Deep-sea mining on the Rio Grande Rise (Southwestern Atlantic): A review on environmental baseline, ecosystem services and potential impacts

F Montserrat, M Guilhon, PVF Corrêa, NM Bergo… - Deep Sea Research …, 2019 - Elsevier
Abstract The Rio Grande Rise is an extensive seamount region in the South-western
Atlantic, with potential for deep-sea mining activities in the future. Such activities pose …

[HTML][HTML] Enhanced ocean oxygenation during Cenozoic warm periods

A Auderset, S Moretti, B Taphorn, PR Ebner, E Kast… - Nature, 2022 - nature.com
Dissolved oxygen (O2) is essential for most ocean ecosystems, fuelling organisms'
respiration and facilitating the cycling of carbon and nutrients. Oxygen measurements have …

The enigma of Oligocene climate and global surface temperature evolution

CL O'Brien, M Huber, E Thomas… - Proceedings of the …, 2020 - National Acad Sciences
Falling atmospheric CO2 levels led to cooling through the Eocene and the expansion of
Antarctic ice sheets close to their modern size near the beginning of the Oligocene, a period …

Genesis and evolution of ferromanganese crusts from the summit of Rio Grande Rise, Southwest Atlantic Ocean

M Benites, JR Hein, K Mizell, T Blackburn, L Jovane - Minerals, 2020 - mdpi.com
The Rio Grande Rise (RGR) is a large elevation in the Atlantic Ocean and known to host
potential mineral resources of ferromanganese crusts (Fe–Mn), but no investigation into their …

Stratigraphic architecture and depositional–diagenetic evolution of Oligocene–Miocene carbonate–evaporite platform in the southern margin of the Neo-Tethys Ocean …

Z Mohammadi, H Mehrabi, S Gharechelou… - Journal of Asian Earth …, 2022 - Elsevier
Abstract The Oligocene–Miocene (OM) depositional sequences (Asmari Formation) are
marked by remarkable changes in thickness, lithology, depositional facies characteristics …

Miocene phosphatization of rocks from the summit of Rio Grande Rise, Southwest Atlantic Ocean

M Benites, JR Hein, K Mizell… - Paleoceanography and …, 2021 - Wiley Online Library
Marine phosphorites are an important part of the oceanic phosphorus cycle and are related
to the effects of long‐term global climate changes. We use petrography, mineralogy, rare …

[HTML][HTML] Significant transient pCO2 perturbation at the New Zealand Oligocene-Miocene transition recorded by fossil plant stomata

M Steinthorsdottir, V Vajda, M Pole - Palaeogeography, Palaeoclimatology …, 2019 - Elsevier
The reorganisation of Earth's climate system from the Oligocene to the Miocene was
influenced by complex interactions between Tethyan tectonics, orbital parameters …

Controls on the chemical composition of ferromanganese crusts from deep-water to the summit of the Rio Grande Rise, South Atlantic Ocean

M Benites, J González, J Hein, E Marino, J Reyes… - Marine Geology, 2023 - Elsevier
Ferromanganese (FeMn) crusts at the summit of Rio Grande Rise (RGR)(625–850 m) in the
southwest Atlantic Ocean show two contrasting generations, an older, typically thicker one …

Adaptations of Coccolithophore Size to Selective Pressures During the Oligocene to Early Miocene High CO2 World

J Guitián, T Dunkley Jones… - Paleoceanography …, 2020 - Wiley Online Library
Culture experiments with coccolithophore algae—the dominant group of marine calcifying
phytoplankton—imply a strong sensitivity in growth rate, degree of cellular calcification, and …

Exploring subaqueous bedforms and its relation to hydrodynamics in the Rio Grande Rise, Southwestern Atlantic

GO Del Rey, PW Souza-Neto, LC Vieira, AC Del Rey… - Marine Geology, 2024 - Elsevier
This study investigates the interplay between hydrodynamics, sediment dynamics, and
topography in the Rio Grande Rise (RGR) area. It addresses bedforms found in five different …