Characterizing Coastal Subenvironments with Modern Foraminiferal Assemblages: Bear Island and Bogue Banks, North Carolina
North Carolina's coastline consists of an extensive barrier island system, with inlets acting as pathways for the exchange of sediment and water from estuarine and open ocean environments. Reconstructing past coastal changes in active systems, like those seen in North Carolina, is commonly achi...
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East Carolina University
2019
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fteastcaroluni:oai:TheScholarship.intra.ecu.edu:10342/7018 2023-05-15T15:40:00+02:00 Characterizing Coastal Subenvironments with Modern Foraminiferal Assemblages: Bear Island and Bogue Banks, North Carolina Shmorhun, Nina Maria-Elena Culver, Stephen J. Mallinson, David J. Geological Sciences 2019-01-08T21:12:52Z application/pdf http://hdl.handle.net/10342/7018 en eng East Carolina University http://hdl.handle.net/10342/7018 Stratigraphy Onslow Bay Bear Island Geophysics Foraminifera--North Carolina--Hammocks Beach State Park Foraminifera--North Carolina--Bogue Banks Sedimentology--North Carolina--Bogue Banks Sedimentology--North Carolina--Hammocks Beach State Park Micropaleontology--North Carolina--Hammocks Beach State Park Micropaleontology--North Carolina--Bogue Banks Master's Thesis text 2019 fteastcaroluni 2022-07-11T11:42:29Z North Carolina's coastline consists of an extensive barrier island system, with inlets acting as pathways for the exchange of sediment and water from estuarine and open ocean environments. Reconstructing past coastal changes in active systems, like those seen in North Carolina, is commonly achieved through the use of a variety of techniques including seismic surveys, sedimentological characterization (e.g., grain-size, lithology, sedimentary structures), and micropaleontological analyses. Foraminifera are common and useful biostratigraphic markers and paleoenvironmental indicators. However, the documentation and utility of foraminifera in coastal systems, can be further developed in nearshore and barrier island related environments (e.g., shoreface, inlet, beach, foreshore). This study aimed to characterize modern foraminiferal assemblages for barrier island-related subenvironments defined a priori, in order to enhance their use as paleoenvironmental indicators in these active coastal environments. Foraminiferal assemblages in Holocene sediments from vibracores were compared with the established modern dataset to test their ability to differentiate subenvironments in the stratigraphic record. Bear Island (Hammocks Beach State Park) was chosen for its lack of human interference and its proximity of previously collected core material from Bogue Inlet and offshore of Bogue Banks, North Carolina. Twenty-six subenvironments from shoreface, inlet, and beach environments were identified and observed on Bear Island and in Bear Inlet. Three replicate surface samples (0-1 cm) were taken via ponar or hand grab sample from each subenvironment, for a total of 78 samples. Sediments were predominantly fine- to medium-grained quartzose and carbonate-rich (e.g., mollusk fragments, echinoid spines) sands. Eighty foraminiferal taxa were identified dominated by Elphidium excavatum, Quinqueloculina lamarckiana, Ammonia parkinsoniana, Eponides repandus, Quinqueloculina seminula, and Ammonia tepida. Discriminant analysis was used to ... Master Thesis Bear Island East Carolina University: The ScholarShip at ECU Bear Island ENVELOPE(-67.250,-67.250,-68.151,-68.151) Barrier Island ENVELOPE(78.396,78.396,-68.431,-68.431) |
institution |
Open Polar |
collection |
East Carolina University: The ScholarShip at ECU |
op_collection_id |
fteastcaroluni |
language |
English |
topic |
Stratigraphy Onslow Bay Bear Island Geophysics Foraminifera--North Carolina--Hammocks Beach State Park Foraminifera--North Carolina--Bogue Banks Sedimentology--North Carolina--Bogue Banks Sedimentology--North Carolina--Hammocks Beach State Park Micropaleontology--North Carolina--Hammocks Beach State Park Micropaleontology--North Carolina--Bogue Banks |
spellingShingle |
Stratigraphy Onslow Bay Bear Island Geophysics Foraminifera--North Carolina--Hammocks Beach State Park Foraminifera--North Carolina--Bogue Banks Sedimentology--North Carolina--Bogue Banks Sedimentology--North Carolina--Hammocks Beach State Park Micropaleontology--North Carolina--Hammocks Beach State Park Micropaleontology--North Carolina--Bogue Banks Shmorhun, Nina Maria-Elena Characterizing Coastal Subenvironments with Modern Foraminiferal Assemblages: Bear Island and Bogue Banks, North Carolina |
topic_facet |
Stratigraphy Onslow Bay Bear Island Geophysics Foraminifera--North Carolina--Hammocks Beach State Park Foraminifera--North Carolina--Bogue Banks Sedimentology--North Carolina--Bogue Banks Sedimentology--North Carolina--Hammocks Beach State Park Micropaleontology--North Carolina--Hammocks Beach State Park Micropaleontology--North Carolina--Bogue Banks |
description |
North Carolina's coastline consists of an extensive barrier island system, with inlets acting as pathways for the exchange of sediment and water from estuarine and open ocean environments. Reconstructing past coastal changes in active systems, like those seen in North Carolina, is commonly achieved through the use of a variety of techniques including seismic surveys, sedimentological characterization (e.g., grain-size, lithology, sedimentary structures), and micropaleontological analyses. Foraminifera are common and useful biostratigraphic markers and paleoenvironmental indicators. However, the documentation and utility of foraminifera in coastal systems, can be further developed in nearshore and barrier island related environments (e.g., shoreface, inlet, beach, foreshore). This study aimed to characterize modern foraminiferal assemblages for barrier island-related subenvironments defined a priori, in order to enhance their use as paleoenvironmental indicators in these active coastal environments. Foraminiferal assemblages in Holocene sediments from vibracores were compared with the established modern dataset to test their ability to differentiate subenvironments in the stratigraphic record. Bear Island (Hammocks Beach State Park) was chosen for its lack of human interference and its proximity of previously collected core material from Bogue Inlet and offshore of Bogue Banks, North Carolina. Twenty-six subenvironments from shoreface, inlet, and beach environments were identified and observed on Bear Island and in Bear Inlet. Three replicate surface samples (0-1 cm) were taken via ponar or hand grab sample from each subenvironment, for a total of 78 samples. Sediments were predominantly fine- to medium-grained quartzose and carbonate-rich (e.g., mollusk fragments, echinoid spines) sands. Eighty foraminiferal taxa were identified dominated by Elphidium excavatum, Quinqueloculina lamarckiana, Ammonia parkinsoniana, Eponides repandus, Quinqueloculina seminula, and Ammonia tepida. Discriminant analysis was used to ... |
author2 |
Culver, Stephen J. Mallinson, David J. Geological Sciences |
format |
Master Thesis |
author |
Shmorhun, Nina Maria-Elena |
author_facet |
Shmorhun, Nina Maria-Elena |
author_sort |
Shmorhun, Nina Maria-Elena |
title |
Characterizing Coastal Subenvironments with Modern Foraminiferal Assemblages: Bear Island and Bogue Banks, North Carolina |
title_short |
Characterizing Coastal Subenvironments with Modern Foraminiferal Assemblages: Bear Island and Bogue Banks, North Carolina |
title_full |
Characterizing Coastal Subenvironments with Modern Foraminiferal Assemblages: Bear Island and Bogue Banks, North Carolina |
title_fullStr |
Characterizing Coastal Subenvironments with Modern Foraminiferal Assemblages: Bear Island and Bogue Banks, North Carolina |
title_full_unstemmed |
Characterizing Coastal Subenvironments with Modern Foraminiferal Assemblages: Bear Island and Bogue Banks, North Carolina |
title_sort |
characterizing coastal subenvironments with modern foraminiferal assemblages: bear island and bogue banks, north carolina |
publisher |
East Carolina University |
publishDate |
2019 |
url |
http://hdl.handle.net/10342/7018 |
long_lat |
ENVELOPE(-67.250,-67.250,-68.151,-68.151) ENVELOPE(78.396,78.396,-68.431,-68.431) |
geographic |
Bear Island Barrier Island |
geographic_facet |
Bear Island Barrier Island |
genre |
Bear Island |
genre_facet |
Bear Island |
op_relation |
http://hdl.handle.net/10342/7018 |
_version_ |
1766372091422048256 |