Results 81 to 90 of about 4,997 (224)
New Zealand Journal of Marine and Freshwater Research, Volume 59, Issue 5, Page 1496-1529, December 2025.ABSTRACT Expansion of extractive industries to deep‐sea environments will lead to increased stresses on seafloor ecosystems. We examined changes in environmental parameters following direct and indirect experimental benthic disturbance using a modified plough on the Chatham Rise (∼450 m water depth), Aotearoa/New Zealand. Measurements included sediment
Rachel Hale +9 more
wiley +1 more source
Copper-nickel-rich, amalgamated ferromanganese crust-nodule deposits from Shatsky Rise, NW Pacific [PDF]
, 2012 A unique set of ferromanganese crusts and nodules collected from Shatsky Rise (SR), NW Pacific, were analyzed for mineralogical and chemical compositions, and dated using Be isotopes and cobalt chronometry.
Andel +66 more
core +1 more source
The Depositional Record, Volume 11, Issue 5, Page 1433-1450, November 2025.The data and interpretations of this study are used to test the proposal by Goldhammer et al. that a ‘stratigraphy of early diagenesis’ is operational in carbonate depositional systems. What this means is that distinct mineralogical and geochemical changes to rock and sediment occur associated with external controls, such as the rise and fall of sea ...
Donald F. McNeill, Peter K. Swart
wiley +1 more source
Papers in Palaeontology, Volume 11, Issue 5, September/October 2025.Abstract The Australian Cambrian stratigraphic record is one of the most complete for any continent. However, there is a general division, with older Cambrian rocks in South Australia (predominantly Terreneuvian, Stage 2 to Miaolingian, Wuliuan) and younger rocks in northern Australia (mostly latest Series 2, Stage 4 and younger), with minimal ...
Marissa J. Betts +5 more
wiley +1 more source
Литосфера, 2017 This publication provides an overview of the rare earth elements systematics in Pre-Ordovician phosphorites from various regions of the world. Based on the analysis of significant data bank it shows that currently there are no universal parameters ...
A. V. Maslov
doaj +2 more sources
Phosphate rock: methods of preparing and application [PDF]
, 2014 The results of research for improving physical-chemical and agrochemical properties of phosphate flour, obtained by phosphate various deposits enrichment, by increasing its grinding fineness, as well as mechanical activation in the presence of various ...
Goncharik, I. I. +4 more
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Early diagenesis of redox-sensitive trace metals in the Peru upwelling area – Response to ENSO-related oxygen fluctuations in the water column [PDF]
, 2011 Pore water and solid phase data for redox-sensitive metals (Mn, Fe, V, Mo and U) were collected on a transect across the Peru upwelling area (11°S) at water depths between 78 and 2025 m and bottom water oxygen concentrations ranging from ~0 to 93 µM.
Hensen, Christian +5 more
core +1 more source
The last common bilaterian ancestor [PDF]
, 2002 Many regulatory genes appear to be utilized in at least superficially similar ways in the development of particular body parts in Drosophila and in chordates.
Davidson, Eric H., Erwin, Douglas H.
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A normalised seawater strontium isotope curve: possible implications for Neoproterozoic-Cambrian weathering rates and the further oxygenation of the Earth [PDF]
, 2007 The strontium isotope composition of seawater is strongly influenced on geological time scales by changes in the rates of continental weathering relative to ocean crust alteration.
Shields, GA
core +1 more source
Fossils from the lower globigerina limestone formation at Wardija, Gozo (Miocene, Aquitanian), with a description of some new pteropod species (Mollusca, Gastropoda) [PDF]
, 2003 Phosphatised fossil assemblages of four samples from the Lower Globigerina Limestone Formation at Wardija (SE Gozo, Malta) were analysed, with special emphasis on holoplanktonic molluscs (Gastropoda: Heteropoda and Pteropoda). The upper sample (sample 4)
Janssen, Arie W.
core