Results 291 to 300 of about 213,060 (361)

Combining morphological and molecular data to study past foraminiferal communities from a temperate coastal sediment core

Boreas, EarlyView.
This paper presents the results of a dual approach for assessing fossil benthic foraminiferal communities using both traditional morphology‐based analyses and sedimentary ancient DNA (sedaDNA) metabarcoding. The main objectives are to test the feasibility of sedaDNA analyses to assess foraminiferal biodiversity in temperate shelf sediments (Le Croisic,
Meryem Mojtahid, Magali Schweizer, Damien Le Moigne, Gwendoline Grégoire, Anne  Murat, Isabelle Poirier, Agnès Baltzer, Inge van Dijk, Marie‐Christine Morère‐Le Paven, Martin Bourges, Maria Pia Nardelli, Christine Barras, Edouard Metzger, Aurelia Mouret   +13 more
wiley   +1 more source

Diagenesis of the Clay-Sulfate Stratigraphic Transition, Mount Sharp Group, Gale Crater, Mars. [PDF]

J Geophys Res Planets
Seeger CH, Grotzinger JP.
europepmc   +1 more source

Automated X‐ray computed tomography‐based analysis of clast fabric in drill‐cores of glacial diamicts using deep learning models

Boreas, EarlyView.
Clast‐fabric analysis is a widely used method for investigating depositional and deformation processes in glacial sediments. However, traditional field‐based approaches lack standardization, are time consuming and introduce sampling bias. This study aimed to develop a novel approach to automate clast‐fabric analysis using machine learning‐based image ...
Bennet Schuster, David Mair, Timothy C. Schmid, Lukas Gegg, Marius W. Buechi, Sebastian Schaller, Flavio S. Anselmetti, Frank Preusser   +7 more
wiley   +1 more source

Shoreline and deglaciation chronology in southeast Norway

Boreas, EarlyView.
The postglacial relative sea level history is reconstructed in four areas of mid‐ and inner Oslofjorden in southeast Norway. The reconstructions are based on radiocarbon‐dated raised shoreline levels from 42 sites, mainly isolation basins, and limiting ages from four lakes above the marine limit.
Anders Romundset, Isak Roalkvam, Mikis van Boeckel, Fredrik Høgaas, Kari E.  Henningsmoen, Helge I. Høeg, Rolf Sørensen   +6 more
wiley   +1 more source

Reply to Emery-Wetherell: Taphonomy of Lujiatun 3D dinosaurs is inconsistent with death and burial by lahars. [PDF]

Proc Natl Acad Sci U S A
Olsen PE, MacLennan SA, Sha J, Kinney ST, Chang C, Fang Y, Liu J, Slibeck BB, Chen E, Schoene B.   +9 more
europepmc   +1 more source

Was wir vom Polareis über den Klimawandel lernen können [PDF]

, 2008
Eisen, Olaf
core  

Stratigraphie

, 2015
openaire   +2 more sources

Use of LiDAR to derive a new model of glacial hydro‐dynamic events shaping southern Ontario landscapes, Canada

Boreas, EarlyView.
High‐resolution LiDAR data with field validation of inferred southern Ontario ice stream terrains indicate that steady‐state ice streaming is difficult to reconcile with our observations. Rather, these new observations show strong evidence of significant fluvial scouring across the area in which meltwater sheet flow overtopped the landscape.
David R. Sharpe, Chris C. Smart
wiley   +1 more source

Uncovering Human Tooth Marks in the Search for Dog Domestication: The Case of Coímbre Cave. [PDF]

Animals (Basel)
Claver I, Estaca V, de Andrés-Herrero M, Herranz-Rodrigo D, Álvarez-Alonso D, Yravedra J.   +5 more
europepmc   +1 more source

Living on the edge: Pleistocene ice‐free refugia and collared lemming (Dicrostonyx sp.) in the North American High Arctic

Boreas, EarlyView.
Comparing the morphological variation of North American collared lemming with climatic and geographic features, as well as genetic insight and the ice sheet extend, indicate the strong geographic structure underlying the morphological diversity of the genus, that might be linked with a local Pleistocene survival in the High Arctic.
Louis Arbez, Aurelien Royer, Benjamin Pohl, Jean‐François Buoncristiani, Sophie Montuire   +4 more
wiley   +1 more source