Conservation of geosites as a tool to protect geoheritage: the inventory of Ceará Central Domain, Borborema Province - NE/Brazil [PDF]
, 2017 The Ceará Central Domain, in the northern Borborema Province/NE Brazil, encompasses important geological records (geosites) which allow understanding a relevant period of the Earth’s evolution, mainly associated to Neoproterozoic Brazilian/Pan-African ...
ALMEIDA AR +60 more
core +3 more sources
U-Pb and Hf isotopic study of detrital zircons from the Wulashan khondalites: Constraints on the evolution of the Ordos Terrane, Western Block of the North China Craton [PDF]
, 2006 Detrital zircons from the Wulashan khondalites in the Ordos Terrane, western block of the North China Craton, give U-Pb ages between 1.84 and 2.32 Ga, showing that their provenance was dominated by Paleoproterozoic rocks, much younger than those exposed ...
Luo, Y +6 more
core +1 more source
Re-Os age of molybdenite from the Hannivka deposit, Kryvyi Rih structure, Ukrainian Shield
Мінеральні ресурси УкраїниThis article presents the results of isotopic dating of molybdenite using the Re–Os method to determine the age of mineralization at the Hannivka deposit.
Yu. Ye. Khomych +6 more
doaj +1 more source
Paleoproterozoic post-orogenic magmatism in southern Finland; geochemical, geochronological and Sr-Nd isotopic constraints on origin and magmatic evolution [PDF]
Bulletin of the Geological Society of FinlandFifteen post-orogenic, basic to acidic High-Barium-Strontium (HiBaSr) intrusions of shoshonitic affinity have been recognized in central and southern Finland.
Oliver Teräs +5 more
doaj +1 more source
Journal of Petroleum Geology, Volume 49, Issue 2, Page 433-447, April 2026.ABSTRACT In the Recôncavo Basin, Northeast of Brazil, mud diapirs have been reported for decades, but their role within the basin's petroleum system remains poorly constrained. Here, we combine 2D seismic interpretation, field observations, and organic geochemical analyses of rocks and oil seeps to investigate the relationship between diapirism and ...
Cora Mattos +3 more
wiley +1 more source
An iron shuttle for deepwater silica in Late Archean and early Paleoproterozoic iron formation [PDF]
, 2009 Iron formations are typically thinly bedded or laminated sedimentary rocks containing 15% or more of iron and a large proportion of silica (commonly > 40%). In the ca.
Fischer, Woodward W., Knoll, Andrew H.
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Геохімія техногенезу, 2019 The paper presents the results of mineralogical, petrographic, electron microscopy, isotopic and X-ray structural studies of Paleoprotero-zoic high-carbon schungite-like rocks of the Mlynkivska area (Pravoberezhnyi district of the Kryvyi Rih-Kremenchuk ...
Yatsenko V. +5 more
doaj +1 more source
Paleoproterozoic evolution of Fennoscandia and Greenland
Episodes, 2008 The Paleoproterozoic evolution of Fennoscandia and Greenland can be divided into major rifting and orogenic stages. The Paleoproterozoic rifting of Fennoscandia started with 2.505‐2.1 Ga, multiphase, southwest-prograding, intraplate rifting. Both Fennoscandia and Greenland experienced 2.1‐ 2.04 Ga drifting and separation of their Archean cratons by ...
Raimo Lahtinen +2 more
openaire +2 more sources
Terra Nova, Volume 38, Issue 2, Page 77-86, April 2026.ABSTRACT Deep crustal fragments and structural lineaments identified through satellite gravity data provide evidence for the extension of the reworked ancient basement of the Central African Block into the northern São Francisco Craton and southern Borborema Province.
Douglas Teixeira Martins +3 more
wiley +1 more source
The Mahogany Peaks fault, a late Cretaceous-Paleocene(?) normal fault in the hinterland of the Sevier orogen [PDF]
, 1998 The contact separating Ordovician rocks from the underlying lower part of the Raft River Mountains sequence, northwestern Utah, is reinterpreted as a large-displacement low-angle normal fault, the Mahogany Peaks fault, that excised 4-5 km of structural ...
Hanson, Lori M. +5 more
core +1 more source