Unraveling sedimentary precursors and metal enrichment of high-grade metamorphosed manganese-rich rocks from the Borborema Province, northeastern Brazil

FH dos Santos, W da Silva Amaral, K Konhauser… - Ore Geology …, 2021 - Elsevier
Abstract The Paleoproterozoic Lagoa do Riacho manganese deposit in the Borborema
Province is central to unravelling the genesis of Paleoproterozoic manganese deposits …

Paleoproterozoic crustal evolution of the northern Borborema Province, NE Brazil: Insights from high-grade metamorphic rocks of the Canindé do Ceará Complex

W da Silva Amaral, FH dos Santos, LRC Braga… - Precambrian …, 2023 - Elsevier
Archean to Paleoproterozoic crustal segments are widely recognized as basement inliers
within the Neoproterozoic orogenic belts of the Pan-African/Brasiliano orogeny. For …

After the Pandemic: experimental governance and the foundational economy

K Morgan - Symphonya. Emerging Issues in Management, 2021 - symphonya.unicusano.it
The purpose of this article is to outline the convergence–an intellectual as well as a political
convergence–of two concepts that will play a critically important role in fashioning a more …

Rhyacian‐Orosirian Khondalite Belt in the Borborema Province (NE Brazil): An active margin setting based on U–Pb zircon and monazite constraints

RL Muniz, TJS dos Santos, EL Dantas… - Geological …, 2022 - Wiley Online Library
Khondalite belts are of special importance is delimiting old suture zones and in
palaeocontinental reconstruction of Precambrian terrains. In the South‐American Platform …

Zircon U–Pb geochronology of manganese-rich rocks from the Borborema Province, Northeast Brazil: adding a new piece to the global inventory of Paleoproterozoic …

FH dos Santos, W da Silva Amaral, DT Martins… - Mineralium …, 2023 - Springer
Abstract The Borborema Province hosts several Mn-rich metasedimentary sequences,
containing up to 40 wt% MnO (total). These sequences are composed of Mn oxide and Mn …

[PDF][PDF] Lithogeochemistry and zircon U-Pb geochronology of the Granjeiro Complex and associated units, Curral Novo do Piauí, SW-Borborema Province, Brazil …

JAR Vale, LVS Monteiro, CF Basto, VC Medeiros… - 2023 - rigeo.sgb.gov.br
The Curral Novo Iron District, located in the center-east of the state of Piauí, is hosted in the
Granjeiro Complex in its southwestern section, located in the Rio Piranhas-Seridó Domain …

Paleoproterozoic manganese oxide precipitation in oxic seawater surface and reductive enrichment in anoxic seafloor

FH dos Santos, W da Silva Amaral, E Chi-Fru… - Chemical …, 2022 - Elsevier
Accelerated precipitation of Mn-rich rocks in the early Paleoproterozoic ocean is considered
to reflect the irreversible rise of oxygen in the atmosphere during the Great Oxidation Event …

[PDF][PDF] New zircon U-Pb dating and review of geological and geochronological data with implications for lithostratigraphy and crustal evolution of North Borborema …

TRG Pinéo, FG Costa, CF Basto, JB Rodrigues… - 2023 - rigeo.sgb.gov.br
The northern portion of the Borborema Province, located north of the Patos Shear Zone
(northeast of Brazil) is formed by litho-stratigraphic units dating from the Archean to the …

A tectonic model for the juxtaposition of granulite-and amphibolite-facies rocks in the Eburnean orogenic belt (Sassandra-Cavally domain, Côte d'Ivoire)

AY Koffi, L Baratoux, P Pitra… - BSGF-Earth …, 2023 - pubs.geoscienceworld.org
Abstract The Sassandra-Cavally (SASCA) domain (SW Côte d'Ivoire) marks the transition
between the Archean Kenema-Man craton and the Paleoproterozoic (Rhyacian) Baoule …

Litoestratigrafia e aspectos metalogenéticos do Complexo Máfico-Ultramáfico Estratiforme de Tucunduba, Província Borborema, Ceará–Brasil

DHA Cavalcante, CV Parente… - Geologia USP. Série …, 2022 - revistas.usp.br
O Complexo Máfico-Ultramáfico Estratiforme de Tucunduba (CMUET) compreende uma
intrusão acamadada com geometria elipsoidal, com eixo maior apresentando direção …