Depositional environments of Ranger Limestone (Pennsylvanian), north-central Texas

Conference · Tue Mar 01 04:00:00 EST 1983 · Am. Assoc. Pet. Geol., Bull.; (United States)

OSTI ID:6444517

Ehrhart, T P

The Ranger Limestone was deposited on the broad shallow Eastern shelf of the Midland basin during Missourian time. The sequence of alternating carbonate and terrigenous sediments comprising the Ranger Limestone is reflective of the overall cyclicity exhibited by the Canyon Group. An analysis of the interrelationships of the facies produced a framework for reconstructing the depositional history. Earliest carbonate deposition in the Ranger appears to have been initiated on local topographic highs of probable minor relief. Phylloid algae are abundant biotic constituents in the Ranger Limestone and probably played a key roll in the carbonate buildup. The Ranger Limestone is composed primarily of sediments that represent four major depositional environments. The carbonate environments recognized include an inner shelf, a transitional inner shelf, and a restricted inner shelf. These carbonate accumulations are laterally restricted by distal delta-front deposits of the Perrin delta complex. A multivariate statistical analysis based on point-count data of lithologic and biologic constituents was utilized in the delineation of facies within the Ranger Limestone. On the basis of the detailed petrographic study four facies were defined. These facies are: (1) algal-echinoid-bryozoan wackestone, (2) algal wackestone, (3) lime mudstone, and (4) calcareous shale.

• Research Organization: Mobil Exploration and Producing Service, Dallas, TX
• OSTI ID: 6444517
• Report Number(s): CONF-8304200-
• Conference Information: Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Journal Volume: 67:3
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200 -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
58 GEOSCIENCES
580100* -- Geology & Hydrology-- (-1989)
CARBONATE ROCKS
DEPOSITION
FEDERAL REGION VI
GEOLOGIC AGES
GEOLOGIC FORMATIONS
GEOLOGIC HISTORY
LIMESTONE
NORTH AMERICA
PALEOZOIC ERA
PENNSYLVANIAN PERIOD
ROCKS
SEDIMENTARY ROCKS
TEXAS
USA