Results 1 to 10 of about 54,408 (168)

On the Origin of Orphan Tremors and Intraplate Seismicity in Western Africa [PDF]

Frontiers in Earth Science, 2021
On September 5–7, 2018, a series of tremors were reported in Nigeria’s capital city, Abuja. These events followed a growing list of tremors felt in the stable intraplate region, where earthquakes are not expected. Here, we review available seismological,
T. Olugboji, Manoochehr Shirzaei, Yingping Lu, Yingping Lu, A. A. Adepelumi, F. Kolawole   +5 more
doaj   +2 more sources

Intraplate deformation of Gondwana terranes and implications for the Wilson Cycle [PDF]

Scientific Reports
The Wilson Cycle, a cornerstone of plate tectonic theory, describes the cyclical evolution of ocean basins from rifting and spreading to closure via subduction and continental collision and assembly.
Ana Fonseca, Johan De Grave
doaj   +2 more sources

Anatomy of a post-subduction collision [PDF]

Nature Communications
The spatiotemporal interplay of long-lasting post-orogenic deformations make continental collision zones among Earth’s most enigmatic systems. Here, we employ three-dimensional thermomechanical modeling to decode mantle dynamics of the Arabian-Eurasian ...
Ebru Şengül Uluocak, Russell N. Pysklywec, Claudio Faccenna, Taylor Schildgen   +3 more
doaj   +2 more sources

Brittle Deformation in the Neoproterozoic Basement of Southeast Brazil: Traces of Intraplate Cenozoic Tectonics

Geosciences, 2021
The basement of southeast Brazil is traditionally interpreted as the result of Neoproterozoic and early Paleozoic orogenic cycles. Wide regions of the Atlantic Plateau (southeast Brazil) are characterized by rocks and tectonic structures of Precambrian ...
Paola Cianfarra, Marcos Roberto Pinheiro
exaly   +3 more sources

Precursory seismicity unveiled before the Mw7.1 Dingri earthquake in Tibet [PDF]

Scientific Reports
On 7 January 2025, an Mw 7.1 normal-faulting earthquake struck the Dingri region in southwestern Xizang (Tibet), located within the extensional domain of the plateau - one of the most seismically active intraplate regions on Earth.
Franco Pettenati, Alessandro Vuan, Denis Sandron, Giampietro Verza, Matteo Picozzi   +4 more
doaj   +2 more sources

Interactions between tectonics, bedrock inheritance and geomorphic responses of rivers in a post-rifting upland (Ponta Grossa Arch region, Brazil)

Brazilian Journal of Geology, 2022
Tectonic rejuvenation has been widely described in ancient rifting areas of intraplate settings, despite extensive active tectonics being discontinued long ago.
Marcilene dos Santos, Francisco Sergio Bernardes Ladeira, Alessandro Batezelli, João Osvaldo Rodrigues Nunes, Eduardo Salamuni, Clauzionor Lima da Silva, Eder Cassola Molina, Isabel Cristina Moraes   +7 more
doaj   +1 more source

Late Paleozoic basaltic magmatism of Tarom- Masuleh area (western Alborz): whole-rock chemical characteristics and tectonic implications [PDF]

پترولوژی, 2021
The Tarom- Masuleh area (western Alborz) exposes considerable Late Paleozoic volcanic rocks. Stratigraphic relationships indicate that the igneous units are of Carboniferous- Permian age.
morteza delavari, Khadijeh Sehhat
doaj   +1 more source

Discriminating Tectonic Setting of Igneous Rocks Using Biotite Major Element chemistry−A Machine Learning Approach

Geochemistry, Geophysics, Geosystems, 2021
The composition of igneous biotite is a potential indicator of the geologic environment of its host rock. Here, we apply two machine learning models−eXtreemly Greedy tree Boosting (XGBoost) and light gradient boosting machine (LightGBM) to classify ...
Rupashree Saha, Dewashish Upadhyay, Biswajit Mishra   +2 more
doaj   +1 more source

Rock Magnetic Signature of Heterogeneities Across an Intraplate Basal Contact: An Example From the Northern Apennines

Geochemistry, Geophysics, Geosystems, 2021
Heterogeneities in the magnetic signature along intraplate shear zones complicate their correlation with the physical processes that are involved in the geodynamic evolution of megathrusts.
Claudio Robustelli Test, Elena Zanella
doaj   +1 more source

Global implication of mesoproterozoic (~ 1.4 Ga) magmatism within the Sette-Daban Range (Southeast Siberia)

Scientific Reports, 2021
Mesoproterozoic period included several global tectonic events like break-up of Nuna and formation of Rodinia. However, although Siberia is a significant piece of both supercontinents, Mesoproterozoic time is marked by quiescence of magmatic and tectonic
Sergey V. Malyshev, Alexei V. Ivanov, Andrey K. Khudoley, Alexander E. Marfin, Vadim S. Kamenetsky, Maya B. Kamenetsky, Olga Yu. Lebedeva   +6 more
doaj   +1 more source