Sediment geochemistry of coastal environments, southern Kerala, India: implication for provenance
Late Quaternary sediments representing the floodplain, estuary and offshore environments of southern Kerala were investigated to infer provenance. The grain size reveals the dominance of sand to silty clay, clay to clayey silt and clayey silt in the floodplain, estuary and offshore sediments, respec...
| Main Authors: | , , , |
|---|---|
| Format: | Journal Article |
| Published: |
Springer
2018
|
| Online Access: | http://hdl.handle.net/20.500.11937/67183 |
| _version_ | 1848761498424311808 |
|---|---|
| author | Varghese, T. Nageshrao, P. Raghavendramurthy, N. Ramasamy, Nagarajan |
| author_facet | Varghese, T. Nageshrao, P. Raghavendramurthy, N. Ramasamy, Nagarajan |
| author_sort | Varghese, T. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Late Quaternary sediments representing the floodplain, estuary and offshore environments of southern Kerala were investigated to infer provenance. The grain size reveals the dominance of sand to silty clay, clay to clayey silt and clayey silt in the floodplain, estuary and offshore sediments, respectively. The chemical index of alteration (CIA) values and A-CN-K plot attributes to high, moderate and low weathering in floodplain, estuary and offshore regions, respectively. The SiO 2 /Al 2 O 3 values lesser than Post-Archean Australian Shale indicate low to moderate maturity for the estuarine and offshore sediments. The geochemical immaturity indicates its derivation from low to moderately weathered source rocks. The major and trace elemental ratios and discriminant function diagrams attribute that the sediments were derived from intermediate to felsic source rocks. The enrichment of Cr and Ni concentration in the sediments compared to the upper continental crust, related to the contribution of orthopyroxenes, weathered from charnockite and garnets from the granulite terrain, respectively. |
| first_indexed | 2025-11-14T10:32:38Z |
| format | Journal Article |
| id | curtin-20.500.11937-67183 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:32:38Z |
| publishDate | 2018 |
| publisher | Springer |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-671832018-08-21T07:47:56Z Sediment geochemistry of coastal environments, southern Kerala, India: implication for provenance Varghese, T. Nageshrao, P. Raghavendramurthy, N. Ramasamy, Nagarajan Late Quaternary sediments representing the floodplain, estuary and offshore environments of southern Kerala were investigated to infer provenance. The grain size reveals the dominance of sand to silty clay, clay to clayey silt and clayey silt in the floodplain, estuary and offshore sediments, respectively. The chemical index of alteration (CIA) values and A-CN-K plot attributes to high, moderate and low weathering in floodplain, estuary and offshore regions, respectively. The SiO 2 /Al 2 O 3 values lesser than Post-Archean Australian Shale indicate low to moderate maturity for the estuarine and offshore sediments. The geochemical immaturity indicates its derivation from low to moderately weathered source rocks. The major and trace elemental ratios and discriminant function diagrams attribute that the sediments were derived from intermediate to felsic source rocks. The enrichment of Cr and Ni concentration in the sediments compared to the upper continental crust, related to the contribution of orthopyroxenes, weathered from charnockite and garnets from the granulite terrain, respectively. 2018 Journal Article http://hdl.handle.net/20.500.11937/67183 10.1007/s12517-018-3406-9 Springer restricted |
| spellingShingle | Varghese, T. Nageshrao, P. Raghavendramurthy, N. Ramasamy, Nagarajan Sediment geochemistry of coastal environments, southern Kerala, India: implication for provenance |
| title | Sediment geochemistry of coastal environments, southern Kerala, India: implication for provenance |
| title_full | Sediment geochemistry of coastal environments, southern Kerala, India: implication for provenance |
| title_fullStr | Sediment geochemistry of coastal environments, southern Kerala, India: implication for provenance |
| title_full_unstemmed | Sediment geochemistry of coastal environments, southern Kerala, India: implication for provenance |
| title_short | Sediment geochemistry of coastal environments, southern Kerala, India: implication for provenance |
| title_sort | sediment geochemistry of coastal environments, southern kerala, india: implication for provenance |
| url | http://hdl.handle.net/20.500.11937/67183 |