Results 1 to 10 of about 79,204 (264)

Dating mylonitic overprinting of ancient rocks

open access: yesCommunications Earth & Environment, 2023
The timing of deformation in ancient shear zones of the Akia Terrane, Greenland, is recorded by the Proterozoic Rb-Sr age of mylonitic biotite which is determined through collision cell laser ablation and inverse thermal history modelling.
Christopher L. Kirkland   +6 more
doaj   +1 more source

Learning and replaying spatiotemporal sequences: A replication study

open access: yesFrontiers in Integrative Neuroscience, 2022
Learning and replaying spatiotemporal sequences are fundamental computations performed by the brain and specifically the neocortex. These features are critical for a wide variety of cognitive functions, including sensory perception and the execution of ...
Jette Oberländer   +6 more
doaj   +1 more source

Does Zircon Shape Retain Petrogenetic Information?

open access: yesGeochemistry, Geophysics, Geosystems, 2023
Zircon shape is commonly reported during geochronology and geochemistry analyses of igneous, metamorphic, and sedimentary rocks, but the relationship of zircon shape to primary growth environmental conditions remains poorly constrained.
T. Scharf   +4 more
doaj   +1 more source

Widespread reworking of Hadean-to-Eoarchean continents during Earth’s thermal peak

open access: yesNature Communications, 2021
The nature and evolution of Earth’s crust during the Hadean and Eoarchean is largely unknown due to the lack of preserved material from this period. Here, the authors document a period of crustal rejuvenation between 3.2 and 3.0 Ga, coincident with peak ...
C. L. Kirkland   +5 more
doaj   +1 more source

Rutile Ages and Thermometry Along a Grenville Anorthosite Pathway

open access: yesGeochemistry, Geophysics, Geosystems, 2023
The Grenville Orogen, in North America, contains a belt of Proterozoic anorthosite massifs with an episodic emplacement history. These distinctive magmas reflect extensive fractional crystallization of plagioclase from a mafic magma and contain layers ...
Janne Liebmann   +2 more
doaj   +1 more source

Regional zircon U-Pb geochronology for the Maniitsoq region, southwest Greenland

open access: yesScientific Data, 2021
Measurement(s) sediment deposition • magma • crystallization • metamorphism Technology Type(s) laser ablation inductively coupled plasma mass spectrometry • secondary ion mass spectrometry Sample Characteristic - Environment rock • outcrop Sample ...
Hugo K. H. Olierook   +11 more
doaj   +1 more source

A partially nested cortical hierarchy of neural states underlies event segmentation in the human brain

open access: yeseLife, 2022
A fundamental aspect of human experience is that it is segmented into discrete events. This may be underpinned by transitions between distinct neural states.
Linda Geerligs   +5 more
doaj   +1 more source

Directly Dating Plio‐Pleistocene Climate Change in the Terrestrial Record

open access: yesGeophysical Research Letters, 2023
Accurate chronology of climatic shifts is critical to understand the controls on landscape and species evolution. Unfortunately, direct dating of continental climate change is hindered by the scarcity of dateable terrestrial products evidencing climatic ...
Maximilian Dröllner   +6 more
doaj   +1 more source

Exploring atypical timescales in the brain

open access: yeseLife, 2019
Identifying activity imbalances in specific brain regions may help to diagnose and treat psychiatric disorders.
Leonardo L Gollo
doaj   +1 more source

Dynamical Analysis of Biological Signals with the 0–1 Test: A Case Study of the PhotoPlethysmoGraphic (PPG) Signal

open access: yesApplied Sciences, 2021
The 0–1 test distinguishes between regular and chaotic dynamics for a deterministic system using a time series as a starting point without appealing to any state space reconstruction method.
Javier de Pedro-Carracedo   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy