NDLI: Preferential settling of smectite on the Amazon continental shelf

Content Provider	Springer Nature Link
Author	Patchineelam, S. M. de Figueiredo, A. G.
Copyright Year	2000
Abstract	Seventy-five surface and subsurface sediment samples collected on the Amazon continental shelf were analyzed by X-ray diffraction (XRD) in the grain-size fractions smaller than 2 μm. The groups of clay minerals thus identified were smectite, kaolinite, illite, and mixed-layer illite/smectite. Calculation of relative abundance shows a predominance of smectite (37%) in the whole area, followed by kaolinite (27%), illite (23%), and a small percentage of mixed-layer illite/smectite (12%). The distal, northwest region of the continental shelf is characterized by a high abundance of smectite (41%), high salinity values, and high sediment accumulation rates (10 cm year−1), whereas the proximal region is characterized by a comparatively low abundance of smectite (30%), low salinity values, and low sediment accumulation rates (<1 cm year−1). This trend of increasing abundance northwestwards documents a preferential settling of smectite in the distal and more saline regions of this estuarine system.
Starting Page	37
Ending Page	42
Page Count	6
File Format	PDF
ISSN	02760460
Journal	Geo-Marine Letters
Volume Number	20
Issue Number	1
e-ISSN	14321157
Language	English
Publisher	Springer-Verlag
Publisher Date	2000-07-05
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Environmental Science Geotechnical Engineering and Engineering Geology Oceanography

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Sandbank occurrence on the Dutch continental shelf in the North Sea

Pathways of clay mineral transport in the coastal zone of the Brazilian continental shelf from Ceará to the mouth of the Amazon River

Sediment dynamics on the narrow, canyon-incised and current-swept shelf of the northern KwaZulu-Natal continental shelf, South Africa

Modeling suspended sediment distribution in continental shelf upwelling/downwelling settings

Sediment accumulation rates along the inner eastern Brazilian continental shelf

Large and very large subaqueous dunes on the continental shelf off southern Vietnam, South China Sea

A critique of “Modeling suspended sediment distribution in continental shelf upwelling/downwelling settings”: reply

Discussion: a critique of “Modeling suspended sediment distribution in continental shelf upwelling/downwelling settings”

Geophysical and geochemical observations on actively seeping hydrocarbon gases on the south-eastern Yellow Sea continental shelf

Preferential settling of smectite on the Amazon continental shelf

Similar Documents

Sandbank occurrence on the Dutch continental shelf in the North Sea

Pathways of clay mineral transport in the coastal zone of the Brazilian continental shelf from Ceará to the mouth of the Amazon River

Sediment dynamics on the narrow, canyon-incised and current-swept shelf of the northern KwaZulu-Natal continental shelf, South Africa

Modeling suspended sediment distribution in continental shelf upwelling/downwelling settings

Sediment accumulation rates along the inner eastern Brazilian continental shelf

Large and very large subaqueous dunes on the continental shelf off southern Vietnam, South China Sea

A critique of “Modeling suspended sediment distribution in continental shelf upwelling/downwelling settings”: reply

Discussion: a critique of “Modeling suspended sediment distribution in continental shelf upwelling/downwelling settings”

Geophysical and geochemical observations on actively seeping hydrocarbon gases on the south-eastern Yellow Sea continental shelf

Preferential settling of smectite on the Amazon continental shelf