Source provenance

Siddiqui, N.K. (2004). Sui Main Limestone: Regional geology and the analysis of original pressures of a closed-system reservoir in central Pakistan. AAPG Bulletin, 88(7), 1007-1035.

Cited by 2 units (2 published) · 3 field-level citations · 3 revision notes.

Reviewer-supplied (author N.K. Siddiqui appears to be the project reviewer 'Nusrat K.'). Correlation-chart figure + abstract reviewed, not full text. The chart is a Paleocene-Eocene correlation across the Indus Basin (Kirthar, Badin, Khairpur-Jacobabad High, Sulaiman, Trans-Indus, Kohat, Salt Range) and Jaisalmer (India), calibrated to a Ma scale; column sources are mostly oil-company well reports (OGDC/PPL/UTP/AMOCO) plus Eames 1952/58, Sun 1964, Singh 1984. Key facts: the Sui Main Limestone is a lower Eocene (Ypresian) shallow-marine carbonate, the most prolific gas reservoir south of 29N (>20 tcf recoverable across 14 fields), does not outcrop anywhere in Pakistan; reservoir-quality development is restricted, with increased clastic influx toward the northern Sulaiman Range and the Jaisalmer basin, and Lutetian-Priabonian rocks absent in the Trans-Indus Range. The chart assigns Habib Rahi/Domanda/Pirkoh/Drazinda to the KIRTHAR GROUP and shows a CHHARRAT GROUP in Kohat - a cleaner group hierarchy than this dataset currently encodes (relevant to the reviewer's taxonomy-consistency comment).

This page is the reverse of each unit's per-field citations — it shows exactly what this reference supports, making the dataset's “no source, no fact” rule browsable both ways.

Units citing this source

• Cenozoic Kirthar Group Paleogene

  Listed as a corroborating source for this unit.

• Cenozoic Sui Main Limestone Formation Paleogene
  Economic importanceGeological significanceDepositional environment
  • Age: Corroborated by Siddiqui (2004), AAPG Bulletin: the Sui Main Limestone is lower Eocene (Ypresian), consistent with the dataset's existing assignment. A closed-system carbonate reservoir; the paper analyses its original formation pressures across the central Indus fields.
  • Economic importance: Siddiqui (2004) quantifies the reservoir: >20 tcf recoverable gas across 14 discovered fields, the most prolific reservoir south of ~29°N. Recorded alongside the existing Sui/Kandhkot note; the field is not overwritten.
  • Economic importance: The lower Eocene (Ypresian) Sui Main Limestone is the most prolific gas reservoir in Pakistan south of ~29°N, with recoverable reserves exceeding 20 tcf across 14 discovered fields; it is a closed-system reservoir that does not crop out, and its chronostratigraphic equivalent on the Kirthar/Punjab platform is the (non-reservoir) Laki Formation (Siddiqui 2004).