Geology of the Cuddapah Basin and its lithostratigraphy. (a) Sketch geological map of the Cudddaph Basin showing the sub-basins, and the boundary thrusts of . Proterozoic Cuddapah basin, on the eastern margin of the Dharwar craton is an intracratonic basin of the Indian shield (Fig. 1). The Eastern Ghats mobile belt. The Cuddapah Basin in Andhra Pradesh is a remarkable tectonic and orogenic belt of the unfossiliferous Precambrian rocks of Peninsular India. The paper.
|Published (Last):||9 September 2008|
|PDF File Size:||12.49 Mb|
|ePub File Size:||19.28 Mb|
|Price:||Free* [*Free Regsitration Required]|
The western half of the basin is undeformed and consists of four sub-basins, the Papaghni, Kurnool, Srisailam and Palnad. Nallamalai fold belt is demarcated from the undeformed western sub-basins by the prominent fault lineament called the Rudravaram Cuddapay along which cleavage begins to develop in the Cuddapah sediments, which become intensely deformed towards the boundary thrust in the east.
The Papaghni and Kurnool sub-basins are geographically interlinked, but were sites of deposition hasin different times, the Papaghni sub-basin containing lower Cuddapah sediments, and the Kurnool sub-basin containing the younger Kurnool sediments that overlie the Cuddapah sequence with a major unconformity.
Cuddapsh paper reviews the stratigraphy and structure of the rocks of the Cuddapah System and Kurnool Series as originally proposed by King and gives the author’s conclusions on the detailed structure and tectonics of the Basin. Article Tools Print this article.
Cuddapah Basin | NDR – National Data Repository India
The crescent shaped, easterly concave and N-S trending Cuddapah basin Fig. The basin extends for a length of about km along the arcuate eastern margin with a mean width of km, and is the second largest Purana basin of Penninsular India, after the great Vindhayan basin.
The Cuddapah Basin in Andhra Pradesh is a remarkable tectonic and orogenic belt of the unfossiliferous Precambrian rocks of Peninsular India. The arcuate north, south and western boundary of the Cuddapah basin marks the profound uncomformity called Eparchaean Unconformity in early literature on basement granites enclosing the Eastern greenstone belts in Kadiri, Veligallu and Tsundupalle in the south, and Raichur, Gadwal and Peddavuru in the north.
Felsic volcanics and tuffs are intercalated with sediments at many horizons. The author recommends further detailed structural mapping, especially in the eastern half of the basin, for solving the unsolved problems in the Cuddapah stratigraphy and structure.
The relation of the structural elements to the localization of mineral deposits in the Cuddapah Basin is discussed and the necessity for their precise interpretation for exploring curdapah depth extension of the ore mineralization is stressed.
Gupta Gold Medal L. Wadia Endowment Lecture G. Email the author Login required.
Sawkar endowment for Teachers training V. Naqvi Gold Medal K.
Karanth Endowment Lecture T. Future Challenges in Earth Vaidyanadhan Award Endowment Lecture C. A north-plunging low-amplitude asymmetrical synclinorium having a gently dipping western limb and intensely folded, overfolded and thrusted eastern limb is the major structural element.
Progress Report of G. Prahalad Rao Memorial Lecture Dr. A giant basic dyke swarm underlies the basin in the west from Chittoor in the south to Mahbubnagar in the north. The early sediments of the basin are interspersed with basic volcanics and sills.
Muthuswami Memorial Lecture C. How to cite item. This site is best viewed using current versions of Firefox v. Cuddapah Basin Basin Introduction: Mahadevan Endowment Lecture R.
Suryaprakash Rao Endowment Lecture K. Email this article Login required. Symposium on the Cuddapah Basin and its Equivalents. The basin is well known for its mineral potential in the form of limestones and dolomites, bedded and vein barites, hasin asbestos and steatite, besides occurrences of base metals, diamond, phosphorite, uranium and abundant building and ornamental stones.
Tectonics of the Cuddapah Basin | Narayanaswami | Geological Society of India
This is further complicated by a major domal upwarp across the middle of the basin marked by monocjinal flexures of the Kurnool strata in Gani Kalawa area; culminations and depressions at Jammalamadugu, Giddaluru and Srisailam plateau; Eshwarakupam dome of the lower Cuddapahs in the northern part of the Nallamalai hills; and granite domes of Vinukonda area in the north-east extremity. Subscription Login to verify subscription Purchased Articles.
The arcuate eastern margin is marked by a prominent boundary thrust, which is parallel to the Nellore schist belt, Vasin Ghats mobile belt and the East Coast. Srisailam sub-basin contains upper Cuddapah sediments and Palnad sub-basin exposes only the younger Kurnool sequence. The eastern half of the Cuddapah basin is occupied by the Nalamallai fold belt consisting of upper Cuddapah sediments. Cuddapah basin is characterized by quartzite-carbonate-shale cycles cuddxpah an aggregate thickness that is estimated to vary between 6 and 12 km.