Results 31 to 40 of about 353 (180)
The structure of the Western and Central parts of the Ukrainian schield. Controversial issues
Геофизический журнал, 2018 Some controversial issues of composing the Scheme of the fault megablock tectonics of the western half of the Ukrainian shield in connection with the decision of the Interdepartmental Tectonic Committee of Ukraine on drawing up the Tectonic map of the ...
О. B. Gintov +7 more
doaj +1 more source
The Proximal Ejecta Around the Marine‐Target Lockne Impact Structure, Sweden
Journal of Geophysical Research: Planets, Volume 128, Issue 7, July 2023., 2023 Abstract Very few impact craters on Earth have preserved proximal ejecta (ejecta blanket), which when present help us to better understand the cratering processes when asteroid hits Earth. The 458 Ma old Lockne impact structure consists of a 7.5‐km wide nested crater in the crystalline basement surrounded by an approximately 3‐km wide brim developed in
Erik Sturkell +5 more
wiley +1 more source
Geology Today, Volume 39, Issue 4, Page 130-143, July/August 2023., 2023 The Central Series of the Paleocene mafic to ultramafic Rum complex is the youngest of the three main cumulate series that make up the layered igneous complex of this famed Scottish island. The Central Series lies along the Long Loch Fault and provides insights into the feeder system to the Rum intrusion at an erosion level of about two kilometres ...
Brian G.J. Upton +3 more
wiley +1 more source
Meteoritics &Planetary Science, Volume 58, Issue 6, Page 834-854, June 2023., 2023 Abstract Carbonates from the impact melt‐bearing breccia in the 2016 IODP/ICDP Expedition 364 drill core at Site M0077 were systematically documented and characterized petrographically and geochemically. Calcite, the only carbonate mineral present, is abundant throughout this deposit as five distinct varieties: (1) subangular carbonate clasts (Type A);
Nicolas D. Garroni, Gordon R. Osinski
wiley +1 more source
What lithic clasts and lithic-rich facies can tell us about diatreme processes: An example at Round Butte, Hopi Buttes volcanic field, Navajo Nation, Arizona. [PDF]
, 2021 Round Butte (Hopi Buttes volcanic field, Arizona) exposes a diatreme 170–190 m across, 190 m below the pre-eruptive surface. The central part of the massif is 130–150 m in diameter, displaying 20–30 m-high subvertical cliffs.
Latutrie, Benjamin, Ross, Pierre-Simon
core +1 more source
Metallogeny of the Lyapinsky megablock (Subpolar Urals)
NEWS of the Ural State Mining University, 2021 Purpose of the work: elucidation of the geological structure, manifestations of magmatism, geodynamics and metallogeny of one of the largest segments of the paleocontinental sector of the Lyapin megablock in the Urals. The peculiarity of the metallogenic specialization of the latter for uranium, thorium, rare metals, gold, optical quartz caused both ...
openaire +1 more source
Proceedings of the 55th ISOCARP World Planning Congress, 2019 In what way can the study of megablock typologies in the PRD deliver better insight in terms of process and scales of Chinese urbanization? In the Chinese context, the ‘collective’ has stood central to its urbanisms and processes of urbanization (Lu, 2006).
Yixuan Peng, Gerhard Bruyns, Darren Nel
openaire +1 more source
The Lapland greenstone belt: Stratigraphic and depositional features in northern Finland [PDF]
Bulletin of the Geological Society of Finland, 1987 The Lapland greenstone belt formed in a continental environment, as a result of rifting of the 3.1—3.0 Ga Saamian craton. The basin subsided to a depth of five kilometres between 3.0—2.5 Ga and contains a sequence which is subdivided into Lower, Middle ...
M. Saverikko
doaj +1 more source
Геофизический журнал, 2021 Profile 3-DV (Skovorodino-Tommot) crosses in the sublatitudinal direction the Stanovoy and Aldan megablocks of the Aldan-Stanovoy shield. As the basic elements of the Earth’s crust section along the profile 3-DV, a technique was adopted for identifying ...
V. V. Stogny, G. A. Stogny
doaj +1 more source
Геофизический журнал, 2023 To study the deep structure of the geoelectrically complex junction zone of three megablocks of the western part of the Ukrainian Shield (Volyn', Podil, and Ros'), a three-dimensional model of the central part of the Zvizdal-Zaliska and Brusyliv fault ...
T.K. Burakhovych +2 more
doaj +1 more source