Results 71 to 80 of about 21,047 (239)

Variable Sr Diffusion and Implications for Rb–Sr Biotite Geochronology

Journal of Metamorphic Geology, EarlyView.
ABSTRACT The rubidium–strontium (Rb–Sr) system has a long pedigree as a geochronological tool that relies on the application of an isochron approach. In particular, biotite contains strongly radiogenic Rb–Sr isotopes, and thus can yield meaningful crystallisation or cooling ages via this approach. However, the response of the Rb–Sr system in biotite to
Riley Rohrer, Christopher L. Kirkland, Hugo Olierook, Tim Johnson, Katy Evans   +4 more
wiley   +1 more source

Cenozoic geochronology

, 1985
We present a revised Cenozoic geochronology based upon a best-fit to selected high-temperature radiometric dates on a number of identified magnetic polarity chrons (within the Late Cretaceous, Paleogene, and Neogene) which minimizes apparent ...
Flynn, John J., Berggren, William A., Kent, Dennis V., Van Couvering, John A.   +3 more
core   +1 more source

Did a Late Paleoproterozoic-Early Mesoproterozoic landmass exist in the eastern Cathaysia block? New evidence from detrital zircon U-Pb geochronology and sedimentary indicators

, 2022
The South China Craton comprises the Yangtze and Cathaysia blocks and is one of the largest Precambrian continental blocks in East Asia. However, the early geological and geographical evolution of the Cathaysia block is relatively poorly understood, due ...
Renbo Huang, Zhiyuan He, Huang, Renbo, De Grave, Johan, He, Zhiyuan, Johan De Grave   +5 more
core   +1 more source

P–T Modelling Constrains the Depth of Emplacement of the Porto Azzurro Pluton and Implies Minor Exhumation Caused by the Zuccale Fault (Island of Elba, Italy)

Journal of Metamorphic Geology, EarlyView.
ABSTRACT Understanding the pressure of emplacement of granitic intrusions is crucial to understanding the exhumation history of plutons and constraining the tectonic setting of magma emplacement. However, P–T and geochronological constraints from exhumed plutons are often characterized by large uncertainties, especially in shallow crustal settings with
Samuele Papeschi, Marco Bonini, Matteo Lupi, Chiara Del Ventisette, Domenico Montanari   +4 more
wiley   +1 more source

First Direct Dating of Alteration of Paleo-Oil Pools Using Rubidium-Strontium Pyrite Geochronology

, 2020
Direct dating of petroleum systems by hydrocarbon or associated authigenic minerals is crucial for petroleum system analysis and hydrocarbon exploration.
Shaojie Li, Simon A. Wilde, Liu, Keyu, Li, Chao-Feng, Keyu Liu, Li, Shaojie, Gui, Lili, Hu, Si-Yu, Wang, Xuan-Ce, Chao-Feng Li, Si-Yu Hu, Jianliang Liu, Xuan-Ce Wang, Wu, Luya, Luya Wu, Wilde, Simon A., Liu, Jianliang, Lili Gui   +17 more
core   +1 more source

Impact‐diagnostic criteria for use in confirming a meteorite impact origin of terrestrial geological structures: Recommendations by the Impact Cratering Committee of the Meteoritical Society

Meteoritics &Planetary Science, EarlyView.
Abstract The framework of the Impact Cratering Committee (ICC) of the Meteoritical Society was approved in 2020, with the first committee members appointed in 2023. The ICC has a mandate to (1) approve, maintain, and update a database of confirmed terrestrial meteorite impact structures, (2) define and regularly update the criteria used for ...
A. J. Cavosie, S. Alwmark, D. Baratoux, G. Consolmagno, L. Ferrière, S. Goderis, N. Hauser, T. Kenkmann, C. Koeberl, G. R. Osinski, A. E. Pickersgill, M. Schönbächler   +11 more
wiley   +1 more source

Data tables - Lake Zabinskie Geochronology

, 2019
The data tables included in this file are the relevant datasets for the manuscript "Zander, P.D., Szidat, S., Kaufman, D., Żarczyński, M., Poraj-Górska, A.I., Boltshauser-Kaltenrieder, P., Grosjean, M. Miniature radiocarbon measurements (< 150 μg C) from
Kaufmann, Darrell Scott, Żarczyński, Maurycy, Szidat, Sönke, Grosjean, Martin, Poraj-Górska, Anna, Zander, Paul David, Boltshauser-Kaltenrieder, Petra   +6 more
core  

Ductile Extrusion Triggered by Continental Collision in NE Brazil

Terra Nova, EarlyView.
ABSTRACT The Borborema Province in northeastern Brazil hosts one of the world's largest strike‐slip shear zone networks, active during the late Neoproterozoic assembly of West Gondwana. Whether these shear zones initiated during active continental collision or as a post‐orogenic response to far‐field stresses remains debated.
L. R. Tesser, C. E. Ganade, C. R. Cioffi, J. B. Forshaw, M. Hueck, E. Celis, M. A. S. Basei   +6 more
wiley   +1 more source

Chemical composition of sandstones and paleogeodynamic reconstructions

Литосфера, 2016
The article analyzes the adequacy of compliance on paleogeodynamic nature of Upper Precambrian sedimentary associations - Bashkir meganticlinorium, Kama-Belaya aulacogene and Uchur-Maya region, received by geological methods and by using discriminant ...
A. V. Maslov, V. N. Podkovyrov, E. Z. Gareev, L. N. Kotova   +3 more
doaj   +2 more sources

High-alumina gneisses of the Chupa Formation in the Belomorian Mobile Belt: metamorphic conditions, partial melting, and the age of migmatites

Записки Горного института
Migmatized gneisses of the Chupa paragneiss Formation in the Belomorian Mobile Belt (BMB) of the Fennoscandian Shield have been studied, and the conditions of partial melting during high-grade metamorphism of the rocks were determined.
Anastasiya V. Yurchenko, Shauket K. Baltybaev, Tatyana A. Myskova   +2 more
doaj