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Prehistoric Acoustics & Megalithic Noises

Ringing Rocks Barren Block Field, East-Central Pennsylvania.
Abstract:

Huge residual boulders on and near the surface of the woodlands on the slopes of Coffman Hill probably are corestones of a for derived from the early Jurassic diabase sill.

Accordingly, they were produced in two stages - first by chemical weathering along joints before Cenozoic regional uplift, then by exhumation of the blocks during Cenozoic dissection of the old lowland surface.

The Ringing Rocks barren block field within the woodlands probably resulted from local mass transport of large boulders from a higher part of Coffman Hill by periglacial creep and solifluction during the Pleistocene epoch.

Loss of forest cover and removal of matrix from the patch of boulders exposed the blocks to further mechanical and chemical weathering. Persistent shattering of the boulders along joints and minor movement of smaller derived blocks destroyed any inherited debris-flow pattern.

Pitting on the bare joint surfaces has resulted from effective solution by rain in the absence of forest shelter and a mantle of soil. In contrast, exfoliation predominates in the surrounding wooded residual boulder field.
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Source: Psilovikos, A., & Van Houten, F. B. (1982).
Ringing rocks barren block field, East-Central Pennsylvania. Sedimentary Geology, 32(3), 233–243.
 

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  • Psilovikos, A., & Van Houten, F. B. (1982). Ringing rocks barren block field, East-Central Pen...pdf
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Those Ringing Rocks’ of Bucks County, Pennsylvania.
Overview:

In Upper Black Eddy, Pennsylvania, there are rocks which mysteriously ring when struck with a hammer. Not all of the rocks ring. The boulder field is shaped like an hour glass. The rock, which is diabase, has a white metal in it. Some of the metal is molybdenum but the rest is unknown.

Source: Cruickshank, W. D. (1971). Those Ringing Rocks’ of Bucks County, Penna. Rocks & Minerals, 46(2), 117–127.
 

Attachments

  • Cruickshank, W. D. (1971). Those Ringing Rocks’ of Bucks County, Penna. Rocks & Minerals, 46(2...pdf
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Awi Kuseyaay: The Ringing Rock of San Bernardo.
Abstract:

Ringing rocks were, and still are, an important part of the cultural landscape for the Kumeyaay people of San Diego County.

This report discusses the anthropological and historical documentation that is available concerning one such "ringing rock" or "bell rock" in the San Pasqual Valley, and describes its recent relocation
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Source: Caprico, Richard L. “Awi Kuseyaay: The Ringing Rock of San Bernardo.” Journal of California and Great Basin Anthropology, vol. 31, no. 1, 2011, pp. 98–101
 

Attachments

  • Caprico, Richard L. “’Awi Kuseyaay The Ringing Rock of San Bernardo.” Journal of California an...pdf
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Awi Kuseyaay: The Ringing Rock of San Bernardo.
Abstract:

Ringing rocks were, and still are, an important part of the cultural landscape for the Kumeyaay people of San Diego County.

This report discusses the anthropological and historical documentation that is available concerning one such "ringing rock" or "bell rock" in the San Pasqual Valley, and describes its recent relocation
View attachment 80340
Source: Caprico, Richard L. “Awi Kuseyaay: The Ringing Rock of San Bernardo.” Journal of California and Great Basin Anthropology, vol. 31, no. 1, 2011, pp. 98–101
Watched something about the ringing stone/s not too long ago on TV. Something about they contain a very high concentration of quartz crystal, or something like that?
 
Watched something about the ringing stone/s not too long ago on TV. Something about they contain a very high concentration of quartz crystal, or something like that?

The crystalline structure probably has a lot to do with the ability to emit sounds of a certain frequency. However, I have seen huge blocks of quartz weighing 100 pounds or more that do not produce those types of sounds. Maybe the geographical location where they are may have something to do with it, some type of magnetic current.

We should also analyze the type of material with which the percussion is carried out.
<Of particular interest to me are lithophones in the form of bedrock-mortars or cupules because I have investigated them in the field on several trips.
 
MegaSound, Sound in Irish Megalithic Buildings
Abstract:

Stimulated by the studies done by Paul Deveraux and Robert Jahn, research has been conducted on the sound properties of two megalithic chambers is Ireland: Dowth South and Fourknocks I.

As reference measurements two normal rooms (bed- and bathroom) have been studied. The following aspects will be covered in the presentation: some theoretical background on acoustical modes (within a passage, a chamber, and a combination of them: Helmholtz resonator); tips for doing sound experiments inside megalithic chambers (like: equipment, measurement software, power provisioning and calibrating); frequency response measurements (between 20 and 200 Hz) for the surveyed chambers/rooms; comparison of the results with other researchers' results; background on the pitch of the human (male, female, and child) voices in neolithic times and recommendations for future research.

The presentation also provides insight in the aeralization (simulation) of sound in a megalithic chamber, covering: software that can do these simulations; issues in finding the basic information, e.g., acoustic absorption coefficients and provide examples of the results. I would like to thank all the people who have provided constructive feedback on my work
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Source: Reijs, Victor . MegaSound, Sound in Irish Megalithic Buildings The Journal of the Acoustical Society of America, vol. 112, iss. no. 5, November 2002, p. 2284-2284
 

Attachments

  • Reijs, Victor . MegaSound, Sound in Irish Megalithic Buildings The Journal of the Acoustical S...pdf
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The phenomenon of resonance in the Labyrinth of Ravne (Bosnia-Herzegovina).
Abstract:

The resonance phenomenon in Ravne tunnels in Bosnia – Herzegovina is an unusual but unknown phenomenon. A number of researchers consider this structure to be an ancient mine. But in our research we demonstrated a very strong response at 71,57Hz when a singer sings inside the tunnel.

Our thesis is that this structure was also used for rituals and prayers, because the resonance of these frequencies can have a direct effect on the human body, in the same way as was found in ancient Neolithic temples in South of England.

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Source: Debertolis, Paolo and Altero Heikki H. A. Savolainen. “The phenomenon of resonance in the Labyrinth of Ravne (Bosnia-Herzegovina). Results of testing.”Advanced Research in Scientific Areas December, 3. - 7. 2012
 

Attachments

  • Debertolis, Paolo and Altero Heikki H. A. Savolainen. “The phenomenon of resonance in the Laby...pdf
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