Results 71 to 80 of about 670 (200)

Description and terrestrial ages of the Calama Area Meteorite Collection (Atacama Desert, Chile)

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract We present a comprehensive study of a meteorite collection from the Atacama Desert (Chile), the driest and most climatically stable desert in the world. This collection includes meteorites from three adjacent Dense Collection Areas (DCAs) in the northern part of the Atacama Desert: Calama, Sierra Gorda, and Chug Chug, referred to as the ...
Carine Sadaka   +9 more
wiley   +1 more source

The Mystery of Baselevel Controls in the Incision History of the Central Colorado Plateau

open access: yesAGU Advances
Erosion can remain active and changing in landscapes long after tectonic drivers have ceased, potentially due to local‐geologic controls, climate changes, or geodynamics. We present new fluvial incision‐rate histories and terrain analyses of the Colorado
Natalie M. Tanski   +4 more
doaj   +1 more source

Fluvial terrace formation in mountainous areas: (1) Influence of climate changes during the last glacial cycle in Albania

open access: yesComptes Rendus. Géoscience
This work analyses terraces formation from the case of Albanian rivers. An allostratigraphy study of the fluvial terraces is combined with new numerical dating.
Guzmán, Oswaldo   +5 more
doaj   +1 more source

A Triassic chronostratigraphic and palaeogeographic framework for the Utsira High area, northern North Sea: Reconstructing a basin‐scale drainage divide

open access: yesSedimentology, EarlyView.
ABSTRACT The Triassic succession of the northern North Sea comprises a series of interbedded sandstones, mudstones and conglomerates deposited under a fluctuating arid to semi‐humid climate regime, which are often difficult to correlate regionally due to differing lithostratigraphic schemes and poor age control. Despite existing regional studies on the
Riccardo Sordi   +3 more
wiley   +1 more source

Distribution of Orthoptera across the river valley (Kaluga-Aleksin canyon, European Russia) and their dynamics under the overgrowing of meadows

open access: yesNature Conservation Research: Заповедная наука
Orthoptera insects (hereinafter – orthopterans) play a key role in grassland ecosystems and are often used as indicators of their condition. To conserve these insects and to model their habitat preferences, we need to know patterns of their distribution ...
Victor V. Aleksanov
doaj   +1 more source

Late Quaternary fluvial terrace characteristics and ages of the Pamir‒Tian Shan convergence zone: indications of regional climate change and tectonic uplift

open access: yesFrontiers in Earth Science
The Pamir‒Tian Shan collision zone, located at the northwestern edge of the Himalaya‒Qingzang orogenic belt, provides a natural laboratory for investigating the development of fluvial terraces controlled by regional climate change and tectonic uplift. In
Jinhua Deng   +5 more
doaj   +1 more source

Morphometric analysis of urban fluvial terraces using UAV LiDAR: A case study from the Santa Catarina River, Mexico [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
This study analyzes the geomorphological evolution of fluvial terraces along the urban section of the Santa Catarina River (Nuevo León, México) by integrating high-resolution UAV-based LiDAR and photogrammetry.
M. Pérez Martínez   +7 more
doaj   +1 more source

River Sand and Gravel Mining: Global Drivers, Impacts, and Pathways for Sustainable Management

open access: yesReviews of Geophysics, Volume 64, Issue 3, September 2026.
Abstract River sand and gravel are mined worldwide at volumes that now rival their natural replenishment, yet quantitative knowledge of this mining activity and its consequences lags far behind many other global environmental pressures. We synthesize 411 peer‐reviewed studies published since 1974 within a new Driver‐to‐Management Pathway for ...
Edward Park   +25 more
wiley   +1 more source

Surface ages of alluvial fans in the southern Central Andes recorded by ground‐ and space‐based hyperspectral reflectance

open access: yesEarth Surface Processes and Landforms, Volume 51, Issue 8, August 2026.
Secondary weathering of alluvial‐fan surfaces records the relative, and even absolute, ages of deposited sediments up to 300 ka. Hyperspectral imagery quantifies evolving mineral‐weathering pathways to unlock high‐resolution mapping and dating of these sedimentary landscapes.
Henry T. Crawford   +6 more
wiley   +1 more source

Tracing river dynamics: Multi‐temporal planform evolution and morphological change analyses in a meandering reach using high‐resolution satellite imagery and UAV data

open access: yesEarth Surface Processes and Landforms, Volume 51, Issue 8, August 2026.
High‐resolution satellite imagery and UAV data enabled detailed morphometric parameter calculation, meander classification and multi‐epoch change detection for the Atrak River's meandering channel. Our results reveal rapid, episodic migration and a nearly tenfold surge in bank erosion triggered by the 2019 extreme flood, with persistent instability at ...
Aiding Kornejady   +4 more
wiley   +1 more source

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