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003 OCoLC;

005 20251021154320.0;

008 061107s2004 xx ab bm 000 0 eng d;

035 a| (Sirsi) o75272331;

035 a| (OCoLC)75272331;

043 a| n-us-nc;

049 a| EREE;

050 4 a| QL368.F6b| V26 2004;

100 1 a| Vance, David J.,e| author.?| UNAUTHORIZED;

245 10 a| Modern and historic trends in foraminiferal distributions and sedimentary processes in the Albermarle Estuarine system, North Carolina /c| by David J. Vance.;

264 0 c| 2004.;

300 a| xvi, 249 pages :b| illustrations, maps (some color) ;c| 28 cm;

336 a| textb| txt2| rdacontent;

337 a| unmediatedb| n2| rdamedia;

338 a| volumeb| nc2| rdacarrier;

502 b| M.S.c| East Carolina Universityd| 2004;

500 a| Presented to the faculty of the Department of Geology.;

500 a| Advisor: Stephen J. Culver;

500 a| Advisor: D. Reide Corbett;

504 a| Includes bibliographical references (leaves 144-159).;

520 3 a| Fifty-three stations were utilized to characterize the estuarine environment of the Albemarle estuarine system (AES) using surface and down-core trends in foraminifera and radionuclide tracers (²¹⁰Pb, ¹³⁷Cs, and ²²⁶Ra). Thirty-seven species were recognized in the dead assemblages from 49 stations, 19 species comprised the living populations. Cluster analysis of the surface samples indicated that the living populations were characterized by four biofacies: the mixed marsh and estuarine, nearshore marine, estuarine, and estuarine shoal. The dead assemblages were characterized by five biofacies: the nearshore marine and inlet, estuarine shoal, estuarine, inner estuarine, and marsh. Radionuclide tracers were analyzed for 27 cores and produced an average sedimentation rate of 0.13 cm yr⁻¹ for the cores not in protected reaches of the AES. Radionuclide tracer profiles indicative of resuspended sediments and below predicted excess ²¹⁰Pb inventories suggested that most core stations, except those in the protected reaches of the estuary, signified a potential loss of sediment from the AES probably to the deeper Pamlico Basin to the south. Therefore, based on the average sedimentation rate for the AES and the regional rate of sea-level rise (0.32 to 0.46 cm yr⁻¹), the accumulation rates in the AES appear to be influenced by short-term storm events and long-term sea level rise and basin subsidence. Accumulation rates exceed sea level rise where accommodation space allows or storm events and physical processes are less frequent and so resuspension and mobilization is less prevalent. Paleoenvironmental reconstruction of three cores from the central Albemarle basin, based on the distribution of dead surface foraminiferal assemblages, indicated that biofacies were recognizable in the cores, the inner estuarine biofacies and the estuarine biofacies. Analysis of radionuclide tracers enabled calculation of accumulation rates for the cores. Accumulation rates provided the framework to establish a geochronology for each core in order to make paleoenvironmental interpretations. Paleoenvironmental reconstruction of the westernmost core (ALB01S1C2) indicated this station was possibly influenced by ephemeral deposition of a fresher upstream biofacies overtop of a low-brackish estuarine biofacies or by increased freshwater discharge since the early 1990's due to increased storm activity. The two cores in the central (ALBOl S3C2) and western (ALBOl S4C2) portion of Albemarle Sound showed that, prior to the early 19th century, Albemarle Sound had supported calcareous foraminiferal species. These taxa were adapted to the higher salinities that resulted from several inlets that were open adjacent to the AES prior to 1828. On the basis of this study, foraminiferal distributions and radionuclide tracers are useful for characterizing modem estuarine environments and form the framework for interpreting paleoenvironmental changes in coastal sediments and in late Quaternary deposits of coastal North Carolina and adjacent regions.;

650 0 a| Sedimentation and depositionz| North Carolinaz| Albemarle Sound.=| ^A17524;

650 0 a| Estuariesz| North Carolinaz| Albemarle Sound.=| ^A69707;

650 7 a| Estuaries.2| fast0| (OCoLC)fst00915654;

650 7 a| Foraminiferax| Geographical distribution.2| fast0| (OCoLC)fst00931563;

650 7 a| Sedimentation and deposition.2| fast0| (OCoLC)fst01110984;

655 7 a| Academic theses.2| fast0| (OCoLC)fst01726453;

655 7 a| Academic theses.2| lcgft;

655 7 a| Thèses et écrits académiques.2| rvmgf0| (CaQQLa)RVMGF-000001173;

655 2 a| Academic Dissertation.0| (DNLM)D019478?| UNAUTHORIZED;

700 1 a| Culver, Stephen J.,e| degree supervisor.1| https://id.oclc.org/worldcat/entity/E39PCjKrBJYmh8dmXyFxykwpyd=| ^A153086;

700 1 a| Corbett, D. Reideq| (David Reide),d| 1971-e| degree supervisor.1| https://id.oclc.org/worldcat/entity/E39PCjxDFwRMjMyr3CmH6Gr47b=| ^A1373510;

710 2 a| East Carolina University.b| Department of Geology.?| UNAUTHORIZED;

856 41 z| Access via ScholarShipu| http://hdl.handle.net/10342/11547;

949 a| Click on web addressw| asish| joyner101;

949 a| Click on web addressw| asish| hsl111;

994 a| C0b| ERE;

596 a| 1 4;

998 a| 1060945;

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999 a| CLICK ON WEB ADDRESSw| ASISc| 1i| 1060945-3001l| JNETm| JOYNERr| Ys| Yt| JNE3ETDu| 7/25/2025x| ETDz| JERESOURCE;

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Modern and historic trends in foraminiferal distributions and sedimentary processes in the Albermarle Estuarine system, North Carolina / by David J. Vance.

Author/creator	Vance, David J. author.
Other author	Culver, Stephen J., degree supervisor.
Other author	Corbett, D. Reide (David Reide), 1971- degree supervisor.
Other author	East Carolina University. Department of Geology.
Format	Theses and dissertations
Production	2004.
Description	xvi, 249 pages : illustrations, maps (some color) ; 28 cm
Supplemental Content	Access via ScholarShip
Subjects	Foraminifera--North Carolina. --Albemarle Sound. --Geographical distribution. Sedimentation and deposition--North Carolina. --Albemarle Sound. Estuaries--North Carolina. --Albemarle Sound.

Summary	Fifty-three stations were utilized to characterize the estuarine environment of the Albemarle estuarine system (AES) using surface and down-core trends in foraminifera and radionuclide tracers (²¹⁰Pb, ¹³⁷Cs, and ²²⁶Ra). Thirty-seven species were recognized in the dead assemblages from 49 stations, 19 species comprised the living populations. Cluster analysis of the surface samples indicated that the living populations were characterized by four biofacies: the mixed marsh and estuarine, nearshore marine, estuarine, and estuarine shoal. The dead assemblages were characterized by five biofacies: the nearshore marine and inlet, estuarine shoal, estuarine, inner estuarine, and marsh. Radionuclide tracers were analyzed for 27 cores and produced an average sedimentation rate of 0.13 cm yr⁻¹ for the cores not in protected reaches of the AES. Radionuclide tracer profiles indicative of resuspended sediments and below predicted excess ²¹⁰Pb inventories suggested that most core stations, except those in the protected reaches of the estuary, signified a potential loss of sediment from the AES probably to the deeper Pamlico Basin to the south. Therefore, based on the average sedimentation rate for the AES and the regional rate of sea-level rise (0.32 to 0.46 cm yr⁻¹), the accumulation rates in the AES appear to be influenced by short-term storm events and long-term sea level rise and basin subsidence. Accumulation rates exceed sea level rise where accommodation space allows or storm events and physical processes are less frequent and so resuspension and mobilization is less prevalent. Paleoenvironmental reconstruction of three cores from the central Albemarle basin, based on the distribution of dead surface foraminiferal assemblages, indicated that biofacies were recognizable in the cores, the inner estuarine biofacies and the estuarine biofacies. Analysis of radionuclide tracers enabled calculation of accumulation rates for the cores. Accumulation rates provided the framework to establish a geochronology for each core in order to make paleoenvironmental interpretations. Paleoenvironmental reconstruction of the westernmost core (ALB01S1C2) indicated this station was possibly influenced by ephemeral deposition of a fresher upstream biofacies overtop of a low-brackish estuarine biofacies or by increased freshwater discharge since the early 1990's due to increased storm activity. The two cores in the central (ALBOl S3C2) and western (ALBOl S4C2) portion of Albemarle Sound showed that, prior to the early 19th century, Albemarle Sound had supported calcareous foraminiferal species. These taxa were adapted to the higher salinities that resulted from several inlets that were open adjacent to the AES prior to 1828. On the basis of this study, foraminiferal distributions and radionuclide tracers are useful for characterizing modem estuarine environments and form the framework for interpreting paleoenvironmental changes in coastal sediments and in late Quaternary deposits of coastal North Carolina and adjacent regions.
General note	Presented to the faculty of the Department of Geology.
General note	Advisor: Stephen J. Culver
General note	Advisor: D. Reide Corbett
Dissertation note	M.S. East Carolina University 2004
Bibliography note	Includes bibliographical references (leaves 144-159).
Genre/form	Academic theses.
Genre/form	Academic theses.
Genre/form	Thèses et écrits académiques.

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Modern and historic trends in foraminiferal distributions and sedimentary processes in the Albermarle Estuarine system, North Carolina / by David J. Vance.

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