Zobrazeno 1 - 10
of 63
pro vyhledávání: '"O. Tapani Rämö"'
Publikováno v:
Bulletin of the Geological Society of Finland, Vol 96, Iss 1, Pp 59-80 (2024)
Four quartz monzonite – granite intrusions forming the Sorsakoski granite lithodeme, are found within the Raahe-Ladoga suture zone in Central Finland. The prevailing potassium feldspar megacrystic quartz monzonites and granites form a bimodal assoc
Externí odkaz:
https://doaj.org/article/d92bf110ef59456ab3ef8d1a3db5db3d
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
Publikováno v:
Journal of Petrology. 63
The Permo-Carboniferous Oslo Rift is a narrow, aborted continental rift with comparatively little extension but voluminous magmatism, developed at a Proterozoic lithospheric discontinuity. On the southern flank of the onshore part of the rift, the mu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::298aebe3520d70267d7614f969080920
https://doi.org/10.1093/petrology/egac116
https://doi.org/10.1093/petrology/egac116
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
Autor:
Quinten H. A. van der Meer, Paavo Nikkola, O. Tapani Rämö, Thorvaldur Thordarson, Gudmundur H. Gudfinnsson, Maren Kahl, Eniko Bali
Publikováno v:
Jökull. 69:83-102
Our understanding of the long-term intrusive and eruptive behaviour of volcanic systems is hampered by a relatively short period of direct observation. To probe the conditions of crustal magma storage below South Iceland, we have analysed composition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d7a0bf318dbaa6f8ea737bda6191d11
https://doi.org/10.33799/jokull2019.69.083
https://doi.org/10.33799/jokull2019.69.083
Autor:
Calvin G Barnes, Nolwenn Coint, Melanie A Barnes, Kevin R Chamberlain, John M Cottle, O Tapani Rämö, Ariel Strickland, John W Valley
Publikováno v:
Journal of Petrology. 62
This study addresses the question of how and where arc magmas obtain their chemical and isotopic characteristics. The Wooley Creek batholith and Slinkard pluton are a tilted, mid- to upper-crustal part of a vertically extensive, late-Jurassic, arc-re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a59ec065b134b448f97ec408a0ceb1b0
https://doi.org/10.1093/petrology/egab065
https://doi.org/10.1093/petrology/egab065
Publikováno v:
Mineralogy and Petrology. 113:727-743
Na-metasomatic augite and aegirine-augite episyenites are hosted by subalkaline amphibole granites in the 1.644 Ga Suomenniemi rapakivi granite complex, southeastern Finland. In an examined drill core, episyenites are bordered by up to 50-cm-wide zon
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc7dc66acd12cdffdd4a6f2d64f52d67
https://doi.org/10.1007/s00710-019-00684-w
https://doi.org/10.1007/s00710-019-00684-w
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
