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Petrological studies of Kunduluru syenite intrusive, of Andra Pradesh, India

  • Unique Paper ID: 173075
  • Volume: 11
  • Issue: 9
  • PageNo: 1779-1784
  • Abstract:
  • The Kunduluru syenite body [81°21'15"N- 17°41'45"E], located within the Eastern Ghat Mobile Belt (EGMB) in Andhra Pradesh, India, is an important geological feature associated with alkaline intrusions. The body is primarily composed of leucocratic syenite with a porphyritic to granular texture, and exhibits significant feldspar content, particularly K-feldspar (orthoclase and microcline perthite), along with plagioclase and minor quartz. Mafic minerals such as amphibole, pyroxene, and biotite are present in subordinate amounts, contributing to the rock's mineral diversity. Accessory minerals like zircon, sphene, and apatite are found in trace quantities, while secondary alterations, such as calcite and muscovite, occur in certain sections. The syenites exhibit a high silica content, with a clear dominance of salic minerals, indicating the oversaturated nature of the magma. The intrusive body, with a sharp contact to the surrounding granulitic rocks (gneisses and charnockites), stretches approximately 1 km in length and is situated near a fault lineament trending NE-SW. These syenites reflect the petrogenesis of alkaline magmatic processes in the region and contribute valuable insights into the tectonic history of the area. Field and petrographic studies highlight the role of tectonic forces and crustal processes in the formation of this alkaline intrusion, offering a glimpse into the geological evolution of the Eastern Ghat region.
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  • ISSN: 2349-6002
  • Volume: 11
  • Issue: 9
  • PageNo: 1779-1784

Petrological studies of Kunduluru syenite intrusive, of Andra Pradesh, India

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