Results 21 to 30 of about 33,629 (250)

Ages from the “Mogod Formation” of the Permian–Triassic igneous rocks in the Sayan–Baikal belt, northern Mongolia [PDF]

open access: yes, 2022
Late Paleozoic–Early Mesozoic volcano-plutonic rock unit at the southern margin of the Sayan–Baikal belt, Mongolia is a significant factor in understanding the Paleozoic–Mesozoic arc system along the Siberian continental margin.
NURAMKHAAN, Manchuk   +4 more
core   +1 more source

Polish Palaeobotany: 750 Million Years of Plant History as Revealed in a Century of Studies. Palaeozoic Macrofossils

open access: yesActa Societatis Botanicorum Poloniae, 2022
During the Palaeozoic Era, plants conquered the land and covered greater and greater areas from coastal lowlands to highlands. Palaeobotanical data based on macroremains from Polish Palaeozoic strata complete and enrich the picture of these processes ...
Grzegorz Pacyna, Maria Barbacka
doaj   +1 more source

Stratigraphy, sedimentary environment and geochemistry of the Ruteh Formtaion in Qharkhotlou region, south-west of the Zanjan [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2019
The Ruteh Formation in the Qharkhotlou region (southwest of Zanjan) mainly consists of 52 m sandy limestones and cream to grey thin to medium-bedded limestones.
Farzaneh Nouri Nav   +3 more
doaj   +1 more source

Sedimentation conditions and clast transport during the formation of sedimentary paleobasins in the north of Irkutsk Oblast and river network formation

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2023
Background. Changes in the composition of clastic material reflect changes in both the paleogeographic environment and clast transport paths. In turn, this indicates changes in the conditions of regional development.
N. A. Orlova, M. V. Orlov
doaj   +1 more source

Trace Fossils in Permian Rocks of English Riviera UNESCO Global Geopark [PDF]

open access: yesGeoconservation Research, 2021
The Permian breccias, conglomerates and sandstones of the English Riviera UNESCO Global geopark were deposited in quite harsh, desert environments just north of the Permian Equator.
Malcolm Hart, Christopher Smart
doaj   +1 more source

Postoperative care of symphysiotomy performed for severe shoulder dystocia with fetal demise

open access: yesCase Reports in Women's Health, 2017
Background: Shoulder dystocia is an obstetric emergency which occurs in 0.2–3% of all births ACOG Committee on Practice Bulletins-Obstetrics and The American College of Obstetrician and Gynecologists (2002) .
Joy Anderson   +2 more
doaj   +1 more source

Evolution and resource potential of Permian source rocks in the southern depression of the South Yellow Sea Basin

open access: yesShiyou shiyan dizhi, 2023
The Permian source rocks in the southern depression of the South Yellow Sea Basin have been proved to be fair-good source rocks. Based on the analysis of recent Paleozoic oil and gas exploration and research results, the thermal evolution and hydrocarbon
Qian CAO   +6 more
doaj   +1 more source

Microfacies, depositional environment, sequence stratigraphy and diagenetic process affected the Doroud Formation in the Eram Section (south Neka), north flank of central Alborz [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2020
The Permian deposits (Doroud Formation) are exposed in a wide area of central Alborz. A stratigraphic section of Permian deposits in the Eram section (South Neka) has been selected for the study of facies, depositional environments, sequence stratigraphy,
Hamideh Noroozpour
doaj   +1 more source

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