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...thrusts and [[overthrust]]s. [[Anticline]]s associated with these [[fault (geology)|faults]] form traps for [[petroleum]] and [[natural gas]], which has been .../L34.html Petroleum Potential of Fergana Intermontane Depression] Internet Geology Newsletter

==Geology== ...ter, {{convert|3|to|9|m}} deep. The seal is middle Permian shale and late Permian salt. The reservoir consists of limestones with low porosities and permeabi

==Geology== ...ing coal seams. Marine conditions are reflected by [[Carboniferous]] and [[Permian]] strata that are composed mainly of limestones. In the Eastern Alborz Rang

...time an isolated continent of its own. During the [[Carboniferous]] and [[Permian]], [[Siberia (continent)|Siberia]] collided with Kazakhstania to form the [ *[http://www.jpg.co.uk/ab_jul_03_4.htm Ordovician-Permian paleogeography of Central Eurasia]

# [[Permian]] post-collisional granitoids and intraplate igneous suites. Large-scale la | year = 2007 | journal = Russian Geology and Geophysics | volume = 48 | issue = 1 | pages = 1–12

| [[Akkolka Formation]] || [[Permian]] || | [[Baigendzhi Formation]] || [[Permian]] ||

| fossil_range = Early [[Pennsylvanian (geology)|Pennsylvanian]] - Early [[Permian]] [[Category:Permian ammonites]]

...aised the [[Ural Mountains]], starting in the Late [[Carboniferous]] and [[Permian]] periods of the [[Palaeozoic]] Era, c. 323–299 and 299–251 Mya respect *[http://www.scotese.com/newpage5.htm Late Permian Period map]

| formations = [[Carboniferous]]<br/>[[Permian]]<br/>[[Devonian]] ...]] (Uralsk) in the northwest of Kazakhstan. The field was once a massive [[Permian]] and [[Carboniferous]] reef complex covering an area {{convert|30|by|15|km

==Geology== ...Carboniferous]] carbonates overlain by Lower Permian clays and the massive Permian salt.<ref name=Lisovsky/>{{rp|106}}