Petrofacies Evolution of Bayana Basin Sandstones of Mesoproterozoic Delhi Supergroup, Bharatpur District, Rajasthan, Northwestern India

• 作者: Abul Hasnat Masood Ahmad Chayanika Saikia Syed Mohammad Wasim
• 来源期刊: 地质学期刊(英文)
• 学科: 地球科学
• 关键词: Petrofacies EVOLUTION Bayana BASIN MESOPROTEROZOIC Bharatpur DISTRICT (India)
• 年，卷（期）: 2012,（4）
• 页码范围: 260-270
• 页数: 11页
• 分类号: P5

摘要

The paper embodies results of petrofacies, detrital mineralogy and textural aspects of Bayana Basin sandstones of the Delhi Supergroup. These sandstones consisting of various types of quartz, feldspar, mica, rock fragments and heavy minerals are medium to fine grained and moderately well sorted. These sediments are generally subangular to subrounded with low sphericity. Various factors responsible for modification of the original detrital composition of the sandstones have been critically examined. Distance of transport is one of the factors which control the composition at the time of deposition. The plots of petrofacies in QtnFnL, QmnFnLt, QpnLvnLs and QmnPnK ternary diagrams suggest mainly basement uplift source (Craton interior) in a rifted continental margin basin setting, which has also received sediment input from recycled orogen provenance.