Two similars for your consideration, Re: weathering

[nunyabiz111]

now given that one is a solid artifact-y looking thing while the other is mostly an "inclusion" encased within an artifact- y looking exterior, to what extent is a differential weathering effect responsible (if applicable) to either or both in their otherwise visually akin appearance?
Both found under similar circumstances within a general area:












am willing to give a thorough scrubbing to the yellow one (eventually) out of curiosity, if anything.

Thanks again for any/all input.

 

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[Tesorodeoro]

Weird looking rocks. I’m sure there is an answer. Trick is finding someone that knows.

Were you at the strip club when you took those pictures?

 

[Treasure_Hunter]

None are artifacts, they are weathered rocks.

 

[nunyabiz111]

Weird looking rocks. I’m sure there is an answer. Trick is finding someone that knows.

Were you at the strip club when you took those pictures?

well that'd be some gaudy granny pentecost hell of a strip club if it were, eh

 

[uniface]

Artifacts Latinate differently in different soils -- different chemistry = different colors. Rejoined halves thus sometimes are "two-tones" now.

FWIW

 

[nunyabiz111]

well i'll be damned..latination it is!

cheers, m8

 

[ToddsPoint]

Those rocks were part of larger rocks on the shore of a creek or river. Those grooves represent the water line. Water lapping over time made the grooves before the rocks finally eroded out. Very common. Gary

 

[uniface]

Fat fingers here. Latinate = Patinate.

 

[nunyabiz111]

Those rocks were part of larger rocks on the shore of a creek or river. Those grooves represent the water line. Water lapping over time made the grooves before the rocks finally eroded out. Very common. Gary

glacial tills deposited as riparian surface cobbles, whether lining the riverbanks or completely underwater, don't typically tend to stay sedentary or even remain superficially visible throughout the seasons long enough to experience such constant erosional forces as to develop "water lines", given the many river ice jamming/anchoring/scouring and siltation events that happen during the course of a year in this rather temperate climate of ours.

an observation of such, first conspicuously spotted on a january 28th:





roughly 3 months later, and a few meters noticeably downstream from where it was:

 

[nunyabiz111]

for additional context:




to add; river and creek shores where one can comfortably (if at all) walk alongside barefoot are few and far between in these parts

 

[monsterrack]

According to my friend with the the state department of DEQ, stone like these were laid down in big beds a very long time ago.1 layer being a harder type of deposit with maybe some small crushed rocks. Then the next layer is layed down let's just say a thick clay/mud. Many years go by an another layer of stronger material is layed down. Then after 1,000's of years the chemical compounds leach into each other making them close to the same color but not the same texture. 1,000's of years pass an due to glaciers, climate change, earthquakes and rise an fall of water level they crack then they move from were they were deposited in at the beginning. Over time the softer stone exposed to the elements will wear away leaving what we see now.

 

[nunyabiz111]

a last note regarding the original post; the yellow one can be mostly chipped away at with bare fingernails. i hesitate to call it 'clay', though the outer layer is evidently "concretioned" around the core cobble when handled.

a previous example i've used to attemptively illustrate such:



also worth mention is practically few-to-none of the cobbles laying about in the background are of regionally native bedrock or composition

 

[monsterrack]

Here in SW MS. we have no stone sorce other than a few quartzite deposits, with that being said you can find stone that comes from the Great Lakes region in cobbles in all the creek/stream beds. They were crushed by glaciers an when it melted an made ancient rivers it was deposited in very thick layers , some 400ft thick and some all the way to the Gulf of Mexico.

 

[Buckleberry]

According to my friend with the the state department of DEQ, stone like these were laid down in big beds a very long time ago.1 layer being a harder type of deposit with maybe some small crushed rocks. Then the next layer is layed down let's just say a thick clay/mud. Many years go by an another layer of stronger material is layed down. Then after 1,000's of years the chemical compounds leach into each other making them close to the same color but not the same texture. 1,000's of years pass an due to glaciers, climate change, earthquakes and rise an fall of water level they crack then they move from were they were deposited in at the beginning. Over time the softer stone exposed to the elements will wear away leaving what we see now.

Exactly!

 

[Charl]

It does resemble differential weathering. It can result via water, or, in the case of the formations called hoodoos, like the well known examples in Bryce Canyon National Park, it can result from wind erosion. It can happen on small and large scales. I don’t really know the specific circumstances of your finds, but they do resemble this type of weathering, resulting from a force+time.

 

[nunyabiz111]

Here in SW MS. we have no stone sorce other than a few quartzite deposits, with that being said you can find stone that comes from the Great Lakes region in cobbles in all the creek/stream beds. They were crushed by glaciers an when it melted an made ancient rivers it was deposited in very thick layers , some 400ft thick and some all the way to the Gulf of Mexico.

This region is ~1000mi North-East of the great lakes, with most of the superficial tills coming from the mid-upper Laurentide ice sheet that made its way through here going southeast. Subsequent reglaciation and thawing events consequently leading to massive ice lakes/dams and debris floods are somewhat understood to be the case in explaining today's surface geology in these parts.

 

[nunyabiz111]

It does resemble differential weathering. It can result via water, or, in the case of the formations called hoodoos, like the well known examples in Bryce Canyon National Park, it can result from wind erosion. It can happen on small and large scales. I don’t really know the specific circumstances of your finds, but they do resemble this type of weathering, resulting from a force+time.

indeed they do, although given the hoodoos assumed their current form through the ages in due cause to their static/immobile (ie: "bedrocked") nature as to where glacially deposited cobbles around here still get kicked around like an empty can when subject to ice drifts and riverbed scouring (likewise, possibly becoming entombed for ages in eroded debris deposited by said forces)

native bedrock with pools of superficially deposited foreign tills and muck:

 

[Tdog]

It does resemble differential weathering.

Yes! I think there's a forum here for this--Geofacts?

 

[nunyabiz111]

Yes! I think there's a forum here for this--Geofacts?

ey, you wouldn't be wrong in thinking you were outright being taken for a fool if instead i were here trying to qualify or quantify most anything our provincial scholarly esteems as being 'artifactual' or indicative of such...

https://www2.gnb.ca/content/gnb/en/departments/thc/heritage/content/archaeology/NBHCAartifactDiscovery.html

i mean..at least a few of my presented items seem like they were made to fit "right in your hand", no?

:bonghit: :bonghit:

 

[Treasure_Hunter]

Do not get caught up in how a rock fits your hand, rocks fit hands because that is the marvel of the human hand, not because they are artifacts.