Data · collection
Alkali basalt volcanism along a subduction-related magmatic arc: The case of Puyuhuapi Quaternary volcanic line, Southern Andes (44deg20minS)
Listed in NASA Earthdata CMR
In Southern Chile, plate configuration is characterized by ridge-ridge-trench collision in correspondence of Taitao peninsula (Chile triple junction).
Description
The different converging rates of Nazca and Antarctic plates favored the formation of a forearc sliver (Chiloe block) limited to west by a dextral transcurrent fault system, Known as Liquine-Ofqui fault system (LOFS). During the Quatenary time, a series of monogenetic volcanic centers, as Puyuhuapi volcanic centers (PVC), formed along the LOFS.
The PVC lavas have a primitive character; two groups and can be distinguihed. Group-1 rocks show a K-AlKaline affinity and are nepheline normative with olivine and plagioclase as dominant phases. Group-2 lavas have Na-affinity with olivine and hyperstene in the norm; olivine is the most abundant mineral phase.
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In contrast with overall alkaline affinity of PVC, the products from the neighboring central composite volcanoes are generally calcalkaline with the exception of the lavas from Maca Volcano, which show tholeiitic affinity.
Links
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214615254-SCIOPS.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214615254-SCIOPS.umm_json ↗
metadata API · from NASA CMR
Topics
Provenance · 1 source records, 16 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214615254-SCIOPS | 10 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:electron-microprobes | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:icp-ms | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:spectrometers | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:xrf | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/solid-earth/rocks-minerals-crystals/elements/major-elements | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/solid-earth/rocks-minerals-crystals/elements/trace-elements | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/solid-earth/rocks-minerals-crystals/igneous-rocks | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/solid-earth/tectonics/volcanic-activity/eruption-dynamics/lava-composition-texture | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:ground-stations | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |