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Integrated Sequence Stratigraphy of the Middle Jurassic (Bajocian-Callovian) Chiltan Formation in the Lower Indus Basin, Pakistan

  • Sajjad AhmadEmail author
  • Abdul Wahab
  • Suleman Khan
  • Muhammad Sadiq
  • Kamil Qureshi
  • Zaid Khan
Conference paper
Part of the Advances in Science, Technology & Innovation book series (ASTI)

Abstract

Detailed sedimentological analysis of the Jurassic (Bajocian-Callovian) Chiltan Formation has been accomplished from the Middle Indus Basin, Pakistan. We have discriminated six different microfacies that deciphered a carbonate barrier-inlet shelf platform depositional setting. These facies represented the lagoonal tidal inlets (CHF 1 facies), carbonate shoals (CHF 2 facies), fore shore (CHF 3 facies), supra tidal (CHF 4 facies), wash over fans (CHF 5) and near shore (CHF 6 facies) setting. The record of the smaller benthic foraminifera (Lenticulina subalta, lenticulina vobulus and planularia protracta) confirms a middle Jurassic (Bajocian-Callovian) age of the unit. This biostratigraphic calibration suggests that the deposition of the Chiltan Formation correspond to a second order cycle (17 Ma) which encompasses a composite transgressive systems tract and various third order cycles and systems tracts. The long and short term sea level fluctuations show a close match with global sea level curve.

Keywords

Jurassic Indus basin Sequence stratigraphy Pakistan 

Reference

  1. 1.
    Haq, B.U., Hardenbol, J., Vail, P.R.: Chronology of fluctuating sea levels since the Triassic. Science 2(35), 1153–1165 (1987)Google Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Sajjad Ahmad
    • 1
    Email author
  • Abdul Wahab
    • 1
  • Suleman Khan
    • 1
  • Muhammad Sadiq
    • 1
  • Kamil Qureshi
    • 1
  • Zaid Khan
    • 1
  1. 1.Department of GeologyUniversity of Peshawar, KPKPeshawarPakistan

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