| Popis: |
The role of microbes in the precipitation of carbonates in various modern freshwater environments like lakes, rivers, and springs is currently being actively researched. Extensive research over the last few decades has documented some of the distinctive features of the freshwater microbial carbonates. However, identification of the signatures of microbes in carbonate precipitation remains a challenging task in the case of geologically ancient deposits. It is especially difficult for deposits older than the Neogene, because of diagenetic imprints on the primary fabric. Due to this limitation, the habitats of microbes are poorly constrained for a significant part of the Phanerozoic. In this study, we report the field occurrences and micro-morphological features of thin carbonate bodies encased in a thick siliciclastic alluvial succession. The succession is Early Jurassic in age and formed in a continental rift basin, the Pranhita-Godavari Gondwana Basin of peninsular India. |
