Results 81 to 90 of about 123,040 (111)

EARLY PRECAMBRIAN CRUSTAL EVOLUTION OF THE BELOMORIAN AND TRANS-NORTH CHINA OROGENS AND SUPERCONTINENTS RECONSTRUCTION

open access: yesГеодинамика и тектонофизика, 2017
Comparative analysis of the crustal evolution of the Early Precambrian Belomorian and Trans-North China orogens (Fig. 1) has shown [Slabunov et al., 2015] that: Both belts were formed by the superposition of two Precambrian orogenies.
A. I. Slabunov   +4 more
doaj   +1 more source

A seismic study of the mid- and lower-crust beneath the sea of Bothnia: BABEL line 1 [PDF]

open access: yes, 1994
In the Autumn of 1989, Durham University took part in the BABEL Project, a collaboration of scientists from five nations recording wide angle and normal incidence seismic data in the Baltic Shield.
Graham, Daniel P.
core  

The crystalline basement of Estonia: rock complexes of the Palaeoproterozoic Orosirian and Statherian and Mesoproterozoic Calymmian periods, and regional correlations [PDF]

open access: yesEstonian Journal of Earth Sciences, 2009
New data on the Fennoscandian Shield and the Baltic area suggest a need for reinterpretation of the stratigraphy of Estonian Precambrian rock complexes.
Kirs, Juho   +7 more
doaj  

Early Precambrian Eclogites of the Belomorian Province, Fennoscandian Shield [PDF]

open access: yes, 2019
Early Precambrian eclogites are widespread in the Belomorian Province of the Fennoscandian shield. There are three points of view on the their age: 1) Archean and Paleoproterozoic; 2) solely Mesoarchean; 3) solely Paleoproterozoic. The goal of this field
Sibelev, O S   +11 more
core  

Timing of magmatism and mineralisation at Falun, a major base metal sulphide deposit in the Fennoscandian Shield, Sweden

open access: yes, 2015
U-Pb (zircon) ion probe geochronology on key lithologies at the Palaeoproterozoic Falun Zn-Pb-Cu-(Au-Ag) sulphide deposit in the south-western part of the Fennoscandian Shield has been carried out.
Stephens, Michael B.   +3 more
core   +2 more sources

Long-Lived Mantle Plume and Polyphase Evolution of Palaeoproterozoic PGE Intrusions in the Fennoscandian Shield

open access: yes, 2019
The NE Fennoscandian Shield comprises the Northern Belt in Finland and the Southern Belt in Karelia. They host mafic-ultramafic layered Cu-Ni-Cr and Pt-Pd-bearing intrusions.
Aleksey Korchagin   +8 more
core   +1 more source

Precambrian geodynamics and ore formation [Elektronisk resurs] : the Fennoscandian Shield

open access: yes, 2006
The complex geodynamic evolution of the Fennoscandian Shield from 2.06 to 1.78 Ga involved rapid accretion of island arcs and several microcontinent-continent collisions in a complex array of orogens.
Arndt, Nicholas   +7 more
core  

Electrical Conductivity of the Lithosphere- Implications for the Evolution of the Fennoscandian Shield

open access: yes, 1996
The electromagnetic induction research on the deep structure in the Fennoscandian Shield and the airborne surveys in Finland have provided a globally unique electromagnetic data set to estimate lithospheric conductivity.
Toivo Korja
core  

Timing of magmatism and mineralisation at Falun, a major base metal sulphide deposit in the Fennoscandian Shield, Sweden [Elektronisk resurs]

open access: yes, 2015
U-Pb (zircon) ion probe geochronology on key lithologies at the Palaeoproterozoic Falun Zn-Pb-Cu-(Au-Ag) sulphide deposit in the south-western part of the Fennoscandian Shield has been carried out.
Ripa, Magnus,   +3 more
core  

Strike-slip faulting and hydrothermal alteration in a Proterozoic rapakivi batholith: implications for reservoir formation and geothermal exploration in crystalline cratons—Part 1

open access: yesGeothermal Energy
Ancient crystalline basement cratons are traditionally considered challenging geothermal targets due to their low heat flow, limited porosity, and low matrix permeability.
Nicklas Nordbäck   +8 more
doaj   +1 more source

Home - About - Disclaimer - Privacy