Persistent shallow magnetic inclination in the past 5 million years with implications for regional tectonics in the Philippines
Despite the growing knowledge on geomagnetic paleosecular variations, the region around the Philippine archipelago remains to be a huge data gap in this regard. This work looked into rock magnetic information from <5 Ma volcanic rocks of Luzon Island to provide data for the statistical characteri...
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ftdoajarticles:oai:doaj.org/article:b41e6d0da842484fba83e2cd0ea6fe57 2023-05-15T16:19:39+02:00 Persistent shallow magnetic inclination in the past 5 million years with implications for regional tectonics in the Philippines Decibel V. Faustino-Eslava Hidetoshi Shibuya Carla B. Dimalanta Graciano P. Yumul, Jr. Jonathan T. Macuroy 2021-06-01T00:00:00Z https://doi.org/10.1016/j.jaesx.2021.100048 https://doaj.org/article/b41e6d0da842484fba83e2cd0ea6fe57 EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S2590056021000050 https://doaj.org/toc/2590-0560 2590-0560 doi:10.1016/j.jaesx.2021.100048 https://doaj.org/article/b41e6d0da842484fba83e2cd0ea6fe57 Journal of Asian Earth Sciences: X, Vol 5, Iss , Pp 100048- (2021) Paleosecular variation of lavas (PSVL) Shallow inclination anomaly Luzon Philippines Geology QE1-996.5 article 2021 ftdoajarticles https://doi.org/10.1016/j.jaesx.2021.100048 2022-12-31T12:17:47Z Despite the growing knowledge on geomagnetic paleosecular variations, the region around the Philippine archipelago remains to be a huge data gap in this regard. This work looked into rock magnetic information from <5 Ma volcanic rocks of Luzon Island to provide data for the statistical characterization of the time-averaged field in the region.A total of 21 sites with ages from 1 ka to 4.3 Ma yielded 13 normal, 7 reversed, and 1 intermediate polarity dataset. These were aggregated with previously published work to form a combined dataset of 59 normal + reversed sites with a mean virtual geomagnetic pole at 321.1°E and 83.7°N with α95 = 3.4, and an angular standard deviation of about 14.6°. This amount of scatter is slightly larger than that predicted by Model G but relatively comparable with other near-equatorial regions such as Java and Ecuador. This work is a first examination of paleomagnetic data from the Philippines in relation to the long-term behavior of the magnetic field in this part of Southeast Asia. The long-ranging shallow inclination observed may also have implications on how paleomagnetic data are interpreted for tectonic studies in the region. Article in Journal/Newspaper Geomagnetic Pole Directory of Open Access Journals: DOAJ Articles Journal of Asian Earth Sciences: X 5 100048 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Paleosecular variation of lavas (PSVL) Shallow inclination anomaly Luzon Philippines Geology QE1-996.5 |
spellingShingle |
Paleosecular variation of lavas (PSVL) Shallow inclination anomaly Luzon Philippines Geology QE1-996.5 Decibel V. Faustino-Eslava Hidetoshi Shibuya Carla B. Dimalanta Graciano P. Yumul, Jr. Jonathan T. Macuroy Persistent shallow magnetic inclination in the past 5 million years with implications for regional tectonics in the Philippines |
topic_facet |
Paleosecular variation of lavas (PSVL) Shallow inclination anomaly Luzon Philippines Geology QE1-996.5 |
description |
Despite the growing knowledge on geomagnetic paleosecular variations, the region around the Philippine archipelago remains to be a huge data gap in this regard. This work looked into rock magnetic information from <5 Ma volcanic rocks of Luzon Island to provide data for the statistical characterization of the time-averaged field in the region.A total of 21 sites with ages from 1 ka to 4.3 Ma yielded 13 normal, 7 reversed, and 1 intermediate polarity dataset. These were aggregated with previously published work to form a combined dataset of 59 normal + reversed sites with a mean virtual geomagnetic pole at 321.1°E and 83.7°N with α95 = 3.4, and an angular standard deviation of about 14.6°. This amount of scatter is slightly larger than that predicted by Model G but relatively comparable with other near-equatorial regions such as Java and Ecuador. This work is a first examination of paleomagnetic data from the Philippines in relation to the long-term behavior of the magnetic field in this part of Southeast Asia. The long-ranging shallow inclination observed may also have implications on how paleomagnetic data are interpreted for tectonic studies in the region. |
format |
Article in Journal/Newspaper |
author |
Decibel V. Faustino-Eslava Hidetoshi Shibuya Carla B. Dimalanta Graciano P. Yumul, Jr. Jonathan T. Macuroy |
author_facet |
Decibel V. Faustino-Eslava Hidetoshi Shibuya Carla B. Dimalanta Graciano P. Yumul, Jr. Jonathan T. Macuroy |
author_sort |
Decibel V. Faustino-Eslava |
title |
Persistent shallow magnetic inclination in the past 5 million years with implications for regional tectonics in the Philippines |
title_short |
Persistent shallow magnetic inclination in the past 5 million years with implications for regional tectonics in the Philippines |
title_full |
Persistent shallow magnetic inclination in the past 5 million years with implications for regional tectonics in the Philippines |
title_fullStr |
Persistent shallow magnetic inclination in the past 5 million years with implications for regional tectonics in the Philippines |
title_full_unstemmed |
Persistent shallow magnetic inclination in the past 5 million years with implications for regional tectonics in the Philippines |
title_sort |
persistent shallow magnetic inclination in the past 5 million years with implications for regional tectonics in the philippines |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://doi.org/10.1016/j.jaesx.2021.100048 https://doaj.org/article/b41e6d0da842484fba83e2cd0ea6fe57 |
genre |
Geomagnetic Pole |
genre_facet |
Geomagnetic Pole |
op_source |
Journal of Asian Earth Sciences: X, Vol 5, Iss , Pp 100048- (2021) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2590056021000050 https://doaj.org/toc/2590-0560 2590-0560 doi:10.1016/j.jaesx.2021.100048 https://doaj.org/article/b41e6d0da842484fba83e2cd0ea6fe57 |
op_doi |
https://doi.org/10.1016/j.jaesx.2021.100048 |
container_title |
Journal of Asian Earth Sciences: X |
container_volume |
5 |
container_start_page |
100048 |
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1766006067660062720 |