Offshore sediments record the history of onshore iron ore mining in Goa State, India

Magnetic properties of the surface sediments in the Yellow River Estuary and Laizhou Bay, Bohai Sea, China: Implications for monitoring heavy metals

“…9). Notably, the present study implies that only the HMs from the natural sources can be monitored by the magnetic approach, which is different from other studies reporting that magnetic parameters can also indicate the anthropogenic HMs (Chaparro et al, 2017;Chen et al, 2020;Dong et al, 2014;Sebastian, et al, 2017;Yang et al, 2019;Zhu et al, 2016). The previous studies collected samples from the coast region or sediment core with a single source and a relatively stable depositional environment.…”

“…In addition, the method is effective in detecting the enhanced influences of human activities on estuaries and coasts. The impact of onshore iron ore mining on the ancient offshore sedimentation in the Arabian Sea was detected using the magnetic approach (Sebastian et al, 2017).…”

Microbial diversity from the continental shelf regions of the Eastern Arabian Sea: A metagenomic approach

“…The organic depositions on the continental shelf are important for carbon accumulation and play a significant role in the biogeochemical cycle ( Jacob et al, 2007 ). In recent years, the sedimentation in the Goa coast is increased due to extensive iron ore and Manganese mining activities ( Sebastain et al, 2017 ). From 2002 to 2011, the average annual Iron ore mining was around 28 million tonnes (Mt) and the mining waste was three-fold of the production value ( Sebastain et al, 2017 ).…”

“…In recent years, the sedimentation in the Goa coast is increased due to extensive iron ore and Manganese mining activities ( Sebastain et al, 2017 ). From 2002 to 2011, the average annual Iron ore mining was around 28 million tonnes (Mt) and the mining waste was three-fold of the production value ( Sebastain et al, 2017 ). Kurian et al (2009) , reported that the inner shelf of Goa has shown an enormous increase in productivity from the last five decades with the response to anthropogenic nutrients input.…”

Supplementary material to "Enigmatic Fe-Mn-fueled Anaerobic Oxidation of Methane in sulfidic coastal sediments of the Eastern Arabian Sea"

“…Previous studies (Siddiquie et al, 1981, Karisiddaiah et al, 2002 have identified gas-charged sediments along the WCSI. The sediments in the continental shelf of off Goa are characterized by high iron content due to large input of Fe oxyhydroxides in the shelf via Mandovi and Zuari estuaries, as a result of iron ore mining and processing along the West coast of India (Sebastian et al, 2017). The sedimentation rates reported from WCSI (off Goa) within a water depth of 40 m vary from 0.15 to 1.57 cm/yr (Nigam et al, 1995;Kurian et al, 2009;Mazumdar et al, 2012;Sebastian et al, 2017;Fernandes et al, 2020).…”