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Geochemical characterization of the Krishna–Godavari and Mahanadi offshore basin (Bay of Bengal) sediments: A comparative study of provenance

หน่วยงาน National Institute Of Oceanography (NIO), India

รายละเอียด

ชื่อเรื่อง : Geochemical characterization of the Krishna–Godavari and Mahanadi offshore basin (Bay of Bengal) sediments: A comparative study of provenance
นักวิจัย : Mazumdar, A. , Kocherla, M. , Carvalho, M.A. , Peketi, A. , Joshi, R.K. , Mahalaxmi, P. , Joao, H.M. , Jisha, R.
คำค้น : sediments , Basins , Rare earths , Clay minerals , Weathering
หน่วยงาน : National Institute Of Oceanography (NIO), India
ผู้ร่วมงาน : -
ปีพิมพ์ : 2558
อ้างอิง : Marine and Petroleum Geology, vol.60; 18-33 , http://drs.nio.org/drs/handle/2264/4685
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : -
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

The Krishna–Godavari and Mahanadi rivers drain the east coast of India and deposit the sediment load into the Krishna–Godavari and Mahanadi offshore basins along the western margin of the Bay of Bengal. Here we report the bulk major, trace and rare earth element (REE) compositions and clay mineralogy of the fine grained sediments from the cores collected on board JOIDES Resolution and Marion Dufresne as part of India's gas hydrate program. The geochemical composition and clay mineralogy of sediments have been used to constrain the provenance. The results show that the Mahanadi sediments are primarily derived from the felsic rocks belonging to the late Archean-early Proterozoic peninsular gneissic complexes, whereas the Krishna–Godavari sediments are derived from the mixing of late Archean-early Proterozoic peninsular gneissic complexes and Late Cretaceous Deccan basalt sources. This paper presents the first comparative analysis of provenance of the Krishna–Godavari (K–G) and Mahanadi offshore basin sediments. The sediment geochemistry enables distinction of specific contributing sources, which could potentially be related to modern climatic and geomorphological conditions. The present study could also provide the opportunity for high resolution paleoclimatic analysis using clay mineralogical contents and weathering indices

บรรณานุกรม :
Mazumdar, A. , Kocherla, M. , Carvalho, M.A. , Peketi, A. , Joshi, R.K. , Mahalaxmi, P. , Joao, H.M. , Jisha, R. . (2558). Geochemical characterization of the Krishna–Godavari and Mahanadi offshore basin (Bay of Bengal) sediments: A comparative study of provenance.
    : National Institute Of Oceanography (NIO), India.
Mazumdar, A. , Kocherla, M. , Carvalho, M.A. , Peketi, A. , Joshi, R.K. , Mahalaxmi, P. , Joao, H.M. , Jisha, R. . 2558. "Geochemical characterization of the Krishna–Godavari and Mahanadi offshore basin (Bay of Bengal) sediments: A comparative study of provenance".
    : National Institute Of Oceanography (NIO), India.
Mazumdar, A. , Kocherla, M. , Carvalho, M.A. , Peketi, A. , Joshi, R.K. , Mahalaxmi, P. , Joao, H.M. , Jisha, R. . "Geochemical characterization of the Krishna–Godavari and Mahanadi offshore basin (Bay of Bengal) sediments: A comparative study of provenance."
    : National Institute Of Oceanography (NIO), India, 2558. Print.
Mazumdar, A. , Kocherla, M. , Carvalho, M.A. , Peketi, A. , Joshi, R.K. , Mahalaxmi, P. , Joao, H.M. , Jisha, R. . Geochemical characterization of the Krishna–Godavari and Mahanadi offshore basin (Bay of Bengal) sediments: A comparative study of provenance. : National Institute Of Oceanography (NIO), India; 2558.