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Radiocarbon dates of sediment cores from inner continental shelf off Taingapatnam, southwest coast of India

Journal Article:

Abstract

Radiocarbon dating of carbonized wood samples from three sediment cores from the inner continental shelf off Taingapatnam, in the southwestern coast of India, indicates ages in the bracket 8400-9400 YBP. These radiometric ages correlate well with the ages of carbonized wood from inner continental shelf off Ponnani, Kerala and Karwar, Karnataka. The occurrence of carbonized wood in widely spread offshore areas probably represents a regional transgressive event in the west coast which resulted in submergence and destruction of coastal mangroves. The rate of sedimentation in the study area varies between 0.12 and 0.37 mm/yr, much lower than those reported from shelf areas north of Mangalore. The slow accumulation of sediments in the southern parts of the western continental shelf of India, as exemplified from the present study, may be due to very poor discharge and low bed load sediments of the west-flowing small rivers of this part of the peninsula and low concentration of suspended particulate matter in them. (author). 24 refs., 2 tabs., 2 figs.
Authors:
Nambiar, A R; [1]  Rajagopalan, G [2] 
  1. Geological Survey of India, Mangalore (India)
  2. Birbal Sahni Inst. of Paleobotany, Lucknow (India)
Publication Date:
Jun 10, 1995
Product Type:
Journal Article
Reference Number:
SCA: 400101; 580000; PA: AIX-26:062370; EDB-95:124807; SN: 95001457551
Resource Relation:
Journal Name: Current Science; Journal Volume: 68; Journal Issue: 11; Other Information: PBD: 10 Jun 1995
Subject:
40 CHEMISTRY; 58 GEOSCIENCES; SEDIMENTS; ISOTOPE DATING; CARBON 14; COASTAL REGIONS; INDIA; LEAD 210; RIVERS; SEDIMENTATION; WOOD
OSTI ID:
100065
Country of Origin:
India
Language:
English
Other Identifying Numbers:
Journal ID: CUSCAM; ISSN 0011-3891; TRN: IN9501065062370
Submitting Site:
INIS
Size:
pp. 1133-1137
Announcement Date:
Oct 02, 1995

Journal Article:

Citation Formats

Nambiar, A R, and Rajagopalan, G. Radiocarbon dates of sediment cores from inner continental shelf off Taingapatnam, southwest coast of India. India: N. p., 1995. Web.
Nambiar, A R, & Rajagopalan, G. Radiocarbon dates of sediment cores from inner continental shelf off Taingapatnam, southwest coast of India. India.
Nambiar, A R, and Rajagopalan, G. 1995. "Radiocarbon dates of sediment cores from inner continental shelf off Taingapatnam, southwest coast of India." India.
@misc{etde_100065,
title = {Radiocarbon dates of sediment cores from inner continental shelf off Taingapatnam, southwest coast of India}
author = {Nambiar, A R, and Rajagopalan, G}
abstractNote = {Radiocarbon dating of carbonized wood samples from three sediment cores from the inner continental shelf off Taingapatnam, in the southwestern coast of India, indicates ages in the bracket 8400-9400 YBP. These radiometric ages correlate well with the ages of carbonized wood from inner continental shelf off Ponnani, Kerala and Karwar, Karnataka. The occurrence of carbonized wood in widely spread offshore areas probably represents a regional transgressive event in the west coast which resulted in submergence and destruction of coastal mangroves. The rate of sedimentation in the study area varies between 0.12 and 0.37 mm/yr, much lower than those reported from shelf areas north of Mangalore. The slow accumulation of sediments in the southern parts of the western continental shelf of India, as exemplified from the present study, may be due to very poor discharge and low bed load sediments of the west-flowing small rivers of this part of the peninsula and low concentration of suspended particulate matter in them. (author). 24 refs., 2 tabs., 2 figs.}
journal = {Current Science}
issue = {11}
volume = {68}
journal type = {AC}
place = {India}
year = {1995}
month = {Jun}
}