Results 101 to 110 of about 32,393 (253)

Textural variations in Neogene pelagic carbonate ooze at DSDP Site 593, southern Tasman Sea, and their paleoceanographic implications [PDF]

, 2004
Changes in Neogene sediment texture in pelagic carbonate-rich oozes on the Challenger Plateau, southern Tasman Sea, are used to infer changes in depositional paleocurrent velocities.
Backman J., Bennett A. F., Berger W. H., Berggren W. A., Boersma A., Bohrmann G., Carter L., Carter R. M., Caulet J‐P., Crundwell M. P., Drewry D. J., Elmstrom K. M., Folk R. L., Gardner J. V., Gardner J. V., Gorsline D. S., Head P. S., House M. A., Howe J. A., Kennett J. P., Lohman W. H., Lyle M., Marshall P., Martínez J. I., McCave I. N., Morgans H. E. G., Mycke B., Nelson C. S., Nelson C. S., Nelson C. S., Nelson C. S., Nelson C. S., Oser R. K., Raffi I., Rio D., Robert C., Schlich R., Shackleton N. J., Shackleton N. J., Stanton B. R., Stein R., Sutherland F. L., Takayama T., Varney M., Wood R. A., Wright J. D.   +45 more
core   +2 more sources

Bed‐scale quantitative discrimination of hyperpycnites from intrabasinal turbidites—Results from a channelised slope system in the Upper Carboniferous Westward Ho! Formation, United Kingdom

Sedimentology, EarlyView.
ABSTRACT Features considered indicative of hyperpycnites and intrabasinal turbidites overlap. Outcrop study presented here suggests that the Westward Ho! Formation forms an 800 m high deepwater‐slope system dominated by hyperpycnites. Taking this unit, and other successions where hyperpycnites have been described, as having been deposited solely from ...
Tony Reynolds
wiley   +1 more source

Effects of population density on the sediment mixing induced by the gallery-diffusor Hediste (Nereis) diversicolor O.F. Müller, 1776 [PDF]

, 2006
The aim of this work was to quantify the intensity of sediment mixing induced by the gallery-diffusor (functional bioturbation group) Hediste diversicolor as a function of density, using particles tracers (luminophores).
Duport, Eric, Gilbert, Franck, Stora, Georges, Tremblay, Pierre   +3 more
core   +6 more sources

Microplastic Dynamics in Sediment Layers of Two Ramsar‐Designated Wetlands

Water and Environment Journal, EarlyView.
ABSTRACT Little is known about the vertical and spatial dynamics of microplastics in relation to hydrology and land use, particularly in African context. This study aimed to assess the abundance, type, colour and vertical distribution of microplastics in sediment from two Ramsar‐designated wetlands, the Makuleke and Nylsvley. Sediment core samples were
Nelisiwe Ngomane, Linton F. Munyai, Ross N. Cuthbert, Pule Mpopetsi, Farai Dondofema, Rabelani Mudzielwana, Philippa Huchzermeyer, Tatenda Dalu   +7 more
wiley   +1 more source

On the Kimmeridgian (Jurassic) succession of the Normandy coast, northern France [PDF]

, 2005
Kimmeridgian rocks crop out on the Normandy coast north and south of the Seine Estuary at Le Havre in a series of small foreshore and cliff exposures separated by beach deposits and landslips.
Gallois, R.W.
core   +1 more source

Engineering the Cambrian explosion: the earliest bioturbators as ecosystem engineers [PDF]

, 2017
By applying modern biological criteria to trace fossil types and assessing burrow morphology, complexity, depth, potential burrow function and the likelihood of bioirrigation, we assign ecosystem engineering impact (EEI) values to the key ichnotaxa in ...
Callow, Richard H. T., Callow, Richard H.T., Herringshaw, Liam G., McIlroy, Duncan   +3 more
core   +1 more source

Megafauna: the ignored bioturbators

Marine Ecology Progress Series
Bioturbation is a process caused by animals that move particles and water in sediments. This influences gas and solute exchange, and organic matter concentrations through the sediment column. Bioturbators play an important role in biogeochemistry and ecosystem functioning.
AL Vallim, S Schenone, SF Thrush
openaire   +1 more source

Effects of land management on soil carbon storage in the Brazilian Amazon

Agrosystems, Geosciences &Environment, Volume 9, Issue 2, June 2026.
Abstract This study assessed the influence of land use on soil physical and chemical properties and evaluated machine learning (ML) models for predicting soil organic carbon (SOC) content and stocks in the top 0–30 cm layer across selected sites in the Brazilian Amazon. A total of 649 georeferenced samples of surface soil were analyzed for soil texture,
Gizachew Ayalew Tiruneh, Ciro Abbud Righi, Jefferson Lordello Polizel, Vinicius Gonçalves, Carlos Rodrigues Pereira   +4 more
wiley   +1 more source

Surface lebensspuren and their tracemakers in Arctic fjords of Spitsbergen: Patterns, diversity, and environmental controls [PDF]

Polish Polar Research
This study presents a comprehensive analysis of epibenthic lebensspuren, i.e., biogenic surface traces, and their tracemakers in the fjords of Svalbard.
Kajetan Deja, Alfred Uchman
doaj   +1 more source

Subterranean environments contribute to three‐quarters of classified ecosystem services

Biological Reviews, Volume 101, Issue 3, Page 1582-1605, June 2026.
ABSTRACT Beneath the Earth's surface lies a network of interconnected caves, voids, and systems of fissures forming in rocks of sedimentary, igneous, or metamorphic origin. Although largely inaccessible to humans, this hidden realm supports and regulates services critical to ecological health and human well‐being.
Stefano Mammola, David Brankovits, Tiziana Di Lorenzo, Isabel R. Amorim, Raluca Ioana Bancila, Adrià Bellvert, Enrico Bernard, Anna Blomberg, Paulo A.V. Borges, Martina Cappelletti, Rodrigo Lopes Ferreira, Rosalina Gabriel, Diana M. P. Galassi, Laura Garzoli, Vasilis Gerovasileiou, Grant C. Hose, Kathryn L. Korbel, Simone Martino, Ana Z Miller, Nataša Mori, Veronica Nanni, Giuseppe Nicolosi, Mattia Saccò, Troy S. Sakihara, Marconi Souza Silva, Anne E. Tamalavage, Maja Zagmajster, Efraín Chávez, Christian Griebler, Pedro Cardoso, Alejandro Martínez   +30 more
wiley   +1 more source