Results 41 to 50 of about 3,632 (206)

A bajocian (Middle jurassic) marine gastropod assemblage from the badamu formation, Central Iran [PDF]

open access: yes, 2016
Nine species of gastropods are reported from the Bajocian (Middle Jurassic) part of the Badamu Formation of Central Iran. This is the first report of a gastropod assemblage of this age from the shelves of the Kimmerian Continent.
Binazadeh, Tayyeb   +2 more
core   +1 more source

EARLY NEOPROTEROZOIC CRUST FORMATON IN THE DZABKHAN MICROCONTINENT, CENTRAL ASIAN OROGENIC BELT

open access: yesГеодинамика и тектонофизика, 2017
The Dzabkhan microcontinent was defined by [Mossakovsky et al., 1994] as a cratonic terrane with an early Precambrian basement that combines highgrade metamorphic complexes of the Songino, Dzabkhan, Otgon, Baidarik, Ider and Jargalant Blocks.
V. P. Kovach   +6 more
doaj   +1 more source

Facies and sedimentary environment of the Lower Cretaceous transgressive siliciclastic and carbonate succession in the southwestern margin of central Iran, northeast of Isfahan [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2018
Introduction In this study, successions including red beds siliciclastic and the carbonate rocks of Lower Cretaceous sequence is studied at Kuh-e-Bejareh in the south western margin of Central East Iranian Microcontinent.
Zahra Mazroei Sebdani   +3 more
doaj   +1 more source

Geochemistry and petrogenesis of basaltic prisms from South of Germi city (Ardabil province) [PDF]

open access: yesپترولوژی, 2017
The basaltic prisms assemblages of Poshtsar are located in the south-eastern of Germi city and include of mafic volcanic rocks such as olivine basalt. They are outcropped with about 1000 meters thickness in the eastern part to 10 meters thicknes in the ...
Mohammad Mobashergermi, Ahmad jahangiri
doaj   +1 more source

Eurytholia plates (Problematica) from the late Silurian of the Austrian Carnic Alps [PDF]

open access: yes, 2008
A small fauna of phosphatic plates of the enigmatic organism Eurytholia bohemica [Ferretti A., Serpagli E., Storch P., 2006. Problematic phosphatic plates from the Silurian-Early Devonian of Bohemia, Czech Republic. Journal of Paleontology 80 1026–1031.],
FERRETTI, Annalisa, SERPAGLI, Enrico
core   +1 more source

Specific composition features of Kodinka Formation mudstones (Upper Devonian, the Middle Urals eastern slope)

open access: yesЛитосфера, 2017
Main subjects for study are the phase-mineral and geochemical composition specific features of Kodinka Formation mudstones. Mudstones build up laminas, beds, pack of beds and strata (up to 9 m). It`s expected that sedimentation occurred in shallow-marine
Yu. Melnichuk Oleg   +1 more
doaj   +2 more sources

Rift jump and microcontinent formation in back-arc settings [PDF]

open access: yes, 2021
<p><span>Back-arc basins often present multiple spreading centres that form one after the other (e.g. Mariana subduction zone), propagate and rotate (e.g., Lau Basin) following trench retreat. In some cases, rift jumps can create continental fragments or microcontinents (e.g., Coral Sea, Central Mediterranean, Scotia Sea ...
Valentina Magni   +3 more
openaire   +2 more sources

Geochemistry and petrogenesis of south Qorveh A-type granitoids (northwest of Sanandaj- Sirjan zone): An evidence for active continental margin tensional tectonic [PDF]

open access: yesپترولوژی, 2020
The studied area (Galali- Varmaqan) located at the northern part of the Sanandaj- Sirjan zone, south of the Qorveh city. The granitic rocks are dominated by quartz, alkali- feldspar and plagioclase.
Majid Shirmohammadi   +3 more
doaj   +1 more source

Seismological evidence for crustal-scale thrusting in the Zagros mountain belt (Iran) [PDF]

open access: yes, 2006
International audienceCrustal receiver functions computed from the records of 45 temporary seismological stations installed on a 620-km long profile across central Zagros provide the first direct evidence for crustal thickening in this mountain belt. Due
Agard   +57 more
core   +2 more sources

Inherited crustal deformation along the East Gondwana margin revealed by seismic anisotropy tomography [PDF]

open access: yes, 2016
Acknowledgments We thank Mallory Young for providing phase velocity measurements in mainland Australia and Tasmania. Robert Musgrave is thanked for making available his tilt-filtered magnetic intensity map.
A. M. Reading   +41 more
core   +2 more sources

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