The role of lithology and tectonic structure in evaluation of karst, variation of discharge and quality of karst springs location in Abe-garm Qazvin area
Author(s):
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
The study area is located 90 Km south-west of Qazvin in the structure zone of central Iran. The rock units of the area are comprised of a vast variety of carbonate, clastic and pyroclastic rocks, with age of Cambrian to Oligomiocene, that have significantly outcropped in the area. This research is based on assessment of 369 springs around the Avaj-Abegarm region. 23 of them are karstic springs that are located in the limestone of Qom formation, Lar formation and the limestone of Cretaceous. The discharge variation of these springs is affected by lithology, degree of crushing and tectonic fracturing, degree of karstification of carbonate rock, amount of precipitation and type of aquifer in the region. Based on chemical analysis done on 5 samples that were taken from large karstic springs in the area, the type and facies of spring's water are sodium-bicarbonate and sodium-chloride. Hydrochemistry of karstic aquifers in the area is influenced by solubility of carbonate rock of Qom formation and Lar formation, surface recharge from Upper red formation mixed with upwelling of deep brine in Cretaceous carbonate rock that probably have hydrothermal geneses.
Keywords:
Language:
Persian
Published:
Journal of Iranian Association of Engineering Geology, Volume:3 Issue: 3, 2011
Pages:
1 to 12
magiran.com/p1868454
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.
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!