Thermal modeling of pluton emplacement and associated contact metamorphism:Parashi stock emplacement in the Serranía de Jarara (Alta Guajira, Colombia)
<p align="left">In the northernmost portion of the Serrania de Jarara (Alta Guajira, Colombia), low - medium grade metamorphic rocks from the Etpana Metamorphic Suite were thermally affected by emplacement of a small calc-alkaline intrusion (Parashi Stock). Detailed petrograp...
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| Format: | Article |
| Language: | English |
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Universidad Nacional de Colombia
2010-12-01
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| Series: | Earth Sciences Research Journal |
| Online Access: | http://www.revistas.unal.edu.co/index.php/esrj/article/view/20991 |
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| author | Zuluaga C. Carlos A. Martínez Lina Fernanda |
| author_facet | Zuluaga C. Carlos A. Martínez Lina Fernanda |
| author_sort | Zuluaga C. Carlos A. |
| collection | DOAJ |
| description | <p align="left">In the northernmost portion of the Serrania de Jarara (Alta Guajira, Colombia), low - medium grade metamorphic rocks from the Etpana Metamorphic Suite were thermally affected by emplacement of a small calc-alkaline intrusion (Parashi Stock). Detailed petrographic analysis in collected rock samples across the NE and NW plutonic contacts show occurrences of textural and mineralogical changes in the country rock fabric that evidence contact metamorphism overprinting regional metamorphism of the Etpana Suite. These changes include growth of andalusite (chiastolite), calcic clinopyroxeneand amphibole porphyroblast crosscutting Sn+1 metamorphicfoliation. Hornblende-plagioclase barometry (ca. 3.1 kbar) and cooling models for the stock show maximum time temperature evolution in the country rock at the interpreted depth of intrusion (ca. 11 km) and help to evaluate the behavior of the country rock with the changing local geotherm.</p> |
| format | Article |
| id | doaj-art-e0f4eb78fdcd48a6bb9d673ff3205069 |
| institution | Kabale University |
| issn | 1794-6190 |
| language | English |
| publishDate | 2010-12-01 |
| publisher | Universidad Nacional de Colombia |
| record_format | Article |
| series | Earth Sciences Research Journal |
| spelling | doaj-art-e0f4eb78fdcd48a6bb9d673ff32050692025-08-20T03:53:38ZengUniversidad Nacional de ColombiaEarth Sciences Research Journal1794-61902010-12-01142145152Thermal modeling of pluton emplacement and associated contact metamorphism:Parashi stock emplacement in the Serranía de Jarara (Alta Guajira, Colombia)Zuluaga C. Carlos A.Martínez Lina Fernanda<p align="left">In the northernmost portion of the Serrania de Jarara (Alta Guajira, Colombia), low - medium grade metamorphic rocks from the Etpana Metamorphic Suite were thermally affected by emplacement of a small calc-alkaline intrusion (Parashi Stock). Detailed petrographic analysis in collected rock samples across the NE and NW plutonic contacts show occurrences of textural and mineralogical changes in the country rock fabric that evidence contact metamorphism overprinting regional metamorphism of the Etpana Suite. These changes include growth of andalusite (chiastolite), calcic clinopyroxeneand amphibole porphyroblast crosscutting Sn+1 metamorphicfoliation. Hornblende-plagioclase barometry (ca. 3.1 kbar) and cooling models for the stock show maximum time temperature evolution in the country rock at the interpreted depth of intrusion (ca. 11 km) and help to evaluate the behavior of the country rock with the changing local geotherm.</p>http://www.revistas.unal.edu.co/index.php/esrj/article/view/20991 |
| spellingShingle | Zuluaga C. Carlos A. Martínez Lina Fernanda Thermal modeling of pluton emplacement and associated contact metamorphism:Parashi stock emplacement in the Serranía de Jarara (Alta Guajira, Colombia) Earth Sciences Research Journal |
| title | Thermal modeling of pluton emplacement and associated contact metamorphism:Parashi stock emplacement in the Serranía de Jarara (Alta Guajira, Colombia) |
| title_full | Thermal modeling of pluton emplacement and associated contact metamorphism:Parashi stock emplacement in the Serranía de Jarara (Alta Guajira, Colombia) |
| title_fullStr | Thermal modeling of pluton emplacement and associated contact metamorphism:Parashi stock emplacement in the Serranía de Jarara (Alta Guajira, Colombia) |
| title_full_unstemmed | Thermal modeling of pluton emplacement and associated contact metamorphism:Parashi stock emplacement in the Serranía de Jarara (Alta Guajira, Colombia) |
| title_short | Thermal modeling of pluton emplacement and associated contact metamorphism:Parashi stock emplacement in the Serranía de Jarara (Alta Guajira, Colombia) |
| title_sort | thermal modeling of pluton emplacement and associated contact metamorphism parashi stock emplacement in the serrania de jarara alta guajira colombia |
| url | http://www.revistas.unal.edu.co/index.php/esrj/article/view/20991 |
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