@archeaids@mastodon.online
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archeaids

@archeaids@mastodon.online

Him/he male Southeast USA archaeologist posting about archaeology, history, botany, geology, maps, LiDAR, & more. Twitter: @J_Green_505

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archeaids, to random
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I've been flintknapping since about 1979, mostly using Citronelle gravel chert, which varies greatly. However, I've picked up or traded rocks from Oregon to west Texas & Florida & Maryland. Pardon me if after 45 years I can't remember exactly where some of it came from.😵‍💫

archeaids, to Archaeology
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More recovered lithic material from the old shed. Here is a large flake of red & lavender Alibates agatized dolomite flint from the same stone that I used to make this Dalton point.

Lavender & rose color Dalton point with side indentations for hafting & concave base all on a black background.

archeaids, to Archaeology
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Comparing & selecting for publication among 30 microscope photos of 3 different magnifications (6.3x, 16x & 25x) composed of 5 black novaculite samples, 3 Big Fork chert samples & the 1 Tew site black flake.

I'm getting a headache...

archeaids, to random
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A thin piece of Oligocene silicified wood from west-central Louisiana. The magnified view looks like an abstract painting.

archeaids, to wildflowers
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The zigzag irises are starting to bloom. Each plant will have a bloom near each angle change of the stem, 3 to 4.

archeaids, to nature
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Eastern Eyed Click Beetle (Alaus oculatus).

archeaids, to random
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Favosites or Favosites-like tabulate coral dating from the Late Ordovician to Late Permian. Found in crushed dolomite aggregate.

archeaids, to random
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I'm board...

archeaids, to Archaeology
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Awaiting inspiration: L>R) Catahoula quartzitic sandstone (west-central Louisiana), multi-colored novaculite (Ouachita Mountains, Arkansas), & Tallahatta "quartzite" silicified sandstone (east-central Mississippi).

archeaids, to random
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In the late 19th & early 20th C. there were several studies, some by the US Forestry Department, on the best wood, shape, preservative & longevity of crossties. Treated crossties were used for railroad lines, but logging & mining trams more often used untreated crossties & a mix of wood types since the tracks were temporary.

archeaids, to random
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These were not used in construction. They were driven into the end of the occasional crosstie(s) being replaced or above the ground on a utility pole so they could tell how long the crosstie/pole had been there.

archeaids, to Archaeology
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United States railroad date nails ranging from 1921 to 1950. Date nails were used on utility poles & railroad crossties (not every crosstie) from about 1900 into the 1970s. They have an embossed 2-digit year designation (e.g. "41" = 1941).

archeaids, to Flowers
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Seven Sisters bush rose is loaded with

archeaids, to Archaeology
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Fragment of a hollow ferruginous sandstone concretion with red ochre on the interior surface.

archeaids, to Archaeology
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Thermal alteration pebble 4: Citronelle Formation (Left) brown gravel chert biface with white cortex & near-cortex & (Right) post-heat treating red & pinkish-gray color change. No apparent luster change.

archeaids, to random
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Oligocene silicified wood from west-central Louisiana. One side (right) exhibits the warped grain of a branch attachment knot.

archeaids,
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@Basmitharts In the region it occurs within in eastern Texas & western Louisiana it depends on the terrain. It is often found in creek bottoms, gullies & hill slopes. Most of the small pieces I show came from the shoreline of Toledo Bend Reservoir where it can be found as a thin spread of gravel in places.

archeaids,
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@Basmitharts While working on a seismograph crew in east-central Texas in the early 1980s we would find entire 100' logs with 20' branches in the hills. At the time there were several firms in Houston that built petrified wood fireplaces. When the Toledo Bend dam site was excavated in the early 1960s they unearthed a few dozen whole petrified logs of various species.

ipxfong, to AncientHistory
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So, @archeaids has been posting some cool flaked tools and that reminded me about this rad quartz preform I found out by Reserve.

The same flake seen end on.
The same flake seen from the side.

archeaids,
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@ipxfong That doesn't look like quartz to me with that fine grain. If it was over here I'd call it novaculite, but over there probably a white translucent chalcedonic material.

archeaids,
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@ipxfong Eh, SW New Mexico.

archeaids, to Archaeology
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Backlighted microscopic views of the corallites as asterisk shapes & striations within the 6 coral flakes.

archeaids, to Archaeology
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Thermally altered (heat-treated) flakes of agatized (fossil) coral from the Tampa Bay region of Florida.

archeaids, to Archaeology
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The Florida chert preform was next to this Citronelle gravel chert blank. Color change of different chert for comparison.

archeaids, to Archaeology
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Thermal alteration result of a modern triangular preform made from north-central Florida fossiliferous chert. A change from 10YR8/2, 2.5Y8/1 & 5Y7/6 to a 7.5YR6/3, 5YR7.2 & 2.5YR7/4. No luster change.

archeaids, to random
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Fresh dewberries from the yard.

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