Folding and Faulting in Irankuh Mine Area, Isfahan

فصلنامه علمی-پژوهشی علوم زمین, 2015

Researches in Earth Sciences, 2019

Petrology, 2017

The Eocene dykes in the north and the west of Zahedan exposed into the flysch and Zahedan granitoid rocks in the Sistan suture zone. These rocks, including mafic dykes, ultramafic and felsic are mostly alkaline in nature and sometimes are contaminated. The dykes in discussion, display mostly porphyritic and glomeroporhyric textures. Plagioclase, hornblende and biotite are the main phases as well as the matrix of the rocks. The presence of rounded plagioclase and corrosion Gulf of quartz, normative changes and variation in minor and trace elements are indicative of contamination with continental crust. Enrichment of LREE relative to HREE and the lack of Eu anomaly are important characteristics of all of the studied rocks. High ratios (La/Sm)N, and (La/Yb)N and(Sm/Yb)N and the alkaline nature of most of the samples, indicate a melting process about 1 percent of a mantle with garnet lherzolite composition. Such conditions may be completion of subduction of Sistan oceanic lithosphere b...

فصلنامه علمی-پژوهشی علوم زمین, 2016

فصلنامه علمی-پژوهشی علوم زمین, 2016

2014

2015

This paper has focused on landslide hazard and risk zonation in the critical Ziarat watershed. Varnes equation and combination of Hazard map, elements at risk map and vulnerability map were used in the preparation of the risk map. Two quantitative models, including multivariate statistical)logistic regression(and LNRF model were used in the preparation of the hazard map. After applying the rate to the classes of parameters, Landslide hazard zonation was prepared for each of the models. The prior model was selected using four indices, including Quality summation)Qs(, Precision of the predicted results)P(, Receiver Operating Characteristic)ROC(and Chi-Square test and used in preparation of risk zonation. Results indicated that the logistic regression model shows a better performance for landslide hazard zonation and 13.63 and 9.04 percent of Ziarat watershed-including Ziarat village-were located in a high and very high zone of hazard and risk maps respectively.

فصلنامه علمی علوم زمین, 2012

2019

نرماشیر در صدر اسلام، یکی از پنج ولایت کرمان بود. اما توجه باستان‌شناسان به بم و جیرفت سبب غفلت از نرماشیر شده و شناخت کافی از سفال اسلامی نرماشیر وجود ندارد. عدم شناخت سفال نرماشیر از یک‌سو، و نقش سفال در گاهنگاری و شناخت تغییرات فرهنگی از دیگر سو، نشانگر ضرورت این پژوهش است. پرسش‌ها این‌ست که گونه‌های سفال اسلامی در نرماشیر چیست و به چه ادواری تعلّق دارند؟ فراز و فرود حیات در نرماشیر و روابط فرامنطقه‌ای آن براساس داده‌های سفالی چگونه بوده‌ است؟ ویژگی‌های تولید و سبک محلّی سفال در نرماشیر چیست؟ اهداف پژوهش عبارتنداز: مطالعه‌ی سفال اسلامی نرماشیر و شواهد تولید، گونه‌شناسی و گاهنگاری مقایسه‌ای و نسبی سفال‌ها و تبیین روند تداوم حیات در نرماشیر. روش گردآوری داده‌ها، میدانی-اسنادی، و روش پژوهش توصیفی-تحلیلی است1. برپایه‌ی نتایج، سفال اسلامی نرماشیر شامل گونه‌های: ساده‌ی بی‌لعاب، نقش‌کنده، افزوده، قالب‌زده، مُهری، شبه پیش‌ازتاریخی، لعابدار تک‌رنگ، نقش کنده یا افزوده زیرلعاب، گلابه‌ای، لعاب‌پاشیده، اسگرافیتو، نقاشی زیرلعاب، نقاشی روی لعاب، زرین‌فام و آبی‌و‌سفید است. این گونه‌ها، ارتباطات فرهنگی با: جیرفت، غبیرا، سیرجان، میناب، کیش، سیراف، نیشابور، اسفراین، ری، اصفهان، قصرابونصر، مرودشت، سی‌سخت، بویراحمد، شوش، رأس‌الخیمه امارات، مُسندَم عمان، حضرموت یمن، قلعه بحرین، بصره، سامرا، رقّه و لشکری‌بازار را نشان می‌دهند. برخی نمونه‌های سفال نرماشیر وارداتی و تعدادی تولید محلّی، اما تقلیدی هستند. نمونه‌های قالب‌زده‌ی بی‌لعاب، تولید محلّی و دارای نقوش کاملاً محلّی هستند. همچنین، حیات شهر نرماشیر از دوره‌ی ساسانی آغاز شده، و در دوره‌ی‌ سلاجقه‌ی کرمان و قراختاییان به اوج می‌رسد و تا دوره‌ی تیموری تداوم داشته است؛ اما جمعیت آن در دوره‌ی صفوی کاهش می‌یابد و پس از صفویان متروک شده و تعدادی روستا در دشت باقی ‌می‌ماند. In the early Islamic sources, Narmashir has introduced as one of the five main cities of Kerman and a part of the southeast economic exchange network. But it is unknown because archaeologists have often focused on the Bam and Jiroft. The questions are: what are the types of Islamic ceramics in the Narmashir, and what periods are they related to? How does the ups and downs of life in the Narmashir and its transnational cultural relations? What are the features of local ceramic production in the Narmashir plain? The purposes of the research are: “the study of Islamic ceramic and production evidence in the Narmashir”, “typology and relative chronology of ceramics”, and “explaining the periods of the prosperity of Narmashir”. The data have collected via “documentary and field” method, and the research method is “descriptive-analytical”. Based on the results, the ceramic types in Narmashir include the unglazed simple wares, wares with carving or added motifs, molded wares, pseudo-prehistoric ceramics, monochrome glaze, underglaze carving or added motifs, slip-painted wares, Sgraffiato, underglaze or overglaze painting, lusterware, and blue and white wares. These types of ceramics show the cultural relations with Jiroft, Gobayra, Sirjan, Soghan, Minab, Kish, Siraf, Nishapur, Esfahan, Rayy, Qasr-e Abu-Nasr, Marvdasht, Pasargadae, Sisakht, Boyer Ahmad, Susa, Ras al-Khaimah, Musandam, Hadramaut, Bahrain, Basra, Samarra, Raqqa, and Lashkari Bazar. Some samples of ceramics are imported in Narmashir. Some others are local, but they are imitated from foreign samples. The unglazed molded wares are locally produced and they have localized motifs. Also, the life of the old city of Narmashir has started from the Sassanid era, it peaked during the Saljuq and Qara Khitai period, and continued until the Timurid. But, its population declined during the Safavid period, and it has abandoned after the Safavids. So, only a few villages remained in the plain.

2018

This research was aimed to determine the grazing behavior of Tali goat, as the dominant livestock, in the Zaminsang rangelands of Hormozgan province for four years starting from 2006. The indices examined in this study included the time of livestock entry to and exit from rangelands, the daily distance moved by the livestock, the livestock path, maximum and average livestock speed, and the time spent for livestock rest, movement and grazing. To determine the mentioned indices, the GARMIN GPS was used and closed with a special belt behind a threeyear-old goat. The GPS was activated when the livestock exited the barn. Then, at the end of the day, its data were extracted in the Ilwis software. The path of livestock movement was determined by the shepherds. According to the results, significant differences were found for the average speed of livestock in the fourth year, and the movement time and rest time in the fourth and fifth months, while no significant difference was found for other behavioral characteristics of livestock grazing. Moreover, during the study period, 31 to 39 percent of the time the livestock moved in the rangeland was dedicated to grazing.