Abstract
Depositional environment of the Krol group varied temporally from subtidal in the Manora to intertidal in the Sleepy Hollow times. The conditions that succeeded were peritidal in the Ayarpatta and supratidal in the Narainnagar times. These conditions were the main controlling factors in the growth and development of the algal stromatolites. The Manora formation, due to subtidal conditions, and the Sleepy Hollow formation, due to detrital influx, are almost devoid of stromatolites. The carbonates of the Ayarpatta formation representing a peritidal complex possess columnar and oncolitic stromatolites, while the sediments of the Narainnagar formation characterized by supratidal features contain blistered, domal and crinkled-laminar forms. The types and sizes of stromatolites therefore are governed by the depositional conditions prevailing in the sedimentary basin.
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Misra, S.B. Depositional environment of the Krol Group of the Nainital area and its impact on the stromatolites. Proc. Indian Acad. Sci. (Earth Planet Sci.) 93, 447–464 (1984). https://doi.org/10.1007/BF02843261
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DOI: https://doi.org/10.1007/BF02843261