Mafic-plutonic sand, Antofagasta, Chile
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Sample area | Macro |
Location |
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North Chile, end of road along coast approx. 10 km south of Antofagasta |
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Depositional facies | Coast |
Provenance |
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Gabbroid rocks on western slope of the Cerro Coloso |
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Composition |
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White plagioclase |
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, black hornblende, absence of quartz |
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Texture |
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Coarse sand, poorly sorted, almost not transported detritus |
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Sample Number:
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number of the sample
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Collector:
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Collector of the sand, Institution
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Date:
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Date of sampling
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Comments:
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Petrographic thin section:
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Description | insert here short description of thin section |
insert here a bright field image |
| insert here a dark field image |
Bright field | Dark field |
Sample number | heubeck0128 - SA16 |
Collector | Christoph Heubeck, Institut für Geologische Wissenschaften, FU Berlin |
Date of sampling | 2005 |
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Comments:
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The Cerro Coloso is a "core complex" of mafic, plutonic rocks. They are found at > 1000 m on top of the cliff. The slope is described as an "angle of repose" and is covered by salt incrusted gravel and dune sands
Additional data pageFurther comments on the sand, depositional history, ecc.