Determine folding mechanism of Lali structure, northern Dezful, Zagros, Iran
Author(s):
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Lali sub-surface structure, with a NW-SE Zagros trending is located in Dezful Embayment. To determine the folding mechanism, structural geometric parameters including limbs dip, amplitude, wavelength, and crestal length were determined in four stages during deformation. In order to investigate the lateral folding mechanism, these geometric parameters were analyzed in three parts in the Lali structure including northwest, central and southeast. Lali structure in all three sections, show detachment folding mechanism. At the initial stage, due to the rheology of the region's stratigraphic units, the folding mechanism was fault-bend fold and due to the thickness of incompetent units, folding mechanism changes from the fault-bend fold to fault detachment fold and growth of this structure continues with this mechanism. As the deformation continues, detachment folding, the Dahlstrom type inclined to migration type. By identifying the folding mechanism of the Lali structure, determination of the detachment depth was necessary with two computational and graphical methods. Therefore, the depth of this surface was estimated at about 7500-8500 m for Lali structure. This amount is determined at the maximum thickness of the stratigraphic sequence of the region due to the migration of incompetent units to the core of the Lali structure.
Keywords:
Language:
English
Published:
Iranian Journal of Earth Sciences, Volume:11 Issue: 2, April 2019
Pages:
113 to 125
magiran.com/p2014952
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یکساله به مبلغ 1,390,000ريال میتوانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
- حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران میشود.
- پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانههای چاپی و دیجیتال را به کاربر نمیدهد.
دسترسی سراسری کاربران دانشگاه پیام نور!
اعضای هیئت علمی و دانشجویان دانشگاه پیام نور در سراسر کشور، در صورت ثبت نام با ایمیل دانشگاهی، تا پایان فروردین ماه 1403 به مقالات سایت دسترسی خواهند داشت!
In order to view content subscription is required
Personal subscription
Subscribe magiran.com for 70 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!