Corrigendum to “Heavy Metals Distribution in the Bottom Sediments of Nizampatnam Bay -Lankevanidibba Coast, East Coast of India”. [Journal of Trace Elements and Minerals 6C (2023) 100092](S2773050623000459)(10.1016/j.jtemin.2023.100092)

초록

The authors regret that the structured abstract is missing which is appended below: Introduction: Heavy minerals, with densities of 2.8 g/cm³, are valuable components found in primary and secondary deposits, occurring in various geological formations worldwide. India's extensive coastline harbors economically significant placer deposits, particularly in Andhra Pradesh, showcasing concentrations of minerals like garnet, zircon, and titanium, vital for industries and research. However, research on heavy mineral distribution in southern Andhra Pradesh remains limited, warranting detailed investigation for resource evaluation and management. Objectives: The main objective of the study is to highlights the availability and concentration of various heavy minerals in different micro-environments in three fractions i.e., +60, +120 and +230 along the Govindampalli-Durgarajupatnam (GP-DP) coast, filling existing knowledge gaps. To equip the local stakeholders, policymakers, and industries with essential data and insights to facilitate informed decision-making regarding resource exploration, extraction, and management. Study area: The GP-DP coast, which is the investigation area, is located in the southeastern part of the Nellore district coast, Andhra Pradesh. It falls within the geographical coordinates of 140 0'10– 140 02'30 N latitudes and 800 08' 20 – 800 19' 00 E longitude and is included in toposheets No 66B3, 4 and 66C1, 5 (1:50000) Geological Survey of India. Methodology: In June 2016, thirty-six sediment samples were collected from six profiles in the study area, encompassing various microenvironments. Samples were processed for heavy mineral analysis across three grain size fractions (+60, +120, and +230) using sieving, chemical treatment, and microscopic examination. Heavy minerals were separated via sink and floatation method, counted using Ribbon counting method, and their weight percentages calculated. Hydraulic sorting of sediments was conducted based on density, shape, and chemical stability of heavy minerals to understand their accumulation patterns. Results and discussions: Heavy mineral analysis revealed dominant minerals such as garnet, zircon, and opaques, with concentrations varying across microenvironments. Concentrations were highest in the foreshore, indicating wave action deposition. Correlation with granulometric parameters showed heavy mineral concentration increasing with finer grain size and poorly sorted sediments. Hydraulic sorting analysis indicated complex relationships between grain size and heavy mineral variability, with dunes showing unique behaviour. ZTR/PA ratios suggested heavy minerals maintained chemical stability despite hydraulic actions. Conclusions: The total heavy mineral content in the study area varied from 3.29% to 36% with an avg. of 19.03%.The highest concentrations of heavy minerals were observed in the foreshore environment, and heavy minerals were primarily found in the fine (+230) fraction. Heavy mineral concentration increases with decreasing mean size, poorly sorted with negatively skewed grains. The authors would like to apologise for any inconvenience caused. DOI of original article: 10.1016/j.jtemin.2023.100092. © 2024 The Authors