Pp 53-74 (2022)
Several mafic-ultramafic layered intrusions were emplaced in the NE Fennoscandian Shield during a magmatic episode at 2.44 Ga. The Paleoproterozoic Näränkävaara layered intrusion, northern Finland, is one of the largest ultramafic bodies in the
Externí odkaz:
https://doaj.org/article/292f87d3e9bf4cb58f9598f22e44e8e8
Autor:
Johanna Tepsell, O. Tapani Rämö, Aku Heinonen, Yann Lahaye, Pieti Haapala, Tapio Halkoaho, Jussi S. Heinonen, Henri Höytiä, Jukka Konnunaho, Ville Järvinen
Publikováno v:
Bulletin of the Geological Society of Finland, Vol 92, Iss 1, Pp 5-17 (2020)
Archean terranes are generally poorly exposed and structurally complicated, making models of geological evolution difficult to establish. Because of pervasive metamorphism, strong deformation, and poorly exposed bedrock, the stratigraphy, geochronolo
Externí odkaz:
https://doaj.org/article/9191386d57bd44adb9c20a6ce6bf1e32
Autor:
Tapio Halkoaho
Publikováno v:
The Fennoscandian School of Ore Genesis in Layered Intrusions. Online Workshop 2.
The Penikat layered intrusion is located in southwest Lapland, Northern Finland. The intrusion contains two main units: the marginal series and layered series, the layered series being further divided into five megacyclic units (MCUs). The intrusion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c325b887b0e7a2c02eba03e9dcff147
https://doi.org/10.31241/arlin.2022.005
https://doi.org/10.31241/arlin.2022.005
Publikováno v:
Mineralium Deposita. 55:1535-1560
About 20 mafic-ultramafic layered intrusions in the northern Fennoscandian shield were emplaced during a widespread magmatic event at 2.5–2.4 Ga. The intrusions host orthomagmatic Ni-Cu-PGE and Cr-V-Ti-Fe deposits. We update the magmatic stratigrap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e0c2988be4eaf2a0e3fff0adbb3446ea
https://doi.org/10.1007/s00126-019-00934-z
https://doi.org/10.1007/s00126-019-00934-z
Several mafic-ultramafic layered intrusions were emplaced in the Fennoscandian Shield during wide-spread mantle-sourced magmatism at 2.5–2.4 Ga. The Näränkävaara intrusion (surface area 5 × 30 km2), northeastern Finland, contains a 1.5–2 km t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c04980c659a81845ed3c99809dc7ffd1
http://hdl.handle.net/10138/325640
http://hdl.handle.net/10138/325640
The Kiviniemi mafic intrusion, near the eastern margin of the Paleoproterozoic Central Finland Granitoid Complex, is both spatially and temporally associated with post-kinematic Fe-Ti-P-enriched Svecofennian orogenic mafic magmatism. The main rock ty
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::062db281a906216567ea9165225648a0
http://hdl.handle.net/10138/320837
http://hdl.handle.net/10138/320837
Publikováno v:
Journal of Petrology. 59:967-1006
The Palaeoproterozoic Penikat layered ultramafic–mafic intrusion in northern Finland is one of the most richly mineralized layered intrusions on Earth, containing at least six platinum-group element (PGE) enriched horizons exposed along >20 km of s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a9dc6ca7bc3104505ebcfe822fea7ea
https://doi.org/10.1093/petrology/egy051
https://doi.org/10.1093/petrology/egy051
Autor:
Tapio Halkoaho, Kalevi Rasilainen, Asko Kontinen, Hannu V. Makkonen, Jukka Konnunaho, Pasi Eilu
Publikováno v:
Ore Geology Reviews. 90:667-696
Several types of nickel sulphide deposits occur in Finland. Some of them are also important sources of Cu, Co and PGE. The main deposit types are related to Archaean and Palaeoproterozoic mafic to ultramafic rocks, Palaeoproterozoic metamorphosed bla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::608bfa618962013fa8055ca652743834
https://doi.org/10.1016/j.oregeorev.2017.06.008
https://doi.org/10.1016/j.oregeorev.2017.06.008