Academic Journal
Fe-Ni-Cu-Pge Sulfide Transport Mechanisms And Carbon-Sulfur Interactions In Lower Crustal Magmatic Settings: A Study From The Valmaggia Ultramafic Pipe, Ivrea-Verbano Zone, Italy
| العنوان: | Fe-Ni-Cu-Pge Sulfide Transport Mechanisms And Carbon-Sulfur Interactions In Lower Crustal Magmatic Settings: A Study From The Valmaggia Ultramafic Pipe, Ivrea-Verbano Zone, Italy |
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| المؤلفون: | Clark, Shelby Leann |
| المصدر: | Masters Theses |
| بيانات النشر: | Scholars' Mine |
| سنة النشر: | 2024 |
| المجموعة: | Missouri University of Science and Technology (Missouri S&T): Scholars' Mine |
| مصطلحات موضوعية: | Hydrous metasomatism, Ivrea-Verbano Zone, LA-ICP-TOF-MS, Magmatic sulfide deposit, Metal and volatile mass transfer, Ultramafic-mafic magmatism, Geological Engineering, Petroleum Engineering |
| الوصف: | "Constraining the processes that control the transport and deposition of sulfides in the deep lithosphere is an important step in expanding ore deposit exploration search space to include exhumed lower crustal rocks. The ultramafic sulfide ore-bearing Valmaggia pipe in the Ivrea-Verbano Zone of NW Italy, an exhumed cross section of the overlying lower continental crust and subcontinental lithospheric mantle, gives critical insight into metallogenic processes in lower crustal settings. The ~300 m wide metasomatized pipe hosts Fe-Ni-Cu-(PGE±Co±Au) sulfide mineralization that is commonly associated with locally abundant carbonates and hydrous silicates (phlogopite, amphibole). Previous studies suggested that sulfides were physically transported into the pipe via vapor bubble flotation of sulfide droplets. In order to test this hypothesis, petrography is combined with electron microprobe analysis, and laser ablation time-of-flight ICP-MS trace element maps of sulfide/volatile relationships. Results show that sulfide textures vary between semi-massive to disseminated blebs that are commonly in textural or spatial relationship with volatiles. Carbonates and hydrous silicates exist in various and randomly distributed sizes, textures, orientations, and compositions in relation to sulfides. The data shows that bubble-pair transport cannot fully explain the variability of volatile orientations, or textural and compositional relationships. Instead, it is argued that the observed variability of the textures and chemical relationships in the pipe resulted from the co-precipitation of carbonates and sulfides from the same fluid/melt"-- Abstract, p. iii |
| نوع الوثيقة: | text |
| وصف الملف: | application/pdf |
| اللغة: | unknown |
| Relation: | https://scholarsmine.mst.edu/masters_theses/8219; https://scholarsmine.mst.edu/context/masters_theses/article/9222/viewcontent/Clark_Shelby_Leann_2024.pdf; https://scholarsmine.mst.edu/context/masters_theses/article/9222/filename/0/type/additional/viewcontent/Clark_Shelby_Leann_2024_Supplmentary_file.xlsx |
| الاتاحة: | https://scholarsmine.mst.edu/masters_theses/8219 https://scholarsmine.mst.edu/context/masters_theses/article/9222/viewcontent/Clark_Shelby_Leann_2024.pdf https://scholarsmine.mst.edu/context/masters_theses/article/9222/filename/0/type/additional/viewcontent/Clark_Shelby_Leann_2024_Supplmentary_file.xlsx |
| Rights: | ©2024 Shelby Leann Clark , All Rights Reserved |
| رقم الانضمام: | edsbas.789B95F0 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |