Mafic-plutonic sand, Antofagasta, Chile
|
| | ||
Sample area | Macro | | | |
Location |
...
North Chile, end of road along coast approx. 10 km south of Antofagasta | |
Depositional facies | Coast |
Provenance |
...
Gabbroid rocks on western slope of the Cerro Coloso | |
Composition |
...
White plagioclase, black hornblende, absence of quartz | |
Texture |
...
Coarse sand, poorly sorted, almost not transported detritus |
...
Petrographic thin section:
...
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 | Sample number | Collector | Date of sampling heubeck0128 - SA16 | |
|---|---|---|---|---|
Collector | Christoph Heubeck, Institut für Geologische Wissenschaften, FU Berlin | |||
Date of sampling | 2005 |
...
Comments:
...
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
