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Paleolimnological Analysis of Sediment Cores from Guana Island Pond, Guana Island, the British Virgin Islands.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Paleolimnological Analysis of Sediment Cores from Guana Island Pond, Guana Island, the British Virgin Islands./
作者:	Goyette, Theresa Lynne.
面頁冊數:	1 online resource (136 pages)
附註:	Source: Masters Abstracts International, Volume: 56-04.
Contained By:	Masters Abstracts International56-04(E).
標題:	Environmental geology. -
電子資源:	click for full text (PQDT)
ISBN:	9781369774528

Paleolimnological Analysis of Sediment Cores from Guana Island Pond, Guana Island, the British Virgin Islands.
Goyette, Theresa Lynne.

Paleolimnological Analysis of Sediment Cores from Guana Island Pond, Guana Island, the British Virgin Islands. - 1 online resource (136 pages)

Source: Masters Abstracts International, Volume: 56-04.

Thesis (M.S.)--University of Missouri - Kansas City, 2017.

Includes bibliographical references

Shallow sediment cores extracted from three locations in Guana Island Pond were analyzed using multiple paleolimnological techniques, including sediment description, grain-size analyses, X-Ray Fluorescence, elemental analyses, scanning electron microscopy, and fossil identification. These data were used to define six depositional units (1--6) that mark the change in paleoenvironment of the lake. Two radiocarbon dates on organic material from 27 cm and 65 cm depth in the cores yielded calibrated ages of 720 +/- 40 yr BP and 1307 +/- 46 yr BP, respectively. Approximately 2200 yr BP, Guana Island Pond was likely a tidal estuary with sandy storm deposits. By 1500--900 yr BP, an abundance of Chara fibrosa oogonia (a freshwater algae) suggest the pond closed off from the sea and runoff exceeded evaporation in a regional wetter climate phase. At this time, the lake was possibly a viable source of potable fresh water for pre-Columbian native peoples and early European settlers. After about 900--700 yr BP, the lake alternated between marine to brackish to freshwater conditions. The uppermost layer of the lake sediment contains high levels of Fe, Ti, and Si indicating an increase in watershed erosion and soil runoff, likely from development of the island from the Quaker settlement period (18th century) through the 20th century.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781369774528Subjects--Topical Terms:

904653
Environmental geology.
Index Terms--Genre/Form:

554714
Electronic books.

Paleolimnological Analysis of Sediment Cores from Guana Island Pond, Guana Island, the British Virgin Islands.
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500 $a Source: Masters Abstracts International, Volume: 56-04.
500 $a Adviser: Tina M. Niemi.
502 $a Thesis (M.S.)--University of Missouri - Kansas City, 2017.
504 $a Includes bibliographical references
520 $a Shallow sediment cores extracted from three locations in Guana Island Pond were analyzed using multiple paleolimnological techniques, including sediment description, grain-size analyses, X-Ray Fluorescence, elemental analyses, scanning electron microscopy, and fossil identification. These data were used to define six depositional units (1--6) that mark the change in paleoenvironment of the lake. Two radiocarbon dates on organic material from 27 cm and 65 cm depth in the cores yielded calibrated ages of 720 +/- 40 yr BP and 1307 +/- 46 yr BP, respectively. Approximately 2200 yr BP, Guana Island Pond was likely a tidal estuary with sandy storm deposits. By 1500--900 yr BP, an abundance of Chara fibrosa oogonia (a freshwater algae) suggest the pond closed off from the sea and runoff exceeded evaporation in a regional wetter climate phase. At this time, the lake was possibly a viable source of potable fresh water for pre-Columbian native peoples and early European settlers. After about 900--700 yr BP, the lake alternated between marine to brackish to freshwater conditions. The uppermost layer of the lake sediment contains high levels of Fe, Ti, and Si indicating an increase in watershed erosion and soil runoff, likely from development of the island from the Quaker settlement period (18th century) through the 20th century.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Environmental geology. $3 904653
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