Results 31 to 40 of about 119 (100)

First High‐Precision U–Pb CA–ID–TIMS Age of the Chuanlinggou Formation, North China Craton: Implications for Global Correlations of Black Shales and the Statherian/Calymmian Boundary

Geophysical Research Letters, Volume 51, Issue 18, 28 September 2024.
Abstract The Chuanlinggou Formation in the northern North China preserves the world's earliest multicellular eukaryote microfossils. Here we present a high‐precision zircon U–Pb CA–ID–TIMS age of 1,641.7 ± 1.2 Ma for a tuff layer within the black shales of the Chuanlinggou Formation.
Shuan‐Hong Zhang, Sandra L. Kamo, Richard E. Ernst, Guo‐Hui Hu, Qi‐Qi Zhang, Hafida El Bilali, Yue Zhao   +6 more
wiley   +1 more source

Late-orogenic gold deposits of Egypt

Горные науки и технологии, 2018
Egypt belongs to states developing its mineral resource base. Gold-bearing territory of Egypt is located within the Nubian-Arabian shield in the Neoproterozoic collision zone of transverse thrusts.
Hani Sharafeldin Elsayed
doaj   +1 more source

KIMBERLITE-LIKE ROCKS OF THE URIK-IYA GRABEN, EASTERN SAYAN REGION: MINERAL COMPOSITION, GEOCHEMISTRY AND FORMATION CONDITIONS

Геодинамика и тектонофизика, 2020
The study of the Bol’shaya Tagna alkaline-carbonatite massif and adjacent areas was focused on the mineral and chemical compositions of minerals, the distribution of petrogenic and trace elements in pyroxene-free alkaline picrites in veins and dikes ...
V. B. Savel'eva, Yu. V. Danilova, E. P. Bazarova, B. S. Danilov   +3 more
doaj   +1 more source

THE SOUTHERN FRAGMENT OF THE SIBERIAN CRATON: “LANDSCAPE” HISTORY OVER TWO BILLION YEARS

Геодинамика и тектонофизика, 2015
In the state-of-the-art geology, concepts of evolution of interrelated geodynamic and biotic events throughout the history of the Earth have been developed (Fig. 1). Research results on sediments, bio-stratigraphy and geodynamics of the southern fragment
Arkady M. Stanevich, Irina M. Mashchuk, Anatoly M. Mazukabzov, Anatoly A. Postnikov, Tatiana A. Kornilova   +4 more
doaj   +1 more source

BOUNDARY BETWEEN THE TIMANIAN AND URALIAN TECTONIC CYCLES: RESULTS OF DATING OF DETRITAL ZIRCONS FROM BASAL HORIZONS OF THE LOWER PALEOZOIC SYNRIFT COMPLEX OF THE POLAR URALS, AND IGNEOUS ROCK AGE DATA REPORT

Геодинамика и тектонофизика
The Upper Cambrian-Lower Ordovician terrigenous strata, unconformably overlying the Upper Riphean-Vendian rocks of the Timanide orogen in the north of the Urals, and contemporaneous bimodal volcanics and intrusive rocks are considered complexes marking ...
A. A. Soboleva, N. Yu. Nikulova, V. B. Khubanov   +2 more
doaj   +1 more source

DEEP STRUCTURE, TECTONICS, EVOLUTION AND HYDROCARBON POTENTIAL OF THE NORTH-WESTERN SHELF OF THE BLACK SEA ALONG 31°20’ E

Геологія і корисні копалини Світового океану, 2021
A density modeling of the north-western shelf of the Black Sea along 31°20’ E was carried out. According to its results, a complex block structure of the area is determined, which is closely connected with the history of its development.
Kozlenko M.V.
doaj   +1 more source

The Timan-Pechora basin. The structure and main stages of development

Georesursy, 2017
The lack of complete inheritance in the history of the Timan-Pechora basin development has led to a discrepancy between the basement surface plans and the individual sub-levels and their complexes. In the lower part of the section, the structures inherit
A.V. Stoupakova
doaj   +1 more source

Island arc–back-arc basin evolution: implications for Late Riphean–Early Paleozoic geodynamic history of the Sayan–Baikal folded area

Russian Geology and Geophysics, 2009
Abstract We suggest a more rigorous approach to paleogeodynamic reconstructions of the Sayan-Baikal folded area proceeding from update views of the origin and evolution of island arcs and back-arc basins. Modern island arcs and attendant back-arc basins form mainly by trench rollback caused by progressive subduction of negatively buoyant
Yu.A. Zorin, E.V. Sklyarov, V.G. Belichenko, A.M. Mazukabzov   +3 more
openaire   +2 more sources

U-Pb ZIRCON GEOCHRONOLOGY FROM THE GREATER CAUCASUS PALEOZOIC COMPLEXES: NEW DATA AND TECTONIC IMPLICATIONS

Геодинамика и тектонофизика
New data have been obtained on the U-Pb LA-ICP-MS age of detrital zircons from the Middle-Late Carboniferous and Early-Middle Permian molasses of the Greater Caucasus.
V. A. Kamzolkin, A. V. Latyshev, V. B. Khubanov, A. V. Chistyakova, M. Yu. Shur, R. V. Veselovskiy, I. A. Nesterova, Yu. P. Vidyapin   +7 more
doaj   +1 more source

Temporal sequence of geodynamic development processes in the territory of Ukraine from the Eoarchean to Anthropogen

Геофизический журнал, 2017
Survey data of geodynamic studies, completed during the latest 20 years in Ukraine for most of its regions, have been generalized in order to summarize the results of regional studies into geo-historical line from Eoarchean to Anthropogen.
O.B. Gintov
doaj   +1 more source