Article
Geosciences, Multidisciplinary
Daphnee Tuzlak, Joel Pederson, Aaron Bufe, Tammy Rittenour
Summary: Understanding the dynamics of the greater Yellowstone region requires constraints on deformation over various time scales. This study examines the erosion and deformation records of the Upper Snake River drainage to investigate the role of uplift, subsidence, and faults in incision processes. The results suggest that incision is not solely driven by uplift, but also by downstream baselevel fall and localized deformation along normal faults.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2022)
Article
Environmental Sciences
Maria Gabriella Forno, Franco Gianotti, Umberto Storti
Summary: Urban geomorphology has become an increasingly important field of study in recent decades. This research focuses on the geomorphology of Turin, Italy, and involves drilling 40 boreholes to evaluate the morphology of the proglacial plain, the composition of fluvial sediments, and the presence of erosional and depositional terraces. The findings suggest that the region has experienced significant changes due to glacial activity and subsequent river deviations during the Holocene period.
Article
Geochemistry & Geophysics
X. P. Yuan, L. Guerit, J. Braun, D. Rouby, C. M. Shobe
Summary: Fluvial deposits provide the best-preserved geomorphic record of past climate change, but quantitatively extracting this information is challenging due to the complexity of erosion, sediment transport, and deposition processes. This study combines a numerical model and a new analytical solution to show that the thickness of fluvial deposits at the outlet of a mountain river can be linked to rainfall oscillations and mountain uplift rate. The findings provide a new theoretical framework for quantitatively extracting information on past rainfall variations from fluvial deposits.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geography, Physical
Willem Viveen, Jorge Sanjurjo-Sanchez, Miluska A. Rosas, Veerle Vanacker, Juan Carlos Villegas-Lanza
Summary: The late Quaternary fluvial valley development in Peru is driven by summer insolation maxima, but not always coincides. Tectonic uplift has not been considered in the current terrace formation models. The chronology of Canete River's terraces corresponds to Heinrich events and rising lake levels in the Andes.
GLOBAL AND PLANETARY CHANGE
(2022)
Article
Geography
M. Gabriella Forno, Franco Gianotti
Summary: The detailed geomorphological mapping of the Po River fluvial terraces in Turin revealed three stages in the geological evolution of the area: the formation of alpine fans, the erosion by the Po River of tributary sediments, and the deposition by the Po River. This study highlights the complex interactions between the Po River and its tributaries in shaping the landscape of Turin.
Article
Geography, Physical
Jose Luis Pena-Monne, Pedro Proenca Cunha, Maria Marta Sampietro-Vattuone, David R. Bridgland, Andrew S. Murray, Jan-Pieter Buylaert
Summary: This study focused on the well-exposed terrace deposits of the Guadalaviar and Turia rivers, providing insights into the genetic connection between river-terrace sediments and slope accumulations. New Optically Stimulated Luminescence (OSL) ages were obtained from these Quaternary deposits, revealing the chronological correlation of the glacial-interglacial cycles of the Pyrenees with marine isotope stages. The findings suggest a close relationship between fluvial terraces and slope deposits in a setting influenced by temperate to cold climates.
GLOBAL AND PLANETARY CHANGE
(2022)
Article
Geology
Xueliang Wang, John J. Clague, Paolo Frattini, Shengwen Qi, Hengxing Lan, Wen Zhang, Lihui Li, Juanjuan Sun, Giovanni Battista Crosta
Summary: Debate about the Sadler effect, which refers to the relationship between rates of fluvial incision and time, continues to impede the use of incision rates as indicators of tectonic and climatic processes. This study presents field data from the Rumei watershed in southeast Tibet, providing evidence that climate forcing is the main driver of sediment production and delivery to streams. The authors propose a conceptual model that links uplift-driven incision to channel aggradation induced by climate change.
Article
Engineering, Marine
Efthimios Karymbalis, Konstantinos Tsanakas, Ioannis Tsodoulos, Kalliopi Gaki-Papanastassiou, Dimitrios Papanastassiou, Dimitrios-Vasileios Batzakis, Konstantinos Stamoulis
Summary: This paper investigates the role of tectonic processes in the late Quaternary evolution of the coastal landscape in the Neapolis area. By studying marine terraces and using Optically Stimulated Luminescence (OSL) dating, the study finds a significant coastal uplift with a long-term uplift rate of 0.36 ± 0.11 mm/a.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Geography, Physical
Varyl Robert Thorndycraft
Summary: This study explores the debate over isostatic uplift versus discharge as drivers of river incision by analyzing a terrace sequence from the Rio Pinturas in Argentine Patagonia. The results show that terrace incision can be driven by discharge and sediment dynamics.
JOURNAL OF QUATERNARY SCIENCE
(2023)
Article
Geography, Physical
Jose Luis Pena-Monne, Lourdes Montes Ramirez, Maria Marta Sampietro-Vattuone, Rafael Domingo Martinez, Alicia Medialdea, Miguel Bartolome, Virginia Rubio Fernandez, Rosario Garcia Gimenez, Valenti Turu, Xavier Ros, Pere Baro, Juan Luis Bernal-Wormull, R. Lawrence Edwards
Summary: The Roca San Miguel archaeological site in the Pre-Pyrenean region was occupied during Mousterian times. Through geoarchaeological and paleoenvironmental reconstruction, the site's chronology and evolutionary model from the penultimate glacial period to the last glacial cycle have been established. It is the oldest accurately dated Neanderthal occupation in this region.
QUATERNARY RESEARCH
(2022)
Article
Environmental Sciences
E. Deal
Summary: The research indicates that flow resistance in steep mountain rivers has important implications for hydraulic geometry and sediment transport. However, it is challenging to understand and predict flow resistance in these rivers due to their complex morphology and spatially variable flow. The study uses a double-averaging approach and derives a flow resistance model that compares well with a large dataset of flow velocity in natural channels. The results also suggest a degree of self-organization in bed morphology, which may simplify the prediction of flow resistance in steep mountain rivers.
WATER RESOURCES RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Yingguo Wang, Haiou Zhang, Xueying Wu, Yantao Hu
Summary: Multiple uplifts of the Qinghai-Tibet Plateau have had significant effects on the geomorphology and environment of Asia. This study focused on the digital geomorphology of the Bahe River basin and found that it was influenced by tectonic activity and intense river erosion. The horizontal expansion of the northern Qinghai-Tibet Plateau contributed to the development of the basin.
Article
Geosciences, Multidisciplinary
Sharon A. Wilson, Alexander M. Morgan, Alan D. Howard, John A. Grant
Summary: This study presents an inventory of alluvial fans and deltas within martian impact craters, indicating that these landforms are more widespread and numerous than previously reported. Alluvial fans are mainly found at higher elevations, while deltas are preferentially located at lower elevations where interactions with groundwater may have enabled the formation of lakes. The distribution of these landforms in southern mid-latitude craters suggests a late occurring, widespread source of water, consistent with late precipitation patterns.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geography, Physical
Katherine A. Woodworth, Gregory B. Pasternack
Summary: This study tested the hypothesis that a river's channel pattern and its morphological unit (MU) assemblage will remain stationary under a stationary flow and sediment regime. The study found that the MU assemblage and channel pattern of the gravel/cobble lower Yuba River shifted towards a lower-relief morphology, indicating that they were not stationary. This study suggests the need for further investigation into MU stationarity using modern mapping methods.
Article
Geography, Physical
Jan Flasar, Petra Stepancikova
Summary: The Southern Bohemia Novohradske Foothills region in the Czech Republic is known for moldavite occurrences. This study reconstructs ancient rivers that deposited moldavites and their connection to present streams. The research suggests a relationship between moldavite-bearing sediments and current watercourses, potentially tracing changes in river networks and local relief due to tectonic activity during the Pliocene and Pleistocene.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)