Seitenhistorie

h5. Beach Sand, Oregon, USA

| !Oregon_coast_scen.jpg|thumbnail! | | !2_1.JPG|thumbnail! |
| Erosive coast near Florence, Oregon \\
{table-cell:width=30%}
{table-cell} | Macro |

| *Location:* \\ | near Florence, Oregon |
| *Depositional facies:* \\ | High-energy, erosive beach |
| *Provenance:* \\ | Magmatic arc, low-grade metamophic rocks |
| *Composition:* \\ | Quartz (likely from PRF), andesitic and basaltic VRF, a few dioritic PRF and subvolcanic and low-grade MRF |
| *Texture:* | medium-grained, rounding moderately to godd (depending on mineral hardness), very well sorted |

h6. Petrographic thin section:

| *Description:* | clear monocrystalline quartz in thin section (volc?), VRF, ch, silt (brown, rounded), hints of resolution embayments, accessory amph, epi, silicified VRF, zoned plag |

| !2-IMGP4999.jpg|thumbnail! | | !2-IMGP5000.jpg|thumbnail! |
| Bright field \\
{table-cell:width=30%}
{table-cell} | Dark field |

| *Sample number* | Heubeck0002 |
| *Collector* | Christoph Heubeck, Institut für Geologische Wissenschaften, FU Berlin |
| *Date of sampling* | 1999 |

h6. Comments:

A typical composition of a sand from a partly eroded magmatic arc on continental crust, exposing volcanic, metamorphic and plutonic rocks. Coastal photo from www.geocities.com/harald_nancy/oregon_coast.htm


[Additional data page|geowisssand:0002 Additional data]