Results 51 to 60 of about 91,473 (196)

Active metal-cycling microbial communities of polymetallic nodules from the Eastern Pacific Ocean [PDF]

, 2020
The rising demand for minerals and metals is encouraging the great international interest for alternative sources in the deep sea. Deposits of deep-sea polymetallic nodules attracted the attention for a long time because they are rich in nickel, copper ...
Janßen, S., Otte, Julia M., Wenzhöfer, Frank, Molari, Massimiliano, Volz, Jessica   +4 more
core   +1 more source

The Paralicella Paradox: Broadly Distributed Lineages Without Clear Geographic Partitioning in Paralicella tenuipes and the Paralicella caperesca Species Complex

Zoologica Scripta, EarlyView.
ABSTRACT Abyssal environments (3000–6000 m ocean depth) are often presumed to promote broad genetic connectivity across ocean basins due to their vast spatial extent, apparent environmental homogeneity and few barriers to gene flow. While some deep‐sea taxa conform to this expectation, growing evidence shows that marked genetic structure can persist ...
Matilda G. M. Lamb, Jennifer A. Wainwright, Yakufu Niyazi, Alan J. Jamieson, Brett C. Gonzalez   +4 more
wiley   +1 more source

Hybrid Mining of Rare-Earth Elements-Rich Mud and Polymetallic Nodules by Air-Lift Pump in Deep Sea around Minamitorishima Island

Journal of MMIJ
REE-rich mud and polymetallic nodules located under the seabed at water depth of 5500–5700 m around Minamitorishima island are highly attractive for exploration and development, given the recent paradigm shift towards renewable energies based on green ...
Yoshiyuki SHIMIZU, Masatoshi SUGIHARA, Yutaro TAKAYA, Koichiro FUJINAGA, Kentaro NAKAMURA, Yasuhiro KATO   +5 more
doaj   +1 more source

The Enrichment Regularity of Rare Earth Elements and Resource Characteristics in Polymetallic Nodules/Crusts

, 2011
Polymetallic nodules/crusts are one of the most important mineral deposits in the ocean, in which iron, manganese, copper, cobalt, nickel and other metals are rich, and rare earth elements are rich, too.
Zhen Guo Zhang, Chang Shui Liu, Ying Zhang, Peng Zhang, Lian Feng Gao   +4 more
core   +1 more source

Metabarcoding as a Tool in Characterizing Nordic Deep‐Sea and Arctic Benthic Ecosystems

Environmental DNA, Volume 8, Issue 6, November‐December 2026.
Multi‐marker sediment eDNA metabarcoding robustly discriminates benthic habitats across the Nordic Seas and Arctic Mid‐Ocean Ridge. Complementary 18S rDNA and COI performance enhances taxonomic resolution and supports standardized integration of metabarcoding into future deep‐sea biodiversity surveys.
Jon Thomassen Hestetun, Thomas G. Dahlgren, Pedro Ribeiro, Nadia Aarab, Miriam Brandt   +4 more
wiley   +1 more source

Morphological and mineralogical characteristics of polymetallic nodules from the Clarion-Clipperton zone on the Pacific Ocean -preliminary results. [PDF]

, 2019
Manganese nodules, known also as polymetallic nodules, from the Clarion-Clipperton Zone on the Pacific Ocean were examined by the electron microprobe method to determine their chemical and mineralogical compositions.
Kozłowska-Roman, Agata, Mikulski, Stanisław Z.   +1 more
core   +1 more source

Selective extraction of metals from polymetallic nodules of Central Indian Ocean Basin through chemical partitioning

Discover Geoscience
Polymetallic nodules occurring on the seabeds of the world’s oceans contain economically important metals such as Cu, Co, Ni, Pb, and Zn, primarily in the form of oxides and hydroxides. These nodules mainly consist of two intimately mixed mineral phases:
Saurabh Kumar Barman, Sanjay Kumar Tiwari, Manvendra Singh Chauhan, Vijayendra Pratap Dheeraj   +3 more
doaj   +1 more source

Mining of deep-seabed nodules using a Coandă-effect-based collector

Results in Engineering, 2023
We present an effective design of a hydraulic, polymetallic nodule collector, which fundamentally depends on the Coandă effect in harvesting nodules. The design was first developed based on 2D numerical simulations conducted using a computational fluid ...
Said Alhaddad, Dhruv Mehta, Rudy Helmons
doaj   +1 more source

Brine Pool Microbes Enrich Metalliferous Sediments in Salt Giant Basins

AGU Advances, Volume 7, Issue 6, September 2026.
Abstract We report the discovery of an extinct deep‐sea brine pool in the Red Sea's Hume Deep, providing evidence that rift‐shoulder pools are ephemeral on millennial timescales, and that the microbially‐enriched metalliferous deposits produced during the pool's active phase persist into the stratigraphic record.
Morgan I. Chakraborty, Hannah Shernisky, Clément G. L. Pollier, Amanda M. Oehlert, Arash Sharifi, Ali Pourmand, Bolton J. Howes, Benjamin Minch, Mohammad Moniruzzaman, Larissa Frühe, Mattie Rodrigue, Sam J. Purkis   +11 more
wiley   +1 more source

Cautionary Tales for Science‐Based Policy in Deep‐Sea Mining Governance

Global Policy, Volume 17, Issue 4, Page 764-772, September 2026.
ABSTRACT This article examines how low‐certainty scientific claims permeate high‐stakes policy debates before rigorous validation. Using deep‐sea mining governance as a focal domain, the study traces high‐visibility narratives, including the “dark oxygen” hypothesis, radioactive risks of polymetallic nodules, projected impacts of sediment plume ...
Lucía Villar‐Muñoz
wiley   +1 more source