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A roadcut exposes pillow basalts of the Franciscan subduction complex just downstream of Nicasio Reservoir, Marin County, Califronia.
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- Contact between Fauquier Formation marble and Catoctin Formation greenstone, near Lime Kiln Road, Virginia by Callan Bentley
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The contact between the metasedimentary Fauquier Formation (uppermost marble member) and the overlying metavolcanic Catoctin Formation is exposed in an abandoned quarry north of Aldie, Virginia, across Goose Creek from Lime Kiln Road. The nature of this contact (is it conformable? does it show primary or tectonic struc...
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- Contact between Fauquier Formation marble and Catoctin Formation greenstone, near Lime Kiln Road, Virginia by Callan Bentley
-
The contact between the metasedimentary Fauquier Formation (uppermost marble member) and the overlying metavolcanic Catoctin Formation is exposed in an abandoned quarry north of Aldie, Virginia, across Goose Creek from Lime Kiln Road. The nature of this contact (is it conformable? does it show primary or tectonic struc...
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- Contact between Fauquier Formation marble and Catoctin Formation greenstone, near Lime Kiln Road, Virginia by Callan Bentley
-
The contact between the metasedimentary Fauquier Formation (uppermost marble member) and the overlying metavolcanic Catoctin Formation is exposed in an abandoned quarry north of Aldie, Virginia, across Goose Creek from Lime Kiln Road. The nature of this contact (is it conformable? does it show primary or tectonic struc...
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- Total Views
- 291
- Explore Score
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- Contact between Fauquier Formation marble and Catoctin Formation greenstone, near Lime Kiln Road, Virginia by Callan Bentley
-
The contact between the metasedimentary Fauquier Formation (uppermost marble member) and the overlying metavolcanic Catoctin Formation is exposed in an abandoned quarry north of Aldie, Virginia, across Goose Creek from Lime Kiln Road. The nature of this contact (is it conformable? does it show primary or tectonic struc...
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- Total Views
- 240
- Explore Score
- 31
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Part of an exposure of weathered Mesozoic-aged pillow basalts on the west end of Kirby Cove in Marin County, CA.
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A roadcut through Columbia River Flood Basalts that were erupted into a shallow body of water. The basaltic lava interacted with the water to form both pillows and palagonite. Edi and Berti did a little rockclimbing here, too.
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Located near the Sir James Open Pit this exposure is now somewhat weathered, but if you look closely you can see the outlines of some spectacular pillow lavas, evidence that there lavas were extruded on the seafloor before being incorporated into the Superior Craton.
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