Friday, July 19, 2019

7/19/19 Report - Latest 1715 Fleet Finds . 16th Century Florida Artifacts. Detecting a Battle Site.


Written by the TreasureGuide for the exclusive use of treasurebeachesreport.blogspot.com.

Reales Recently Salvaged by Captain Jonah and the Crew of the Bottomline.
Photo submitted by Jonah Martinez.
Captain Jonah said these new reales were found in areas that had previously been worked over, and that just goes to show how much treasure remains to be found from the 1715 Fleet.

Thanks Jonah!

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16th century artifacts are being uncovered by archaeologists on private property in St. Augustine at a construction site.

Included are ceramics, a lock, and items from a print shop.

“We have found evidence of the print shop. We found at least four typesets, newsprint typesets, which is pretty cool. ... I think we found an N, and a C and an H,” White said.

Here is the link.

https://www.staugustine.com/news/20190717/centuries-old-ceramics-other-artifacts-found-at-st-augustine-construction-

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DJ sent me a link to an excellent report on the Custer battle site.  It provides some excellent insight for detectorists, including the use of historic topographic maps and metal detectors.  Here are just three paragraphs from a report that you might find very interesting.

A preliminary assessment of various historic maps was conducted to determine which may be the most reliable in depicting the 1876 river channel. The method involved georeferencing the historic maps to the modern topographic and aerial photography and establishing a root mean square error calculation. This objective analysis was coupled with a subjective analysis of the river channel and terrain features depicted on the subject map. A preliminary assessment of the historic maps suggests that Maguire Map 8 and the Norris map have potential to aid in sorting out the 1876 river channel if used judiciously. The 1883 Blake map may show the river meanders most accurately in the area of the Custer field than other maps preceding or post-dating it. The 1891 topographic map seems to be generally correct except for the location of the southernmost oxbow at Custer field, which is the one currently threaten by erosion.

The absence of metal in the detectable range and the preliminary assessment of the historic maps suggest the oxbows are not likely to contain archeological evidence of the battle.  However, no formal geomorphological investigation of the river channel, abandoned river channels, or the oxbows has been undertaken to date. It is recommended, before determining if additional mitigation measures are required a professional geomorphological study of the river channel is done. Such a study has the potential to posit chronological changes in the riverbed and more accurately define the 1876 channel, as well as determine if historic surfaces may still exist as buried soil horizons.

Since field time permitted a more formal test of the capability of the VLF and PI metal detectors was undertaken. Two previously inventoried areas were redetected. One test area encompassed a known warrior fighting position and the other was a known soldier position. Each area yielded additional artifacts.  Fifty-seven percent of the artifacts were not battle-related, 43% were battle related, 90% were found by the VLF machines, and 10% were found by the PI metal detector alone. The test indicates the 1984 sample strategy was sound in that it did recover a representative sample of the range of artifact types present.  The PI metal detector did find about 10% more than the VLF machines. Most of those items were either deeper than the capability of the VLF machines or were items that were very small and were missed by the VLF machines. The test grids indicate the PI metal detector has the potential to increase artifact recovery in areas where materials may include very small or deeply buried artifacts.


https://www.friendslittlebighorn.com/LittleBighornOxbowArcheologicalReport.pdf

Not long ago I encouraged the use of topographic maps to determine changes in the beach over the  years and decades.  That can tell you how the beach has been changing, including where it has been building and eroding over a period of time.  That kind of information will tell you a lot about where targets of different time periods might be found.  If done well, it can give you an idea of how deep to expect old targets in various areas.

As you can see, the article discussed the relative effectiveness of different types of detectors.  Although interesting, I wouldn't draw too many conclusions from that.  A lot depends upon how the detectors were used.  That is as important or more important than the capabilities of the detector.

In any case, I think you'll find the article interesting.

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(CNN)A heat wave is expected for much of the eastern half of the US in the coming days -- and it has the potential to be deadly.


More than 130 million Americans are under a heat watch, warning or advisory, with the heat index expected to reach 115 degrees in some areas. The widespread heat wave will hit its peak Friday and Saturday with dozens of records possible...

https://www.cnn.com/2019/07/18/us/heat-wave-survival-tips-wxc-trnd/index.html

Take stay hydrated and take precautions to avoid heat related illness.  

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A one to two foot surf is expected for the next few days on the Treasure Coast.

There is currently not tropical cyclone activity in the area.

Happy hunting,
Treasureguide@comcast.net