The Evolution of the Galapagos Mantle Plume: From Large Igneous Province to Ocean Island Basalt
Mantle plumes are anomalously hot, narrow upwellings of mantle material that originate at the core-mantle boundary. As plumes rise they may form volumetrically large "heads" (~1000 km in diameter) with narrower (~100 km) "tails." Plume head melting is thought to form Large Igneou...
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ndltd-VTETD-oai-vtechworks.lib.vt.edu-10919-774382021-11-10T05:45:41Z The Evolution of the Galapagos Mantle Plume: From Large Igneous Province to Ocean Island Basalt Trela, Jarek Geosciences Gazel, Esteban Caddick, Mark J. Herzberg, Claude T. Zhou, Ying Geology Geochemistry mantle plumes olivine thermometry petrology hotspots isotopes Mantle plumes are anomalously hot, narrow upwellings of mantle material that originate at the core-mantle boundary. As plumes rise they may form volumetrically large "heads" (~1000 km in diameter) with narrower (~100 km) "tails." Plume head melting is thought to form Large Igneous Provinces (LIPs), vast outpourings of basaltic lava (~106 km3), while plume tail melting forms linear chains of ocean island basalts (OIBs) similar the Emperor-Hawaii Seamount chain. Mantle plume derived melts indicate that these structures sample deep Earth geochemical and lithological heterogeneities. Studying plume-derived lavas can clarify important planetary-scale questions relating to the accretion of the Earth, primordial geochemical reservoirs, the fate of subducted materials, planetary differentiation, and convective mixing. Ph. D. 2017-04-22T08:00:48Z 2017-04-22T08:00:48Z 2017-04-21 Dissertation vt_gsexam:10029 http://hdl.handle.net/10919/77438 In Copyright http://rightsstatements.org/vocab/InC/1.0/ ETD application/pdf Virginia Tech |
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Geology Geochemistry mantle plumes olivine thermometry petrology hotspots isotopes |
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Geology Geochemistry mantle plumes olivine thermometry petrology hotspots isotopes Trela, Jarek The Evolution of the Galapagos Mantle Plume: From Large Igneous Province to Ocean Island Basalt |
description |
Mantle plumes are anomalously hot, narrow upwellings of mantle material that originate at the core-mantle boundary. As plumes rise they may form volumetrically large "heads" (~1000 km in diameter) with narrower (~100 km) "tails." Plume head melting is thought to form Large Igneous Provinces (LIPs), vast outpourings of basaltic lava (~106 km3), while plume tail melting forms linear chains of ocean island basalts (OIBs) similar the Emperor-Hawaii Seamount chain. Mantle plume derived melts indicate that these structures sample deep Earth geochemical and lithological heterogeneities. Studying plume-derived lavas can clarify important planetary-scale questions relating to the accretion of the Earth, primordial geochemical reservoirs, the fate of subducted materials, planetary differentiation, and convective mixing. === Ph. D. |
author2 |
Geosciences |
author_facet |
Geosciences Trela, Jarek |
author |
Trela, Jarek |
author_sort |
Trela, Jarek |
title |
The Evolution of the Galapagos Mantle Plume: From Large Igneous Province to Ocean Island Basalt |
title_short |
The Evolution of the Galapagos Mantle Plume: From Large Igneous Province to Ocean Island Basalt |
title_full |
The Evolution of the Galapagos Mantle Plume: From Large Igneous Province to Ocean Island Basalt |
title_fullStr |
The Evolution of the Galapagos Mantle Plume: From Large Igneous Province to Ocean Island Basalt |
title_full_unstemmed |
The Evolution of the Galapagos Mantle Plume: From Large Igneous Province to Ocean Island Basalt |
title_sort |
evolution of the galapagos mantle plume: from large igneous province to ocean island basalt |
publisher |
Virginia Tech |
publishDate |
2017 |
url |
http://hdl.handle.net/10919/77438 |
work_keys_str_mv |
AT trelajarek theevolutionofthegalapagosmantleplumefromlargeigneousprovincetooceanislandbasalt AT trelajarek evolutionofthegalapagosmantleplumefromlargeigneousprovincetooceanislandbasalt |
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1719493257350610944 |