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h5. Beach Sand, north Maui, |
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Maui north coast |
| Macro |
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Location:
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North coast of Maui (Hawaii), along coast road to Hana, mouth of a gorge to a short (few hundred meters) beach
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Depositional facies:
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Highly energetic beach
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Provenance:
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Hot-spot basalt
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Composition:
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Fine grained basalt. Plagioclase needles (microlithic structure) and clinopyroxenes swim in a hyaline, isotrop matrix
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Petrographic thin section:
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| Plagioclase needles | |
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Texture:
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Coarse grained, moderately rounded, well sorted basalt sand
Sample number | Collector | Date of sampling |
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heubeck0024 | Christoph Heubeck, Institut für Geologische Wissenschaften, FU Berlin | 1990 |
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Comments:
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Hawaii
| !0024_north_shore_scenery.jpg|thumbnail! | | !0024_makro.JPG|thumbnail! |
| Maui north coast \\
{table-cell:width=30%}
{table-cell} | Macro |
| *Location* \\ | North coast of Maui (Hawaii), along coast road to Hana, mouth of a gorge to a short (few hundred meters) beach |
| *Depositional facies* \\ | Highly energetic beach |
| *Provenance* \\ | Hot-spot basalt |
| *Composition* \\ | Fine grained basalt. Plagioclase needles (microlithic structure) and clinopyroxenes swim in a hyaline, isotrop matrix |
| *Texture* | Coarse grained, moderately rounded, well sorted basalt sand |
h6. Petrographic thin section:
| *Description* | Plagioclase needles (microlithic structure) and clinopyroxenes swim in a hyaline, isotrop matrix |
| !0024_th_s_IIsm.jpg|thumbnail! | | !0024_th_s_Xsm.jpg|thumbnail! |
| Bright field \\
{table-cell:width=30%}
{table-cell} | Dark field |
| *Sample number* | heubeck0024 |
| *Collector* | Christoph Heubeck, Institut für Geologische Wissenschaften, FU Berlin |
| *Date of sampling* | 1990 |
h6. Comments:
Die Nordküste von Maui empfängt mehrere 1000 mm Niederschlag jährlich und ist eine der regenreichsten Gegenden weltweit. Entsprechend intensiv ist Erosion und Verwitterung in einem subtropischen Klima. Wegen der steil eingeschnittenen Küste, dem kurzen Transportweg und der ständigen Aufbereitung an einem hochenergetischen Strand sind die dort anzutreffenden Basaltkörner recht frisch.
_replace this text with link to daughter page with additional data (Additional data page)_ |
