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Microfacies analysis and depositional environments of the Upper Cretaceous Fort Munro Formation in the Rakhi Nala Section, Sulaiman range, Pakistan

Rizwan, Muhammad; Hanif, Muhammad; Ali, Nowrad; Rehman, Maqsood Ur


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{
  "DOI": "10.1007/s13146-020-00639-9", 
  "abstract": "The Fort Munro Formation is 200-m-thick mixed carbonate-siliciclastic succession of Late Cretaceous (Campanian) age exposed at the Rakhi Nala Section, Sulaiman Range, Lower Indus Basin, Pakistan. The Fort Munro Formation is representing thin- to thick-bedded limestone with interbedded marls, shale and sandstone. Detailed microfacies analysis revealed the recognition of 15 microfacies types (11 carbonate and 4 sandstone). These facies were deposited on both inner and middle ramp platform. The inner ramp sediments are more widespread than the corresponding middle ramp including open-marine, skeletal shoals, semi-restricted, carbonate sand shoals and banks and lagoon depositional environments. The uppermost part of the Fort Munro Formation has received sufficient amount of siliciclasts, thereby producing a sandstone texture. These siliciclasts indicate the tectonic uplift, which thereby increases the source area rejuvenation. Therefore, a mixed carbonate-siliciclastic, moderately storm-dominated homoclinal ramp depositional environment is suggested for the Fort Munro Formation.", 
  "author": [
    {
      "family": "Rizwan", 
      "given": " Muhammad"
    }, 
    {
      "family": "Hanif", 
      "given": " Muhammad"
    }, 
    {
      "family": "Ali", 
      "given": " Nowrad"
    }, 
    {
      "family": "Rehman", 
      "given": " Maqsood Ur"
    }
  ], 
  "container_title": "CARBONATES AND EVAPORITES", 
  "id": "110202", 
  "issue": "4", 
  "issued": {
    "date-parts": [
      [
        2020, 
        1, 
        1
      ]
    ]
  }, 
  "title": "Microfacies analysis and depositional environments of the Upper Cretaceous Fort Munro Formation in the Rakhi Nala Section, Sulaiman range, Pakistan", 
  "type": "article-journal", 
  "volume": "35"
}
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