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Deep-water antipatharians; proxies of environmental change

B. Williams, M. J. Risk, S. W. Ross and K. J. Sulak
Deep-water antipatharians; proxies of environmental change
Geology (Boulder) (September 2006) 34 (9): 773-776

Abstract

Deep-water (307-697 m) antipatharian (black coral) specimens were collected from the southeastern continental slope of the United States and the north-central Gulf of Mexico. The sclerochronology of the specimens indicates that skeletal growth takes place by formation of concentric coeval layers. We used (super 210) Pb to estimate radial growth rate of two specimens, and to establish that they were several centuries old. Bands were delaminated in KOH and analyzed for carbon and nitrogen stable isotopes. Carbon values ranged from -16.4 ppm to -15.7 ppm; the oldest specimen displayed the largest range in values. Nitrogen values ranged from 7.7 ppm to 8.6 ppm. Two specimens from the same location and depth had similar (super 15) N signatures, indicating good reproducibility between specimens.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 34
Serial Issue: 9
Title: Deep-water antipatharians; proxies of environmental change
Affiliation: Universite du Quebec a Montreal-McGill, Centre de Recherche en Geochimie et en Geodynamique, Montreal, QC, Canada
Pages: 773-776
Published: 200609
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 24
Accession Number: 2006-071529
Categories: Quaternary geologyGeochronology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 tables, sketch map
N30°30'00" - N30°30'00", W79°39'00" - W79°39'00"
N31°49'60" - N31°51'00", W77°37'00" - W77°35'60"
N29°06'00" - N29°07'00", W88°22'60" - W88°22'60"
Secondary Affiliation: McMaster University, CAN, CanadaUniversity of North Carolina at Wilmington, USA, United StatesU. S. Geological Survey, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 200641
Program Name: USGSOPNon-USGS publications with USGS authors
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