語系:
繁體中文
English
說明(常見問題)
登入
回首頁
切換:
標籤
|
MARC模式
|
ISBD
Environmental Controls on the Geoche...
~
University of South Florida.
Environmental Controls on the Geochemistry of Globorotalia truncatulinoides in the Gulf of Mexico : = Implications for Paleoceanographic Reconstructions.
紀錄類型:
書目-語言資料,手稿 : Monograph/item
正題名/作者:
Environmental Controls on the Geochemistry of Globorotalia truncatulinoides in the Gulf of Mexico :/
其他題名:
Implications for Paleoceanographic Reconstructions.
作者:
Reynolds, Caitlin Elizabeth.
面頁冊數:
1 online resource (48 pages)
附註:
Source: Masters Abstracts International, Volume: 58-01.
Contained By:
Masters Abstracts International58-01(E).
標題:
Marine geology. -
電子資源:
click for full text (PQDT)
ISBN:
9780438280007
Environmental Controls on the Geochemistry of Globorotalia truncatulinoides in the Gulf of Mexico : = Implications for Paleoceanographic Reconstructions.
Reynolds, Caitlin Elizabeth.
Environmental Controls on the Geochemistry of Globorotalia truncatulinoides in the Gulf of Mexico :
Implications for Paleoceanographic Reconstructions. - 1 online resource (48 pages)
Source: Masters Abstracts International, Volume: 58-01.
Thesis (M.S.)--University of South Florida, 2018.
Includes bibliographical references
Modern observations of planktic foraminifera from sediment trap studies help to constrain the regional ecology of paleoceanographically valuable species. Results from a weekly-resolved sediment trap time series (2008--2014) in the northern Gulf of Mexico demonstrate that 92% of Globorotalia truncatulinoides flux occurs in winter (January, February, and March), and that encrusted and non-encrusted individuals represent calcification in distinct depth habitats. We use individual foraminiferal analysis (IFA) of G. truncatulinoides tests to investigate differences in the elemental (Mg/Ca) and isotopic composition (delta18O and delta 13C) of the encrusted and non-encrusted ontogenetic forms of G. truncatulinoides, and to estimate their calcification depth in the northern Gulf of Mexico. We estimate that non-encrusted and encrusted G. truncatulinoides have mean calcification depths of 66 +/- 9 meters and 379 +/- 76 meters, respectively. We validate the Mg/Ca-calcification temperature relationship for G. truncatulinoides and demonstrate that the delta18O and Mg/Ca of the non-encrusted form is a suitable proxy for winter surface mixed layer conditions in the Gulf of Mexico. Care should be taken not to combine encrusted and non-encrusted individuals of G. truncatulinoides for down core paleoceanographic studies.
Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018
Mode of access: World Wide Web
ISBN: 9780438280007Subjects--Topical Terms:
1178828
Marine geology.
Index Terms--Genre/Form:
554714
Electronic books.
Environmental Controls on the Geochemistry of Globorotalia truncatulinoides in the Gulf of Mexico : = Implications for Paleoceanographic Reconstructions.
LDR
:02589ntm a2200325Ki 4500
001
917616
005
20181022104652.5
006
m o u
007
cr mn||||a|a||
008
190606s2018 xx obm 000 0 eng d
020
$a
9780438280007
035
$a
(MiAaPQ)AAI10838149
035
$a
(MiAaPQ)usf:14874
035
$a
AAI10838149
040
$a
MiAaPQ
$b
eng
$c
MiAaPQ
$d
NTU
100
1
$a
Reynolds, Caitlin Elizabeth.
$3
1191727
245
1 0
$a
Environmental Controls on the Geochemistry of Globorotalia truncatulinoides in the Gulf of Mexico :
$b
Implications for Paleoceanographic Reconstructions.
264
0
$c
2018
300
$a
1 online resource (48 pages)
336
$a
text
$b
txt
$2
rdacontent
337
$a
computer
$b
c
$2
rdamedia
338
$a
online resource
$b
cr
$2
rdacarrier
500
$a
Source: Masters Abstracts International, Volume: 58-01.
500
$a
Adviser: Brad E. Rosenheim.
502
$a
Thesis (M.S.)--University of South Florida, 2018.
504
$a
Includes bibliographical references
520
$a
Modern observations of planktic foraminifera from sediment trap studies help to constrain the regional ecology of paleoceanographically valuable species. Results from a weekly-resolved sediment trap time series (2008--2014) in the northern Gulf of Mexico demonstrate that 92% of Globorotalia truncatulinoides flux occurs in winter (January, February, and March), and that encrusted and non-encrusted individuals represent calcification in distinct depth habitats. We use individual foraminiferal analysis (IFA) of G. truncatulinoides tests to investigate differences in the elemental (Mg/Ca) and isotopic composition (delta18O and delta 13C) of the encrusted and non-encrusted ontogenetic forms of G. truncatulinoides, and to estimate their calcification depth in the northern Gulf of Mexico. We estimate that non-encrusted and encrusted G. truncatulinoides have mean calcification depths of 66 +/- 9 meters and 379 +/- 76 meters, respectively. We validate the Mg/Ca-calcification temperature relationship for G. truncatulinoides and demonstrate that the delta18O and Mg/Ca of the non-encrusted form is a suitable proxy for winter surface mixed layer conditions in the Gulf of Mexico. Care should be taken not to combine encrusted and non-encrusted individuals of G. truncatulinoides for down core paleoceanographic studies.
533
$a
Electronic reproduction.
$b
Ann Arbor, Mich. :
$c
ProQuest,
$d
2018
538
$a
Mode of access: World Wide Web
650
4
$a
Marine geology.
$3
1178828
655
7
$a
Electronic books.
$2
local
$3
554714
690
$a
0556
710
2
$a
ProQuest Information and Learning Co.
$3
1178819
710
2
$a
University of South Florida.
$b
Marine Science.
$3
1186052
773
0
$t
Masters Abstracts International
$g
58-01(E).
856
4 0
$u
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10838149
$z
click for full text (PQDT)
筆 0 讀者評論
多媒體
評論
新增評論
分享你的心得
Export
取書館別
處理中
...
變更密碼[密碼必須為2種組合(英文和數字)及長度為10碼以上]
登入