Results 11 to 20 of about 5,043 (208)

Microfossils in metasediments from Prins Karls Forland, western Svalbard

open access: yesPolar Research, 1988
The stratigraphic importance of fossils is never more apparent than in attempts to unravel the complexities of metamorphic terrains. The age and stratigraphic relationships of the thick metasedimentary and metavolcanic succession of Prins Karls Forland, western Svalbard, have been the subject of investigation and debate since the early part of this ...
A H, Knoll, Y, Ohta
openaire   +3 more sources

On the presence of pre-Carboniferous metasediments in the Eastern Belt: A structural view [PDF]

open access: yesBulletin of the Geological Society of Malaysia, 2006
The geological map of Peninsular Malaysia shows that the oldest rocks formation in the Eastern Belt is Carboniferous in age and consist of mainly clastic sedimentary rocks. The rocks had been subjected to low grade regional metamorphism to become metaquartzite and phyllite and generally known as metasediments.
Editor Geological Society of Malaysia
openaire   +2 more sources

Uranium Minerals in the Radlovac Series Metasediments at Mt. Papuk, Croatia [PDF]

open access: yesGeologia Croatica, 2007
Applying a combination of different methods – X-ray diffraction, scanning electron microscopy, gamma-spectroscopy and X-ray spectroscopy, a suite of uranium minerals, meta-torbernite, meta-uranospinite and meta-zeunerite was identified in metasediments of the Radlovac series at the Mt. Papuk area, Croatia. The accessory minerals galenaa, zircon, rutile,
Bermanec, Vladimir   +4 more
core   +7 more sources

Biomarkers of hydrothermally altered, late Archean metasediments from the Abitibi subprovince, Canada.

open access: yes, 2006
Biomarkers of hydrothermally altered, late Archean metasediments from the Abitibi subprovince ...
Gregory T. Ventura (7971881)
core   +6 more sources

Pre-Orogenic Tectonostratigraphic Evolution of the European Distal Margin-Alpine Tethys Transition Zone in High-Pressure Units of the Southwestern Alps

open access: yesGeosciences, 2022
Geological mapping, stratigraphic observations, and U/Pb dating allow reconstructing the pre-orogenic setting of the transition zone between the distal European passive margin and the Alpine Tethys in the southwestern Alps.
Gianni Balestro   +4 more
doaj   +1 more source

Geochemistry, provenance, and tectonic setting of Paleoproterozoic metasedimentary and metavolcanic units of the Estonian Alutaguse region, eastern Fennoscandia [PDF]

open access: yesEstonian Journal of Earth Sciences
This research focuses on the geochemical analysis of Paleoproterozoic metasedimentary and metavolcanic units in the Alutaguse region of northern Estonia, shedding light on the geodynamic evolution during the Svecofennian orogeny in eastern Fennoscandia ...
Juan David Solano-Acosta   +2 more
doaj   +1 more source

The Araxá Group in the South-Southwest Region of the Goiás State [PDF]

open access: yesGeologia USP. Série Científica, 2013
In the S – SW region of Goiás State, Brazil, the Araxá Group is constituted of a metasedimentary sequence containing schistoseand gneissic (garnet-biotite-quartz schists, feldspatic garnet-biotite-quartz schists, garnet-biotite-quartz paragneisses,with ...
Guillermo Rafael Beltran Navarro   +2 more
doaj   +1 more source

SEDIMENTOLOGICAL CONSIDERATIONS ON THE LITHOCHRONOSTRATIGRAPHIC DISCONTINUITY ESTABLISHED BETWEEN THE SANSIKWA SUB-GROUP AND THE MAYUMBIAN GROUP IN THE SECTOR BETWEEN MPETE AND NDWIZI (CENTRAL KONGO, DR CONGO) [PDF]

open access: yesGeological Behavior
East of the Matadi square degree, the transition from the metasedimentary protoliths of the Mayumbian Group to the clayey-sandy deposits of the Sansikwa Subgroup recalls a similar sedimentological history but distinct in their paleoenvironmental ...
Mukeba C.L   +7 more
doaj   +1 more source

Evolution of migmatitic granulite complexes: Implications from Lapland Granulite Belt, Part I: Metamorphic geology [PDF]

open access: yesBulletin of the Geological Society of Finland, 2006
The Palaeoproterozoic Lapland granulite belt was juxtaposed between Archaean and Proterozoic terrains in the NE part of the Fennoscandian Shield concurrently with the accretion of Svecofennian arc complexes at ~1.9 Ga.
P. Tuisku, P. Mikkola, H. Huhma
doaj   +1 more source

Establishing Provenance from Highly Impoverished Heavy Mineral Suites: Detrital Apatite and Zircon Geochronology of Central North Sea Triassic Sandstones

open access: yesGeosciences, 2022
A study of Triassic sandstones in the central North Sea, UK, has shown that combined detrital zircon and apatite geochronology and apatite trace element analysis is a powerful tool for reconstructing provenance for sandstones with diagenetically ...
Iain P. Greig   +3 more
doaj   +1 more source

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