Results 71 to 80 of about 8,464 (208)

Palynology and paleoecology of Sarcheshmeh and Sanganeh formations at Baghak section (east of Kopeh-Dagh)

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2014
1-Introduction The Kopeh-Dagh as an inverted basin (Allen et al. 2003) is extended from the east of the Caspian Sea to NE Iran, north Afghanistan and Turkmenistan.
Mahjooneh Keshmiri   +4 more
doaj  

Features of the hydrogeological stratification of oil and gas bearing deposits in the western part of the Yenisei-Khatanga basin

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2020
The article presents results and findings of the research into stratification of the hydrogeological section of western areas of the Yenisei-Khatanga basin localized in the Siberian Arctic zone. The identified two hydrogeological structural stages in the
D. A. Novikov, E. V. Borisov
doaj   +1 more source

The deepest splits in Chloranthaceae as resolved by chloroplast sequences [PDF]

open access: yes, 2003
Evidence from the fossil record, comparative morphology, and molecular phylogenetic analyses indicates that Chloranthaceae are among the oldest lineages of flowering plants alive today. Their four genera (ca.
Renner, Susanne S., Zhang, Li-Bing
core   +1 more source

Geochemical and Seismic Constraints on the Role of Mud Diapirs in Petroleum Migration and Accumulation in the Recôncavo Basin, NE Brazil

open access: yesJournal of Petroleum Geology, Volume 49, Issue 2, Page 433-447, April 2026.
ABSTRACT In the Recôncavo Basin, Northeast of Brazil, mud diapirs have been reported for decades, but their role within the basin's petroleum system remains poorly constrained. Here, we combine 2D seismic interpretation, field observations, and organic geochemical analyses of rocks and oil seeps to investigate the relationship between diapirism and ...
Cora Mattos   +3 more
wiley   +1 more source

The making of pure quartzose sand in continental interiors: Paraná River (Brazil and Argentina)

open access: yesSedimentology, Volume 73, Issue 3, Page 802-837, April 2026.
ABSTRACT As part of a comprehensive project on sedimentary processes in South America, this study focuses on sediment generation in the intracratonic Paraná Basin and monitors the evolution of sand composition along the Paraná River from central Brazil to the Río de la Plata estuary in Argentina.
Eduardo Garzanti   +5 more
wiley   +1 more source

Biostratigraphic correlation of the western and eastern margins of the Labrador-Baffin Seaway and implications for the regional geology [PDF]

open access: yesGeological Survey of Denmark and Greenland Bulletin, 2016
New analyses of the palynological assemblages in 13 offshore wells on the Canadian margin and six on the West Greenland Margin, in conjunction with onshore data, have led to a new biostratigraphic framework for the Cretaceous–Cenozoic strata of the ...
Henrik Nøhr-Hansen   +2 more
doaj  

First Record of Chimaeroid Fish (Holocephali: ’Edaphodontidae’) from the Lower Cretaceous of the Middle Volga Region [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Серия Науки о Земле
The record of a mandibular tooth plate of the chimaeroid fish Ischyodus sp. from the Lower Cretaceous deposits of the north of the Saratov Volga River Right Bank is described. The presumed age of the find is the Lower Aptian.
Popov, Evgeniy Valerievich   +1 more
doaj   +1 more source

DINOFLAGELLATE CYST STRATIGRAPHY OF THE SCISTI A FUCOIDI FORMATION (EARLY CRETACEOUS) FROM PIOBBICO, CENTRAL ITALY: CALIBRATED EVENTS FOR THE ALBIAN OF THE TETHYAN REALM

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2022
Rich and well preserved organic-walled dinoflagellate cyst assemblages recovered from the Scisti a Fucoidi Formation at Piobbico, central Italy are presented.
STEFANO TORRICELLI
doaj  

The Middle East Late Aptian Tectonic Event: a debate [PDF]

open access: yesGeoArabia, 2006
Joerg Mattner, Moujahed Al-Husseini
openaire   +1 more source

Geosites of Northern Mountainous Adygeya (Southwestern Russia): A Novel Vision

open access: yesGeosciences
Territorial inventories of geosites remain on the international agenda, and they can help in acquiring information for solving pure geological research tasks.
Anna V. Mikhailenko, Dmitry A. Ruban
doaj   +1 more source

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