Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Graciano P. Yumul, Jr."'
Autor:
Betchaida D. Payot, Satoko Ishimaru, Akihiro Tamura, Carla B. Dimalanta, Graciano P. Yumul, Jr., Shoji Arai
Publikováno v:
Journal of Asian Earth Sciences: X, Vol 5, Iss , Pp 100051- (2021)
The bulk of Sibuyan island in the Romblon Island Group, Philippines is underlain by remarkably fresh spinel lherzolites, harzburgites and dunites collectively called as the Sibuyan Ultramafics. Based on petrographic and geochemical characteristics, t
Externí odkaz:
https://doaj.org/article/89da5157d42b42ddbcf846b1c1b943ed
Autor:
Decibel V. Faustino-Eslava, Hidetoshi Shibuya, Carla B. Dimalanta, Graciano P. Yumul, Jr., Jonathan T. Macuroy
Publikováno v:
Journal of Asian Earth Sciences: X, Vol 5, Iss , Pp 100048- (2021)
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
Externí odkaz:
https://doaj.org/article/b41e6d0da842484fba83e2cd0ea6fe57
Publikováno v:
Journal of Asian Earth Sciences: X, Vol 4, Iss , Pp 100032- (2020)
A revised crustal thickness map for the Philippine island arc, PHILCRUST3.0, has been generated using new gravity data from the EGM2008. The gravity-derived crustal thickness is compared with crustal thickness estimates obtained using the Sr/Y ratios
Externí odkaz:
https://doaj.org/article/f06a9775829a4eb59fc6eea844facafc
Autor:
Graciano P. Yumul, Jr., Carla B. Dimalanta, Jillian Aira S. Gabo-Ratio, Karlo L. Queaño, Leo T. Armada, Jenielyn T. Padrones, Decibel V. Faustino-Eslava, Betchaida D. Payot, Edanjarlo J. Marquez
Publikováno v:
Journal of Asian Earth Sciences: X, Vol 4, Iss , Pp 100031- (2020)
An ancient oceanic crustal leading edge east of mainland Asia, the proto-South China Sea crust, must have existed during the Mesozoic based on tectonic reconstructions that accounted for the presence of subducted slabs in the lower mantle and the exp
Externí odkaz:
https://doaj.org/article/5e5bed90efda4fc593c210e49e1b4a00
Autor:
Graciano P. Yumul, Jr., Leo T. Armada, Jillian Aira S. Gabo-Ratio, Carla B. Dimalanta, Rurik S.P. Austria
Publikováno v:
Journal of Asian Earth Sciences: X, Vol 4, Iss , Pp 100030- (2020)
The eastern portion of the Philippine island arc system, from the Bicol Peninsula through Leyte island to the Pacific Cordillera of east Mindanao, is the overriding plate underneath which the West Philippine Basin (part of the Philippine Sea Plate) a
Externí odkaz:
https://doaj.org/article/ea14d6a2722741efa3159e54a6cff183
Autor:
Jillian Aira Gabo-Ratio, Alfred Elmer Buena, Barbie Ross B. Villaplaza, Betchaida D. Payot, Carla B. Dimalanta, Karlo L. Queaño, Eric S. Andal, Graciano P. Yumul, Jr.
Publikováno v:
Journal of Asian Earth Sciences: X, Vol 4, Iss , Pp 100041- (2020)
The Masara Gold District in southeastern Mindanao island is an area of prolific hydrothermal copper and gold mineralization. This study documents the mineralization characteristics of the NW-trending Bonanza-Sandy epithermal veins to constrain possib
Externí odkaz:
https://doaj.org/article/78b14d77394846cd80005e7af4126f39
Autor:
Alfred Elmer Buena, Barbie Ross B. Villaplaza, Betchaida D. Payot, Jillian Aira S. Gabo-Ratio, Noelynna T. Ramos, Decibel V. Faustino-Eslava, Karlo L. Queaño, Carla B. Dimalanta, Jenielyn T. Padrones, Kenichiro Tani, Walter W. Brown, Graciano P. Yumul, Jr.
Publikováno v:
Journal of Asian Earth Sciences: X, Vol 1, Iss , Pp - (2019)
The Masara Gold District in Eastern Mindanao, Philippines, is one of the most prolific gold provinces in the Philippines. Recent district-scale mineral exploration makes it possible to undertake geologic and geochemical studies and thus to yield bett
Externí odkaz:
https://doaj.org/article/a28dd5ec69224b26898a775018201403
Autor:
Karlo L. Queaño, Graciano P. Yumul Jr., Edanjarlo J. Marquez, Jillian A. Gabo-Ratio, Betchaida D. Payot, Carla B. Dimalanta
Publikováno v:
Journal of Asian Earth Sciences: X, Vol 4, Iss , Pp 100033- (2020)
Tectonic reconstruction models of Southeast Asia all invoke in the early Cenozoic the collision of Mesozoic oceanic plates, which have been fragmented, consumed along subduction zones or emplaced onto the overriding plate. However, with marked variat
Externí odkaz:
https://doaj.org/article/f51220a07d6342299821d7cabe13ff21
Autor:
Leo T. Armada, Shu-Kun Hsu, Carla B. Dimalanta, Graciano P. Yumul Jr., Wen-Bin Doo, Yi-Ching Yeh
Publikováno v:
Journal of Asian Earth Sciences: X, Vol 4, Iss , Pp 100036- (2020)
The Manila Trench subduction zone is characterized by varying tectonic structures from north to south. Analyses of new seismic reflection data and bathymetric data indicate distinct morphological and deformational patterns in the forearc region. Diff
Externí odkaz:
https://doaj.org/article/a2c97febd3984f6ea3a1ab7c803c7127
Autor:
Pearlyn C. Manalo, Carla B. Dimalanta, Decibel V. Faustino-Eslava, Betchaida D. Payot, Noelynna T. Ramos, Karlo L. Queaño, Americus D. C. Perez, and Graciano P. Yumul Jr.
Publikováno v:
Terrestrial, Atmospheric and Oceanic Sciences, Vol 26, Iss 6, p 687 (2015)
This paper presents the first field, geochemical and geophysical information on the recently recognized Early Cretaceous Balud Ophiolitic Complex (BOC) in the island of Masbate in the Central Philippines. Mapping of the western limb of the island rev
Externí odkaz:
https://doaj.org/article/9eaa4fd6522443f0bd9f39743a6d279d