| 词条 | Aguiliri |
| 释义 |
GeologyThe complex is constructed in the sides of a tectonic horst and includes andesitic structures ({{lang|es|Cerro Chingolo}}) and porphyric dacitic ones like Aguiliri.[3]{{rp|5}} The centre consists of three dacitic lava domes and a dacitic stock intruded in Tertiary sediments and basement. The complex's composition is dacitic and biotites in the complex are K-Ar dated 12.7 mya ago, of Middle Miocene age. The complex was originally a cryptodome complex that was exposed by erosion.[5]{{rp|258}} Plagioclase phenocrysts are contained in the dacite, as well as more derived allanite, biotite, plagioclase, quartz and other minerals. Inclusions of apatite, monazite and zircon are also contained in allanite.[6] Uranium minerals are found associated with iron and manganese oxide, marcasite and pyrite.[3]{{rp|5}} The local geology consists of Ordovician marine sediments with local pre-Ordovician outcrops. During the Oligocene-Miocene, the Pehuenche orogeny caused widespread sedimentation in the region, forming the Log Log Formation. Large scale andesitic, dacitic and rhyolitic activity commenced during the Miocene Quechua orogeny, forming the Aguiliri centre.[3]{{rp|3–4}} Uranium depositsThe uranium mineral autunite is found in the country rock surrounding the dome.[9] This mineral was probably formed by volatile activity acting on the dacites.[2] Meta-autunite, meta-orbernite and sabugalite are also found.[3]{{rp|5}} The complex was drilled {{convert|225|m}}.[12]{{rp|84}} References1. ^1 {{cite web|url=http://ama.gl.fcen.uba.ar/files/8513/4421/3888/CLASE_9.pdf |title=CLASIFICACIÓN DE STRUNZ Y NICKEL (2001) |work=CLASE 9: SILICATOS |language=es }} [1][2][3][4][5][6]2. ^1 2 3 4 {{cite book|author=Centro de Informacion Tecnologica|title=Informacion Tecnologica|url=https://books.google.com/books?id=xlOV3M2tUgYC&pg=PA13|date=January–December 1989|publisher=Centro de Informacion Tecnologica|issn=0716-8756 | language=es}} 3. ^1 {{cite book|author=Universidad del Norte (Chile). Departamento de Geociencias|title=Actas: Area 3. Geología economia y metalogenesis. Area 5. Hidrogeologia, geología aplicada y geomorfologia|url=https://books.google.com/books?id=IMhOAQAAIAAJ|year=1985|publisher=El Departamento|language=es}} 4. ^1 2 {{cite web | url=http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/17/021/17021959.pdf#page=315 | title=Uranium deposits in volcanic rocks | publisher=International Atomic Energy Agency | work=Proceedings of a technical committee meeting El Paso, Texas | date=October 1985 | accessdate=August 29, 2015 | page=309 | ISBN=92-0-041085-5}} 5. ^1 {{cite journal|last1=Leroy|first1=Jacques L.|last2=George-Aniel|first2=Brigitte|title=Volcanism and uranium mineralizations: the concept of source rock and concentration mechanism|journal=Journal of Volcanology and Geothermal Research|volume=50|issue=3|year=1992|pages=247–272|issn=0377-0273|doi=10.1016/0377-0273(92)90096-V}} 6. ^1 {{cite book|title=Uranium Resources, Production, and Demand: A Joint Report|url=https://books.google.com/books?id=eZm0AAAAIAAJ|year=1986|publisher=Organisation for Economic Co-operation and Development}} }}{{coord missing|Argentina}}{{Mining-stub}}{{Volcanology-stub}} 2 : Volcanoes of Antofagasta Region|Volcanoes of Jujuy Province |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。