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northwestern Iran

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Journal Article
Journal: GSA Bulletin
Published: 17 August 2023
GSA Bulletin (2024) 136 (3-4): 1569–1586.
... pipe in the Angouran deposit of northwestern Iran, which may provide a good example for the recognition of vanished evaporites, halokinetic structure, and associated MVT mineralization. The Angouran deposit contains 4.7 Mt of sulfide ore with 27.7% Zn, 2.4% Pb, and 110 g/t Ag, and 14.6 Mt carbonate ore...
FIGURES
First thumbnail for: Vanished evaporites, halokinetic structure, and Zn...
Second thumbnail for: Vanished evaporites, halokinetic structure, and Zn...
Third thumbnail for: Vanished evaporites, halokinetic structure, and Zn...
Journal Article
Published: 01 October 2021
Russ. Geol. Geophys. (2021) 62 (10): 1107–1126.
...S. Hassanpour Abstract —The Lahroud Ophiolite in northwestern Iran contains extensive zones of Paleozoic ophiolite as remnants of the Paleo-Tethys oceanic crust. The principal rock units are gabbro overlain by pillow basalt, which is intruded by granites and interbedded with pelagic sedimentary...
FIGURES
First thumbnail for: Lahroud, a Paleo-Tethys Remnant in <span class="se...
Second thumbnail for: Lahroud, a Paleo-Tethys Remnant in <span class="se...
Third thumbnail for: Lahroud, a Paleo-Tethys Remnant in <span class="se...
Journal Article
Journal: Palynology
Published: 02 January 2021
Palynology (2021) 45 (1): 15–26.
...Elias Ramezani; Taravat Talebi; Kamaledin Alizadeh; Anoushirvan Shirvany; Behnam Hamzeh’ee; Hermann Behling Abstract Palynological analysis and radiocarbon dating of a short sediment core from a high-altitude mire in the Arasbaran area of northwestern Iran reveals long-term vegetation dynamics...
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First thumbnail for: Long-term persistence of steppe vegetation in the ...
Second thumbnail for: Long-term persistence of steppe vegetation in the ...
Third thumbnail for: Long-term persistence of steppe vegetation in the ...
Journal Article
Published: 16 June 2020
Geochemistry: Exploration, Environment, Analysis (2020) 20 (4): 425–439.
...Ali Imamalipour; Samaneh Barak; Farzaneh Mami Khalifani Abstract The Tavreh mercury prospect, a listwaenite-type alteration/mineralization system, is located c . 90 km west of Khoy in northwestern Iran. Tavreh is hosted within the Khoy ophiolite zone. Three types of listwaenites have been...
FIGURES
First thumbnail for: Quantifying mass changes during hydrothermal alter...
Second thumbnail for: Quantifying mass changes during hydrothermal alter...
Third thumbnail for: Quantifying mass changes during hydrothermal alter...
Journal Article
Published: 03 December 2018
Geochemistry: Exploration, Environment, Analysis (2019) 19 (4): 347–357.
... copper-gold deposit, northwestern Iran: implications for exploration of blind mineral deposits . Geochemistry: Exploration, Environment, Analysis , 18 , 120 – 131 , https://doi.org/10.1144/geochem2017-029 Imamalipour , A. , Yosefi , M. & Karimlo , M. 2013 . Geochemistry...
FIGURES
First thumbnail for: Geochemical zonality coefficients in the primary h...
Second thumbnail for: Geochemical zonality coefficients in the primary h...
Third thumbnail for: Geochemical zonality coefficients in the primary h...
Series: Reviews in Economic Geology
Published: 01 January 2018
DOI: 10.5382/rev.20.09
EISBN: 9781629491189
... (~24.5 tonnes [~0.8 Moz] of Au in ore with an average grade of 3.7 g/t Au) and Zarshouran (~110 tonnes of Au [~3.5 Moz] in ore with an average grade of 4.5 g/t Au) Carlin-style gold deposits in the Takab region of northwestern Iran occur within the active geothermal field of the Miocene Urumieh-Dokhtar...
Journal Article
Published: 18 December 2017
Geochemistry: Exploration, Environment, Analysis (2018) 18 (2): 120–131.
... porphyry copper deposit) in northwestern Iran and some of other porphyry copper deposits in Iran. In this study, we used the geochemical data obtained from the cores to determine the relationship between samples and depth of erosion of the Masjed Daghi porphyry deposit. Exploration rock geochemistry...
FIGURES
First thumbnail for: Vertical geochemical zonation in the Masjed Daghi ...
Second thumbnail for: Vertical geochemical zonation in the Masjed Daghi ...
Third thumbnail for: Vertical geochemical zonation in the Masjed Daghi ...
Journal Article
Published: 05 August 2014
Bulletin of the Seismological Society of America (2014) 104 (5): 2512–2528.
... Western United States and California Worldwide shallow crustal 0–200 5.0–8.5 450–900 The Azerbaijan province, which is located in the northwest of Iran, is one of the most active seismic regions in the country. It has experienced many seismic events during the historical and instrumental...
FIGURES
First thumbnail for: Test of Goodness of the NGA Ground‐Motion Equation...
Second thumbnail for: Test of Goodness of the NGA Ground‐Motion Equation...
Third thumbnail for: Test of Goodness of the NGA Ground‐Motion Equation...
Journal Article
Published: 01 November 2004
Geochemistry: Exploration, Environment, Analysis (2004) 4 (4): 307–315.
...A. Karimzadeh Somarin Abstract The Mazraeh Cu–Fe skarn deposit, located in the Ahar region of northwestern Iran, is currently being mined and contains reserves of about 400,000 tons grading 1.2 wt% Cu. The deposit contains both exoskarn formed within the calcareous wall rock and endoskarn formed...
FIGURES
First thumbnail for: Geochemical effects of endoskarn formation in the ...
Second thumbnail for: Geochemical effects of endoskarn formation in the ...
Third thumbnail for: Geochemical effects of endoskarn formation in the ...
Journal Article
Published: 01 September 1997
Seismological Research Letters (1997) 68 (5): 753–756.
...Mehdi Zaré © 1997 by the Seismological Society of America 1997 AN INTRODUCTION TO THE EVENT The Ardebil earthquake of February 28, 1997 ( M w 6.0) struck a populated area in the Ardebil province of Iran (west of the Caspian Sea; Figure 1) at 12:57:28 GMT (16:27:28 local time...
Image
(A) Geological map of the Angouran mine in northwestern Iran (modified from Daliran et al., 2013). (B) A–B–C cross section showing that the Neoproterozoic–Cambrian marble-schist sequence was thrust onto the Oligocene–Miocene sedimentary and volcanic rocks (modified from Daliran et al., 2009). (C) Photograph shows the Neoproterozoic–Cambrian marble thrust onto the Miocene tuffaceous rocks, southwest of the Angouran open pits. (D) E-W–trending cross section showing the sulfide and nonsulfide mineralization in a discordant breccia pipe (modified from Boni et al., 2007).
Published: 17 August 2023
Figure 2. (A) Geological map of the Angouran mine in northwestern Iran (modified from Daliran et al., 2013 ). (B) A–B–C cross section showing that the Neoproterozoic–Cambrian marble-schist sequence was thrust onto the Oligocene–Miocene sedimentary and volcanic rocks (modified from Daliran et al
Image
The position of Kalan peatland in northwestern Iran, along with other sites discussed in this study. The map was produced using Landsat imagery in an ArcGIS environment.
Published: 02 January 2021
Figure 1. The position of Kalan peatland in northwestern Iran, along with other sites discussed in this study. The map was produced using Landsat imagery in an ArcGIS environment.
Image
Location of the study area in northwestern Iran, Azerbaijan province, Maku district, and locations of the study sites with respect to the various parent rock and soil materials
Published: 01 June 2019
Fig. 1 Location of the study area in northwestern Iran, Azerbaijan province, Maku district, and locations of the study sites with respect to the various parent rock and soil materials
Image
Overview of northwestern Iran with topography from Shuttle Radar Topography Mission (SRTM) data with 90 m resolution (Jarvis et al. 2008). The star marks the position of the Ahar‐Varzeghan earthquake sequence. Faults are taken from Copley and Jackson (2006). NTF, North Tabriz fault; ABS, Apsheron–Balkhan sill; NAF, North Anatolian fault; EAF, East Anatolian fault. Arrows give Global Positioning System velocities and 95% confidence ellipses relative to Eurasia selected from Djamour et al. (2011). Black triangles mark broadband stations of the Iranian National Seismic Network and the Turkish National Broadband Network. Black inverted triangles mark short‐period stations of the Iranian Seismic Telemetry Network. White symbols are additional stations from local and regional networks used by A. Ghods et al. (unpublished manuscript, 2014; see Data and Resources) for relocating aftershocks (triangles, Institute for Advanced Studies in Basic Sciences [IASBS]; reversed triangles, Iranian Seismological Center [IRSC]; diamonds, Kandilli Observatory and Earthquake Research Institute [KOERI]; circle, Incorporated Research Institutions for Seismology [IRIS]; rectangles, Building and Housing Research Center [BHRC]). Inset shows the mechanisms for both mainshocks according to international agencies: Global Centroid Moment Tensor Project (Global CMT), U.S. Geological Survey (USGS), GEOFON Global Seismic Network (GFZ).
Published: 10 February 2015
Figure 1. Overview of northwestern Iran with topography from Shuttle Radar Topography Mission ( SRTM ) data with 90 m resolution ( Jarvis et al. 2008 ). The star marks the position of the Ahar‐Varzeghan earthquake sequence. Faults are taken from Copley and Jackson (2006) . NTF , North Tabriz
Published: 01 October 2008
DOI: 10.1130/2008.2444(07)
... Arabia-Eurasia convergence is accommodated in the Zagros Mountains of southwestern Iran and in the seismic belts of the central Caspian, Alborz, and Kopeh Dagh of northern Iran. The Zagros is a NW-trending fold-and-thrust belt made up of a 6–15-km-thick sedimentary pile, which overlies...
Journal Article
Published: 01 June 1979
Bulletin of the Seismological Society of America (1979) 69 (3): 773–823.
...R. C. Quittmeyer; K. H. Jacob abstract Both historical (noninstrumental) and modern (instrumental) data are compiled and critically reviewed to document the seismicity of Pakistan, Afghanistan, northwestern India, southeastern Iran, and neighboring areas. Earthquakes occurring between 1914 and 1965...
Journal Article
Journal: GSA Bulletin
Published: 28 April 2025
GSA Bulletin (2025)
...Hossein Azizi; Masayo Minami; Narges Daneshvar; Yoshihiro Asahara; Hiroyuki Matsuzaki; Takeyasu Yamagata; Reza Deevsalar; Masataka Aizawa; Ryuichi Shinjo Late Miocene−Quaternary volcanoes in northwestern Iran, characterized by andesitic to dacitic compositions including adakitic rocks with high Sr...
Journal Article
Journal: Economic Geology
Published: 01 January 2025
Economic Geology (2025) 120 (1): 119–135.
...Khadijeh Mikaeili; Matthew I. Leybourne; Somayeh Sharifiyan Abstract The Anjerd porphyry Cu(-Mo) deposit, located in the Qara-Dagh–Sabalan metallogenic zone, is one of the largest Cu(-Mo) deposits in northwestern Iran. This deposit is related to the relatively shallow emplacement of quartz...
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First thumbnail for: Evolution of the Magmatic-Hydrothermal System of t...
Second thumbnail for: Evolution of the Magmatic-Hydrothermal System of t...
Third thumbnail for: Evolution of the Magmatic-Hydrothermal System of t...
Journal Article
Published: 24 July 2019
Canadian Journal of Earth Sciences (2019) 56 (8): 848–856.
... -type, and Glyptotendipes pallens -type, suggests a lake-level decrease and a more vegetalized aquatic environment. We compare and contrast the chironomid record of Arjan with a similar record from northwestern Iran. The palaeoclimatic significance of the record, at a local and regional scale...
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First thumbnail for: A major hydrobiological change in Dasht-e Arjan We...
Second thumbnail for: A major hydrobiological change in Dasht-e Arjan We...
Third thumbnail for: A major hydrobiological change in Dasht-e Arjan We...
Journal Article
Published: 01 December 2011
Bulletin of the Seismological Society of America (2011) 101 (6): 3020–3031.
... of horizontal measurements. We simulated the corresponding Wood–Anderson seismograms for over 133,000 available waveforms. After preliminary analysis, the data set was subdivided in order to derive a local magnitude scale for northwestern Iran. The distance attenuation curve, station correction terms...
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First thumbnail for: Empirical Distance Attenuation and the Local Magni...
Second thumbnail for: Empirical Distance Attenuation and the Local Magni...
Third thumbnail for: Empirical Distance Attenuation and the Local Magni...