DEEP-LEVEL GEODYNAMICS: BOUNDARIES OF THE PROCESS ACCORDING TO GEOCHEMIC AND PETROLOGIC DATA
Geochemical features for volcanic rocks and petrologic data for deep-seated inclusions, which can be used to infer mass transfer between different geospheres, are reviewed. It is typically believed that slabs can subduct as deep as the core-mantle boundary with the following recycling by plumes comi...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust
2015-09-01
|
| Series: | Геодинамика и тектонофизика |
| Subjects: | |
| Online Access: | https://www.gt-crust.ru/jour/article/view/99 |
| _version_ | 1826557646007697408 |
|---|---|
| author | Alexei V. Ivanov |
| author_facet | Alexei V. Ivanov |
| author_sort | Alexei V. Ivanov |
| collection | DOAJ |
| description | Geochemical features for volcanic rocks and petrologic data for deep-seated inclusions, which can be used to infer mass transfer between different geospheres, are reviewed. It is typically believed that slabs can subduct as deep as the core-mantle boundary with the following recycling by plumes coming up to the sublithospheric regions of magma generation. However, the petrologic evidence of the deepest accessible material is limited by the depth of the uppermost lower mantle (~650–700km), i.e. by the depth of the deepest earthquakes. Ferropericlase inclusions in some diamonds do not exclude involvement of deeper mantle horizons, yet do not unambiguously support it. No unambiguous confirmation of involvement of the lower mantle into magma generation underneath volcanically active regions is obtained from geochemical data either, while the geochemical data suggest complete chemical isolation of the Earth’s core from the upper mantle processes. |
| first_indexed | 2024-04-09T20:28:43Z |
| format | Article |
| id | doaj.art-672253eb73de4dbb8bf2e37b606aa9b7 |
| institution | Directory Open Access Journal |
| issn | 2078-502X |
| language | English |
| last_indexed | 2025-03-14T08:31:54Z |
| publishDate | 2015-09-01 |
| publisher | Russian Academy of Sciences, Siberian Branch, Institute of the Earth's crust |
| record_format | Article |
| series | Геодинамика и тектонофизика |
| spelling | doaj.art-672253eb73de4dbb8bf2e37b606aa9b72025-03-02T13:02:44ZengRussian Academy of Sciences, Siberian Branch, Institute of the Earth's crustГеодинамика и тектонофизика2078-502X2015-09-01118710210.5800/GT-2010-1-1-000898DEEP-LEVEL GEODYNAMICS: BOUNDARIES OF THE PROCESS ACCORDING TO GEOCHEMIC AND PETROLOGIC DATAAlexei V. Ivanov0Institute of the Earth’s Crust, Siberian Branch of RASGeochemical features for volcanic rocks and petrologic data for deep-seated inclusions, which can be used to infer mass transfer between different geospheres, are reviewed. It is typically believed that slabs can subduct as deep as the core-mantle boundary with the following recycling by plumes coming up to the sublithospheric regions of magma generation. However, the petrologic evidence of the deepest accessible material is limited by the depth of the uppermost lower mantle (~650–700km), i.e. by the depth of the deepest earthquakes. Ferropericlase inclusions in some diamonds do not exclude involvement of deeper mantle horizons, yet do not unambiguously support it. No unambiguous confirmation of involvement of the lower mantle into magma generation underneath volcanically active regions is obtained from geochemical data either, while the geochemical data suggest complete chemical isolation of the Earth’s core from the upper mantle processes.https://www.gt-crust.ru/jour/article/view/99mantle, subduction, recycling, deep-level geodynamics |
| spellingShingle | Alexei V. Ivanov DEEP-LEVEL GEODYNAMICS: BOUNDARIES OF THE PROCESS ACCORDING TO GEOCHEMIC AND PETROLOGIC DATA Геодинамика и тектонофизика mantle, subduction, recycling, deep-level geodynamics |
| title | DEEP-LEVEL GEODYNAMICS: BOUNDARIES OF THE PROCESS ACCORDING TO GEOCHEMIC AND PETROLOGIC DATA |
| title_full | DEEP-LEVEL GEODYNAMICS: BOUNDARIES OF THE PROCESS ACCORDING TO GEOCHEMIC AND PETROLOGIC DATA |
| title_fullStr | DEEP-LEVEL GEODYNAMICS: BOUNDARIES OF THE PROCESS ACCORDING TO GEOCHEMIC AND PETROLOGIC DATA |
| title_full_unstemmed | DEEP-LEVEL GEODYNAMICS: BOUNDARIES OF THE PROCESS ACCORDING TO GEOCHEMIC AND PETROLOGIC DATA |
| title_short | DEEP-LEVEL GEODYNAMICS: BOUNDARIES OF THE PROCESS ACCORDING TO GEOCHEMIC AND PETROLOGIC DATA |
| title_sort | deep level geodynamics boundaries of the process according to geochemic and petrologic data |
| topic | mantle, subduction, recycling, deep-level geodynamics |
| url | https://www.gt-crust.ru/jour/article/view/99 |
| work_keys_str_mv | AT alexeivivanov deeplevelgeodynamicsboundariesoftheprocessaccordingtogeochemicandpetrologicdata |