Results 1 to 10 of about 1,248 (165)

Sequence stratigraphy of the Qom Formation in the Sirjan–Abadeh region [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2021
Sequence stratigraphy of the Qom Formation deposits (in two stratigraphic sections) in the Sirjan–Abadeh region has been studied. This formation in the Sirjan area (Bujan section; with Rupelian–Chattian age and 156 m thickness), consists mainly of medium-
Ebrahim Mohammadi
doaj   +2 more sources

Temporal and spatial distribution of the Qom Formation pyroclastic deposits with special emphasis on SE Kerman Province: Their application in (tephra) event stratigraphy [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2022
This article is the first published example of the application of (tephra) event stratigraphy in the Qom Formation as well as the temporal and spatial distribution of the Qom Formation pyroclastic deposits. The presence of igneous (volcanic) associations
Ebrahim Mohammadi
doaj   +1 more source

The role of fossils in the microfacies studies and recognizing the sequence boundaries of the Qom Formation: A case study in Ghasr-e-Bahram Section, northwest part of Siahkuh, south Garmsar [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2023
Sequence stratigraphy is a branch of stratigraphy that can enable us to correlate deposits with considerable accuracy. This research aims to investigate the role of fossils in the recognition of system tracts and sequence boundaries along succession ...
Jahanbakhash Daneshian   +1 more
doaj   +1 more source

Microfacies, sedimentary environmental model and relative sea level change of marly strata of the Qom Formation in Zarrin-Abad section, South of Zanjan [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2020
In order to reconstruct the sedimentary environment of marly strata related to the upper parts of Qom Formation, one stratigraphic outcrop have been studied.
Javad Rabbani   +2 more
doaj   +1 more source

Preliminary analysis of sedimentary characteristics and facies model of M-II layer in Kazakhstan Oilfield A [PDF]

open access: yesE3S Web of Conferences, 2022
The lithologic melange accumulation of areskum formation in akshabluk area is one of the key strata in exploration. Its basement inheritance controls the whole process of Jurassic sedimentation, and the filling and leveling gradually reduces the terrain ...
Pan Xuemei
doaj   +1 more source

Global regression evidence in the Middle Miocene strata in the Zanjan area [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2022
The study of the effect of global regression on the Middle Miocene (upper parts of the Qom Formation and Lower parts of the Upper Red Formation) strata has been carried out on two stratigraphic sections in the Zanjan area, northwest Iran.
Javad Rabbani, Afshin Zohdi
doaj   +1 more source

Genesis of Tozlou Pb-Zn Occurrence (South of Zanjan): Evidence from Geology, Mineralization, and Geochemistry

open access: yesJournal of Economic Geology, 2023
Tozlou Pb-Zn mineralization, ~250-300m long, and ~50m thick, is hosted by limestone units of the Qom Formation. The main mineralization zone occurred as vein-veinlets and vug infill textures, where mineralization is observed as Pb-Zn-bearing barite veins
Hamed Daneshvar   +3 more
doaj   +1 more source

Application of elemental data in reconstruction of paleoredox conditions of the Qom Formation at Khani Abad section, southeast of Kashan [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2018
Introduction The abundances of minor-elements in carbonate rocks depend on the noncarbonate materials, including detrital minerals, accessory authigenic precipitates, noncarbonate skeletal material, organic matter, phases formed during diagenesis and the
Elham Asadi Mehmandosti   +2 more
doaj   +1 more source

Investigation and analysis of factors affecting the development of physical-spatial structure of Qom city with a futures research approach [PDF]

open access: yesجغرافیا و توسعه, 2020
Today, Awareness of the spatial structure of cities and the reasons that dominate its spatial development in different periods is necessary to control its expansion.
Sayed Ali Hosseini   +2 more
doaj   +1 more source

Structural evolution of the Lachinag synformal anticline at the southwestern termination of the Dochah Fault, west of Qom Province, northern Central Iran [PDF]

open access: yesعلوم زمین خوارزمی, 2023
The Lachinag synformal anticline is located to the northwest of the Mil anticline and the western end of the Dochah Fault in northern central Iran. This synform includes the terminal members of the Qom Formation (members E and G) and the Upper Red and ...
Mohadese Ajami   +6 more
doaj  

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