Editing Geography of Qatar (section)

===Dukhan region=== 
[[File:Rawdat Jarrah separating Dukhan Sabkha from Bay of Zekreet.jpg|thumb|Landscape near the [[Dukhan Sabkha]]]]
Occupying the greater part of Qatar's western flank, this area extends {{convert|87|km}} from [[Ras Abrouq]] in the north to An Nakhsh in the south. It is characterized by complex structural units, with elevations reaching {{convert|92|m}} at Khashm An-Nakhsh and depressions as low as {{convert|-5|m}} below sea level in the [[Dukhan Sabkha]].<ref name="qencyclopedia"/> This sabkha, the largest inland salt flat in the [[Persian Gulf]], runs for approximately {{convert|20|km}}, occupies an area of {{convert|73|km2|abbr=on}},<ref>{{cite journal|url=https://royalsocietypublishing.org/doi/full/10.1098/rsta.2010.0101|title=Raman spectroscopy of the Dukhan sabkha: identification of geological and biogeological molecules in an extreme environment|author1=Howell G. M. Edwards |author2=Fadhil Sadooni |author3=Petr Vítek |author4=Jan Jehlička |journal=Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences|volume=368|publisher=Royal Society Publishing|date=13 July 2010|issue=1922|pages=3099–3107|doi=10.1098/rsta.2010.0101|pmid=20529947|bibcode=2010RSPTA.368.3099E |s2cid=7262453|access-date=23 February 2019|doi-access=free|hdl=10576/47356|hdl-access=free}}</ref> and accommodates the lowest point of Qatar at {{convert|-6|m}} below sea level.<ref name="abulali">{{cite journal|url=https://eurekamag.com/pdf/012/012125301.pdf|title=Geologic Evolution of the Dukhan salt flats in Western Qatar Peninsula, Arabian Gulf|last1=Sadiq|first1=Abdulali M.|journal=Qatar University Science Journal|issue=23|pages=41–58|year=2003|access-date=23 February 2019}}</ref> [[Jebel Nakhsh]], a notable [[Ridge|mountain ridge]] south of Dukhan, contains substantial deposits of [[gypsum]].<ref>{{cite web |url=https://www.academia.edu/19304718|title=A Historical Account of the Stratigraphy of Qatar, Middle-East (1816 to 2015) |website=Academia |author=Jacques Leblanc|page=73|date=December 2015|access-date=23 February 2019}}</ref>