The Gravity Field and Crustal Structure of Iran

Dehghani, G. A.; Makris, J.

doi:10.1127/njgpa/168/1984/215

Cited by 151 publications

(101 citation statements)

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“…Based on Bouguer anomaly maps, Dehghani & Makris (1984) computed a coarse depth to the Moho map and determined Moho depths around 40 km in the Mesopotamian foreland and a maximum around 50 km beneath the Main Zagros Fault near our transect. A more precise modelling of the Bouguer anomaly data conducted by Snyder & Barazangi (1986) shows a profile near our cross-section with crustal thickening from 40 km beneath the Mesopotamian foreland to ∼ 60 km beneath the Main Zagros Fault.…”

Section: C Estimates Of Crustal Thicknessmentioning

confidence: 99%

Crustal-scale cross-sections across the NW Zagros belt: implications for the Arabian margin reconstruction

et al. 2011

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-Quantified balanced and restored crustal cross-sections across the NW Zagros Mountains are presented in this work integrating geological and geophysical local and global datasets. The balanced crustal cross-section reproduces the surficial folding and thrusting of the thick cover succession, including the near top of the Sarvak Formation (∼ 90 Ma) that forms the top of the restored crustal cross-section. The base of the Arabian crust in the balanced cross-section is constrained by recently published seismic receiver function results showing a deepening of the Moho from 42 ± 2 km in the undeformed foreland basin to 56 ± 2 km beneath the High Zagros. The internal parts of the deformed crustal cross-section are constrained by new seismic tomographic sections imaging a ∼ 50 • NE-dipping sharp contact between the Arabian and Iranian crusts. These surfaces bound an area of 10 800 km 2 that should be kept constant during the Zagros orogeny. The Arabian crustal cross-section is restored using six different tectonosedimentary domains according to their sedimentary facies and palaeobathymetries, and assuming Airy isostasy and area conservation. While the two southwestern domains were directly determined from well-constrained surface data, the reconstruction of the distal domains to the NE was made using the recent margin model of Wrobel-Daveau et al. (2010) and fitting the total area calculated in the balanced cross-section. The Arabian continental-oceanic boundary, at the time corresponding to the near top of the Sarvak Formation, is located 169 km to the NE of the trace of the Main Recent Fault. Shortening is estimated at ∼ 180 km for the cover rocks and ∼ 149 km for the Arabian basement, including all compressional events from Late Cretaceous to Recent time, with an average shortening rate of ∼ 2 mm yr −1 for the last 90 Ma.

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Section: C Estimates Of Crustal Thicknessmentioning

confidence: 99%

Crustal-scale cross-sections across the NW Zagros belt: implications for the Arabian margin reconstruction

et al. 2011

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“…Investigation of the Burguer gravity field of NW Iran shows that the gravity increases from east to the west from -150 to -100 m Gal indicating a decreasing crustal thickness (Dehghani and Makris, 1983). The thickness of the crust under the Eslamy peninsula located in the central part of Lake Urmia is about 41 km, and it increases to about 48 km towards the east and west of the peninsula.…”

mentioning

confidence: 99%

Quaternary travertine ridges in the Lake Urmia area: active extension in NW Iran

Mohajjel¹,

Taghipour²

2014

Turkish J Earth Sci

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“…The third continent-continent collision zone is along eastern boundary of Lut Plain-Gonabad province (22) that it known as mezotethyan suture zone. Base on gravimetric survey of Iran [26], all of them have thick-skinned tectonics. These have formed a broad mountain chain with more than 1200 km length and 400 km width from the southern part of Caspian sea to Black sea.…”

Section: Discussionmentioning

confidence: 99%

Physiographic-Tectonic Zoning of Iran’s Sedimentary Basins

Arian¹

2013

OJG

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Base on geological history evaluation using regional stratigraphy, sedimentary environments, magmatic activities, metamorphism and structural trend in Iran, physiographic-tectonic zoning map of Iran's sedimentary basins has prepared. This map has prepared to point out the basement tectonics role in Iran. It contains twenty-four different provinces. Iran has composed from different plates: Arabian plate in south and west, Cimmerian manipulated in north and east, Eurasian plate in northeast margin. Cimmerian manipulated at least can be divided to the smaller part, East-Central Iran and North-Central Iran microcontinents. There are evidences for thick-skinned tectonics in the border zones of these plates and microcontinents, especially in Sanandaj-Sirjan overthrust belts that it formed by crustal stacking wedges. Also, Neoproterozoic-Phanerozoic Tectonic column in the Arabian, Cimmerian and Eurasian plates under Iran Country area have introduced.

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The Gravity Field and Crustal Structure of Iran

Cited by 151 publications

References 0 publications

Crustal-scale cross-sections across the NW Zagros belt: implications for the Arabian margin reconstruction

Crustal-scale cross-sections across the NW Zagros belt: implications for the Arabian margin reconstruction

Quaternary travertine ridges in the Lake Urmia area: active extension in NW Iran

Physiographic-Tectonic Zoning of Iran’s Sedimentary Basins

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