Results 21 to 30 of about 5,596 (229)

Geochemistry of metasedimentary rocks from the Eastern Pyrenees (Iberian Peninsula): Implications for correlation of Ediacaran terranes along the Gondwanan margin

open access: yes, 2023
The North African margin of Gondwana formed by subduction and accretion during Ediacaran to Cambrian times. Sections of this active margin were incorporated during the late Paleozoic to the Variscan and Appalachian orogens.
J.A. Proenza   +15 more
core   +1 more source

Parameterization and quantification of recharge in crystalline fractured bedrocks in Galicia-Costa (NW Spain) [PDF]

open access: yesHydrology and Earth System Sciences, 2012
Quantifying groundwater recharge in crystalline rocks presents great difficulties due to the high heterogeneity of the underground medium (mainly, due to heterogeneity in fracture network, which determines hydraulic parameters of the bedrock like ...
J. R. Raposo, J. Molinero, J. Dafonte
doaj   +1 more source

PETROGRAPHY AND GEOCHEMISTRY OF METASEDIMENTS FROM BUGAJI, PART OF MALUMFASHI SHEET 79 NE, KANO STATE, NORTHWESTERN NIGERIA [PDF]

open access: yesGeological Behavior, 2023
This research is aimed at determining the protolith of metasediments that underpin the geology of Bugaji region of Kano State. The study area was mapped systematically and the lithologies encountered include phyllite, undifferentiated schist, quartzo ...
Abdullah Musa Ali   +1 more
doaj   +1 more source

The Stability of Metasedimentary Rock in Ranau, Sabah, Malaysia

open access: yesIndonesian Journal on Geoscience, 2018
DOI: 10.17014/ijog.5.1.23-31The aim of this paper is to determine the stability of slopes and to propose preliminary rock cut slope protection and stabilization measures for Paleocene to Middle Eocene Trusmadi Formation along Marakau-Kigiok in Ranau, Sabah, Malaysia. The rock of Trusmadi Formation is slightly metamorphosed and dominated by interbeds of
Ismail Abd Rahim, Baba Musta
openaire   +3 more sources

The Changing Character of Carbon in Fluids with Pressure

open access: yesGeophysical Monograph Series, Page 259-269., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Dimitri Sverjensky   +2 more
wiley  

+1 more source

Stratigraphy of the central parts of the Palaeoproterozoic Tampere Schist Belt, southern Finland: review and revision [PDF]

open access: yesBulletin of the Geological Society of Finland, 1998
The arc-type Palaeoproterozoic volcanic-sedimentary Tampere Schist Belt (TSB), close to the centre of the Svecofennian Orogen, comprises an E-W-striking major synform in its central parts.
Y. Kähkönen
doaj   +1 more source

Geology and Lithogeochemistry of the Supracrustal Sequence and Interlayered Metabasites of NE Santos Dumont Region (MG) [PDF]

open access: yesAnuário do Instituto de Geociências, 2017
The region near Santos Dumont town consists of a sequence of interlayered metabasic rocks and supracrustal gneisses. Two lithological units were individualized based on geological-structural mapping (1:50,000), petrography and lithogeochemistry: a ...
Renata Hiraga   +5 more
doaj   +1 more source

A reactive assimilation model for regional-scale cordierite-bearing granitoids: geochemical evidence from the Late Variscan granites of the Central Iberian Zone, Spain [PDF]

open access: yes, 2008
Regional scale biotite and cordierite-bearing granites (s.l.) in the Variscan of the Central Iberian Zone (CIZ) are spatially closely associated with cordierite-rich nebulites and cordierite-bearing two-mica granites, and with cordierite-rich high grade ...
Ellam, R.M.   +6 more
core   +1 more source

Supplementary data for “Provenance analysis of early Neoproterozoic metasedimentary rocks in western Central Tianshan Block and paleogeographical reconstruction”

open access: yes, 2022
Supplementary data for “Provenance analysis of early Neoproterozoic metasedimentary rocks in western Central Tianshan Block and paleogeographical ...
Wang, L
core   +2 more sources

Precambrian crustal evolution and Cretaceous–Palaeogene faulting in West Greenland: Zircon geochronology from the Kangaatsiaq–Qasigiannguit region, the northern part of the 1.9–1.8 Ga Nagssugtoqidian orogen, West Greenland [PDF]

open access: yesGeological Survey of Denmark and Greenland Bulletin, 2006
The Kangaatsiaq–Qasigiannguit region in the northern part of the Palaeoproterozoic Nagssugtoqidian orogen of West Greenland consists of poly-deformed orthogneisses and minor occurrences of interleaved, discontinuous supracrustal belts. Laser ablation ICP-
Conelly, James N., Thrane, Kristine
doaj  

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