Results 21 to 30 of about 183 (136)
Sedimentology, Volume 68, Issue 7, Page 3057-3101, December 2021., 2021 Abstract Sediments deposited by glacial meltwaters (for example, ice‐contact delta deposits) form permeable packages in the subsurface that can act as reservoirs for both water and hydrocarbons. They are also an important source of aggregate for the construction industry.
Bartosz KurjaŃski +10 more
wiley +1 more source
Petrology, geochemistry, and geochronology of the leucogranites in southernmost Finland [PDF]
Bulletin of the Geological Society of FinlandIn the southernmost part of the Svecofennian province in Finland, leucogranites and migmatites stemming from both igneous and sedimentary protoliths reflect the complex magmatic history of the Svecofennian orogeny between 1.89 and 1.82 Ga.
Anna Saukko +4 more
doaj +1 more source
On the microfossils of Corycium enigmaticum [PDF]
Bulletin of the Geological Society of Finland, 1969 This paper deals with alga-like microfossils found in the about 2 000 m.y. old schist belt situated N of Tampere, SW Finland and belonging to the lower Svecofennian.
A. Matisto
doaj +1 more source
Terra Nova, Volume 33, Issue 5, Page 502-510, October 2021., 2021 Abstract Fault‐ and fracture‐hosted multi‐stage mineral assemblages that formed by fracture reactivation and fluid migration, constitute archives of the tectonic evolution of Precambrian cratons. Complex intergrowth patterns of these mineral records often hinder absolute dating of mineralization events for geological models.
Mikael Tillberg +5 more
wiley +1 more source
Detrital zircon geochronology of Paleoproterozoic metasedimentary rocks from Jämsä, Central Finland [PDF]
Bulletin of the Geological Society of FinlandIn this short communication, we present new detrital single grain zircon U-Pb data for six metasedimentary rock samples from Jämsä, Central Finland.
Perttu Mikkola +2 more
doaj +1 more source
Rare Earth Elements in Middle Precambrian Volcanic Rocks of Finland, with a Discussion of the Origin of the Rocks [PDF]
Bulletin of the Geological Society of Finland, 1975 The contents of rare earth elements (REE) have been determined in five Svecofennian metamorphosed volcanic rocks and are compared with those found in the Karelian zone and Recent tholeiites.
T. Koljonen, R.J. Rosenberg
doaj +1 more source
Zircon dating of the basalt and felsic dyke in Haveri, SW Finland [PDF]
Bulletin of the Geological Society of Finland, 2022 The E-MORB type Haveri basalt differs from the volcanic arc type rocks in the Tampere belt showing no subduction signature. It is considered to have formed in a marginal basin prior to the volcanic arc. We present here zircon U-Pb dating on two samples.
Jaakko Kara +2 more
doaj +1 more source
Hydrological Processes, Volume 35, Issue 4, April 2021., 2021 The Krycklan Catchment Study (KCS, www.slu.se/Krycklan) is located in the heart of the Boreal region in northern Sweden. The field research infrastructure that started in 1980 consists of a 6790 ha catchment, and currently includes 10 long‐term monitored streams, ca.
Hjalmar Laudon +10 more
wiley +1 more source
The Salittu Formation in southwestern Finland, part I: Structure, age and stratigraphy [PDF]
Bulletin of the Geological Society of Finland, 2016 Because of the relatively low metamorphic grade, low strain and well-preserved early structures in volcanic and volcaniclastic rocks, the Orijärvi triangle (in the center of the larger Orijärvi area) is one of the few locations in the Svecofennian orogen
M. Nironen, I. Mänttäri, M. Väisänen
doaj +1 more source
Evidence of permafrost in the Paleoproterozoic (c. 1.9 Ga) of Central Sweden
Permafrost and Periglacial Processes, Volume 32, Issue 1, Page 169-177, January/March 2021., 2021 Abstract This paper reports on an ice‐wedge pseudomorph that formed and is preserved in metavolcanic host material that was later transformed to metamorphic solid bedrock. It has been dated to 1,895 ± 5 Ma by U–Pb geochronology of zircon in the bedrock, an Early Proterozoic age.
Jef Vandenberghe +4 more
wiley +1 more source