Results 71 to 80 of about 3,591 (216)

New Permian Paleomagnetic and Geochronologic Results From the Alxa Block: Constraints on Its Tectonic Affinity and the Closure of Paleo‐Asian Ocean

Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract The Paleo‐Asian Ocean's (PAO) closure timing and the Alxa Block's (ALB) tectonic affinity remain debated. We present new paleomagnetic and geochronologic data from Permian volcanic and sedimentary rocks in the ALB. Characteristic remanent magnetization (ChRM) directions from Early (∼282 Ma), Middle (∼268 Ma), and Late Permian (∼255 Ma) rocks ...
Wei Xu, Bo Song, Jizhong Shi, Yan Li, Baowen Wang, Xiaozhou Ye, Xiaofeng Han, Haihong Xu, Yunpeng Zhang, Huiyuan Zhang, Zhiming Sun   +10 more
wiley   +1 more source

MINERALOGY AND ZIRCON AGE OF CARBONATITES OF THE SREDNYAYA ZIMA COMPLEX (EASTERN SAYAN)

Геодинамика и тектонофизика
The Srednyaya Zima alkaline-ultramafic carbonatite complex is located in the Eastern Sayan and is a part of the area of manifestation of Neoproterozoic rare-metal alkaline-carbonatite magmatism along the southern and southeastern margins of the Siberian ...
I. R. Prokopyev, A. G. Doroshkevich, M. D. Varchenko, D. V. Semenova, I. A. Izbrodin, M. N. Kruk   +5 more
doaj   +1 more source

Precambrian Greenstone Belts of North Baffin Island, Canadian Arctic: Geochronological Constraints on Magmatism and Stratigraphy in the Rae Craton

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 10, October 2025.
Abstract Supracrustal greenstone belts of the Rae craton of north Baffin Island have been historically attributed to the Mary River Group (MRG), a key tectonostratigraphic unit of economic significance. Best‐preserved exposures of supracrustal rocks occur within the Eqe Bay Greenstone Belt.
B. M. Saumur, C.‐P. Folkesson, D. R. Skipton, J. H. F. L. Davies, N. Wodicka, S. T. Johnston   +5 more
wiley   +1 more source

Overview of early cretaceous gold mineralization in the orogenic belt of the eastern margin of the Siberian craton: geological and genetic features

Frontiers in Earth Science
The giant Verkhoyansk-Kolyma gold province, producing more than∼ 3700 t of gold, is one of the most important metallogenic provinces for orogenic gold deposits in the world. The province is located on the eastern margin of the Siberian craton.
Nikolay Goryachev, Valery Fridovsky, Valery Fridovsky   +2 more
doaj   +1 more source

On the structure and formation of earthquake sources in the faults located in the subsurface and deep levels of the crust. Part II. Deep level

Геодинамика и тектонофизика, 2018
In the part 2 of the study [Ruzhich, Kocharyan, 2017, we aimed at identifying the elements of paleoearthquake sources in the crust, which formed at the hypocentral depths in the exhumed Primorsky segment of the ancient collisional suture.
V. V. Ruzhich, G. G. Kocharyan, V. B. Savelieva, A. V. Travin   +3 more
doaj   +1 more source

Mantle heterogeneity during the formation of the North Atlantic Igneous Province: Constraints from trace element and Sr-Nd-Os-O isotope systematics of Baffin Island picrites [PDF]

, 2004
Sr-Nd-Os-O isotope and major and trace element data from ~62 Ma picrites from Baffin Island constrain the composition of mantle sources sampled at the inception of North Atlantic Igneous Province (NAIP) magmatism.
Eiler, J., Francis, D., Frei, R., Kent, A. J. R., Stolper, E. M., Woodhead, J.   +5 more
core   +1 more source

THE PHENOMENON OF RAPID ACCUMULATION OF SEDIMENTS BELONGING TO THE UDOKAN GROUP AND THE FORMATION OF THE UNIQUE UDOKAN COPPER DEPOSIT (ALDAN SHIELD, SIBERIAN CRATON)

Геодинамика и тектонофизика, 2020
We analyzed new geological and geochronological data on sedimentation and metamorphism in the junction area of the Aldan and Stanovoy Superterranes comprising the southern flank of the Siberian craton.
D. P. Gladkochub, A. M. Mazukabzov, T. V. Donskaya   +2 more
doaj   +1 more source

Receiver Function Imaging of the Mantle Transition Zone Beneath the East Sayan Mountains and Adjacent Area in Central Asia: Implications for Lithospheric Drip and Intraplate Cenozoic Volcanism

Geophysical Research Letters, Volume 52, Issue 15, 16 August 2025.
Abstract To provide constraints on the formation mechanisms of intracontinental volcanisms and intriguing lithospheric thickness variations in the East Sayan Mountains and surrounding areas, we stack P‐to‐s receiver functions to image the 410‐km and 660‐km discontinuities.
Yangyang Liao, Kelly H. Liu, Stephen S. Gao   +2 more
wiley   +1 more source

Cambrian radiation speciation events driven by sea level and redoxcline changes on the Siberian Craton. [PDF]

Sci Adv, 2023
Zhuravlev AY, Wood RA, Bowyer FT.
europepmc   +1 more source

Eurasia spreading basin to Laptev Shelf transition: structural pattern and heat flow [PDF]

, 2003
New geophysical data have become available from shipborne and satellite measurements allowing a re-evaluation of the largely unknown junction of the Arctic spreading centre and the northeastern Siberian continental margin where the transpolar mid-ocean ...
Beliaev, V. N., Drachev, S. S., Kaul, N.
core   +1 more source