Results 41 to 50 of about 8,820 (215)

Late Paleoproterozoic-Neoproterozoic multi-rifting events in the North China Craton and their geological significance: A study advance and review

, 2015
An important Paleoproterozoic mobile belt event took place in the North China Craton (NCC), termed the Hutuo Movement. This event has been interpreted to represent cratonic reworking characterized by rifting-subduction-collision processes.
Zhai, Mingguo, Peng, Peng, Meng, Qingren, Hu, Bo, Zhao, Taiping   +4 more
core   +1 more source

Detrital zircons from Paleoproterozoic (meta-)sedimentary rocks on the northern margin of the North China Craton and tectonic implications

, 2023
The Paleoproterozoic strata on the northern margin of the North China Craton (NCC) comprise a relatively intact low-grade (meta-)sedimentary sequence, but whether there are breaks in the sequence and the tectonic setting in which the sequence was ...
Chen, Nancy Hui-Chun, Zhao, Guochun
core   +1 more source

Petrogenesis and tectonic implications of the late Paleoproterozoic (ca. 1.7 Ga) post-collisional magmatism in the southwestern Gyeonggi Massif at Garorim Bay, South Korea

Journal of Asian Earth Sciences: X, 2021
The Precambrian basement of the Gyeonggi Massif in the central Korean Peninsula consists mainly of Paleoproterozoic (2.0–1.8 Ga) gneisses. In this study, we present petrological, zircon U–Pb age and Hf isotope, and whole-rock geochemical and Sr–Nd–Pb ...
Ji-In Kim, Sung Hi Choi
doaj   +1 more source

Paleoproterozoic evolution of Fennoscandia and Greenland

Episodes, 2008
The Paleoproterozoic evolution of Fennoscandia and Greenland can be divided into major rifting and orogenic stages. The Paleoproterozoic rifting of Fennoscandia started with 2.505‐2.1 Ga, multiphase, southwest-prograding, intraplate rifting. Both Fennoscandia and Greenland experienced 2.1‐ 2.04 Ga drifting and separation of their Archean cratons by ...
Raimo Lahtinen, Adam A. Garde, Victor A. Melezhik   +2 more
openaire   +2 more sources

Enlargement of the area of the Timpton Large Igneous Province (ca. 1.75 ga) of the Siberian craton

Геодинамика и тектонофизика, 2019
We present new geochronological data on dolerites from the Chaya dyke swarm of the Baikal inlier of the Siberian craton. The U‐Pb dating of baddeleyite from one dyke located at the SW end of the Chaya dyke swarm yielded an age of 1752±6 Ma, similar to ...
D. P. Gladkochub, T. V. Donskaya, R. E. Ernst, U. Söderlund, A. M. Mazukabzov, M. N. Shokhonova   +5 more
doaj   +1 more source

Provenance and depositional age of Paleoproterozoic metasedimentary rocks in the Kuluketage Block, northern Tarim Craton: Implications for tectonic setting and crustal growth

, 2015
Precambrian geology of the Tarim Craton, especially for the crustal evolution, is poorly constrained. Paleoproterozoic metasedimentary rocks are extensively exposed in the Kuluketage Block, northern Tarim Craton, and thus have recorded abundant ...
Yuan, C., Long, X., Sun, M, Long, X, Hu, A, Hu, A., Wilde, Simon, Sun, M., Yuan, Chao, Hu, Aiqin, Sun, Min, Wilde, SA, Long, Xiaoping, Wilde, Simon A., Yuan, C   +14 more
core   +1 more source

Temporal and Hf isotope geochemical evolution of southern Finnish Lapland from 2.77 Ga to 1.76 Ga [PDF]

Bulletin of the Geological Society of Finland, 2012
The southern Finnish Lapland area in the central part of the Fennoscandian shield is a geologically complex zone comprising several Archean blocks and Paleoproterozoic supracrustal belts all of which are intruded by voluminous Paleoproterozoic granites ...
L.S. Lauri, T. Andersen, J. Räsänen, H. Juopperi   +3 more
doaj   +1 more source

Vetreny belt as a geological heritage of unique paleoproterozoic tectonomagmatic processes in the Fennoscandin shield

Известия высших учебных заведений: Геология и разведка
We presented the history of discovery and development of geological hypotheses about the conditions of formation of one of the largest Paloproterozoic structures of the Baltic Shield  — the Vetreny Belt.
S. V. Mezhelovskaya, К. I. Yushin, А. D. Mezhelovsky   +2 more
doaj   +1 more source

Mafic-ultramafic intrusions of Matokulma, Palojärvi, and Hongonniittu within the Central Finland Granitoid Complex with special reference to their petrogenesis and ore potential [PDF]

Bulletin of the Geological Society of Finland
We describe three previously unknown or poorly studied mafic-ultramafic intrusions (Matokulma, Palojärvi, Hongonniittu) from the south-central part of the Paleoproterozoic Central Finland Granitoid Complex (CFGC).
Seppo Karvinen, Hannu V. Makkonen, Perttu Mikkola, O. Tapani Rämö, Hannu Huhma, Matti Niskanen   +5 more
doaj   +1 more source

Using synthetic models to understand the detecting ability of ground‐penetrating radar for water‐conducting structures in the bedrock of formerly glaciated site

Near Surface Geophysics, Volume 24, Issue 5, Page 669-692, October 2026.
Abstract Utilizing synthetic models for the interpretation of ground‐penetrating radar (GPR) profiles can aid in the detection of hydrogeological structures by identifying their signatures. In this study, finite difference (FD) forward modelling was used to understand the detection ability of 50 MHz GPR for (1) the quaternary deposit–bedrock contact ...
Annika Katarina Åberg, Salla Eeva, Emilia Koivisto, Susanne Charlotta Åberg, Seija Kultti, Kirsti Korkka‐Niemi   +5 more
wiley   +1 more source