shoaib Razi

This paper encompasses the detailed study on the sedimentological attributes of the Middle Jurassic Loralai Formation, Khidarzai Nala Section, Bargha Shirani, (Lat.: 31° 12 ́ 31° 27 ́N and Long.: 69° 37 ́ 69° 45 ́E) Western Sulaiman Range, District Zhob, Balochistan-Pakistan. The Middle Jurassic Loralai Formation belongs to carbonate rocks, which are widely distributed in the host area of investigated section. The present detailed sedimentological study executed on this formation is the first of its kind and covers an analysis of carbonate microfacies and diagenetic settings. The petrographic investigations revealed that its most significant microfacies include intraclastic rudstones and grainstones, skeletal, ooidal, pisoidal and peloidal grainstones, skeletal and unfossiliferous mudstones. Its diagenetic settings were, also, studied and a variety of cement types from early to late diagenetic phases were identified. An attempt has been made, as well, to highlight the significant re...