Browsing Scholarly literature by Subject "ferromanganese nodules"
Now showing items 41-60 of 96
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First phase monitoring studies of simulated benthic disturbance delineating movement of fine particles in the Central Indian Basin
(Taylor and Francis, 2005)Benthic disturbance due to future deep-sea polymetallic nodule mining would involve extensive sediment plume generation and resedimentation on the sea floor. In order to evaluate the effects of resedimentation on benthic ... -
Geochemical trends in the sediments and manganese nodules from a part of the Central Indian Basin
(Geological Society of India, 1994)Geochemical analyses of eighteen surface sediments samples collected from an area between 1 degree-15 degrees S latitudes and 73 degrees-87 degrees E longitudes exhibit significant variation in their chemical ... -
Geochemistry of ferromanganese micronodules and associated Mn and trace metals diagenesis at high terrigenous depositional site of middle fan region, Bay of Bengal
(Elsevier, 2003)The influence of sedimentation on the morphology, growth and geochemistry of the micronodules, and on Mn enrichment in the sediments of the Bay of Bengal has been evaluated. Mn accumulation is 307-219 mg cm u2 kyr u-1 in ... -
Grade distributions in manganese nodules of Central Indian Ocean Basin
(Current Science Association, 1989)Data concerning to geological setting physical characteristics and bulk chemical composition of the nodules sampled from CIOB were stored in the Computer Data Bank of this Institute. Bulk chemical composition of nodules, ... -
Growth rate and chemical composition of a manganese nodule from the EEZ of Seychelles
(Geological Society of India, 1989)mhe ferro-manganese nodule collected in EEZ of Seychelles yields a growth rate of 1.5 mm/10 6Y 230Th (ex)/ and 230Th (ex)/ 232Th activity ratio methods indicating very slow growth of ferro-manganese nodules. The Mn/Fe and ... -
Image analysis of seafloor photographs for estimation of deep-sea minerals
(Springer, 2010)Factors such as non-uniform illumination of seafloor photographs and partial burial of polymetallic nodules and crusts under sediments have prevented the development of a fully automatic system for evaluating the distribution ... -
India's manganese nodule mine site in the Central Indian Ocean
(Current Science Association, Bangalore, India, 1996)This commentary highlights the activities of massive exploration programme for manganese nodule deposits in the Central Indian Basin located 5 km below the ocean surface and India's claim for mine site development and ... -
Influence of bathymetry in manganese nodule pilot mine site selection: A case study from the Central Indian Basin
(Int. Soc. of Offshore and Polar-Eng.(ISOPE), Colorado, USA, 1995)Although manganese nodules are observed in all world oceans, known reserves cannot be only criterion in future mine sites selection and sizing. Detailed and accurate depth data is another major prerequisite. With the advent ... -
Influence of regional and local topography on the distribution of polymetallic nodules in Central Indian Ocean Basin
(Springer, 1988)Detailed bathymetric surveys from part of the Central Indian Ocean revealed several bathymetric features such as hills, slopes, valleys, and plains. Areas with a local relief of a few to hundreds of meters generally have ... -
Influence of seabed topography on the distribution of manganese nodules and associated features in the Central Indian Basin: A study based on photographic observations
(Elsevier, 1993)The distribution of manganese nodules and associated rock outcrops and sediment cover in the Central Indian Basin (10 degrees-16 degrees S, 73 degrees-82 degrees E), were studied from seabed photographs in relation to ... -
Influence of seamount topography on the local facies variation in ferromanganese deposits in the Indian Ocean
(Elsevier, 1988)The morphology and chemistry of ferromanganese nodules and encrustations from a seamount in the Central Indian Ocean Basin show local variations. Nodules from the summit of the seamount have sporadic distribution, are less ... -
Influence of sedimentation on enrichment of manganese and growth of ferromanganese micronodules, Bengal Fan, India
(Elsevier, 1999)Based upon down core variations in O/Mn ratio in sediment and in micronodules, Mn content, organic carbon and abundance of micronodules in two box cores from high and low sedimentation regions of the Bay of Bengal, 0-20 ... -
InRidge program: Preliminary results from the first cruise
(Current Science Association, 1998)The first cruise under India's own Ridge research initiative, InRidge collected new data on bathymetry, free-air gravity and magnetic anomalies across the ridge axis between the Vema and Zhivago transform faults in the ... -
Internal microfeatures of manganese nodules from the Central Indian Ocean
(Elsevier, 1988)The internal features of manganese nodules from abyssal hills ranging in height from 600 to 880 m and the nodules from abyssal plains in the Central Indian Ocean have been studied. Nodules from the abyssal hills show mainly ... -
Macrobenthic standing stock in the nodule areas of Central Indian Ocean Basin
(Regional Research laboratory, Bhubaneswar, 2005)Diversity, distribution and standing stock of macrofauna in the nodule areas of Central Indian Ocean Basin (CIOB) were studied during April 2003. The density ranged between 22 to 132 no.m super(-2) (mean: 55 + or - 37 SD, ... -
Manganese micronodules: A possible indicator of sedimentary environments
(Elsevier, 1993)Manganese micronodule distribution, size, internal features and chemical composition as well as the composition of associated sediments have been determined in eight sediment cores taken from the siliceous ooze area of the ... -
Manganese nodule distribution in different topographic domains of the central Indian Basin
(Taylor and Francis, 1993)Manganese nodule distribution is primarily influencEd. by seafloor topography. Nodule distribution at 479 locations vis-a-vis seabed topography is studiEd. by superimposing sampling location on the topographic profile and ... -
Manganese nodule morphology as indicators for oceanic processes in the Central Indian Basin
(Taylor & Francis, 2009)In order to understand the role of geological features in the depositional environment and the prevailing oceanic processes on the formation and characteristics of manganese nodules, a detailed morphological study of the ... -
Marine geology
(Indian Natl. Sci. Acad., New Delhi-110 002, India, 2000)Significant scientific contributions in Marine Geology in India during the Nineties have been highlighted in this paper. Sediment trap data collected in the Arabian Sea and Bay of Bengal have provided much understanding ... -
Marine mineral resources of the Central Indian Basin: Ferromanganese nodules and crusts
(Gulf Pub., Houston, USA, 1996)The morphology, mineralogy and composition of ferromanganese nodules and crusts from the Central Indian Basin and southwestern flank of the Charlsberg Ridge have been characterized from the analyses of data and samples ...