Zobrazeno 1 - 10
of 181
pro vyhledávání: '"Michael O. Garcia"'
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 24, Iss 10, Pp n/a-n/a (2023)
Abstract Kauaʻi shield‐stage lavas are central to understanding the origin of the distinct Kea and Loa Hawaiian geochemical trends in Hawaiian basalts. These trends reflect two geochemically distinct sides in the Hawaiian plume, with Loa to the so
Externí odkaz:
https://doaj.org/article/46b0b1a57128401a814439b29038337c
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 21, Iss 12, Pp n/a-n/a (2020)
Abstract An ongoing challenge in studies of the oceanic upper mantle is how intraplate hotspots impact the thermal structure of the lithosphere. To address this issue at the Hawaiian hotspot, we analyze mineral compositions for a petrographically div
Externí odkaz:
https://doaj.org/article/87df79dafd454b6cb9fb5b453eff1881
Publikováno v:
Frontiers in Earth Science, Vol 8 (2020)
Lithium zoning in zircon and olivine provides a powerful record of crystal histories and magmatic processes in volcanic systems. Characterizing Li behavior in olivine is important because it is one of the few elements in basaltic systems that track s
Externí odkaz:
https://doaj.org/article/3687c7b4ff39458993fcb738028fa582
Autor:
Thor Thordarson, Michael O. Garcia
Publikováno v:
Frontiers in Earth Science, Vol 6 (2018)
The origin of rejuvenated volcanism on mantle plume related oceanic islands remains controversial. One commonly cited model is decompressional melting related to plate flexure from the rapid loading of the lithosphere by the formation of a shield vol
Externí odkaz:
https://doaj.org/article/a8e4221a790241d2b71b45de98f594d1
Publikováno v:
Geochemistry, Geophysics, Geosystems, Vol 14, Iss 10, Pp 4458-4478 (2013)
Rejuvenated volcanism refers to the reemergence of volcanism after a hiatus of 0.5–2 Ma following the voluminous shield building stage of Hawaiian volcanoes. The composition of the rejuvenated source and its distribution relative to the center of t
Externí odkaz:
https://doaj.org/article/f20e8d5945cf41d083946e88b044dd28
Autor:
Hubert Staudigel, Craig L. Moyer, Michael O. Garcia, Alex Malahoff, David A. Clague, Anthony A.P. Koppers
Publikováno v:
Oceanography, Vol 23, Iss 1, Pp 72-73 (2010)
Lō`ihi Seamount defines the volcanically active, leading edge in the Hawaiian hotspot chain. It is located on the submarine flank of Mauna Loa, 30 km south of the island of Hawai`i. Lō`ihi’s summit is at 975-m water depth (Pisces Peak), and the s
Externí odkaz:
https://doaj.org/article/7a11c7c41fda405980309938303f9727
Publikováno v:
Geology.
Temporal variations in lava chemistry at active submarine volcanoes are difficult to decipher due to the challenges of dating their eruptions. Here, we use high-precision measurements of 226Ra-230Th disequilibria in basalts from Kamaʻehuakanaloa (fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10b1bdf79738c23e085409c7a5537387
https://doi.org/10.1130/g51350.1
https://doi.org/10.1130/g51350.1
Publikováno v:
Bulletin of Volcanology. 85
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7c74c52c158e9c391447abebea3bdd8
https://doi.org/10.1007/s00445-023-01649-w
https://doi.org/10.1007/s00445-023-01649-w
Publikováno v:
GSA Bulletin.
Many intraplate oceanic islands undergo “rejuvenated” volcanism following the main edifice-building stage. Honolulu features Hawaiʻi’s most recent rejuvenated volcanism. K-Ar dating of Honolulu volcanism suggests that it started at ca. 750 ka
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2efb09b808d06488f7338bae1ac80f88
https://doi.org/10.1130/b36615.1
https://doi.org/10.1130/b36615.1
Autor:
Yuki Kusano, Takeshi Hanyu, Masako Tominaga, Yohey Suzuki, Benoit Ildefonse, Natsue Abe, Susumu Umino, Steven D'Hondt, Damon A. H. Teagle, Ikuo Katayama, Frieder Klein, Brian Boston, Michael O. Garcia, Laura Crispini, Michelle Harris, Mikiya Yamashita, Gregory F. Moore, Elizabeth Trembath-Reichert, Yasuhiro Yamada, Rosalind M. Coggon, Nan Xiao, Fumio Inagaki, Nobukazu Seama
Publikováno v:
Scientific Drilling
Scientific Drilling, Copernicus Publications, 2021, 29, pp.69-82. ⟨10.5194/sd-29-69-2021⟩
Scientific Drilling, Vol 29, Pp 69-82 (2021)
Scientific Drilling, Copernicus Publications, 2021, 29, pp.69-82. ⟨10.5194/sd-29-69-2021⟩
Scientific Drilling, Vol 29, Pp 69-82 (2021)
For more than half a century, exploring a complete sequence of the oceanic crust from the seafloor through the Mohorovičić discontinuity (Moho) and into the uppermost mantle has been one of the most challenging missions of scientific ocean drilling
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11937978250a0082b2cae76f4e1ceeaa
https://doi.org/10.5194/sd-29-69-2021
https://doi.org/10.5194/sd-29-69-2021