File:Migmatite gravestone (Hanover Cemetery, Hanover, Ohio, USA) 6.jpg
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Original file (4,000 × 2,427 pixels, file size: 8.41 MB, MIME type: image/jpeg)
Captions
Captions
Hanover Cemetery
Summary
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| Description |
English: Gravestones (a.k.a. headstones / tombstones) in modern American cemeteries are usually made of "granite" - a term in the retail trade for any hard stone that will take a fine polish. Geologically, some are granites and some are not. In the 1800s, many gravestones were made of marble, a crystalline-textured metamorphic rock composed of calcite (calcium carbonate, CaCO3). Rainwater is naturally acidic (slightly), with carbonic acid - H2CO3. Over time, marble will slowly dissolve in rainwater. Older marble gravestones typically have poorly legible carvings.
This gravestone is composed of migmatite, a metamorphic rock subjected to partial melting. Migmatite has both a crystalline and a foliated texture. |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/53972526460/ |
| Author | James St. John |
Licensing
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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/53972526460. It was reviewed on 27 September 2024 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 01:18, 27 September 2024 | | 4,000 × 2,427 (8.41 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/53972526460/ with UploadWizard |
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