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Intraplate volcanism of the Western ...

Stadler, Timothy J.

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Intraplate volcanism of the Western Pacific: New insights from geological and geophysical observations in the Pigafetta Basin.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Intraplate volcanism of the Western Pacific: New insights from geological and geophysical observations in the Pigafetta Basin./
Author:	Stadler, Timothy J.
Description:	51 p.
Notes:	Source: Masters Abstracts International, Volume: 54-04.
Contained By:	Masters Abstracts International54-04(E).
Subject:	Geophysics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1586686
ISBN:	9781321688214

Intraplate volcanism of the Western Pacific: New insights from geological and geophysical observations in the Pigafetta Basin.
Stadler, Timothy J.

Intraplate volcanism of the Western Pacific: New insights from geological and geophysical observations in the Pigafetta Basin. - 51 p.

Source: Masters Abstracts International, Volume: 54-04.

Thesis (M.S.)--Michigan State University, 2015.

Understanding intraplate volcanism is a key to deciphering the Earth's magmatic history. One of the largest intraplate volcanic events occurred during the mid Cretaceous, roughly 75 to 125 Ma in the western Pacific. To investigate the origin and effects of this volcanism on various Earth systems, we present the first comprehensive study of volcanism in the Pigafetta Basin using seismic surveys, magnetic and gravity modeling, and Ocean Drilling Program drill core and well log data from Site 801. Our results show that intraplate volcanism in the Pigafetta Basin coincides with the rest of the western Pacific, supporting the plumelets scenario for the origin of intraplate volcanism during the mid Cretaceous volcanic event. We also discover that the late stage volcanism does not overprint the original ocean crust in the Pigafetta Basin, and hence, marine magnetic anomalies recorded in the Jurassic basement are preserved. Also, the formerly identified Rough Smooth Boundary (RSB) is indistinguishable from any other rough-smooth topographic boundaries throughout the survey area suggesting that the RSB is unlikely to be a Cretaceous sill-Jurassic basement boundary. Lastly, the apparent ages and spatial distribution of volcanic features suggests a dynamic history of hydrothermal circulation in the Pigafetta Basin, indicating that hydrothermal circulation was ongoing well past 100 Ma.

ISBN: 9781321688214Subjects--Topical Terms:

535228
Geophysics.

Intraplate volcanism of the Western Pacific: New insights from geological and geophysical observations in the Pigafetta Basin.
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100 1 $a Stadler, Timothy J. $3 3187670
245 1 0 $a Intraplate volcanism of the Western Pacific: New insights from geological and geophysical observations in the Pigafetta Basin.
300 $a 51 p.
500 $a Source: Masters Abstracts International, Volume: 54-04.
500 $a Adviser: Masako Tominaga.
502 $a Thesis (M.S.)--Michigan State University, 2015.
520 $a Understanding intraplate volcanism is a key to deciphering the Earth's magmatic history. One of the largest intraplate volcanic events occurred during the mid Cretaceous, roughly 75 to 125 Ma in the western Pacific. To investigate the origin and effects of this volcanism on various Earth systems, we present the first comprehensive study of volcanism in the Pigafetta Basin using seismic surveys, magnetic and gravity modeling, and Ocean Drilling Program drill core and well log data from Site 801. Our results show that intraplate volcanism in the Pigafetta Basin coincides with the rest of the western Pacific, supporting the plumelets scenario for the origin of intraplate volcanism during the mid Cretaceous volcanic event. We also discover that the late stage volcanism does not overprint the original ocean crust in the Pigafetta Basin, and hence, marine magnetic anomalies recorded in the Jurassic basement are preserved. Also, the formerly identified Rough Smooth Boundary (RSB) is indistinguishable from any other rough-smooth topographic boundaries throughout the survey area suggesting that the RSB is unlikely to be a Cretaceous sill-Jurassic basement boundary. Lastly, the apparent ages and spatial distribution of volcanic features suggests a dynamic history of hydrothermal circulation in the Pigafetta Basin, indicating that hydrothermal circulation was ongoing well past 100 Ma.
590 $a School code: 0128.
650 4 $a Geophysics. $3 535228
650 4 $a Marine geology. $3 3173821
650 4 $a Geology. $3 516570
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710 2 $a Michigan State University. $b Geological Sciences - Master of Science. $3 3187671
773 0 $t Masters Abstracts International $g 54-04(E).
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792 $a 2015
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1586686