Results 41 to 50 of about 1,392,562 (335)
Учёные записки Казанского университета: Серия Естественные науки, 2021 The oil and gas potential prospects of the Magnitogorsk trough in the South Urals were studied and substantiated using the data of the geological survey and deep-well drilling.
A.M. Tyurin +4 more
doaj +1 more source
Geology, 2018 Phanerozoic large igneous provinces (LIPs) have a significant influence on global climate changes and mass extinction events (MEEs). Most of the Global Boundary Stratotype Section and Points in the Phanerozoic international chronostratigraphic scale are ...
Shuan‐Hong Zhang +5 more
semanticscholar +1 more source
EARLY VISEAN EUXINIC BASIN IN THE SYSTEM OF PALEO-TETHYS (IN THE LIGHT OF MODERN DATA) [PDF]
Геологія і корисні копалини Світового океану, 2020 Among ancient euxinic basins of different age and geotectonic position there is one basin deserving of special attention. This is Early-Visean basin in the system of Paleo-Tethys which possess by striking similarity with the Black sea.
A.E. Lukin
doaj +1 more source
Iraqi Geological Journal, 2022 Black shale of Tithonian (Late Jurassic)-Berriasian (Early Cretaceous) Chia Gara Formation have been investigated by clay minerals and geochemistry (total organic carbon, major and trace elements) to determine the chemical associations and the ...
Faraj H. Tobia, Rezhin K. Mustafa
doaj +1 more source
Учёные записки Казанского университета: Серия Естественные науки, 2021 The current research aims to reconstruct sources of the rocks and pyroclastic input in the epeiric sea of the Eastern Russian Platform in the Latest Jurassic.
K.I. Nikashin, S.O. Zorina
doaj +1 more source
A carbonate-banded iron formation transition in the Early Protorezoicum of South Africa [PDF]
, 1992 Seven new and two resurveyed stratigraphic sections through the important carbonate-BIF transition in Griqualand West are presented and compared with six published sections.
Altermann +23 more
core +1 more source
Boreas, Volume 52, Issue 1, Page 42-59, January 2023., 2023 Palynological and sedimentological analyses were performed on the sediment core HH16‐1205‐GC retrieved from the central Isfjorden, West Spitsbergen. The sequence, which spans the last 7000 years, revealed an overall cooling trend with an important climate shift between 4.4 and 3.8 cal. ka BP, in addition to millennial‐scale oscillations.
Camille Brice +4 more
wiley +1 more source
Black shale deposition during Toarcian super-greenhouse driven by sea level [PDF]
Climate of the Past, 2013 One of the most elusive aspects of the Toarcian oceanic anoxic event (T-OAE) is the paradox between carbon isotopes that indicate intense global primary productivity and organic carbon burial at a global scale, and the delayed expression of anoxia in ...
M. Hermoso, F. Minoletti, P. Pellenard
doaj +1 more source
Metal enrichment in lithologically complex black shales: a case study from the Tremadocian of NE Estonia [PDF]
Estonian Journal of Earth Sciences, 2021 Significantly elevated U, Mo, Zn and Pb contents characterize the Early Ordovician black shales in the Sillamäe area, NE Estonia. The presence of silty interlayers with sulphidic mineralization and authigenic carbonates suggests unique physicochemical ...
Rutt Hints +4 more
doaj +1 more source
Geochemistry and origin of organic-rich sediment veins in fractured granitic basement, Helmsdale, Sutherlandshire, UK [PDF]
, 2017 Acknowledgements MB is in receipt of a PhD studentship from the Petroleum Technology Development Fund of Nigeria. LB is supported by NERC grant NE/M010953/1. C. Taylor, W. Ritchie and J. Johnston provided skilled technical support.
Baba, Mas'Ud +3 more
core +1 more source