Article
Geochemistry & Geophysics
T. S. Waldien, R. O. Lease, S. M. Roeske, J. A. Benowitz, P. B. O'Sullivan
Summary: Our study shows that the dextral Denali fault system in the eastern Alaska Range has facilitated bedrock exhumation and topographic growth during oblique flat slab subduction. The data suggest that most high topography regions in southern Alaska have undergone rapid bedrock cooling and exhumation since 30 Ma, with active strike-slip fault systems playing a key role.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geochemistry & Geophysics
Joel E. Saylor, Kurt E. Sundell, Nicholas D. Perez, Jeffrey B. Hensley, Payton McCain, Brook Runyon, Paola Alvarez, Jose Cardenas, Whitney P. Usnayo, Carlos S. Valer
Summary: The Central Andean Plateau is the largest plateau in the modern Andes and has unique characteristics such as its height, width, thick crust, and retroarc shortening. However, there is a lack of detailed Cenozoic basin history, which hinders the testing of hypotheses explaining these characteristics. In this study, new data on sediment provenance and deposition ages are synthesized with existing records to develop a model of the plateau's evolution.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geology
Ricardo Enrique Milian de la Cruz, Luigi Solari, Uwe Martens, Fanis Abdullin, Maria Isabel Sierra-Rojas
Summary: The petrography, geochronology, and geochemistry of the Chivillas Formation in the southern Sierra Madre Oriental, Mexico, indicate a local provenance from western basement sources. The study reveals the presence of different detrital populations and suggests that rivers from the Acatlan-Oaxacan block drained into the basin during the Early Cretaceous. Additionally, fission-track analysis indicates rapid exhumation of Chivillas rocks after the tectonic activity in the region.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Geology
Sandra Guerrero-Moreno, Luigi A. A. Solari, Berlaine Ortega-Flores, Roberto Maldonado, Carlos Ortega-Obregon
Summary: The Oaxacan Complex Carboniferous-Permian sedimentary cover in southern Mexico records provenance shifts through time, reflecting the collision between Gondwana and Laurentia to amalgamate Pangea. The integration of petrological analysis and LA-ICP-MS U-Pb zircon geochronology suggests that the sedimentary units were deposited in a peri-arc basin, sharing sediment provenance with adjacent terranes. The presence of volcanic activity and detrital zircon grains from different ages indicate the formation of magmatic arcs associated with subduction events.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Geology
Marta Roige, David Gomez-Gras, Daniel F. Stockli, Antonio Teixell, Salvador Boya, Miquel Poyatos-More
Summary: This study investigates the provenance evolution of the clastic deposits in the Jaca basin in the southern Pyrenees from the mid Eocene to early Miocene. It reveals a shift in the source area from the Variscan to Cadomian signature. The integration of detrital zircon U/Pb data with sandstone petrography improves the resolution of the source-area shifts and the understanding of sediment recycling during foreland evolution.
SEDIMENTARY GEOLOGY
(2023)
Article
Geography, Physical
Robert Arato, Gabriella Obbagy, Istvan Dunkl, Sandor Jozsa, Keno Luensdorf, Janos Szepesi, Kata Molnar, Zsolt Benko, Hilmar von Eynatten
Summary: The study compared the sedimentary provenance signature of modern river sediments from different rivers entering the Pannonian Basin, revealing the effects of source area differentiation and recycling on sediment composition.
GLOBAL AND PLANETARY CHANGE
(2021)
Article
Geography, Physical
Zhiyong Zhang, Thomas Zack, Barry Kohn, Marco G. Malusa, Lin Wu, Mahnaz Rezaeian, Nan Wang, Dunfeng Xiang, Chao Guo, Rasoul Esmaeili, Bo Wan, Wenjiao Xiao
Summary: The intrusion rocks in northwest Iran provide an ideal opportunity for studying geothermochronology and recording the tectonic evolution of the Tethys Ocean. Multiple magmatic events during the Late Carboniferous, mid-Cretaceous, and middle Eocene suggest subduction and ridge subduction processes. The results also highlight the significance of subduction and collision in post-magmatic cooling and exhumation processes.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geochemistry & Geophysics
Chelsea Mackaman-Lofland, Brian K. Horton, Richard A. Ketcham, Nadine McQuarrie, Julie C. Fosdick, Facundo Fuentes, Kurt N. Constenius, Tomas N. Capaldi, Daniel F. Stockli, Patricia Alvarado
Summary: The deformation and foreland basin evolution in the Andes of western Argentina are influenced by changes in crustal inheritance and convergent margin dynamics. Through geological and thermochronological records, this study reveals the importance of different periods of shortening, migration, intraforeland basement deformation, and exhumation of foreland basin fill, as well as the significant control of thrust belt kinematics and basement heterogeneities.
Article
Geochemistry & Geophysics
Kyle Smith, Carl Tape, Victor C. Tsai
Summary: The Nenana basin in central Alaska is a sedimentary basin aligned with an active fault zone that produces large earthquakes. Thirteen broadband seismic stations were deployed in the region from 2015 to 2019, recording various earthquakes that provide data to study the response of the basin to seismic wavefield. The study finds amplification of seismic waves in the basin, with stronger amplification at deeper basin stations and also marginal basin stations.
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
(2023)
Article
Geosciences, Multidisciplinary
Nan Wang, Zhiyong Zhang, Marco G. Malusa, Jien Zhang, Lin Wu, Dunfeng Xiang, Wenjiao Xiao
Summary: This study analyzes sediments from the Songliao Basin in northeastern China to investigate the impact of tectonics, volcanism, and climate on rift-basin sedimentation. The results reveal that tectonics played a major role in controlling sediment provenance change in the mid-Cretaceous Songliao Basin.
Article
Geosciences, Multidisciplinary
S. Zapata, L. Calderon-Diaz, C. Jaramillo, F. Oboh-Ikuenobe, J. C. Piedrahita, M. Rodriguez-Cuevas, A. Cardona, E. R. Sobel, M. Parra, V. Valencia, A. Patino, J. S. Jaramillo-Rios, M. Flores, J. Glodny
Summary: A new dataset including detrital U-Pb zircon ages, sandstone petrography, and low-temperature thermochronology from the Southern Central Cordillera were used to construct a paleogeographical model of the Miocene hinterland and foreland regions in the Northern Andes.
Article
Geography, Physical
Bowen Song, Kexin Zhang, Yi Wei, Gaolei Jiang, Tinglu Yang, Thomas J. Algeo, Jiaxuan Wang, Fang Han
Summary: This comprehensive study focuses on the early Cenozoic topography and drainage systems of central Tibet, with emphasis on the Paleogene basins along the Bangong-Nujiang Suture Zone (BNSZ). The study reveals a major shift in sediment provenance in the western segment of the BNSZ, contributing to a better understanding of the early Cenozoic topography in central Tibet.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geochemistry & Geophysics
Sheree E. Armistead, Alan S. Collins, Renata S. Schmitt, Raisa L. Costa, Bert De Waele, Theodore Razakamanana, Justin L. Payne, John D. Foden
Summary: The study compared Paleoproterozoic sedimentary sequences in Madagascar, Africa, and India using detrital zircon U-Pb and Hf data, revealing similarities in age and isotopic characteristics. A new concept of the Greater Itremo Basin was proposed to explain the extensive sedimentary coverage in late Paleoproterozoic Madagascar. The research also suggested a new Paleoproterozoic plate tectonic configuration where central Madagascar is connected to the Tanzania Craton and Southern Granulite Terrane.
Article
Geosciences, Multidisciplinary
Lei Xing, Qianqian LI, Qingwei Meng, Huaishan Liu, Jia Wei, Boran Lu, Heng Zhou
Summary: This paper studies the development and evolution characteristics of the structure and strata in the Cenozoic Mariana fore-arc sedimentary basin based on seismic and drilling data, and explores the relationship between volcanic activity and the tectonic and stratigraphic development pattern of the basin.
ACTA GEOLOGICA SINICA-ENGLISH EDITION
(2022)
Article
Geochemistry & Geophysics
Scott Jess, Eva Enkelmann, William A. Matthews
Summary: The timing of surface uplift in the Appalachian Mountains has been a topic of controversy. This study aims to resolve the exhumation history of the region using detrital laser ablation apatite (U-Th-Sm)/He dating. Results show a majority of Cretaceous dates, indicating a lack of significant Cenozoic exhumation. These findings have implications for understanding surface uplift and landscape evolution.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geosciences, Multidisciplinary
William A. Thomas, George E. Gehrele, Kurt E. Sundell, Stephen F. Greb, Emily S. Finzer, Ryan J. Clark, David H. Malone, Brian A. Hampton, Mariah C. Romero
Article
Geochemistry & Geophysics
Sanaa Abdulhameed, Lothar Ratschbacher, Raymond Jonckheere, Lukasz Gagala, Eva Enkelmann, Alexandra Kaessner, Myriam S. C. Kars, Adam Szulc, Sofia-Katerina Kufner, Bernd Schurr, Jean-Claude Ringenbach, Mykhaylo Nakapelyukh, Jahanzeb Khan, Mustafo Gadoev, Ilhomjon Oimuhammadzoda
Article
Geochemistry & Geophysics
Julia Pickering, William Matthews, Eva Enkelmann, Bernard Guest, Chris Sykes, Brett M. Koblinger
Article
Geosciences, Multidisciplinary
E. Schwarz, E. S. Finzel, G. D. Veiga, C. W. Rapela, C. Echevarria, L. A. Spalletti
Summary: This study provides detailed detrital-zircon U-Pb geochronology of the Valanginian-Hauterivian Pilmatue Member of the Agrio Formation in the Neuquen Basin, along with sedimentology and paleogeographic reconstructions, to understand the role and pathway of far-flung sediment in the transportation system.
Article
Geology
Minhee Choi, David W. Eaton, Eva Enkelmann
Summary: The Denali fault is a transcurrent fault system with segments of variable historical seismicity, where a pair of earthquakes near the Eastern Denali fault in 2017 exhibited unexpected source mechanisms and stress conditions. Precise relocation of aftershocks revealed distinct fault strands oblique to the EDF, with calculations indicating triggering of the second earthquake by the first. The EDF parallels the Fairweather transform, implying stress transfer deforming and shortening the region between them.
Article
Geochemistry & Geophysics
Ryan McKay, Eva Enkelmann, Thomas Hadlari, William Matthews, Frederic Mouthereau
Summary: New low-temperature thermochronology data from clastic sedimentary rocks in the northern Richardson Mountains, Canada, indicate significant exhumational cooling during late Eocene-early Oligocene time. The results reveal three phases of cooling, with most samples cooled during the first and second phases, whereas the third phase is less well constrained. The timing of deformation is similar to nearby mountain belts, which suggests a widespread driving mechanism for deformation that could be related to the motion of the North American craton.
Article
Geochemistry & Geophysics
Justin A. Rosenblume, Emily S. Finzel, David M. Pearson
Summary: The Lower Cretaceous Kootenai Formation in western Montana showed three discrete provenance signatures, indicating different sediment sources from adjacent regions in Early Cretaceous time. These findings provide insights into the sediment dispersal patterns and translational history of terranes in the hinterland of the orogen during this period.
Article
Geochemistry & Geophysics
Jeanette C. Arkle, John Weber, Eva Enkelmann, Lewis A. Owen, Rob Govers, Scott Jess, Chris Denison, Paul B. O'Sullivan, Raymond A. Donelick
Summary: Transition zones from subduction to transform motion in the Caribbean plate can lead to complex deformation in regions like the Northern Range and Paria Peninsula. The exhumation history of these areas shows distinct phases of rapid cooling and exhumation, with eastward migration of these processes over time. The post-collisional changes in exhumation suggest east-side-up tilting of the Northern Range around 4 million years ago, consistent with the propagation of a lithospheric subduction-transform edge propagator fault.
Article
Geosciences, Multidisciplinary
Justin A. Rosenblume, Emily S. Finzel, David M. Pearson, Cole T. Gardner
Summary: This study examines the provenance of the Lower Cretaceous Blackleaf Formation in southwestern Montana, revealing three distinct provenance groups and suggesting their sedimentation was influenced by the Western Interior Seaway.
Article
Geosciences, Multidisciplinary
Eva Enkelmann, Sarah Falkowski
Summary: The study reveals that the entire corridor between the Fairweather and Eastern Denali faults has been exhumed since the mid-Miocene era, with exhumation reaching much farther inboard of the Fairweather fault than in the St. Elias syntaxial region farther north. The Eastern Denali fault appears to serve as a backstop in these geological processes, with very limited late Cenozoic exhumation northeast of the fault.
Article
Geosciences, Multidisciplinary
Scott Jess, Eva Enkelmann, Stephen E. Grasby, Kelley Fraser
Summary: The study suggests that the timing of hot spring onset may be related to partial melting at the base of the crust, associated with increased heat flow in the late Cenozoic across the region. These findings have significant implications for understanding geothermal systems and the conditions required for hot spring formation.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2021)
Article
Geosciences, Multidisciplinary
R. M. Flowers, P. K. Zeitler, M. Danisik, P. W. Reiners, C. Gautheron, R. A. Ketcham, J. R. Metcalf, D. F. Stockli, E. Enkelmann, R. W. Brown
Summary: The field of (U-Th)/He geochronology and thermochronology has experienced significant growth over the past 25 years. However, there is currently a lack of universally agreed upon protocols for reporting data and uncertainties. This study aims to address these issues and provides recommendations to enhance the reliability and cross-laboratory comparison of (U-Th)/He data.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2022)
Article
Geochemistry & Geophysics
Scott Jess, Eva Enkelmann, William A. Matthews
Summary: The timing of surface uplift in the Appalachian Mountains has been a topic of controversy. This study aims to resolve the exhumation history of the region using detrital laser ablation apatite (U-Th-Sm)/He dating. Results show a majority of Cretaceous dates, indicating a lack of significant Cenozoic exhumation. These findings have implications for understanding surface uplift and landscape evolution.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geochemistry & Geophysics
E. S. Finzel, J. A. Rosenblume, D. M. Pearson, Pierre A. Zippi
Summary: The provenance and depositional age of the Upper Cretaceous Frontier Formation in southwestern Montana were determined using biostratigraphy, sandstone petrography, and detrital zircon geochronology. The results suggest that Laramide-style tectonism in Idaho-Montana may not be related to shallow-angle subduction, but rather controlled by factors such as inherited faults, basement highs, and sedimentary cover thickness.
Article
Geology
Emily S. Finzel, Justin A. Rosenblume
Summary: This study presents U-Pb geochronology of detrital zircons from lacustrine carbonate strata in southwestern Montana, USA, providing evidence for the effectiveness of acid-digestion recovery and resolving depositional ages of nonmarine strata. The results indicate that detrital zircon U-Pb geochronology holds considerable potential for dating critical chemical and climatic events recorded in the stratigraphy of lacustrine carbonates.
Article
Geochemistry & Geophysics
Lingyu Zhang, Kristoffer Szilas
Summary: This study presents new petrological and geochemical data for the Narssaq Ultramafic Body (NUB) in the Itsaq Gneiss Complex of SW Greenland. The results indicate that the ultramafic rocks of NUB are not mantle residues, but instead represent crustal cumulates derived from high-Mg magmas.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Rong Xu, Sarah Lambart, Oliver Nebel, Ming Li, Zhongjie Bai, Junbo Zhang, Ganglan Zhang, Jianfeng Gao, Hong Zhong, Yongsheng Liu
Summary: This study investigated the iron isotope compositions of Cenozoic basalts in Southeast China, finding significant variations related to different types of basalts and their respective sources.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
C. J. Ebinger, Miriam C. Reiss, Ian Bastow, Mary M. Karanja
Summary: The East African rift system is formed above mantle upwellings and the formation of rifts is related to lithospheric thinning and magmatic activity. The amount of splitting varies spatially and the fast axes are predominantly parallel to the orientation of the rifts. Thick lithospheric modules have less splitting and different orientations, which may indicate mantle plume flow. Splitting rotates and increases in strength as it enters the rift zones, suggesting that the anisotropy is mainly present at shallow depths.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Correction
Geochemistry & Geophysics
Ekaterina Rojas-Kolomiets, Owen Jensen, Michael Bizimis, Gene Yogodzinski, Lukas Ackerman
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Robert W. Nicklas, Igor S. Puchtel, Ethan F. Baxter
Summary: Oxygen fugacity is a fundamental parameter for understanding redox processes in igneous systems. This study compares the Fe-XANES oxybarometry method with the V-in-olivine method for evaluating fO(2) in MORB lavas. The results show that the V-in-olivine method is not applicable to samples with low MgO content, and that the majority of Archean komatiite sources have lower fO(2) than modern MORB.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Chunfei Chen, Stephen F. Foley, Sebastian Tappe, Huange Ren, Lanping Feng, Yongsheng Liu
Summary: The volatile components CO2 and H2O play a major role in mantle melting and heterogeneity. In this study, Ca isotopes were used to trace the lithological heterogeneity in alkaline magmatic rocks. The results revealed the presence of K-richterite and carbonate components as the source of alkaline magmas with low delta 44/40Ca values. These findings highlight the importance of Ca isotopes as a robust tracer of lithological variation caused by volatiles in the Earth's upper mantle.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Timothee Jautzy, Gilles Rixhon, Regis Braucher, Romain Delunel, Pierre G. Valla, Laurent Schmitt, Aster Team
Summary: Although the current approach to estimate catchment-wide denudation rates using only 10Be concentrations has made significant progress in geomorphology, this study argues for the inclusion of 26Al measurements and testing of steady-state assumptions in slow eroding, formerly glaciated landscapes. The study conducted measurements of both 10Be and 26Al in stream sediments from the Vosges Massif in France and found that elevation, slope, channel steepness, and precipitation were the primary factors controlling denudation rates. The study also revealed a significant relationship between the extent of past glaciation and the cosmogenic (un-)steadiness in the stream sediments.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Erik van der Wiel, Douwe J. J. van Hinsbergen, Cedric Thieulot, Wim Spakman
Summary: Numerical models of Earth's mantle dynamics can predict the vigour and mixing of mantle flow, and the average slab sinking rates are an unexplored parameter that can provide intrinsic information on these characteristics. Through numerical experiments, it has been found that slab sinking rates are strongly correlated with mantle convection and mixing, and may explain geochemical observations from hotspot volcanoes.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)